Multiquip Portable Generator DCA300SSC User Manual

OPERATION AND PARTS MANUAL  
WHISPERWATT™ SERIES  
MODEL DCA300SSC  
60HZ GENERATOR  
(CUMMINS QSL9-G3 DIESEL ENGINE)  
PARTS LIST NO. C2870300204  
Revision #0 (06/25/09)  
To find the latest revision of this  
publication, visit our website at:  
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.  
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PROPOSITION 65 WARNING  
Diesel engine exhaust and some of  
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REPORTING SAFETY DEFECTS  
If you believe that your vehicle has a defect that could cause a crash or could cause  
injury or death, you should immediately inform the National Highway Traffic Safety  
Administration (NHTSA) in addition to notifying Multiquip at 1-800-421-1244.  
If NHTSA receives similar complaints, it may open an investigation, and if it finds  
that a safety defect exists in a group of vehicles, it may order a recall and remedy  
campaign. However, NHTSA cannot become involved in individual problems  
between you, your dealer, or Multiquip.  
To contact NHTSA, you may either call the Vehicle Safety Hotline toll-free at 1-888-  
Administrator  
NHTSA  
1200 New Jersey Avenue S.E.  
Washington, DC 20590  
You can also obtain information about motor vehicle safety from  
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TABLE OF CONTENTS  
Component Drawings  
DCA300SSC  
Generator Assembly......................................... 56-59  
Control Box Assembly....................................... 60-63  
Engine and Radiator Assembly......................... 64-67  
Engine Operating Panel Assembly.................... 68-69  
Output Terminal Assembly ............................... 70-71  
Battery Assembly.............................................. 72-73  
Muffler Assembly............................................... 74-75  
Fuel Tank Assembly.......................................... 76-77  
Enclosure Assembly......................................... 78-83  
Rubber Seals Assembly ................................... 84-85  
Nameplate and Decals Assembly..................... 86-89  
60 Hz Generator  
Proposition 65 warning............................................ 2  
Reporting Safety Defects......................................... 3  
Table of Contents..................................................... 4  
Parts Ordering Procedures...................................... 5  
Safety Information .............................................. 6-11  
Specifications ........................................................ 12  
Dimensions............................................................ 13  
Installation ........................................................ 14-15  
General Information............................................... 16  
Major Components ................................................ 17  
Generator Control Panel................................... 18-19  
Engine Operating Panel.................................... 20-21  
Output Terminal Panel Familiarization .............. 22-24  
Load Application.................................................... 25  
Generator Outputs................................................. 26  
Generator Outputs/Gauge Reading....................... 27  
Output Terminal Panel Connections ................. 28-29  
Inspection/Setup............................................... 30-33  
Genertor Start-Up Procedure (Manual)............ 34-35  
Generator Start-Up Procedure (Auto Mode).......... 36  
Generator Shut-Down Procedures ........................ 37  
Maintenance..................................................... 38-41  
Trailer Maintenance .......................................... 42-45  
Trailer Wiring Diagram ........................................... 46  
Generator Wiring Diagram..................................... 47  
Engine Wiring Diagram.......................................... 48  
Controller Wiring Diagram ..................................... 49  
Troubleshooting (Generator).................................. 50  
Troubleshooting (Engine Controller)...................... 51  
Troubleshooting (Diagnostic lamp) ........................ 52  
Explanation of Code in Remarks Column.............. 54  
Suggested Spare Parts ......................................... 55  
Terms and Conditions of Sale — Parts ................. 90  
PAGE 4 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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PARTS ORDERING PROCEDURES  
Ordering parts has never been easier!  
Choose from three easy options:  
Effective:  
January 1st, 2006  
Best Deal!  
Order via Internet (Dealers Only):  
Order parts on-line using Multiquip’s SmartEquip website!  
If you have an MQ Account, to obtain a Username  
and Password, E-mail us at: parts@multiquip.  
com.  
View Parts Diagrams  
Order Parts  
Print Specification Information  
To obtain an MQ Account, contact your  
District Sales Manager for more information.  
Use the internet and qualify for a 5% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
to log in and save!  
Order Parts  
Note: Discounts Are Subject To Change  
Fax your order in and qualify for a 2% Discount  
on Standard orders for all orders which include  
complete part numbers.*  
Order via Fax (Dealers Only):  
All customers are welcome to order parts via Fax.  
Domestic (US) Customers dial:  
1-800-6-PARTS-7 (800-672-7877)  
Note: Discounts Are Subject To Change  
Domestic (US) Dealers Call:  
Order via Phone:  
1-800-427-1244  
Non-Dealer Customers:  
International Customers should contact  
their local Multiquip Representatives for  
Parts Ordering information.  
Contact your local Multiquip Dealer for  
parts or call 800-427-1244 for help in  
locating a dealer near you.  
When ordering parts, please supply:  
Dealer Account Number  
Specify Preferred Method of Shipment:  
Dealer Name and Address  
UPS/Fed Ex  
DHL  
Truck  
Priority One  
Ground  
Shipping Address (if different than billing address)  
Return Fax Number  
Next Day  
Second/Third Day  
Applicable Model Number  
Quantity, Part Number and Description of Each Part  
NOTICE  
All orders are treated as Standard Orders and will  
ship the same day if received prior to 3PM PST.  
WE ACCEPT ALL MAJOR CREDIT CARDS!  
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SAFETY INFORMATION  
Do not operate or service the equipment before reading the  
entire manual. Safety precautions should be followed at all  
times when operating this equipment. Failure to read and  
understand the safety messages and operating instructions  
could result in injury to yourself and others.  
Potential hazards associated with the operation of this  
equipment will be referenced with hazard symbols which  
may appear throughout this manual in conjunction with  
safety messages.  
SAFETY MESSAGES  
The four safety messages shown below will inform you  
about potential hazards that could injure you or others.The  
safety messages specifically address the level of exposure  
to the operator and are preceded by one of four words:  
DANGER, WARNING, CAUTION or NOTICE.  
SAFETY SYMBOLS  
DANGER  
Indicates a hazardous situation which, if not avoided,  
WILL result in DEATH or SERIOUS INJURY.  
WARNING  
Indicates a hazardous situation which, if not avoided,  
COULD result in DEATH or SERIOUS INJURY.  
CAUTION  
Indicates a hazardous situation which, if not avoided,  
COULD result in MINOR or MODERATE INJURY.  
NOTICE  
Addresses practices not related to personal injury.  
PAGE 6 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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SAFETY INFORMATION  
NEVER use accessories or attachments that are not  
recommended by MQ Power for this equipment.Damage  
to the equipment and/or injury to user may result.  
GENERAL SAFETY  
CAUTION  
NEVER operate this equipment without proper protective  
clothing, shatterproof glasses, respiratory protection,  
hearing protection, steel-toed boots and other protective  
devices required by the job or city and state regulations.  
ALWAYS know the location of the nearest  
fire extinguisher.  
ALWAYS know the location of the nearest  
first aid kit.  
ALWAYS know the location of the nearest  
phone or keep a phone on the job site. Also, know the  
phone numbers of the nearest ambulance, doctor and  
fire department. This information will be invaluable in  
the case of an emergency.  
NEVER operate this equipment when not  
feeling well due to fatigue, illness or when  
under medication.  
NEVER operate this equipment under the influence of  
drugs or alcohol.  
GENERATOR SAFETY  
DANGER  
NEVER operate the equipment in an explosive  
atmosphere or near combustible materials.An  
explosion or fire could result causing severe  
bodily harm or even death.  
ALWAYS check the equipment for loosened threads or  
bolts before starting.  
DO NOT use the equipment for any purpose other than  
its intended purposes or applications.  
WARNING  
NEVER disconnect any emergency or safety devices.  
These devices are intended for operator safety.  
Disconnection of these devices can cause severe injury,  
bodily harm or even death.Disconnection of any of these  
devices will void all warranties.  
NOTICE  
This equipment should only be operated by trained and  
qualified personnel 18 years of age and older.  
Whenever necessary, replace nameplate, operation and  
safety decals when they become difficult read.  
CAUTION  
Manufacturer does not assume responsibility for any  
accident due to equipment modifications. Unauthorized  
equipment modification will void all warranties.  
NEVER lubricate components or attempt service on a  
running machine.  
NOTICE  
ALWAYS ensure generator is on level ground before use.  
ALWAYS keep the machine in proper running condition.  
Fix damage to machine and replace any broken parts  
immediately.  
ALWAYS store equipment properly when it is not being  
used.Equipment should be stored in a clean, dry location  
out of the reach of children and unauthorized personnel  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 7  
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SAFETY INFORMATION  
ENGINE SAFETY  
DANGER  
NOTICE  
NEVER run engine without an air filter or with a dirty air  
filter.Severe engine damage may occur.Service air filter  
frequently to prevent engine malfunction.  
The engine fuel exhaust gases contain poisonous carbon  
monoxide. This gas is colorless and odorless, and can  
cause death if inhaled.  
NEVER tamper with the factory settings  
of the engine or engine governor. Damage  
to the engine or equipment can result  
if operating in speed ranges above the  
maximum allowable.  
The engine of this equipment  
requires an adequate free  
flow of cooling air. NEVER  
operate this equipment in  
any enclosed or narrow area  
where free flow of the air is  
restricted. If the air flow is  
restricted it will cause injury to people and property and  
serious damage to the equipment or engine.  
Wet stacking is a common problem with diesel engines  
which are operated for extended periods with light or  
no load applied.When a diesel engine operates without  
sufficient load (less than 40% of the rated output), it will  
not operate at its optimum temperature. This will allow  
unburned fuel to accumulate in the exhaust system,  
which can foul the fuel injectors, engine valves and  
exhaust system, including turbochargers, and reduce  
the operating performance.  
WARNING  
DO NOT place hands or fingers inside engine  
compartment when engine is running.  
In order for a diesel engine to operate at peak efficiency,  
it must be able to provide fuel and air in the proper ratio  
and at a high enough engine temperature for the engine  
to completely burn all of the fuel.  
NEVER operate the engine with heat shields or  
guards removed.  
Keep fingers, hands hair and clothing away  
from all moving parts to prevent injury.  
Wet stacking does not usually cause any permanent  
damage and can be alleviated if additional load is  
applied to relieve the condition.It can reduce the system  
performance and increase maintenance. Applying an  
increasing load over a period of time until the excess  
fuel is burned off and the system capacity is reached  
usually can repair the condition. This can take several  
hours to burn off the accumulated unburned fuel.  
DO NOT remove the radiator cap while the  
engine is hot. High pressure boiling water  
will gush out of the radiator and severely  
scald any persons in the general area of  
the generator.  
DO NOT remove the coolant drain plug while the engine  
is hot. Hot coolant will gush out of the coolant tank and  
severely scald any persons in the general area of the  
generator.  
State Health Safety Codes and Public Resources  
Codes specify that in certain locations, spark arresters  
must be used on internal combustion engines that use  
hydrocarbon fuels.A spark arrester is a device designed  
to prevent accidental discharge of sparks or flames  
from the engine exhaust. Spark arresters are qualified  
and rated by the United States Forest Service for this  
purpose. In order to comply with local laws regarding  
spark arresters, consult the engine distributor or the  
local Health and Safety Administrator.  
DO NOT remove the engine oil drain plug while the  
engine is hot. Hot oil will gush out of the oil tank and  
severely scald any persons in the general area of the  
generator.  
CAUTION  
NEVER touch the hot exhaust manifold,  
muffler or cylinder.Allow these parts to cool  
before servicing equipment.  
PAGE 8 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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SAFETY INFORMATION  
Make sure the hitch and coupling of the towing vehicle  
are rated equal to, or greater than the trailer “gross  
vehicle weight rating.”  
FUEL SAFETY  
DANGER  
DO NOT start the engine near spilled fuel or combustible  
fluids. Diesel fuel is extremely flammable and its vapors  
can cause an explosion if ignited.  
ALWAYS inspect the hitch and coupling for wear. NEVER  
tow a trailer with defective hitches, couplings, chains, etc.  
Check the tire air pressure on both towing vehicle and  
trailer. Trailer tires should be inflated to 50 psi cold.  
Also check the tire tread wear on both vehicles.  
ALWAYS refuel in a well-ventilated area, away from  
sparks and open flames.  
ALWAYS use extreme caution when working with  
flammable liquids.  
ALWAYS make sure the trailer is equipped with a safety  
chain.  
DO NOT fill the fuel tank while the engine is running  
or hot.  
ALWAYS properly attach trailer’s safety chains to towing  
vehicle.  
DO NOT overfill tank, since spilled fuel could ignite if it  
comes into contact with hot engine parts or sparks from  
the ignition system.  
ALWAYS make sure the vehicle and trailer directional,  
backup, brake and trailer lights are connected and  
working properly.  
Store fuel in appropriate containers, in well-ventilated  
areas and away from sparks and flames.  
DOT Requirements include the following:  
• Connect and test electric brake operation.  
NEVER use fuel as a cleaning agent.  
• Secure portable power cables in cable tray with tie  
wraps.  
DO NOT smoke around or near the  
equipment. Fire or explosion could result  
from fuel vapors or if fuel is spilled on a  
hot engine.  
The maximum speed for highway towing is 55 MPH unless  
posted otherwise.Recommended off-road towing is not to  
exceed 15 MPH or less depending on type of terrain.  
TOWING SAFETY  
CAUTION  
Avoid sudden stops and starts.This can cause skidding,  
or jack-knifing. Smooth, gradual starts and stops will  
improve towing.  
Check with your local county or state safety  
towing regulations, in addition to meeting  
Department of Transportation (DOT)  
SafetyTowing Regulations, before towing  
your generator.  
Avoid sharp turns to prevent rolling.  
Trailer should be adjusted to a level position at all times  
when towing.  
Raise and lock trailer wheel stand in up position when  
towing.  
Refer to MQ Power trailer manual for additional safety  
information.  
Place chock blocks underneath wheel to prevent rolling  
while parked.  
In order to reduce the possibility of an accident while  
transporting the generator on public roads, ALWAYS  
make sure the trailer that supports the generator and  
the towing vehicle are mechanically sound and in good  
operating condition.  
Place support blocks underneath the trailer’s bumper  
to prevent tipping while parked.  
Use the trailer’s swivel jack to adjust the trailer height to  
a level position while parked.  
ALWAYS shutdown engine before transporting  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 9  
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SAFETY INFORMATION  
Make sure power cables are securely connected to the  
generator’s output receptacles. Incorrect connections  
may cause electrical shock and damage to the  
generator.  
ELECTRICAL SAFETY  
DANGER  
DO NOT touch output terminals during  
operation. Contact with output terminals  
duringoperationcancauseelectrocution,  
electrical shock or burn.  
NOTICE  
ALWAYS make certain that proper power or extension  
cord has been selected for the job. See Cable Selection  
Chart in this manual.  
The electrical voltage required to  
operate the generator can cause severe  
Grounding Safety  
DANGER  
injury or even death through physical contact with live  
circuits. Turn generator and all circuit breakers OFF  
before performing maintenance on the generator or  
making contact with output terminals.  
ALWAYS make sure that electrical circuits are properly  
grounded to a suitable earth ground (ground rod) per  
the National Electrical Code (NEC) and local codes  
before operating generator. Severe injury or death by  
electrocution can result from operating an ungrounded  
generator.  
NEVER insert any objects into the output  
receptacles during operation. This is  
extremely dangerous.The possibility exists  
of electrical shock, electrocution or  
death.  
NEVER use gas piping as an electrical ground.  
Backfeed to a utility system can cause  
electrocution and/or property damage.  
NEVER connect the generator to a  
building’s electrical system without  
a transfer switch or other approved  
device. All installations should be  
performed by a licensed electrician in accordance with  
all applicable laws and electrical codes. Failure to do so  
could result in electrical shock or burn, causing serious  
injury or even death.  
Power Cord/Cable Safety  
DANGER  
NEVER let power cords or cables lay in water.  
NEVER stand in water while AC power from the  
generator is being transferred to a load.  
NEVER use damaged or worn cables or cords when  
connecting equipment to generator. Inspect for cuts in  
the insulation.  
NEVER grab or touch a live power  
cord or cable with wet hands. The  
possibility exists of electrical shock,  
electrocution or death.  
PAGE 10 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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SAFETY INFORMATION  
BATTERY SAFETY  
DANGER  
ENVIRONMENTAL SAFETY  
NOTICE  
DO NOT drop the battery. There is a possibility that the  
battery will explode.  
Dispose of hazardous waste properly.  
Examples of potentially hazardous waste  
are used motor oil, fuel and fuel filters.  
DO NOT expose the battery to open flames,  
sparks, cigarettes, etc.The battery contains  
combustible gases and liquids. If these  
gases and liquids come into contact with a  
flame or spark, an explosion could occur.  
DO NOT use food or plastic containers to  
dispose of hazardous waste.  
DO NOT pour waste, oil or fuel directly onto the ground,  
down a drain or into any water source.  
WARNING  
ALWAYSwearsafetyglasseswhenhandling  
the battery to avoid eye irritation.The battery  
contains acids that can cause injury to the  
eyes and skin.  
Use well-insulated gloves when picking up the battery.  
ALWAYS keep the battery charged. If the battery is not  
charged, combustible gas will build up.  
ALWAYS recharge the battery in a well-ventilated  
environmenttoavoidtheriskofadangerousconcentration  
of combustible gasses.  
If the battery liquid (dilute sulfuric acid) comes into  
contact with clothing or skin, rinse skin or clothing  
immediately with plenty of water.  
If the battery liquid (dilute sulfuric acid) comes into  
contact with eyes, rinse eyes immediately with plenty  
of water and contact the nearest doctor or hospital to  
seek medical attention.  
CAUTION  
ALWAYS disconnect the NEGATIVE battery terminal  
before performing service on the generator.  
ALWAYS keep battery cables in good working condition.  
Repair or replace all worn cables.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 11  
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SPECIFICATIONS  
Table 1. Generator Specifications  
DCA300SSC  
Model  
Type  
Revolving field, self ventilated,  
Drip proof, Single bearing  
Armature Connection  
Phase  
Star with Neutral  
3
Standby Output  
Prime Output  
Voltage — 1Ø  
Voltage — 3Ø  
Frequency  
330 KVA (264 KW)  
300 KVA (240 KW)  
120,127,139, 240, 254 and 277V  
208, 220, 240, 416, 440 and 480V  
60 Hz  
Speed  
1800 rpm  
Power Factor  
Aux. AC Power  
Aux. Voltage/Output  
Weight No Fuel  
Weight Fuel  
0.8  
Single Phase, 60 Hz  
4.8 Kw (2.4 kW x 2)  
8,644 lbs. (3920 kg)  
9,769 lbs. (4430 kg)  
Table 2. Engine Specifications  
Model  
Type  
Cummins QSL9-G3  
4 cycle, water-cooled, direct injection, turbocharged, charge air cooled  
No. of Cylinders  
Bore x Stroke  
Displacement  
Rated Output  
Starting  
6 cylinders  
4.49 in. x 5.69 in. (114 mm x 145 mm)  
543 cu. in. (8900 cc)  
363 HP at 1800 rpm  
Electric  
Coolant Capacity  
Lube Oil Capacity  
Fuel Type  
11.3 gal. (43.0 liters)  
7.0 gal. (26.5 liters)  
#2 Diesel Fuel  
Fuel Tank Capacity  
129 gal. (490 liters)  
19.0 gal. (72.0 L)/hr at full load  
11.1 gal. (41.9 L)/hr at 1/2 load  
15.5 gal. (58.6 L)/hr at 3/4 load  
5.9 gal. (22.4 L)/hr at 1/4 load  
Fuel Consumption  
Battery  
150 Ah x 2 (24V System)  
PAGE 12 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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DIMENSIONS  
Figure 1. Dimensions  
Table 3. Dimensions  
Reference  
Letter  
Dimension in. (mm)  
Reference Letter  
Dimension in. (mm)  
A
B
C
D
E
39.76 in. (1,010 mm)  
43.90 in. (1,115 mm)  
23.03 in. (585 mm.)  
25.20 in. (640 mm)  
39.76 in. (1,010 mm)  
F
G
H
I
43.90 in. (1,115 mm)  
149.61 in. (3,800 mm)  
70.87 in. (1,800 mm)  
55.12 in. (1,400 mm)  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 13  
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INSTALLATION  
Figure 2. Typical Generator Grounding Application  
PAGE 14 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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INSTALLATION  
OUTDOOR INSTALLATION  
GENERATOR GROUNDING  
Install the generator in a area that is free of debris,  
bystanders, and overhead obstructions. Make sure the  
generator is on secure level ground so that it cannot slide  
or shift around. Also install the generator in a manner so  
that the exhaust will not be discharged in the direction of  
nearby homes.  
To guard against electrical shock and possible damage to  
the equipment, it is important to provide a good EARTH  
ground.  
Article 250 (Grounding) of the National Electrical Code  
(NEC) provides guide lines for proper grounding and  
specifies that the cable ground shall be connected to the  
grounding system of the building as close to the point of  
cable entry as practical.  
The installation site must be relatively free from moisture  
and dust.All electrical equipment should be protected from  
excessive moisture. Failure to do will result in deterioration  
of the insulation and will result in short circuits and  
grounding.  
NEC articles 250-64(b) and 250-66 set the following  
grounding requirements:  
1. Use one of the following wire types to connect the  
generator to earth ground.  
Foreign materials such as dust, sand, lint and abrasive  
materials have a tendency to cause excessive wear to  
engine and alternator parts.  
a. Copper - 10 AWG (5.3 mm2) or larger.  
b. Aluminum - 8 AWG (8.4 mm2) or larger.  
CAUTION  
Pay close attention to ventilation when operating the  
generator inside tunnels and caves.The engine exhaust  
contains noxious elements. Engine exhaust must be  
routed to a ventilated area.  
2. When grounding the generator (Figure 2) connect the  
ground cable between the lock washer and the nut on  
the generator and tighten the nut fully. Connect the  
other end of the ground cable to earth ground.  
3. NEC article 250-52(c) specifies that the earth ground rod  
should be buried a minimum of 8 ft. into the ground.  
INDOOR INSTALLATION  
NOTICE  
Exhaust gases from diesel engines are extremely  
poisonous. Whenever an engine is installed indoors the  
exhaust fumes must be vented to the outside. The engine  
should be installed at least two feet from any outside wall.  
Using an exhaust pipe which is too long or too small can  
cause excessive back pressure which will cause the engine  
to heat excessively and possibly burn the valves.  
When connecting the generator to any buildings  
electrical system ALWAYS consult with a licensed  
electrician.  
MOUNTING  
The generator must be mounted on a solid foundation (such  
as concrete) and set firmly on the foundation to isolate  
vibration of the generator when it is running.The generator  
must set at least 6 inches above the floor or grade level (in  
accordance to NFPA 110, Chapter 5-4.1).DO NOT remove  
the metal skids on the bottom of the generator. They are  
to resist damage to the bottom of the generator and to  
maintain alignment.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 15  
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GENERAL INFORMATION  
GENERATOR  
OPEN DELTA EXCITATION SYSTEM  
The MQ Power Model DCA300SSC is a generator (Figure  
3) that is designed as a high quality portable (requires a  
trailer for transport) power source for telecom sites, lighting  
facilities, power tools, submersible pumps and other  
industrial and construction machinery.  
The DCA300SSC generator is equipped with the state of  
the art “Open-Delta” excitation system. The open delta  
system consist of an electrically independent winding  
wound among stationary windings of the AC output  
section.  
There are four connections of the open delta A, B, C and  
D. During steady state loads, the power from the voltage  
regulator is supplied from the parallel connections of A to  
B, A to D, and C to D. These three phases of the voltage  
input to the voltage regulator are then rectified and are the  
excitation current for the exciter section.  
ENGINE OPERATING PANEL  
The “Engine Operating Panel” is provided with the following:  
Tachometer  
Emergency Stop Switch  
Water Temperature Gauge  
Oil Pressure Gauge  
When a heavy load, such as a motor starting or a short  
circuit occurs, the automatic voltage regulator (AVR)  
switches the configuration of the open delta to the series  
connection of B to C. This has the effect of adding the  
voltages of each phase to provide higher excitation to the  
exciter section and thus better voltage response during the  
application of heavy loads.  
Charging Ammeter Gauge  
Fuel Level Gauge  
Pre-Heat Lamp  
Engine Speed Switch  
Battery Switch  
Engine Alarm Lamps (5)  
GENERATOR CONTROL PANEL  
The “Generator Control Panel” is provided with the following:  
Frequency Meter (Hz)  
The connections of the AVR to the AC output windings are  
for sensing only. No power is required from these windings.  
The open-delta design provides virtually unlimited excitation  
current, offering maximum motor starting capabilities.The  
excitation does not have a “fixed ceiling” and responds  
according the demands of the required load.  
AC Ammeter (Amps)  
AC Voltmeter (Volts)  
Ammeter Change-Over Switch  
Voltmeter Change-Over Switch  
Voltage Regulator  
Panel Light/Panel Light Switch  
3-Pole, 800 amp Main Circuit Breaker  
“Control Box” (located behind the Gen. Control Panel)  
• Automatic Voltage Regulator  
• Current Transformer  
ENGINE  
The DCA300SSC is powered by a 6 cylinder, 4-cycle water  
cooled, direct injection, turbocharged, charge air cooled  
Cummins QSL9-G3 diesel engine.This engine is designed  
to meet every performance requirement for the generator.  
Reference Table 2 for engine specifications.  
In keeping with MQ Power’s policy of constantly improving  
its products, the specifications quoted herein are subject  
to change without prior notice.  
• Over-Current Relay  
• Starter Relay  
• Engine Controller (Computer Controlled)  
OUTPUT TERMINAL PANEL  
The “Output Terminal Panel” is provided with the following:  
Three 120/240V output receptacles (CS-6369), 50A  
Three auxiliary circuit breakers, 50A  
Two 120V output receptacles (GFCI), 20A  
Two GFCI circuit breakers, 20A  
Eight output terminal lugs (3Ø power)  
Battery Charger (Optional)  
Water Heater (Optional)  
ELECTRIC GOVERNOR SYSTEM  
The electric governor system controls the RPMs of the engine.  
When the engine demand increases or decreases, the  
governor system regulates the frequency variation to .25%.  
EXTENSION CABLES  
When electric power is to be provided to various tools or  
loads at some distance from the generator, extension cords  
are normally used. Cables should be sized to allow for  
distance in length and amperage so that the voltage drop  
between the generator and point of use (load) is held to  
a minimum. Use the cable selection chart (Table 6) as a  
guide for selecting proper extension cable size.  
PAGE 16 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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MAJOR COMPONENTS  
Table 4. Generator Major Components  
ITEM NO.  
DESCRIPTION  
Muffler Assembly  
1
2
3
4
5
6
7
8
9
Engine Assembly  
Enclosure Assembly  
Generator Assembly  
Output Terminal Assembly  
Battery Assembly  
Fuel Tank Assembly  
Generator Control Panel Assembly  
Engine Operating Panel Assembly  
Figure 3. Major Components  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 17  
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GENERATOR CONTROL PANEL  
Figure 4. Generator Control Panel  
The definitions below describe the controls and functions  
of the DCA300SSC Generator Control Panel (Figure 4).  
the controller will shutdown the engine by initializing  
the Over Speed Protection mode.  
1. Pilot Lamp — Indicates the system is running.  
5. Main Circuit Breaker — This three-pole, 800 amp  
main breaker is provided to protect the U,V, and W  
Output Terminal Lugs from overload.  
2. Panel Light — Normally used in dark areas or at night  
time.When activated, panel lights will illuminate.When  
the generator is not in use be sure to turn the panel  
light switch to the OFF position.  
6. Voltmeter Change-Over Switch This switch allows  
the AC voltmeter to indicate phase to phase voltage  
between any two phases of the output terminals or to  
be switched off.  
3. AC Voltmeter — Indicates the output voltage present  
at the U,V, and W Output Terminal Lugs.  
7. Voltage Regulator Control — Allows 15% manual  
adjustment of the generator’s output voltage.  
4. Auto On/Off Engine Controller (MPEC) —  
This controller has a vertical row of status LED’s (inset),  
that when lit, indicate that an engine malfunction (fault)  
has been detected. When a fault  
has been detected the engine  
controller will evaluate the fault  
and all major faults will shutdown  
the generator. During cranking  
cycle, The MPEC will attempt to  
crank the engine for 10 seconds  
before disengaging.  
8. Panel Light Switch — When activated will turn on  
control panel light.  
9. Ammeter Change-Over Switch — This switch allows  
the AC ammeter to indicate the current flowing to the load  
connected to any phase of the output terminals, or to be  
switched off. This switch does not effect the generator  
output in any fashion, it is for current reading only.  
10. AC Ammeter — Indicates the amount of current the  
load is drawing from the generator per leg selected by  
the ammeter phase-selector switch.  
If the engine does not engage (start) by the third  
attempt, the engine will be shutdown by the engine  
controller’s Over Crank Protection mode. If the  
engine engages at a speed (RPM’s) that is not safe,  
11. Frequency Meter — Indicates the output frequency  
in hertz (Hz). Normally 60 Hz  
PAGE 18 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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GENERATOR CONTROL PANEL  
MPEC Control Switch — This switch controls the  
running of the unit.If this switch is set to the OFF/RESET  
position, the unit will not run.When this switch is set to the  
manual position, the generator will start immediately.  
The Control Box is equipped with the following major  
components:  
Over-Current Relay  
Voltage Rectifier (AVR)  
Starter Relay  
If the generator is to be connected to a building’s AC  
power source via a transfer switch (isolation), place the  
switch in the AUTO position. In this position, should an  
outage occur, the automatic transfer switch (ATS) will  
start the generator automatically via the generator’s auto-  
start contacts conn ected to the ATS’s start contacts.  
Please refer to your ATS installation manual for further  
instructions for the correct installation of the auto-start  
contacts of the geerator to the ATS.  
Current Transformer  
Voltage Change-Over Board  
Three Phase Circuit Breaker  
NOTICE  
Remember the overcurrent relay monitors the current  
flowing from the U,V, and W Output Terminal Lugs  
to the load.  
Low Oil Pressure — Indicates the engine pressure  
has fallen below a safe operating level.The oil pressure  
is detected using variable resistive values from the  
oil pressure sending unit. This is considered a major  
fault.  
In the event of a short circuit or over current condition,  
it will automatically trip the 800 amp main breaker.  
To restore power to the OutputTerminal Panel, press  
the reset button on the overcurrent relay and place the  
main circuit breaker in the closed position (ON).  
High Coolant Temperature — Indicates the engine  
temperature has exceeded a safe operating level. The  
engine temperature is detected using variable resistive  
values from the temperature sending unit. This is  
considered a major fault.  
Overcrank Shutdown — Indicates the unit has  
attempted to start a pre- programmed number of  
timesand has failed to start. The number of cycles and  
duration are programmable. It is pre-set at 3 cycles with  
a 10-second duration. This is considered a major fault.  
Overspeed Shutdown — Indicates the engine is running  
at an unsafe speed. This is considered a major fault.  
Engine Running — Indicates that engine is running at  
a safe operating speed.  
Located behind the generator control panel is the  
Generator Control Box. This box contains some of the  
necessary electronic components required to make the  
generator function.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 19  
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ENGINE OPERATING PANEL  
1
2
9
3
4
5
6
OIL PRESS.  
7 8  
WATER TEMP.  
FUEL LEVEL  
AIR FILTER  
COOLANT LEVEL  
ON  
OFF  
Figure 5. Engine Operating Panel  
The definitions below describe the controls and functions  
of the DCA300SSC Engine Operating Panel (Figure 5).  
to the MANUAL position to start the engine, the  
lamp will be lit. When the oil pressure rises after  
start-up the lamp will go OFF. If this lamp is ever  
lit (ON) during normal operation of the generator,  
the emergency shutdown device will stop the engine  
automatically.  
1. Tachometer — Indicates engine speed in RPM’s for 60  
Hz operation. This meter should indicate 1800 RPM’s  
when the rated load is applied.In addition a built in hour  
meter will record the number of operational hours that  
the generator has been in use.  
c. Low Fuel Level Lamp When this lamp  
is ON, it is time to stop the engine and  
add fuel.Remember to let the engine cool  
before adding fuel.  
2. Oil Pressure Gauge — During normal operation this  
gauge be should read between 28 to 85 psi. (193~586  
kPa).When starting the generator the oil pressure may  
read a little higher, but after the engine warms up the oil  
pressure should return to the correct pressure range.  
d. Air Filter Alarm — When the air filter  
element is clogged, this lamp goes ON  
indicating the element should be  
immediately cleaned or replaced.  
3. WaterTemperature Gauge — During normal operation  
this gauge be should read between 167° and 203°F  
(75°~95°C).  
e. Coolant Level Alarm — This lamp  
goes ON when the coolant level is  
low. If this lamp goes ON while the  
engine is in operation, the emergency  
shutdown device will automatically stop  
the engine.  
4. Charging Ammeter Gauge — Indicates the current  
being supplied by the engine’s alternator which  
provides current for generator’s control circuits and  
battery charging system.  
5. Fuel Gauge — Indicates amount of diesel fuel available.  
7. Engine Speed Switch — This switch controls the  
speed of the engine (low/high).  
6. Engine Warning Lamps — There are three engine  
warning lamps, they are defined as follows:  
8. Pre-Heat Lamp — When ECU is placed in AUX  
position, pre-heat lamp will be ON. When pre-heat  
cycle is completed, lamp will turn OFF.  
a. Overheat Lamp — This lamp goes ON  
when the cooling water temperature rises  
abnormally. If the lamp goes ON during  
normal operation of the generator, the  
emergency shutdown device will stop the  
engine automatically.  
9. Emergency Stop Button — Push this button inward to  
stop the engine in the event of an emergency.DO NOT  
use this button as a means of stopping the engine.  
10. Battery Switch This switch should be set to the ON  
position during normal operation.When the engine has  
been stop, place this switch in the OFF position. DO  
NOT turn this switch during normal operation, it could  
cause damage to the electrical equipment.  
b. Low Oil Pressure Lamp — During  
normal operation of the generator this  
lamp should remain OFF. When the  
Auto-OFF/Reset-Manual switch is set  
PAGE 20 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NOTES  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 21  
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OUTPUT TERMINAL PANEL FAMILIARIZATION  
OUTPUT TERMINAL PANEL  
OUTPUT TERMINAL FAMILIARIZATION  
The Output Terminal Panel (Figure 6) shown below is  
located on the right-hand side (left from control panel) of  
the generator. Lift up on the cover to gain access to  
receptacles and terminal lugs.  
The “Output Terminal Panel ” (Figure 6) is provided with  
the following:  
Three (3) 240/139V output receptacles @ 50 amp  
Three (3) Circuit Breakers @ 50 amps  
NOTICE  
Two (2) 120V GFCI receptacles @ 20 amp  
Two (2) GFCI Circuit Breakers @ 20 amps  
Eight (8) Output Terminal Lugs ( U, V, W, O, Ground)  
Terminal legs “Oand “Groundare considered bonded  
grounds  
Figure 6. Output Terminal Panel  
PAGE 22 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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OUTPUT TERMINAL PANEL FAMILIARIZATION  
Each auxiliary receptacle is protected by a 50 amp circuit  
breaker. These breakers are located directly above the  
GFCI receptacles. Remember the load output (current) on  
all three receptacles is dependent on the load requirements  
of the Output Terminal Lugs.  
120 VAC GFCI Receptacles  
There are two 120 VAC, 20 amp GFCI (Duplex Nema  
5-20R) receptacles provided on the output terminal panel.  
These receptacles can be accessed in any voltage  
selector switch position.Each receptacle is protected by a  
20 amp circuit breaker.These breakers are located directly  
above the GFCI receptacles. Remember the load output  
(current) of both GFCI receptacles is dependent on the load  
requirements of the U, V, and W output terminal lugs.  
Turn the voltage regulator control knob (Figure 9) on the  
control panel to obtain the desired voltage.Turning the knob  
clockwise will increase the voltage, turning the knob  
counter-clockwise will decrease the voltage.  
Pressing the reset button resets the GFCI receptacle after  
being tripped. Pressing the test button (See Figure 7) in  
the center of the receptacle will check the GFCI function.  
Both receptacles should be tested at least once a month.  
Figure 9. Voltage Regulator Control Knob  
Figure 7. G.F.C.I. Receptacle  
Twist Lock Dual Voltage 120/240 VAC Receptacles  
There are three 120/240V, 50 amp auxiliary twist-lock (CS-  
6369) receptacles (Figure 8) provided on the output  
terminal panel. These receptacles can only be accessed  
when the voltage selector switch is placed in the single-  
phase 240/120 position.  
Figure 8. 120/240V Twist-Lock Auxiliary  
Receptacles  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 23  
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OUTPUT TERMINAL PANEL FAMILIARIZATION  
Connecting Loads  
Over Current Relay  
Loads can be connected to the generator by the Output  
Terminal Lugs or the convenience receptacles (Figure 10).  
Make sure to read the operation manual before attempting  
to connect a load to the generator.  
An over current relay (Figure 11) is connected to the main  
circuit breaker. In the event of an overload, both the circuit  
breaker and the over current relay may trip. If the circuit  
breaker can not be reset, the reset button on the over  
current relay must be pressed. The over current relay is  
located in the control box.  
To protect the output terminals from overload, a 3-pole,  
800A main circuit breaker is provided.Make sure to switch  
ALL circuit breakers to the OFF position prior to starting  
the engine.  
Figure 11. Over Current Relay  
Figure 10. Connecting Loads  
PAGE 24 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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LOAD APPLICATION  
SINGLE PHASE LOAD  
THREE PHASE LOAD  
Always be sure to check the nameplate on the generator  
and equipment to insure the wattage, amperage, frequency,  
and voltage requirements are satisfactorily supplied by the  
generator for operating the equipment.  
When calculating the power requirements for 3-phase  
power use the following equation:  
Generally, the wattage listed on the nameplate of the  
equipment is its rated output. Equipment may require  
130—150% more wattage than the rating on the nameplate,  
as the wattage is influenced by the efficiency, power factor  
and starting system of the equipment.  
NOTICE  
If 3Ø load (kVA) is not given on the equipment  
nameplate, approximate 3Ø load may be determined  
by multiplying voltage by amperage by 1.732  
NOTICE  
If wattage is not given on the equipment’s name plate,  
approximate wattage may be determined by multiplying  
nameplate voltage by the nameplate amperage.  
NOTICE  
Motors and motor-driven equipment draw much greater  
current for starting than during operation.  
WATTS = VOLTAGE x AMPERAGE  
An inadequate size connecting cable which cannot carry  
the required load can cause a voltage drop which can  
burn out the appliance or tool and overheat the cable. See  
Table 6.  
The power factor of this generator is 0.8.SeeTable 5 below  
when connecting loads.  
Table 5. Power Factor By Load  
When connecting a resistance load such as an  
incandescent lamp or electric heater, a capacity of up to  
the generating set’s rated output (kW) can be used.  
Type of Load  
Power Factor  
Single-phase induction motors  
0.4-0.75  
Electric heaters, incandescent lamps  
Fluorescent lamps, mercury lamps  
1.0  
When connecting a fluorescent or mercury lamp, a  
capacity of up to the generating set’s rated output (kW)  
multiplied by 0.6 can be used.  
0.4-0.9  
Electronic devices, communication  
equipment  
1.0  
0.8  
When connecting an electric drill or other power tools,  
pay close attention to the required starting current  
capacity.  
Common power tools  
Table 6. Cable Selection (60 Hz, Single Phase Operation)  
When connecting ordinary power tools, a capacity of up to  
the generating set’s rated output (kW) multiplied by 0.8 can  
be used.  
Load in Watts  
Maximum Allowable Cable Length  
Current  
in  
Amperes  
At 100  
Volts  
At 200  
Volts  
#10 Wire #12 Wire #14 Wire #16 Wire  
DANGER  
2.5  
5
300  
600  
1000 ft.  
500 ft.  
350 ft.  
250 ft.  
150 ft.  
125 ft.  
600 ft.  
300 ft.  
200 ft.  
150 ft.  
100 ft.  
75 ft.  
375 ft.  
200 ft.  
125 ft.  
100 ft.  
65 ft.  
250 ft.  
125 ft.  
100 ft.  
600  
1200  
1800  
2400  
3600  
4800  
Before connecting this generator to any building’s  
electrical system, a licensed electrician must install  
an isolation (transfer) switch. Serious damage to  
the building’s electrical system may occur without this  
transfer switch.  
7.5  
10  
15  
20  
900  
1200  
1800  
2400  
50 ft.  
CAUTION: Equipment damage can result from low voltage  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 25  
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GENERATOR OUTPUTS  
GENERATOR OUTPUT VOLTAGES  
Maximum Amps  
A wide range of voltages are available to supply voltage  
for many different applications. Voltages are selected by  
applying jumpers (6) to the voltage change-over board  
(Figure 12). To obtain some of the voltages as listed in  
Table 7 (see below) will require a fine adjustment using  
the voltage regulator (VR) control knob located on the  
control panel.  
Table 8 shows the maximum amps the generator can  
provide. DO NOT exceed the maximum amps as listed.  
Table 8. Generator Maximum Amps  
Model  
DCA300SSC  
Rated Voltage  
Maximum Amps  
Voltage Change-Over Board  
Single Phase 120 Volt 666.7 amps (4 wire)  
Single Phase 240 Volt 333.3 amps (4 wire)  
The voltage change-over board (Figure 12) is located on  
the control box, behind the generator control panel. This  
board has been provided for ease of voltage selection.  
Three Phase 240 Volt  
Three Phase 480 Volt  
722 amps  
361 amps  
Figure 12. Voltage Change-Over Board  
CAUTION  
NEVER attempt to place jumper plates on the voltage  
change-over board while the generator is in operation.  
There exist the possibility of electrocution, electrical  
shock or burn, which can cause severe bodily harm  
or even death!  
Table 7. Voltages Available  
Three Phase  
(Switchable)  
208V  
220V  
240V  
416V  
440V  
254V  
480V  
277V  
Single Phase  
(Switchable)  
120V  
127V  
139V  
240V  
PAGE 26 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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GENERATOR OUTPUTS/GAUGE READING  
HOW TO READ THE AC AMMETER AND AC  
VOLTAGE GAUGES  
AC Ammeter Gauge Reading  
Place the AC Ammeter Change-Over Switch (Figure 16)  
in the U position and observe the current reading (load  
drain) on the U terminal as indicated on the AC Ammeter  
Gauge (Figure 17). This process can be repeated for  
terminals V and W.  
The AC ammeter and AC voltmeter gauges are controlled  
by the AC ammeter and AC voltmeter change-over  
switches.  
Both of these switches are located on the control panel and  
DO NOT effect the generator output. They are provided to  
help observe how much power is being supplied, produced  
at the UVWO terminals lugs.  
Before taking a reading from either gauge, configure the  
Voltage Change-Over Board (Figure 13) which produces  
the desired output voltage.  
Figure 16. AC Ammeter  
Change-Over Switch  
Figure 17. AC Ammeter  
(Amp reading on U Lug)  
NOTICE  
The ammeter gauge will only show a reading when  
the Output Terminal Lugs are connected to a load  
and in use.  
Figure 13. Voltage Change-Over Board  
240/3Ø Position  
AC Voltmeter Gauge Reading  
Place the ACVoltmeter Change-Over Switch (Figure 14)  
in theW-U position and observe the phase to phase voltage  
reading between the W and U terminals as indicated on  
the AC Voltmeter Gauge (Figure 15).  
Figure 14. ACVoltmeter  
Change-Over Switch  
Figure 15. ACVoltmeter Gauge  
(Volt reading onW-U Lug)  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 27  
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OUTPUT TERMINAL PANEL CONNECTIONS  
3. Turn the voltage regulator knob (Figure 20) clockwise  
to increase voltage output, turn counterclockwise to  
decrease voltage output. Use voltage regulator  
adjustment knob whenever fine tuning of the output  
voltage is required  
UVWO TERMINAL OUTPUT VOLTAGES  
Various output voltages can be obtained using the UVWO  
output terminal lugs. The voltages at the terminals are  
dependent on the placement of the jumpers plates (6) on  
the Voltage Change-Over Board and the adjustment of  
the Voltage Regulator Control Knob.  
Remember the voltage change-over board determines the  
range of the output voltage and can be configured in two  
different positions that provide 6 different output voltages  
at the UVWO output terminals. The generator is shipped  
from the factory in the 240V configuration. The voltage  
regulator (VR) allows the user to increase or decrease the  
selected voltage.  
Figure 20. Voltage Regulator Knob  
1Ø-240V UVWO Terminal Output Voltages  
1. Make sure the voltage change-over board is jumpered  
for 240V operation as shown in Figure 18.  
2. Connect the load wires to the UVWO terminals as  
shown in Figure 21.  
3Ø-240V UVWO Terminal Output Voltages  
1. Jumper the voltage change-over board for 240V  
operation as shown in Figure 18.  
Figure 21. UVWO Terminal Lugs 1Ø-240V  
Connections  
1Ø-120V UVWO Terminal Output Voltages  
1. Make sure the voltage change-over board is jumpered  
for 240V operation as shown in Figure 18.  
Figure 18. Voltage Change-Over Board 240V  
Configuration  
2. Adjust voltage regulator knob (Figure 20) for an output  
of 208V to obtain 120V at the UVWO terminals.  
2. Connect the load wires to the UVWO terminals as  
shown in Figure 19.  
3. Connect the load wires to the UVWO terminals as  
shown in Figure 22.  
Figure 19. UVWO Terminal Lugs  
Figure 22. UVWO Terminal Lugs 1Ø-120V  
Connections  
PAGE 28 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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OUTPUT TERMINAL PANEL CONNECTIONS  
3Ø-480V UVWO Terminal Output Voltages  
1Ø-480V UVWO Terminal Output Voltages  
1. Jumper the voltage change-over board for 480V  
operation as shown in Figure 23. This configuration  
uses 6 jumper plates in 3 different positions.Remember  
there are 2 jumper plates at every position. Every  
jumper plate must be used.  
1. Make sure the voltage change-over board is jumpered  
for 480V operation as shown in Figure 23.  
2. Connect the load wires to the UVWO terminals as  
shown in Figure 25.  
Figure 25. UVWO Terminal Lugs 1Ø-480V  
Connections  
Figure 23. Voltage Change-Over Board 480V  
Configuration  
1Ø-277V UVWO Terminal Output Voltages  
2. Connect the load wires to the UVWO terminals as  
shown in Figure 24.  
1. Make sure the voltage change-over board is jumpered  
for 480V operation as shown in Figure 23.  
2. Connect the load wires to the UVWO terminals as  
shown in Figure 26.  
Figure 24. UVWO Terminal Lugs 3Ø-480V  
Connections  
NOTICE  
Figure 26. UVWO Terminal Lugs 1Ø-277V  
Connections  
ALWAYS make sure that the connections to the UVWO  
terminals are secure and tight.The possibility of arcing  
exists, that could cause a fire.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 29  
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INSPECTION/SETUP  
CIRCUIT BREAKERS  
FUEL CHECK  
DANGER  
To protect the generator from an overload, a 3-pole, 800  
amp, main circuit breaker is provided to protect the U,V,  
and W Output Terminals from overload. In addition two  
single-pole, 20 amp GFCI circuit breakers are provided to  
protect the GFCI receptacles from overload.Three 50 amp  
load circuit breakers have also been provided to protect the  
auxiliary receptacles from overload. Make sure to switch  
ALL circuit breakers to the OFF position prior to starting  
the engine.  
Fuel spillage on a hot engine can cause  
a fire or explosion.If fuel spillage occurs,  
wipe up the spilled fuel completely to  
prevent fire hazards. NEVER smoke  
around or near the generator.  
Refilling the Fuel System  
LUBRICATION OIL  
CAUTION  
Fill the engine crankcase with lubricating oil through the  
filler hole, but DO NOT overfill. Make sure the generator is  
level and verify that the oil level is maintained between the  
two notches (Figure 27) on the dipstick. See Table 9 for  
proper selection of engine oil.  
ONLY properly trained personnel who have read  
and understand this section should refill the fuel tank  
system.  
This generator has an internal fuel tank located inside  
the trailer frame and may also be equipped with an  
environmental fuel tank (Figure 28). ALWAYS fill the fuel  
tanks with clean fresh #2 diesel fuel. DO NOT fill the fuel  
tanks beyond their capacities.  
Figure 27. Engine Oil Dipstick  
Pay attention to the fuel tank capacity when replenishing  
fuel. The fuel tank cap must be closed tightly after filling.  
Handle fuel in a safety container. If the container does not  
have a spout, use a funnel. Wipe up any spilled fuel  
immediately.  
When checking the engine oil, be sure to check if the oil is  
clean. If the oil is not clean, drain the oil by removing the  
oil drain plug, and refill with the specified amount of oil as  
outlined in the Cummins Engine Owner’s Manual. Oil  
should be warm before draining.  
Other types of motor oils may be substituted if they meet  
the following requirements:  
API Service Classification CC/SC  
API Service Classification CC/SD  
API Service Classification CC/SE  
API Service Classification CC/SF  
Table 9. Recommended Motor Oil  
Figure 28. Internal Fuel Tank System  
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INSPECTION/SETUP  
2. Open cabinet doors on the “right side” of the generator  
(from generator control panel position). Remove fuel  
cap and fill tank (Figure 30).  
Refueling Procedure:  
WARNING  
Diesel fuel and its vapors are dangerous  
to your health and the surrounding  
environment. Avoid skin contact and/or  
inhaling fumes.  
1. LevelTanks — Make sure fuel cells are level with the  
ground. Failure to do so will cause fuel to spill from the  
tank before reaching full capacity (Figure 29).  
CAUTION  
ALWAYS place trailer on firm level ground before  
refueling to prevent spilling and maximize the amount  
of fuel that can be pumped into the tank.  
Figure 30. Fueling the Generator  
3. NEVER overfill fuel tank — It is important to read the  
fuel gauge when filling trailer fuel tank. DO NOT wait  
for fuel to rise in filler neck (Figure 31).  
Figure 29. Only Fill on Level Ground  
NOTICE  
Figure 31. Full Fuel Tank  
ONLY use #2 diesel fuel when refueling.  
CAUTION  
DO NOT OVERFILL fuel system. Leave room for fuel  
expansion. Fuel expands when heated (Figure 32).  
Figure 32. Fuel Expansion  
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INSPECTION/SETUP  
The engine may overheat if the radiator fins become  
overloaded with dust or debris. Periodically clean the  
radiator fins with compressed air. Cleaning inside the  
machine is dangerous, so clean only with the engine turned  
off and the negative battery terminal disconnected.  
COOLANT (ANTIFREEZE/SUMMER COOLANT/  
WATER)  
Cummins recommends antifreeze/summer coolant for use in  
their engines, which can be purchased in concentrate (and  
mixed with 50% demineralized water) or pre-diluted. See the  
Cummins Engine Owner’s Manual for further details.  
AIR CLEANER  
Periodic cleaning/replacement is necessary. Inspect air  
cleaner in accordance with the Cummins Engine Owner’s  
Manual.  
WARNING  
If adding coolant/antifreeze mix to the  
radiator, DO NOT remove the radiator cap  
until the unit has completely cooled. The  
possibility of hot! coolant exists which can  
cause severe burns.  
FAN BELT TENSION  
A slack fan belt may contribute to overheating, or to  
insufficient charging of the battery. Inspect the fan belt for  
damage and wear and adjust it in accordance with the  
Cummins Engine Owner’s Manual.  
Day-to-day addition of coolant is done from the recovery  
tank.When adding coolant to the radiator, DO NOT remove  
the radiator cap until the unit has completely cooled. See  
Table 10 for engine, radiator, and recovery tank coolant  
capacities.Make sure the coolant level in the recovery tank  
is always between the “H” and the “Lmarkings.  
The fan belt tension is proper if the fan belt bends 10 to 15  
mm (Figure 33) when depressed with the thumb as shown  
below.  
Table 10. Coolant Capacity  
Engine and Radiator  
Reserve Tank  
15.8 Gal (60 liters)  
N/A  
Operation in Freezing Weather  
Figure 33. Fan Belt Tension  
When operating in freezing weather, be certain the proper  
amount of antifreeze (Table 11) has been added.  
CAUTION  
NEVER place hands near the belts or fan  
while the generator set is running.  
Table 11. Anti-Freeze  
Operating Temperatures  
Freezing Point  
Vol %  
Anti-Freeze  
°C  
°F  
50  
-37  
-34  
Cleaning the Radiator  
NOTICE  
When the antifreeze is mixed with water, the antifreeze  
mixing ratio must be less than 50%.  
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INSPECTION/SETUP  
When connecting battery do the following:  
BATTERY  
1. NEVER connect the battery cables to the battery  
terminals when the MPEC Control Switch is in either  
the MANUAL position. ALWAYS make sure that the  
MPEC Control Switch is in the OFF/RESET position  
when connecting the battery.  
This unit is of negative ground DO NOT connect in reverse.  
Always maintain battery fluid level between the specified  
marks. Battery life will be shortened, if the fluid level are  
not properly maintained. Add only distilled water when  
replenishment is necessary.  
2. Place a small amount of battery terminal treatment  
compound around both battery terminals. This will  
ensure a good connection and will help prevent  
corrosion around the battery terminals.  
DO NOT over fill. Check to see whether the battery  
cables are loose. Poor contact may result in poor starting  
or malfunctions. Always keep the terminals firmly  
tightened. Coating the terminals with an approved battery  
terminal treatment compound. Replace battery with only  
recommended type battery. The battery type used in this  
generator is BCI Group 27.  
NOTICE  
If the battery cable is connected incorrectly, electrical  
damage to the generator will occur.Pay close attention to  
the polarity of the battery when connecting the battery.  
The battery is sufficiently charged if the specific gravity  
of the battery fluid is 1.28 (at 68° F). If the specific gravity  
should fall to 1.245 or lower, it indicates that the battery is  
dead and needs to be recharged or replaced.  
CAUTION  
Inadequate battery connections may cause poor starting  
of the generator, and create other malfunctions.  
Before charging the battery with an external electric source,  
be sure to disconnect the battery cables.  
Battery Cable Installation  
ALTERNATOR  
ALWAYS be sure the battery cables (Figure 34) are properly  
connected to the battery terminals as shown below. The  
red cable is connected to the positive terminal of the  
battery, and the black cable is connected to the negative  
terminal of the battery.  
The polarity of the alternator is negative grounding type.  
When an inverted circuit connection takes place, the  
circuit will be in short circuit instantaneously resulting the  
alternator failure.  
DO NOT put water directly on the alternator. Entry of water  
into the alternator can cause corrosion and damage the  
alternator.  
CAUTION  
ALWAYS disconnect the negative terminal FIRST and  
reconnect negative terminal LAST.  
WIRING  
Inspect the entire generator for bad or worn electrical wiring  
or connections. If any wiring or connections are exposed  
(insulation missing) replace wiring immediately.  
PIPING AND HOSE CONNECTION  
Inspect all piping, oil hose, and fuel hose connections for  
wear and tightness. Tighten all hose clamps and check  
hoses for leaks.  
Figure 34. Battery Connections  
If any hose (fuel or oil) lines are defective replace them  
immediately.  
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GENERATOR START-UP PROCEDURE (MANUAL)  
BEFORE STARTING  
CAUTION  
STARTING (MANUAL)  
1. Place the engine speed switch (Figure 37) in the LOW  
(down) position.  
The engine’s exhaust contains harmful emissions.  
ALWAYS have adequate ventilation when operating.  
Direct exhaust away from nearby personnel.  
Figure 37. Engine Speed Switch (Low)  
WARNING  
2. Place the MPEC control switch in the MANUAL  
position to start the engine (Figure 38).  
NEVER manually start the engine with the main,GFCI or  
auxiliary circuit breakers in the ON (closed) position.  
1. Place the main,G.F.C.I.,and aux. circuit breakers (Figure  
35) in the OFF position prior to starting the engine.  
Figure 38. MPEC Control Switch  
(Manual Position)  
3. Depending on the temperature of the coolant (cold  
weather conditions), the pre-heat lamp (Figure 39) will  
light (ON) and remain on until the pre-heating cycle has  
been completed. After completion of the pre-heating  
cycle, the light will go OFF and the engine will start up  
automatically.  
Figure 35. Main, Aux. and GFCI  
Circuit Breakers (OFF)  
2. Make sure the voltage change-over board has been  
configured for the desired output voltage.  
3. Connect the load to the receptacles or the output  
terminal lugs as shown in Figure 10. These load  
connection points can be found on the output terminal  
panel and the output terminal panel’s hard wire hookup  
panel.  
Figure 39. Pre-Heat Button  
4. Once the engine starts, let the engine run for 1-2  
minutes. Listen for any abnormal noises. If any  
abnormalities exist, shut down the engine and correct  
the problem. If the engine is running smoothly, place  
the engine speed switch (Figure 40) in the HIGH (up)  
position.  
4. Tighten terminal nuts securely to prevent load wires  
from slipping out.  
5. Close all engine enclosure doors (Figure 36).  
Figure 40. Engine Speed Switch (High)  
5. Verify that the engine running  
status LED on the MPEC unit  
(Figure 41) is ON (lit) after the  
engine has been started.  
CORRECT  
INCORRECT  
Figure 36. Engine Enclosure Doors  
Figure 41. Engine Running LED (ON)  
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GENERATOR START-UP PROCEDURE (MANUAL)  
6. The generator’s frequency meter (Figure 42) should be  
displaying the 60 cycle output frequency in HERTZ.  
10. The coolant temperature gauge (Figure 47) will  
indicate the coolant temperature. Under normal  
operating conditions the coolant temperature should  
be between 167°~203°F (75°~95°C) (Green Zone).  
Figure 47. Coolant Temperature Gauge  
11. The tachometer gauge (Figure 48) will indicate the  
speed of the engine when the generator is operating.  
Under normal operating conditions this speed is  
approximately 1800 RPM’s.  
Figure 42. Frequency Meter  
7. The generator’s AC-voltmeter (Figure 43) will display  
the generator’s output in VOLTS. If the voltage is not  
within the specified tolerance, use the voltage  
adjustment control knob (Figure 44) to increase or  
decrease the desired voltage.  
Figure 48. Engine Tachometer Gauge  
12. Place the main, GFCI, and aux. circuit breakers in the  
ON position (Figure 49).  
Figure 43. Voltmeter  
Figure 44. Voltage Adjust Control Knob  
8. The ammeter (Figure 45) will indicate zero amps with  
no load applied. When a load is applied, the ammeter  
will indicate the amount of current that the load is  
drawing from the generator.  
Figure 49. Main, Aux. and GFCI  
Circuit Breakers (ON)  
13. Observe the generator’s ammeter (Figure 50) and  
verify it reads the anticipated amount of current with  
respect to the load. The ammeter will only display a  
current reading if a load is in use.  
Figure 45. Ammeter (No Load)  
9. The engine oil pressure gauge (Figure 46) will indicate  
the oil pressure of the engine. Under normal operating  
conditions the oil pressure is approximately 28 to 85  
psi. (193~586 kPa).  
Figure 50. Ammeter (Load)  
14. The generator will run until manually stopped or an  
abnormal condition occurs.  
Figure 46. Oil Pressure Gauge  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 35  
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GENERATOR START-UP PROCEDURE (AUTO MODE)  
When starting generator in AUTO mode use the “Manual  
Start-up” procedure except where noted (see below).  
STARTING (AUTO MODE)  
DANGER  
1. Perform steps 1 through 5 in the Before Starting section  
as outlined in the Manual Starting Procedure.  
Before connecting this generator to any  
building’s electrical system, a licensed  
electrician must install an isolation  
(transfer) switch. Serious damage to  
the building’s electrical system may occur without this  
transfer switch.  
2. Place the engine speed switch (Figure 51) in the  
HIGH position  
CAUTION  
Figure 51. Engine Speed Switch (High)  
When connecting the generator to a isolation (transfer)  
switch, ALWAYS have power applied to the generator’s  
internal battery charger.This will ensure that the engine  
will not fail due to a dead battery.  
3. Place the MPEC Control Switch (Figure 52) in the  
AUTO position.  
NOTICE  
When the generator is set in the AUTO mode, the  
generator will automatically start in the event of  
commercial power falling below a prescribed level  
by means of a contact closure that is generated  
automatically by a transfer switch.  
Figure 52. MPEC Control Switch (AUTO)  
4. Continue operating the generator as outlined in the  
Manual Start-up procedure (start at step 5).  
WARNING  
When running the generator in the AUTO mode,  
remember the generator can start up at any time without  
warning. NEVER attempt to perform any maintenance  
when the generator is in the auto mode.  
CAUTION  
The engine speed switch must be set to the “High”  
position when running in the auto-start mode. Failing  
to set the switch in the proper position can result in  
damage to your generator when it turns on.  
NOTICE  
When the MPEC control switch is placed in the AUTO  
position, the engine glow plugs will be warmed and the  
engine will start automatically.  
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GENERATOR SHUT-DOWN PROCEDURES  
EMERGENCY SHUTDOWN PROCEDURE  
WARNING  
1. To stop the engine in the event of an emergency, PUSH  
the emergency stop button (Figure 55) inward. This  
button is located on the engine operating panel, see  
Figure 5.  
NEVER stop the engine suddenly except in an  
emergency.  
NORMAL SHUTDOWN PROCEDURE  
To shutdown the generator, use the following procedure:  
1. Place both the MAIN, GFCI and LOAD circuit breakers  
as shown in Figure 35 to the OFF position.  
2. Place the engine speed switch (Figure 53) in the “LOW”  
(down) position.  
Figure 55. Emergency Stop Button  
Figure 53. Engine Speed Switch (Low)  
3. Let the engine cool by running it at low speed for 3-5  
minutes with no load applied.  
4. Place the MPEC Control Switch (Figure 54) to the  
OFF/RESET position.  
Figure 54. MPEC Control Switch (Off/Reset)  
5. Verify that all the status LEDs on the MPEC display  
are OFF (not lit).  
6. Remove all loads from the generator.  
7. Inspect entire generator for any damage or loosening  
of components that may have occurred during  
operation.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 37  
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MAINTENANCE  
10 Hrs  
DAILY  
1000  
Hrs  
Table 12. Inspection/Maintenance  
250 Hrs 500 Hrs  
Check Engine Fluid Levels  
Check Air Cleaner  
X
X
X
X
X
X
Check Battery Acid Level  
Check Fan Belt Condition  
Check for Leaks  
Check for Loosening of Parts  
Replace Engine Oil and Filter * 1  
Clean Air Filter  
X
X
Engine  
Check Fuel Filter/Water Separator Bowl  
Clean Unit, Inside and Outside  
Change Fuel Filter  
Clean Radiator and Check Coolant Protection Level*2  
Replace Air Filter Element * 3  
Check all Hoses and Clamps * 4  
Clean Inside of Fuel Tank  
X
X
X
X
X
X
X
Measure Insulation Resistance Over 3M ohms  
X
Generator  
Check Rotor Rear Support Bearing  
Replace engine oil and filter at 100 hours, first time only.  
X
1
*
2
*
Add “Supplemental Coolant Additives (SCA’S)” to recharge the engine coolant.  
Replace primary air filter element when restriction indicator shows a vacuum of 625 mm (25 in. H20).  
If blowby hose needs to be replaced, ensure that the slope of the blowby hose is at least a 1/2 inch per foot,  
3
*
4
*
with no sags or dips that could collect moisture and/or oil.  
GENERAL INSPECTION  
Prior to each use, the generator should be cleaned and  
inspected for deficiencies. Check for loose, missing or  
damaged nuts, bolts or other fasteners. Also check for  
fuel, oil, and coolant leaks. Use Table 14 as a general  
maintenance guideline Engine Side (Refer to the Engine  
Instruction Manual)  
AIR CLEANER  
Every 250 hours: Remove air cleaner element (Figure 56)  
and clean the heavy duty paper element with light spray of  
compressed air. Replace the air cleaner as needed.  
Figure 56. Air Cleaner/Indicator  
NOTICE  
Air Cleaner with Dust Indicator  
The air filter should not be changed until the indicator  
reads “RED”. Dispose of old air filter. It may not be  
cleaned or reused..  
This indicator (Figure 56) is attached to the air cleaner.  
When the air cleaner element is clogged, air intake  
restriction becomes greater and the dust indicator signal  
shows RED meaning the element needs changing or  
service. After changing the air element, press the dust  
indicator button to reset the indicator.  
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MAINTENANCE  
If the engine is operating in very dusty or dry grass  
conditions, a clogged air cleaner will result.This can lead to  
a loss of power, excessive carbon buildup in the combustion  
chamber and high fuel consumption. Change air cleaner  
more frequently if these conditions exists.  
FUEL TANK INSPECTION  
In addition to cleaning the fuel tank, the following  
components should be inspected for wear:  
Rubber Suspension — look for signs of wear or  
deformity due to contact with oil. Replace the rubber  
suspension if necessary.  
FUEL ADDITION  
Add diesel fuel (the grade may vary according to season  
and locations).  
Fuel Hoses — inspect nylon and rubber hoses for signs  
of wear, deterioration and hardening.  
Removing Water from the Fuel Tank  
FuelTank Lining — inspect the fuel tank lining for signs  
of excessive amounts of oil or other foreign matter.  
After prolonged use, water and other impurities accumulate  
in the bottom of the tank. Occasionally inspect the fuel  
tank for water contamination and drain the contents if  
required.  
Replacing Fuel Filter  
Replace the fuel filter cartridge with new one every 500  
hours or so.  
During cold weather, the more empty volume inside the  
tank, the easier it is for water to condense. This can be  
reduced by keeping the tank full with diesel fuel.  
Loosen the drain plug at the lower top of the fuel filter.  
Drain the fuel in the fuel body together with the mixed  
water. DO NOT spill the fuel during disassembly.  
Cleaning Inside the Fuel Tank  
Vent any air  
Drain the fuel inside the fuel tank completely.Using a spray  
washer (Figure 57) wash out any deposits or debris that  
have accumulated inside the fuel tank.  
AIR REMOVAL  
If air enters the fuel injection system of a diesel engine,  
starting becomes impossible. After running out of fuel,  
or after disassembling the fuel system, bleed the system  
according to the following procedure. See the Cummins  
Engine Manual for details.  
Figure 57. Fuel Tank Cleaning  
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MAINTENANCE  
To restart after running out of fuel, turn the switch to the  
“ON” position for 15-30 seconds.Try again, if needed.This  
unit is equipped with an automatic air bleeding system.  
RADIATOR CLEANING  
The radiator (Figure 58) should be sprayed (cleaned) with  
a high pressure washer when excessive amounts of dirt  
and debris have accumulated on the cooling fins or tube.  
When using a high pressure washer, stand at least 5 feet  
(1.5 meters) away from the radiator to prevent damage to  
the fins and tube.  
CHECK OIL LEVEL  
Check the crankcase oil level prior to each use, or when the  
fuel tank is filled.Insufficient oil may cause severe damage  
to the engine. Make sure the generator is level. The oil  
level must be between the two notches on the dipstick as  
shown in Figure 27.  
Replacing Oil Filter  
Remove the old oil filter.  
Apply a film of oil to the gasket on the new oil filter.  
Install the new oil filter.  
After the oil cartridge has been replaced, the engine oil  
will drop slightly.Run the engine for a while and check for  
leaks before adding more oil if needed. Clean excessive  
oil from engine.  
Figure 58. Radiator Cleaning  
FLUSHING OUT RADIATOR AND REPLACING  
COOLANT  
GENERATOR STORAGE  
For long term storage of the generator the following is  
recommended:  
Open both cocks located at the crankcase side and at  
the lower part of the radiator and drain coolant. Open  
the radiator cap while draining. Remove the overflow  
tank and drain.  
Drain the fuel tank completely.Treat with a fuel stabilizer  
if necessary.  
Check hoses for softening and kinks. Check clamps for  
signs of leakage.  
Completely drain the oil from the crankcase and refill if  
necessary with fresh oil.  
Tighten both cocks and replace the overflow tank.  
Clean the entire generator, internal and external.  
Cover the generating set and store in a clean, dry place.  
Disconnect the battery.  
Replace with coolant as recommended by the engine  
manufacturer.  
Close radiator cap tightly.  
Make sure engine coolant is at proper level.  
Flush the radiator by running clean tap water through  
radiator until signs of rust and dirt are removed. DO  
NOT clean radiator core with any objects, such as a  
screwdriver.  
If generator is mounted on a trailer, jack trailer up and  
place on blocks so tires do not touch the ground or block  
and completely remove the tires.  
WARNING  
Allow engine to cool when flushing out  
radiator. Flushing the radiator while hot  
could cause serious burns from water or  
steam.  
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MAINTENANCE  
If the generator will be used daily, the battery should  
normally not require charging. If the generator will be idle  
(not used) for long periods of time, apply power to the  
battery charger receptacle via commercial power using a  
power cord of adequate size.  
JACKETWATERHEATERANDINTERNALBATTERY  
CHARGER 120 VAC INPUT RECEPTACLES  
(OPTIONAL)  
This generator can be optionally equipped with two 120  
VAC, 20 amp input receptacles located on the output  
terminal panel.  
NOTICE  
To ensure adequate starting capability, always have  
power applied to the generator's internal battery  
charger..  
The purpose of these receptacles is to provide power via  
commercial power to the jacket water heater and internal  
battery charger.  
These receptacles will ONLY function when commercial  
power has been supplied to them (Figure 59). To apply  
commercial power to these receptacles, a power cord of  
adequate size will be required (See Table 6).  
When using the generator in hot climates there is no reason  
to apply power to jacket water heater. However, if the  
generator will be used in cold climates it is always a good  
idea to apply power to the jacket water heater at all times.  
To apply power to the jacket water heater simply apply  
power to the jacket water heater receptacle via commercial  
power using an power cord of adequate size.  
Figure 59. Battery Charger and Jacket Water  
Heater Power Connections  
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TRAILER MAINTENANCE  
8. Tire Size — Indicates the diameter of the tire in  
inches (10,12,14, etc.), and the width in millimeters  
(175,185,205, etc.). The tire diameter must match the  
diameter of the tire rim.  
TRAILER MAINTENANCE  
This section is intended to provide the user with generic  
trailer service and maintenance information. The service  
and maintenance guidelines referenced in this section refer  
to a wide range of trailers.  
9. Tire Ply — The tire ply (layers) number is rated in  
letters; 2-ply,4-ply,6-ply, etc.  
Remember periodic inspection of the trailer will ensure safe  
towing of the generator and will prevent personal injury and  
damage to the equipment.  
10. Wheel Hub — The wheel hub is connected to the  
trailer’s axle.  
11. Tire Rim — Tires mounted on a tire rim. The tire rim  
must match the size of the tire.  
The definitions below describe some of the major  
components of a typical trailer that would be used with  
the generator.  
12. Lug Nuts — Used to secure the wheel to the wheel  
hub. Always use a torque wrench to tighten down  
the lug nuts. See Table 18 and Figure 62 for lug nut  
tightening and sequence.  
1. Fuel Cell — Provides an adequate amount of fuel for  
the equipment in use. Fuel cells must be empty when  
transporting equipment.  
13. Axle — Indicates the maximum weight the axle can  
support in pounds, and the diameter of the axle  
expressed in inches. Please note that some trailers  
have a double axle.This will be shown as 2-6000 lbs.,  
meaning two axles with a total weight capacity of 6000  
pounds.  
2. Braking System — System employed in stopping  
the trailer.Typical braking systems are electric, surge,  
hydraulic, hydraulic-surge and air.  
3. GVWR — Gross Vehicle Weight Rating (GVWR) is  
the maximum number of pounds the trailer can carry,  
including the fuel cell (empty).  
14. Suspension — Protects the trailer chassis from shocks  
transmitted through the wheels. Types of suspension  
used are leaf, Q-flex, and air ride.  
4. Frame Length — Measurement is from the ball hitch  
to the rear bumper (reflector).  
5. Frame Width — Measurement is from fender to  
fender  
15. Electrical — Electrical connectors (looms) are provided  
with the trailer so the brake lights and turn signals can  
be connected to the towing vehicle.  
6. Jack Stand Trailer support device with maximum  
pound requirement from the tongue of the trailer.  
16. Application — Indicates which units can be employed  
on a particular trailer.  
7. Coupler — Type of hitch used on the trailer for  
towing.  
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TRAILER MAINTENANCE  
BRAKES  
Hydraulic Surge Brakes  
Trailer brakes should be inspected the first 200 miles of  
operation.This will allow the brake shoes and drums to seat  
properly.After the first 200 mile interval, inspect the brakes  
every 3,000 miles. If driving over rough terrain, inspect the  
brakes more frequently.  
Hydraulic surge brakes (Figure 60) should not require any  
special attention with the exception of routine maintenance  
such as shoe and lining replacement. Brake lines should  
be periodically checked for cracks, kinks, or blockage.  
Figure 60 displays the major hydraulic surge brake  
components that will require inspection and maintenance.  
Please inspect these components as required using steps  
1 through 8 and Table 15 as listed below:  
Brake Adjustment  
1. Place the trailer on jack stands. Make sure the jack  
stands are placed on secure level ground.  
2. Check the wheel and drum for free rotation.  
3. Remove the adjusting hole cover from the adjusting  
slot at the bottom brake backing plate.  
Figure 60. Hydraulic Brake Components  
4. With a screwdriver or standard adjusting tool, rotate  
the star wheel of the adjuster assembly to expand the  
brake shoes.  
Actuator  
Hydraulic surge braking requires the installation of an  
actuator at the tongue of the trailer. Remember the surge  
or push of the trailer toward the tow vehicle automatically  
synchronizes the trailer brakes with the tow vehicle brakes.  
As the trailer pushes against the tow vehicle the actuator  
telescopes together and applies force to the master cylinder,  
supplying hydraulic pressure to the trailer brakes.  
5. Adjust the brake shoes outward until the pressure of  
the lining against the wheel drum makes the wheel  
difficult to turn.  
6. Adjust, rotate the star wheel in the opposite direction  
until the wheel rotates freely with slight lining drag.  
7. Replace the adjusting hole cover and lower the trailer  
to the ground.  
Periodicallycheckandtestthesurgeactuatortomakesurethat  
it is functioning correctly. Never use an undersize actuator.  
8. Repeat steps 1 through 7 on the remaining brakes.  
Table 13. Hydraulic Brake Troubleshooting  
Symptom  
Possible Cause  
Solution  
No Brakes  
Brake line broken or kinked?  
Brake lining glazed?  
Repair or replace.  
Reburnish or replace.  
Correct weight.  
Trailer overloaded?  
Weak Brakes or Brakes Pull to  
One Side  
Brake drums scored or grooved?  
Tire pressure correct?  
Machine or replace.  
Inflate all tires equally.  
Match tires.  
Tires unmatched on the same axle?  
Brake components loose, bent or  
broken?  
Replace components.  
Locking Brakes  
Noisy Brakes  
Brake drums out-of-round?  
System lubricated?  
Replace.  
Lubricate.  
Brake components correct?  
Replace and correct.  
Install new shoes and  
linings.  
Brake lining thickness incorrect or  
not adjusted correctly?  
Dragging Brakes  
Replace rubber parts  
fill with dot 4 fluid.  
Enough brake fluid or correct fluid?  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 43  
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TRAILER MAINTENANCE  
TIRES/WHEELS/LUG NUTS  
Suspension  
Tires and wheels are a very important and critical  
components of the trailer.When specifying or replacing the  
trailer wheels it is important the wheels, tires, and axle are  
properly matched.  
The leaf suspension springs and associated components  
(Figure 61) should be visually inspected every 6,000 miles  
for signs of excessive wear, elongation of bolt holes, and  
loosening of fasteners. Replace all damaged parts  
(suspension) immediately.Torqued suspension components  
as detailed in Table 17.  
CAUTION  
ALWAYS wear safety glasses when  
removing or installing force fitted parts.  
Failure to comply may result in serious  
injury.  
CAUTION  
DO NOT attempt to repair or modify a  
wheel. DO NOT install in inner tube to  
correct a leak through the rim. If the rim is  
cracked, the air pressure in the inner tube  
may cause pieces of the rim to explode (break off) with  
great force and cause serious eye or bodily injury.  
Figure 61. Major Suspension Components  
Tire Wear/Inflation  
Tire inflation pressure is the most important factor in tire  
life. Pressure should be checked cold before operation DO  
NOT bleed air from tires when they are hot!.Check inflation  
pressure weekly during use to insure the maximum tire life  
and tread wear.  
Table 15. Suspension Torque Requirements  
Item  
Torque (Ft.-Lbs.)  
Min-30 Max-35  
Min-45 Max-60  
Min-45 Max-60  
3/8" U-Bolt  
7/16" U-Bolt  
1/2" U-Bolt  
Table 16 (Tire Wear Troubleshooting) will help pinpoint the  
causes and solutions of tire wear problems.  
Snug fit only. Parts must rotate freely.  
Locking nuts or cotter pins are  
Shackle Bolt  
Spring Eye Bolt  
Table 14. Tire Wear Troubleshooting  
provided to retain nut-bolt assembly.  
Wear Pattern  
Cause  
Solution  
Shoulder Type  
Shackle Bolt  
Min-30 Max-50  
Adjust pressure to particular  
load per tire manufacturer.  
Center Wear Over inflation.  
Edge Wear Under inflation.  
Adjust pressure to particular  
load per tire manufacturer.  
Make sure load does not  
exceed axle rating.  
Align wheels.  
Loss of camber  
Side Wear  
or overloading.  
Toe Wear  
Cupping  
Incorrect toe-in.  
Out-of-balance.  
Align wheels.  
Check bearing adjustment  
and balance tires.  
Wheel lockup and Avoid sudden stops when  
tire skidding. possible and adjust brakes.  
Flat Spots  
PAGE 44 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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TRAILER MAINTENANCE  
Lug Nut Torque Requirements  
It is extremely important to apply and maintain proper wheel  
mounting torque on the trailer. Be sure to use only the  
fasteners matched to the cone angle of the wheel. Proper  
procedure for attachment of the wheels is as follows:  
1. Start all wheel lug nuts by hand.  
2. Torque all lug nuts in sequence (see Figure 62). DO  
NOT torque the wheel lug nuts all the way down.  
Tighten each lug nut in 3 separate passes as defined  
by Table 18.  
3. After first road use, retorque all lug nuts in sequence.  
Check all wheel lug nuts periodically.  
Table 16. Tire Torque Requirements  
First Pass  
FT-LBS  
Second Pass  
FT-LBS  
Third Pass  
FT-LBS  
Wheel Size  
12"  
13"  
14"  
15"  
16"  
20-25  
20-25  
20-25  
20-25  
20-25  
35-40  
35-40  
50-60  
50-60  
50-60  
50-65  
50-65  
90-120  
90-120  
90-120  
Figure 62. Wheel Lug Nuts  
Tightening Sequence  
NOTICE  
NEVER use an pneumatic air gun to tighten wheel  
lug nuts.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 45  
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TRAILER WIRING DIAGRAM  
Figure 63. Trailer/Towing Vehicle Wiring Diagram  
PAGE 46 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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GENERATOR WIRING DIAGRAM  
Figure 64. Generator Wiring Diagram  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 47  
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ENGINE WIRING DIAGRAM  
Figure 65. Engine Wiring Diagram  
PAGE 48 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NOTES  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 49  
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TROUBLESHOOTING (GENERATOR)  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, use Table 19 shown below for diagnosis of the Generator. If the problem cannot be remedied, consult our  
company’s business office or service plant.  
Table 17. Generator Troubleshooting  
Symptom  
Possible Problem  
AC Voltmeter defective?  
Is wiring connection loose?  
Is AVR defective?  
Solution  
Check output voltage using a voltmeter.  
Check wiring and repair.  
No Voltage Output  
Replace if necessary.  
Defective Rotating Rectifier? Check and replace.  
Defective Exciter Field?  
Is engine speed correct?  
Check for approximately 19 ohms across J & K on CN1  
Turn engine throttle lever to “High”.  
Low Voltage Output  
High Voltage Output  
Is wiring connections loose? Check wiring and repair.  
Defective AVR? Replace if necessary.  
Is wiring connections loose? Check wiring and repair.  
Defective AVR?  
Replace if necessary.  
Short Circuit in load?  
Over current?  
Check load and repair.  
Confirm load requirements and reduce.  
Check and replace.  
Circuit Breaker Tripped  
Defective circuit breaker?  
Over current Relay actuated? Confirm load requirement and replace.  
PAGE 50 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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TROUBLESHOOTING (ENGINE CONTROLLER)  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown,  
useTable 20 (Engine ControllerTroubleshooting) as a basic guideline for troubleshooting the Microprocessor Engine Controller  
unit (MPEC). If the problem cannot be remedied, consult our company's business office or service plant.  
Table 18. Engine Controller Troubleshooting (MPEC)  
Symptom  
Possible Problem  
Low oil level?  
Solution  
Fill oil level.  
Oil pressure sending unit failure?  
Time delay malfunction in controller?  
Wire shorted?  
Replace oil pressure sending unit.  
Refer to dealer.  
Low oil pressure light is on.  
Inspect/repair wire.  
Low coolant level?  
Fill coolant level.  
Low coolant level light is on.  
(Optionally installed)  
Sending unit failure?  
Replace sending unit.  
Replace/charge battery.  
Tighten/replace fan belt.  
Low battery voltage?  
Fan belt tension incorrect?  
Air flow is not circulating through radiator? Clean/repair radiator grill.  
Doors open?  
Close doors.  
Exhaust leaking?  
Replace/repair gaskets or faulty part.  
Check/reduce load.  
Replace thermostat.  
Clean all air intakes.  
Replace temperature switch.  
Fill fuel level.  
High coolant temperature  
light is on.  
Generator being overloaded?  
Thermostat failure?  
Air intake blocked?  
Temperature switch failure  
No or low fuel?  
Overcrank light is on.  
Overspeed light is on.  
Loss of MPU light(s) or on.  
Controller needs to be calibrated?  
RPM engine speed too high?  
Refer to dealer.  
Adjust RPM.  
Governor actuator needs to be adjusted? Adjust governor actuator.  
Governor controller needs to be adjusted? Adjust governor controller.  
Engine controller needs to be calibrated? Refer to dealer.  
Magnetic pick up out of adjustment?  
Magnetic pick up dirty?  
Adjust magnetic pick up.  
Clean magnetic pick up.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 51  
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TROUBLESHOOTING (DIAGNOSTIC LAMP)  
The engine controller of this generator diagnoses problems  
that arise from the engine control system and the engine  
itself. Press the diagnostic button (Figure 66) on the  
diagnostic panel to determine if an engine malfunction has  
occurred.  
Figure 66. Diagnostic Panel  
METHOD OF OPERATION  
1. Normally, the diagnostic lamp will be dimly lit when  
the MPEC Control Switch is placed in the MANUAL  
position.  
2. If engine trouble occurs, the diagnostic lamp will be  
brightly lit as long as the control switch is left in the  
manual position.  
3. The diagnostic lamp will indicate that an engine  
malfunction has occurred.  
NOTICE  
For a complete understanding of error codes and  
troubleshooting procedures, refer to the enclosed  
engine instruction manual  
NOTICE  
If the engine is cranked while the diagnostic switch  
is in the “ON” position, the engine will not be stopped  
even if the starter switch is turned to the “OFFposition.  
In such case, turn the diagnostic switch to the “OFF”  
position..  
PAGE 52 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NOTES  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 53  
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EXPLANATION OF CODE IN REMARKS COLUMN  
The following section explains the different symbols and  
QTY. Column  
remarks used in the Parts section of this manual. Use the  
help numbers found on the back page of the manual if there  
are any questions.  
Numbers Used — Item quantity can be indicated by a  
number, a blank entry, or A/R.  
A/R (As Required) is generally used for hoses or other  
parts that are sold in bulk and cut to length.  
NOTICE  
The contents and part numbers listed in the parts  
section are subject to change without notice.Multiquip  
does not guarantee the availability of the parts listed.  
A blank entry generally indicates that the item is not sold  
separately.Other entries will be clarified in the “Remarks”  
Column.  
SAMPLE PARTS LIST  
REMARKS Column  
NO. PART NO. PART NAME  
QTY. REMARKS  
Some of the most common notes found in the “Remarks”  
Column are listed below. Other additional notes needed  
to describe the item can also be shown.  
1
2%  
12345  
BOLT .....................1 .....INCLUDES ITEMS W/%  
WASHER, 1/4 IN. ..........NOT SOLD SEPARATELY  
WASHER, 3/8 IN. ..1 .....MQ-45T ONLY  
2% 12347  
3
4
12348  
12349  
HOSE ..................A/R ...MAKE LOCALLY  
BEARING ..............1 .....S/N 2345B AND ABOVE  
Assembly/Kit — All items on the parts list with the  
same unique symbol will be included when this item is  
purchased.  
NO. Column  
Indicated by:  
Unique Symbols — All items with same unique  
symbol  
“INCLUDES ITEMS W/(unique symbol)”  
(@, #, +, %, or >) in the number column belong to the  
same assembly or kit, which is indicated by a note in the  
“Remarks” column.  
Serial Number Break — Used to list an effective serial  
number range where a particular part is used.  
Indicated by:  
Duplicate Item Numbers — Duplicate numbers indicate  
multiple part numbers, which are in effect for the same  
general item, such as different size saw blade guards in  
use or a part that has been updated on newer versions  
of the same machine.  
“S/N XXXXX AND BELOW”  
“S/N XXXX AND ABOVE”  
“S/N XXXX TO S/N XXX”  
Specific Model Number Use — Indicates that the part  
is used only with the specific model number or model  
number variant listed. It can also be used to show a  
part is NOT used on a specific model or model number  
variant.  
NOTICE  
When ordering a part that has more than one item  
number listed, check the remarks column for help in  
determining the proper part to order.  
Indicated by:  
“XXXXX ONLY”  
“NOT USED ON XXXX”  
PART NO. Column  
Numbers Used — Part numbers can be indicated by a  
number, a blank entry, or TBD.  
“Make/Obtain Locally” — Indicates that the part can  
be purchased at any hardware shop or made out of  
available items.Examples include battery cables, shims,  
and certain washers and nuts.  
TBD (To Be Determined) is generally used to show a  
part that has not been assigned a formal part number  
at the time of publication.  
“Not Sold Separately— Indicates that an item cannot  
be purchased as a separate item and is either part of an  
assembly/kit that can be purchased, or is not available  
for sale through Multiquip.  
A blank entry generally indicates that the item is not sold  
separately or is not sold by Multiquip. Other entries will  
be clarified in the “Remarks” Column.  
PAGE 54 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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SUGGESTED SPARE PARTS  
DCA300SSC WHISPERWATT GENERATOR WITH  
CUMMINGS QSL9-G3 DIESEL ENGINE  
1 to 3 units  
QTY. P/N  
DESCRIPTION  
1............0602015120..........HOSE, RADIATOR UPPER ENGINE  
1............0602015121..........HOSE, RADIATOR UPPER/LOWER  
1............0602015122..........HOSE, RADIATOR LOWER  
3............0602015244..........BELT, FAN  
1............4921744................SENSOR, OIL PRESSURE  
1............0602122272..........OIL PRESSURE UNIT  
1............0602123267..........WATER TEMPERATURE UNIT  
1............0602210189..........WATER TEMP. SWITCH ENGINE  
1............0602123290..........SWITCH, COOLANT LEVEL  
6............0810105400..........FILTER, FUEL TANK  
6............0602042589..........FUEL FILTER CARTRIDGE  
6............0602042589..........CARTRIDGE WATER SEPERATOR  
6............0602041224..........FILTER, OIL CARTRIDGE  
6............0602045193..........FILTER, COOLANT CARTRIDGE  
3............0602046638..........ELEMENT AIR CLEANER OUTER  
3............0602046639..........ELEMENT AIR CLEANER INNER  
1............0601808803..........CIRCUIT BREAKER 1P 20A  
1............0601808804..........CIRCUIT BREAKER 2P 50A  
2............LY2DUS24VDC ....RELAY  
NOTICE  
Part number on this Suggested Spare Parts list may  
supersede/replace the P/N shown in the text pages of  
this book.  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 55  
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GENERATOR ASSY.  
PAGE 56 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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GENERATOR ASSY.  
NO.  
1
PART NO.  
C2110000002  
PART NAME  
ROTOR ASSY..........................................1............. INCLUDES ITEMS W/#  
QTY.  
REMARKS  
1-1#  
1-2#  
1-3#  
1-4#  
1-4A#  
1-4B#  
1-5#  
1-6#  
1-7#  
1-8#  
1-9#  
1-10#  
1-11#  
1-12#  
1-13#  
2
FIELD ASSY  
RESISTOR, 80W 300K  
RECTIFIER  
HEX HD. CAP SCREW  
WASHER, LOCK  
WASHER, FLAT  
FAN  
COUPLING DISK  
WASHER, COUPLING HUB  
BALANCING PLATE.................................1............. PURCHASE ITEM 1-11 AS A SET  
HEX HEAD BOLT  
WASHER, LOCK  
BALANCING WEIGHT KIT  
BEARING FLANGE  
BEARING  
COUPLING RING  
HEX HEAD BOLT  
WASHER, LOCK  
HEX HEAD BOLT  
WASHER, LOCK  
STATOR ASSY  
RUBBER SEAL  
CLAMPER  
RUBBER SEAL  
CLAMPER  
RUBBER SEAL  
HEX HEAD BOLT  
WASHER, FLAT  
COVER  
1
2
1
2
2
2
1
12  
1
0601842402  
0601823282  
0018205020  
0040005000  
0041205000  
8201070002  
8201611004  
C3164200004  
8201015003  
0012116045  
0042616000  
0601000209  
C3112500004  
0071906315  
C2163400003  
0343206200  
0043606000  
0010312040  
0042512000  
C2130100103  
0226200430  
8201323004  
0223300140  
8201323103  
0221200350  
0010110035  
0041210000  
C2132200003  
0226000275  
0225000500  
0017106016  
0601850144  
C3154000002  
C3138000003  
0012110080  
0042610000  
0041210000  
0017112045  
C3154300104  
C3154300004  
0010106060  
0040006000  
0041206000  
10  
10  
1
1
1
1
8
8
12  
12  
1
1
1
1
1
1
2
2
1
2
1
6
1
1
1
4
4
4
8
1
1
4
4
3
4
5#  
5A#  
6
6-1  
6-2  
6-3  
6-4  
6-5  
6-6  
6-6A  
6-7  
6-8  
6-9  
6-10  
6-11  
7
RUBBER SEAL  
RUBBER SEAL  
HEX HEAD BOLT  
GROMMET  
END BRACKET  
FIELD ASSY, EXCITER  
HEX HEAD BOLT  
WASHER, LOCK  
WASHER, FLAT  
HEX HEAD BOLT  
COVER, BEARING  
GASKET, BEARING  
HEX HEAD BOLT  
WASHER, LOCK  
WASHER, FLAT  
8
9
9 A  
9 B  
10  
11  
12  
13  
13A  
13B  
4
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 57  
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GENERATOR ASSY. (CONTINUED)  
PAGE 58 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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GENERATOR ASSY. (CONTINUED)  
NO.  
14  
15  
16  
17  
17A  
18  
19  
20  
20A  
21  
PART NO.  
PART NAME  
QTY.  
1
8
REMARKS  
C3154400003  
0017106015  
C3164600103  
0010310030  
0042510000  
C2163700004  
0070506208  
0010312040  
0042512000  
C3132300014  
0010106030  
0041206000  
0600815000  
0605000012  
0030020000  
0040020000  
SUCTION COVER  
HEX HEAD BOLT  
COUPLING ADAPTER  
HEX HEAD BOLT  
WASHER, LOCK  
SPACER, BEARING  
BEARING, 6208ZZ  
HEX HEAD BOLT  
WASHER, LOCK  
COVER, FAN  
HEX HEAD BOLT  
WASHER, FLAT  
NUT  
RUBBER SUSPENSION  
HEX NUT  
WASHER, LOCK  
1
12  
12  
1
1
16  
16  
1
1
1
1
2
4
4
22  
22A  
22B  
23  
24  
24A  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 59  
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CONTROL BOX ASSY.  
PAGE 60 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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CONTROL BOX ASSY.  
NO.  
1
2
3
4
5
6
7
8
PART NO.  
PART NAME  
CONTROL BOX  
QTY.  
1
3
6
1
1
4
1
4
1
2
1
10  
20  
3
REMARKS  
M5213000002  
0601809659  
0027106015  
0601807513  
C2261600204  
0017108020  
0601820604  
0027106015  
0601842468  
0027103010  
C2274000103  
8201852104  
0017108030  
C2277200004  
8201853104  
8201852504  
0801830704  
0040012000  
0041412000  
0017110030  
0601820847  
0601820840  
0027104016  
0207004000  
0601815153  
0027104016  
0601802218  
0601802149  
0601802131  
CURRENT TRANSFORMER  
MACHINE SCREW  
CIRCUIT BREAKER, 800A  
BRACKET, CIRCUIT BREAKER  
HEX HEAD BOLT  
AUTOMATIC VOLTAGE REGULATOR  
MACHINE SCREW  
RESISTOR, 5W 150 OHM  
MACHINE SCREW  
CHANGE- OVER BOARD, VOLTAGE  
CHANGE TERMINAL  
HEX HEAD BOLT  
TERMINAL PLATE  
CHARGE PLATE  
HEX HEAD BOLT  
HEX HEAD BOLT  
WASHER, LOCK  
WASHER, FLAT  
HEX HEAD BOLT  
OVER CURRENT RELAY  
OVER CURRENT RELAY  
MACHINE SCREW  
HEX NUT  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
23A  
24  
25  
26  
26A  
26B  
6
13  
13  
26  
26  
4
1
1
2
2
1
2
1
1
1
1
TERMINAL BOARD  
MACHINE SCREW  
HOLDER, FUSE  
FUSE (LEFT SIDE), 10A  
FUSE (CENTER), 1A  
FUSE (RIGHT), 5A  
26C 0601802133  
27  
28  
28A  
29  
30  
31  
32  
33  
33A  
33B  
34  
35  
36  
37  
38  
36  
37  
38  
0027103020  
C3358201704  
0601806644  
0601802410  
0017106016  
M5260500003  
0017108020  
LY2DUS24V  
PTF08A  
MACHINE SCREW  
FUSE HOLDER ASSY  
FUSE, 30A  
BRACKET, FUSE HOLDER  
HEX HEAD BOLT  
SET PANEL , ELECTRIC PARTS  
HEX HEAD BOLT  
RELAY.........................................................4 ................REPLACES P/N 0601827655  
SOCKET......................................................4 ................REPLACES P/N 0601823109  
HOLDER .....................................................4 ................REPLACES P/N 0601824400  
MACHINE SCREW  
RECTIFIER  
MACHINE SCREW  
BRACKET  
DIAGNOSTIC LAMP  
MACHINE SCREW  
BRACKET  
2
1
1
1
1
1
4
PYCA1  
0027104020  
0601823240  
0027104020  
M5260500204  
0602103090  
0027104020  
M5260500204  
0602103090  
8
2
2
1
2
2
1
2
DIAGNOSTIC LAMP  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 61  
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CONTROL BOX ASSY. (CONTINUED)  
PAGE 62 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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CONTROL BOX ASSY. (CONTINUED)  
NO. PART NO.  
38 A 0601810244  
PART NAME  
BULB, DC28V  
DIAGNOSTIC BUTTON  
RESET BUTTON  
LOW IDLE SPEED SWITCH  
DIAGNOSTIC SWITCH  
RHEOSTAT, 2W 5k OHM  
HEX HEAD BOLT  
RELAY, HEATER ............................................. 1...............1210--1004--00  
HEX HEAD BOLT  
CONTROL PANEL  
CONTROL PANEL  
PIN  
FREQUENCY METER, 45~65Hz 220V  
AC AMMETER, 0~1000A  
CHANGE- OVER SWITCH, AMMETER  
AC VOLTMETER, 0~600V  
CHANGE- OVER SWITCH, VOLTMETER  
PILOT LAMP  
BULB, 13W  
RHEOSTAT (VR), 2W 1K OHM  
KNOB  
QTY.  
REMARKS  
2
1
1
1
1
1
4
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
55A  
56  
57  
58  
59  
60  
61  
61A  
62  
63  
63A  
63B  
0601831670  
0601831205  
0601830746  
0601830710  
0601840009  
0017106016  
0602201455  
0017106016  
C2224000503  
C2224001504  
0605011211  
0601807622  
0601806979  
0601801040  
0601806887  
0601801041  
0601810072  
0601810261  
0601840073  
0601840121  
ECU9988N220V  
0601830765  
0601810171  
0027104020  
0207004000  
0601830710  
C9221100004  
0040008000  
0041208000  
2
1
1
2
1
1
1
1
1
1
1
1
1
ENGINE CONTROLLER................................. 1...............REPLACES P/N 0602202545  
SWITCH  
1
1
2
2
1
2
2
2
2
4
1
1
1
1
8
1
4
1
9
4
PANEL LIGHT, DC24V  
MACHINE SCREW  
HEX NUT  
SWITCH, PANEL LIGHT  
HEX HEAD BOLT  
WASHER, LOCK  
WASHER, FLAT  
63C 0080200007  
SNAP RING  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
74  
0017108040  
3871824004  
0041206000  
0605010502  
C2214500004  
0017108020  
C2214300004  
0017108020  
C2214400504  
0017108020  
0017110025  
HEX HEAD BOLT  
STOPPER, CONTROL PANEL  
WASHER, FLAT  
SNAP PIN  
COVER, CONTROL BOX  
HEX HEAD BOLT  
SIDE PANEL, CONTROL BOX  
HEX HEAD BOLT  
PANEL, CONTROL BOX  
HEX HEAD BOLT  
HEX HEAD BOLT  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 63  
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ENGINE AND RADIATOR ASSY.  
PAGE 64 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENGINE AND RADIATOR ASSY.  
NO.  
1
1A  
1-1  
PART NO.  
PART NAME  
ENGINE, QSL9-G3  
QTY.  
1
REMARKS  
C2923200204  
0602015244  
0602046638  
BELT, FAN........................................................1 ............. 3288497  
ELEMENT, AIR CLEANER (OUTER) ..............1 ............. AF26124  
ELEMENT, AIR CLEANER (INNER)................1 ............. AF26125  
CARTRIDGE, OIL FILTER...............................1 ............. LF9009  
CARTRIDGE, COOLANT FILTER....................1 ............. WF2076  
CARTRIDGE, FUEL FILTER............................1 ............. FF5580  
CARTRIDGE, FUEL WATER SEPARATOR .....1 ............. FS19732  
CAP, AIR CLEANER ........................................1 ............. 3013238  
DUST SENSOR  
ENGINE FOOT  
HEX HEAD BOLT  
HEX NUT  
1-1A 0602046639  
1-2  
1-3  
1-4  
1-5  
1-6  
1-7  
2
0602041224  
0602045193  
0602042588  
0602042589  
0602040759  
0602040679  
M5303200004  
0010118050  
0030018000  
0040018000  
0041618000  
0605000011  
0030016000  
0040016000  
0602012737  
0010116050  
0030016000  
0040016000  
0041216000  
C2311101104  
0017112025  
0602013260  
0602014820  
0602011500  
0602015120  
0602015121  
0602015122  
0602015301  
0602015123  
0602015302  
0602015410  
0602011500  
0602014821  
0602013261  
0602015124  
0602015303  
0602022563  
0602022561  
0603306590  
0603300285  
0605511395  
1
1
2
2
2
4
2
4
4
3
3A  
3B  
3C  
4
5
5A  
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
WASHER, LOCK  
WASHER, FLAT  
RUBBER SUSPENSION  
HEX NUT  
WASHER, LOCK  
RADIATOR / INTER COOLER.........................1 ............. 0920-2216-00  
HEX HEAD BOLT  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
BRACKET, RADIATOR  
HEX HEAD BOLT  
RADIATOR PIPE..............................................1 ............. 0981-1300-00  
RADIATOR PIPE..............................................1 ............. 0981-1301-00  
HEX HEAD BOLT.............................................2 ............. 01010-81020  
RADIATOR HOSE, UPPER ENGINE...............1 ............. 4080544  
RADIATOR HOSE, UPPER/LOWER RAD.......2 ............. 3283456  
RADIATOR HOSE, LOWER.............................1 ............. 0981-1302-00  
HOSE BAND...................................................16 ............ 0980-2232-05  
RADIATOR HOSE............................................1 ............. 0900-1032-00  
HOSE BAND....................................................2 ............. 0980-2232-10  
CLAMP.............................................................1 ............. 3016478  
HEX HEAD BOLT.............................................1 ............. 01010-81020  
INTER COOLER PIPE.....................................1 ............. 0521-1097-00  
INTER COOLER PIPE.....................................1 ............. 0521-1098-00  
INTER COOLER PIPE.....................................4 ............. 3071049  
HOSE BAND....................................................8 ............. 3926704  
4
4
4
8
2
6
ADAPTER  
1
1
1
1
1
90 DEGREE ELBOW  
CONNECTOR  
ROCKNUT  
VALVE  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 65  
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ENGINE AND RADIATOR ASSY. (CONTINUED)  
PAGE 66 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENGINE AND RADIATOR ASSY. (CONTINUED)  
NO.  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
PART NO.  
PART NAME  
HOSE JOINT  
CAP  
QTY.  
REMARKS  
0603306395  
0602021070  
0269200800  
0602010220  
0602011023  
813NLU0000T  
0602011500  
0602015500  
0602013497  
0602014110  
0602013498  
0602014110  
0602014110  
0602015300  
0193601800  
0605515106  
0193601100  
0193600550  
0269501850  
0605515067  
C2357300003  
0017112025  
0017116030  
C2357300104  
0017112025  
0602122272  
M9200101504  
0803000104  
0602123267  
0602015501  
9095720140  
0602210189  
0602120481  
4993343  
1
1
1
DRAIN HOSE  
RESERVER TANK ...........................................1 ............. 0921-1223-00  
CAP..................................................................1 ............. 0920-1125-00  
COOLANT LEVEL SWITCH ............................1 ............. REPLACES P/N 0602123290  
HEX HEAD BOLT.............................................4 ............. 01010-81020  
BUSHING.........................................................1 ............. S970B  
HOSE JOINT ...................................................1 ............. 0911-0025-00  
HOSE (L=250) .................................................1 ............. 0980-1310-00  
JOINT...............................................................1 ............. 0980-1309-00  
HOSE (L=325) .................................................2 ............. 0980-1310-00  
HOSE (L=1100) ...............................................1 ............. 0980-1310-00  
HOSE BAND....................................................8 ............. 0980-2232-01  
HOSE  
1
1
1
1
1
2
1
1
1
1
2
1
1
1
1
HOSE BAND  
HOSE  
HOSE  
HOSE  
HOSE BAND  
CLAMPER ROD  
HEX HEAD BOLT  
HEX HEAD BOLT  
CLAMPER ROD  
HEX HEAD BOLT  
OIL PRESSURE UNIT  
ADAPTER  
PACKING  
WATER TEMPERATURE UNIT  
ADAPTER ........................................................1 ............. 490519  
PACKING .........................................................1 ............. REPLACES P/N 0602021109  
WATER TEMPERATURE SWITCH..................1 ............. 3408627  
PICK- UP TACHOMETER  
ALTERNATOR  
STARTER  
WATER PUMP  
THERMOSTATE W/O-RING  
SENSOR, OIL PRESSURE  
1
1
1
1
1
1
3102763  
3973114  
3285324D  
4921744  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 67  
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ENGINE OPERATING PANEL ASSY.  
PAGE 68 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENGINE OPERATING PANEL ASSY.  
NO.  
1
2
3
4
PART NO.  
PART NAME  
QTY.  
1
8
4
1
2
2
2
2
1
1
1
1
1
1
1
1
5
5
1
2
3
3
3
6
REMARKS  
C2351101903  
0017106020  
0207006000  
0602101000  
0021008080  
0030004000  
0040008000  
0041608000  
0601830710  
0601831557  
0602120095  
0602122093  
0601842450  
0602123092  
0602121081  
0602125091  
0602103090  
0601810244  
M5483000003  
0017110030  
0017110030  
0030010000  
0040010000  
OPERATING PANEL  
HEX HEAD BOLT  
HEX NUT  
BATTERY SWITCH  
MACHINE SCREW  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
ENGINE SPEED SWITCH  
EMERGENCY STOP BUTTON  
TACHOMETER  
OIL PRESSURE GAUGE  
VOLTAGE DIVIDER  
WATER TEMPERATURE GAUGE  
CHARGING AMMETER  
FUEL GAUGE  
ALARM LAMP  
BULB, DC28V  
SET FRAME  
HEX HEAD BOLT  
HEX HEAD BOLT  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
5
5A  
5B  
5C  
6
7
8
9
10  
11  
12  
13  
14  
14A  
15  
16  
17  
17A  
17B  
17C 0041610000  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 69  
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OUTPUT TERMINAL ASSY.  
PAGE 70 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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OUTPUT TERMINAL ASSY.  
NO.  
1
2
3
4
5
6
7
8
8 A  
8 B  
9
10  
11  
PART NO.  
PART NAME  
QTY.  
1
8
REMARKS  
C2231700403  
C0277500004  
0801830904  
0039320000  
0040020000  
0041420000  
3501860604  
0019110050  
0042310000  
0042410000  
0601808803  
0601808804  
C3261600704  
SET BOARD, OUTPUT TERMINAL  
OUTPUT TERMINAL  
HEX HEAD BOLT  
HEX NUT  
8
16  
24  
32  
3
5
5
5
2
3
1
1
2
2
3
10  
10  
1
WASHER, LOCK  
WASHER, FLAT  
TERMINAL PLATE  
HEX HEAD BOLT  
WASHER, LOCK  
WASHER, FLAT  
CIRCUIT BREAKER, 1P 20A  
CIRCUIT BREAKER, 2P 50A  
BRACKET, CIRCUIT BREAKER  
RUBBER CUSHION  
HEX HEAD BOLT  
RECEPTACLE  
11-1 0221200150  
12  
13  
14  
15  
0019206020  
0601814013  
0601812565  
0025304015  
RECEPTACLE, CS6369  
MACHINE SCREW  
HEX NUT  
15 A 0207004000  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
C2234500104  
0019206020  
0601815194  
0025304015  
0601850275  
0601851780  
C2237102303  
0019112045  
0042412000  
0605015604  
0205012000  
0845043704  
C2237101204  
0017108020  
C2237102403  
0019210030  
0845054204  
0805015604  
C2237101504  
C2237500104  
0017106020  
COVER  
HEX HEAD BOLT  
TERMINAL BOARD  
MACHINE SCREW  
GROMMET  
8
1
2
1
2
1
2
4
2
2
2
1
7
1
2
2
GROMMET  
COVER, OUTPUT TERMINAL  
HEX HEAD BOLT  
WASHER, FLAT  
STAY RUBBER  
HEX NUT  
SPRING  
COVER  
HEX HEAD BOLT  
COVER, OUTPUT TERMINAL  
HEX HEAD BOLT  
COLLAR  
STAY RUBBER  
COVER  
1
1
1
2
BRACKET  
HEX HEAD BOLT  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 71  
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BATTERY ASSY.  
PAGE 72 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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BATTERY ASSY.  
NO.  
1
2
3
4
5
6
7
8
PART NO.  
PART NAME  
BATTERY  
BATTERY SHEET  
BATTERY BAND  
BATTERY BOLT  
WING NUT  
QTY.  
2
2
1
2
2
2
2
1
1
1
1
2
4
4
2
2
REMARKS  
145G51  
0165614551  
C9109100604  
3972250004  
0805002904  
0037808000  
0040008000  
0041608000  
C2346600404  
C2346600304  
C2347600704  
C2346600504  
C2346200004  
0347010030  
0208110000  
0845040414  
0845041304  
0017116030  
0040516000  
0017112025  
0040512000  
WASHER, LOCK  
WASHER, FLAT  
BATTERY CABLE  
BATTERY CABLE  
BATTERY CABLE  
BATTERY CABLE  
EARTH CABLE  
HEX HEAD BOLT  
HEX NUT  
TERMINAL CAP (+)  
TERMINAL CAP (-)  
HEX HEAD BOLT  
TOOTHED WASHER  
HEX HEAD BOLT  
TOOTHED WASHER  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
1
1
1
1
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 73  
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MUFFLER ASSY.  
PAGE 74 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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MUFFLER ASSY.  
NO.  
1
2
3
4
5
6
6A  
6B  
6C  
7
PART NO.  
PART NAME  
MUFFLER  
HEX HEAD BOLT  
EXHAUST PIPE  
BEND BOLT CLAMP  
GASKET  
HEX HEAD BOLT  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
COVER  
QTY.  
REMARKS  
C2331100002  
0019210025  
M5333000003  
0602325066  
C1334200304  
0010312055  
0030312000  
0042512000  
0041612000  
C2331300004  
0017108020  
1
4
1
1
1
4
4
4
8
2
4
8
HEX HEAD BOLT  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 75  
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FUEL TANK ASSY.  
PAGE 76 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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FUEL TANK ASSY.  
NO.  
1
PART NO.  
PART NAME  
FUEL TANK  
CAP, FUEL TANK  
FUEL FILTER  
HOSE, FUEL GAUGE  
HOSE BAND  
FUEL SESOR  
PACKING  
UNIT, FUEL  
PACKING  
MACHINE SCREW  
TANK BAND  
PAD, TANK BAND  
HEX HEAD BOLT  
SUPER LOCK NUT  
TANK SHEET  
STREET ELBOW, 1/2"  
DRAIN PIPE  
QTY.  
1
1
1
1
2
1
1
1
1
5
2
4
4
2
6
1
1
1
1
1
2
1
1
1
REMARKS  
C2363000303  
0810105004  
0810105400  
0264100525  
0605515079  
0605503023  
0802120604  
0605501093  
0605516090  
0022905015  
8195523104  
0805003414  
0017108020  
0207308000  
0222100300  
0130206000  
0134306170  
0603325026  
0132006000  
C1367700304  
0019208020  
0845039604  
0191503400  
0191503700  
0605515073  
1-1  
1-2  
1-3  
1-4  
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
VALVE  
PLUG, 1/2"  
LOCK PLATE  
HEX HEAD BOLT  
RUBBER SEAL  
SUCTION HOSE  
RETURN HOSE  
HOSE BAND  
4
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 77  
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ENCLOSURE ASSY.  
PAGE 78 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENCLOSURE ASSY.  
NO.  
1
2
3
4
5
5A  
6
7
7A  
8
PART NO.  
PART NAME  
BASE  
FLOOR PANEL  
FLOOR PANEL  
HEX HEAD BOLT  
DUCT  
QTY.  
1
1
1
14  
1
1
4
1
1
1
1
10  
8
1
1
1
23  
1
4
1
4
4
4
8
8
8
8
16  
1
2
1
4
1
1
1
1
REMARKS  
C2413003202  
C3414100104  
C2414100004  
0019208020  
C2414600304  
C2494000304  
0017108020  
M5423000002  
M5493100003  
M5423000102  
M5493100003  
0017108020  
0019210025  
C2424200003  
C2424201504  
C2494101104  
0019208020  
0845042703  
0019208020  
M5433000002  
0010114050  
0030014000  
0040014000  
ACOUSTIC SHEET  
HEX HEAD BOLT  
FRONT FRAME  
ACOUSTIC SHEET  
FRONT FRAME  
ACOUSTIC SHEET  
HEX HEAD BOLT  
HEX HEAD BOLT  
COVER, FRONT FRAME  
COVER, FRONT FRAME  
ACOUSTIC SHEET  
HEX HEAD BOLT  
FILLER BRACKET  
HEX HEAD BOLT  
CENTER FRAME  
HEX HEAD BOLT  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
HEX HEAD BOLT  
HEX NUT  
WASHER, LOCK  
WASHER, FLAT  
COVER  
8A  
9
10  
11  
12  
12A  
13  
14  
15  
16  
17  
17A  
17B  
17C 0041214000  
18  
18A  
18B  
18C 0041214000  
19  
20  
21  
22  
23  
23A  
24  
24A  
25  
26  
27  
28  
29  
30  
31  
32  
32A  
0010114040  
0030014000  
0040014000  
C2367700404  
0019208020  
M5443000002  
0019210025  
M5443300003  
M5493300004  
M5443300104  
M5493300104  
0207008000  
0019208020  
M5453000003  
M5453000103  
8225147004  
0207306000  
B9114000102  
0021806016  
0030006000  
HEX HEAD BOLT  
REAR FRAME  
HEX HEAD BOLT  
COVER, REAR FRAME  
ACOUSTIC SHEET  
PANEL  
ACOUSTIC SHEET  
HEX NUT  
12  
14  
1
1
2
12  
1
4
HEX HEAD BOLT  
DOOR, REAR FRAME  
DOOR, REAR FRAME  
WINDOW PLATE  
SELF- LOCKING U NUT  
DOOR HANDLE  
MACHINE SCREW  
HEX NUT  
4
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 79  
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ENCLOSURE ASSY. (CONTINUED)  
PAGE 80 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENCLOSURE ASSY. (CONTINUED)  
NO.  
33  
34  
35  
36  
37  
38  
39  
40  
40A  
41  
41A  
42  
43  
44  
45  
46  
47  
48  
48A  
49  
50  
51  
51A  
52  
53  
54  
55  
56  
56A  
57  
57A  
58  
58A  
59  
59A  
60  
60A  
61  
61A  
62  
62A  
63  
63A  
64  
65  
PART NO.  
PART NAME  
DOOR ROD  
DOOR ROD  
STAY  
HEX NUT  
STOPPER, DOOR  
STOPPER, DOOR  
HEX NUT  
HINGE  
WASHER  
HINGE  
WASHER  
HEX HEAD BOLT  
STOPPER  
MACHINE SCREW  
CAP  
MANUAL PAK  
HEX NUT  
QTY.  
1
1
4
8
1
1
4
2
2
2
2
6
2
2
4
1
4
1
1
1
4
1
1
1
41  
1
6
1
1
1
1
1
1
REMARKS  
C3444700004  
8195146304  
0845050704  
0207006000  
0805011304  
0805011204  
0207006000  
0845047104  
0845045004  
0845047204  
0845045004  
0019208020  
0601850097  
0025408025  
0845031504  
0600800320  
0207006000  
M5463100002  
M5493500004  
M3310600004  
0019208020  
C2464200502  
C2494500904  
M5423200103  
0019208020  
M5453200002  
0019208065  
M5453000203  
M5493400004  
M5453000303  
M5493400104  
M5453000803  
M5493409304  
M5453000903  
M549340904  
M5453300004  
M5493400204  
M5453300104  
M5493400304  
M5453300904  
M5493409504  
M5453300204  
M5493400404  
0207008000  
B9114000002  
ROOF PANEL  
ACOUSTIC SHEET  
COVER  
HEX HEAD BOLT  
ROOF PANEL  
ACOUSTIC SHEET  
COVER, FRONT FRAME  
HEX HEAD BOLT  
SPLASHER PANEL  
HEX HEAD BOLT  
SIDE PANEL  
ACOUSTIC SHEET  
SIDE PANEL  
ACOUSTIC SHEET  
SIDE PANEL  
ACOUSTIC SHEET  
SIDE PANEL  
ACOUSTIC SHEET  
DUCT  
ACOUSTIC SHEET  
DUCT  
ACOUSTIC SHEET  
DUCT  
ACOUSTIC SHEET  
DUCT  
ACOUSTIC SHEET  
HEX NUT  
DOOR HANDLE  
1
1
1
1
1
1
2
2
1
1
35  
4
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 81  
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ENCLOSURE ASSY. (CONTINUED)  
PAGE 82 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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ENCLOSURE ASSY. (CONTINUED)  
NO.  
66  
67  
67A  
68  
68A  
69  
69A  
70  
71  
72  
73  
74  
75  
76  
PART NO.  
PART NAME  
DOOR HANDLE  
MACHINE SCREW  
HEX NUT  
HINGE  
WASHER  
HINGE  
WASHER  
HEX HEAD BOLT  
STOPPER  
MACHINE SCREW  
CAP  
GUTTER  
GUTTER  
HEX HEAD BOLT  
QTY.  
3
28  
16  
5
5
6
6
25  
8
8
11  
2
2
4
REMARKS  
0825007362  
0021806016  
0030006000  
0845046904  
0845045004  
084504700  
0845045004  
0019208020  
0601850097  
0025408025  
0845031504  
M5463500004  
C2464500304  
0019208020  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 83  
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RUBBER SEALS ASSY.  
PAGE 84 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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RUBBER SEALS ASSY.  
NO.  
1
2
3
4
5
6
7
8
PART NO.  
PART NAME  
QTY.  
REMARKS  
0229201400  
0228901015  
0228901250  
0228901310  
0228900650  
0228900650  
0228900710  
0229201300  
0221200705  
0228801210  
0228100510  
0228100120  
0229200470  
0229201130  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
SEAL RUBBER  
4
4
3
3
4
1
1
1
2
2
4
4
2
1
9
10  
11  
12  
13  
14  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 85  
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NAMEPLATE AND DECALS ASSY.  
PAGE 86 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NAMEPLATE AND DECALS ASSY.  
NO.  
1-1  
1-2  
PART NO.  
C3550000703  
C9522100003  
PART NAME  
QTY.  
REMARKS  
DECAL : HANDLING PROCEDURES .........................1................. C3500 0070  
DECAL : CAUTION ......................................................2................. C9221 0000  
CONTROL BOX GROUP  
2-1  
2-2  
2-3  
2-4  
2-5  
2-6  
2-7  
2-8  
2-9  
0800520100  
0800520904  
0800520814  
0840624504  
0840624604  
0840624704  
0840624804  
B9531100604  
C0551000903  
PLATE : ON - OFF........................................................1................. AT-202  
PLATE : AMMETER CHANGE- OVER SWITCH..........1................. N-2438  
PLATE : VOLTMETER CHANGE- OVER SWITCH ......1................. N-2439  
DECAL : CIRCUIT BREAKER .....................................1................. S-3031  
DECAL : PANEL LIGHT SWITCH................................1................. S-3032  
DECAL : PILOT LAMP .................................................1................. S-3033  
DECAL : VOLTAGE REGULATOR................................1................. S-3034  
DECAL : WARNING ELECTRIC SHOCK HAZARD.....1................. B9311 0060  
DECAL : SETTING FOR OUTPUT VOLTAGE..............1................. C0510 0090  
DECAL : SAFETY INSTRUCTIONS ............................1................. C2510 0000  
DECAL : WHISPERWATT 300 .....................................1................. M5601 0090A  
DECAL : HIGH IDLE SPEED.......................................1................. C9024 0000  
DECAL : DIAGNOSTIC BUTTON ................................1................. C9200 2770  
DECAL : WARNING DIAGNOSTIC LAMP...................1................. C9200 2860  
DECAL : SHUTDOWN DIAGNOSTIC LAMP...............1................. C9200 2870  
DECAL : LOW IDLE SPEED / DIAG. CODE SW..........1................. C9200 2880  
DECAL : DIAGNOSTIC SWITCH.................................1................. C9210 0750  
DECAL : RESET ..........................................................1................. Z0100 0150  
2-10 C2551000004  
2-11 M5560100903  
2-12 C9502400004  
2-13 C9520027704  
2-14 C9520028604  
2-15 C9520028704  
2-16 C9520028804  
2-17 C9521007504  
2-18 Z0110001504  
ENGINE & RADIATOR GROUP  
3-1  
3-2  
3-3  
3-4  
6360610304  
6360620204  
B9504000404  
B9504100104  
DECAL : WATER..........................................................1................. S-1880  
DECAL : OIL DRAIN PLUG .........................................1................. S-1885  
DECAL : MOVING PARTS ...........................................2................. B9040 0040  
DECAL : WARNING HOT COOLANT ..........................1................. B9041 0010  
ENGINE OPERATING PANEL GROUP  
4-1  
4-2  
4-3  
C0551000504  
C3550000404  
M5550000503  
DECAL : BATTERY SWITCH.......................................1................. C0510 0050  
DECAL : ALARM LAMP...............................................1................. C3500 0040  
DECAL : OPERATING PANEL .....................................1................. M5500 0050  
OUTPUT TERMINAL GROUP  
5-1  
5-2  
5-3  
5-4  
5-5  
5-6  
5-7  
5-8  
0840614104  
0840619904  
9039209064  
B9511100304  
B9511100404  
B9531100504  
C0551000404  
C1551000803  
DECAL : GROUND ......................................................1................. S-2635  
DECAL : DANGER HIGH VOLTAGE ............................1................. S-2731  
DECAL : START CONTACT .........................................1................. S-4468  
DECAL : WARNING .....................................................1................. B9111 0030  
DECAL : WARNING ELECTRIC SHOCK HAZARD.....1................. B9111 0040  
DECAL : WARNING ELECTRIC SHOCK HAZARD.....1................. B9311 0050  
DECAL : 3- PHASE OUTPUT TERMINAL...................1................. C0510 0040  
DECAL : RECEPTACLE & CIRCUIT BREAKER..........1................. C1510 0080  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 87  
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NAMEPLATE AND DECALS ASSY. (CONTINUED)  
PAGE 88 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NAMEPLATE AND DECALS ASSY. (CONTINUED)  
NO.  
PART NO.  
PART NAME  
BATTERY GROUP  
QTY.  
REMARKS  
6-1  
6-2  
6-3  
0800689404  
0800689504  
C9505300004  
DECAL : + ............................................................... 1...................... S-2090  
DECAL : -................................................................ 1...................... S-2091  
DECAL : CAUTION ................................................. 1...................... C9053 0000  
MUFFLER GROUP  
DECAL : DANGER........................................................................... A9040 0001  
DECAL : WARNING ENGINE EXHAUST................ 1...................... B9042 0000  
7-1  
7-2  
A9504000014  
B9504200004  
FUEL TANK GROUP  
8-1  
8-2  
8-3  
1320620904  
6360620004  
B9504500004  
DECAL : DIESEL FUEL .......................................... 1...................... S-1756  
DECAL : FUEL DRAIN PLUG................................. 1...................... S-1883  
DECAL : WARNING DIESEL FUEL ........................ 1...................... B9045 0000  
BONNET GROUP  
9-1  
9-2  
9-3  
9-4  
9-5  
9-6  
1320610603  
1320621504  
0840625902  
B9504000304  
B9531100604  
0600500090  
DECAL : WATER - OIL........................................... 1...................... S-1760  
DECAL : SUPPORT HOOK .................................... 2...................... S-2257  
DECAL : MQ ........................................................... 1...................... S-3057  
DECAL : CAUTION HOT PARTS ............................ 1...................... B9040 0030  
DECAL : WARNING ELECTRIC SHOCK HAZARD 1...................... B9311 0060  
EMBLEM................................................................. 2  
9-6 A 0021106016  
MACHINE SCREW ................................................. 4  
STRIPE................................................................... 1  
STRIPE................................................................... 1  
STRIPE................................................................... 1  
9-7  
9-8  
9-9  
M5560101503  
M5560101303  
M5560101103  
9-10 M5560101004  
9-11 M5560101403  
9-12 M5560101203  
9-13 C9504000304  
9-14 M9504200004  
STRIPE................................................................... 4  
STRIPE................................................................... 1  
STRIPE................................................................... 1  
DECAL : CAUTION ................................................. 1...................... C9040 0030  
DECAL : WARNING START FIRES ........................ 1...................... M9042 0000  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 89  
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TERMS AND CONDITIONS OF SALE — PARTS  
5. Parts must be in new and resalable  
condition, in the original Multiquip  
package (if any), and with Multiquip part  
numbers clearly marked.  
Multiquip reserves the right to quote and  
sell direct to Government agencies, and to  
Original Equipment Manufacturer accounts  
who use our products as integral parts of their  
own products.  
PAYMENT TERMS  
Terms of payment for parts are net 30 days.  
FREIGHT POLICY  
6. The following items are not returnable:  
All parts orders will be shipped collect or  
prepaid with the charges added to the invoice.  
All shipments are F.O.B. point of origin.  
Multiquip’s responsibility ceases when a  
signed manifest has been obtained from the  
carrier, and any claim for shortage or damage  
must be settled between the consignee and  
the carrier.  
a. Obsolete parts. (If an item is in the  
price book and shows as being  
replaced by another item, it is  
obsolete.)  
SPECIAL EXPEDITING SERVICE  
A $35.00 surcharge will be added to the  
invoice for special handling including bus  
shipments, insured parcel post or in cases  
where Multiquip must personally deliver the  
parts to the carrier.  
b. Any parts with a limited shelf life  
(such as gaskets, seals, “O” rings,  
and other rubber parts) that were  
purchased more than six months  
prior to the return date.  
LIMITATIONS OF SELLER’S LIABILITY  
MINIMUM ORDER  
Multiquip shall not be liable hereunder for  
damages in excess of the purchase price of  
the item with respect to which damages are  
claimed, and in no event shall Multiquip be  
liable for loss of profit or good will or for any  
other special, consequential or incidental  
damages.  
The minimum charge for orders from Multiquip  
is $15.00 net. Customers will be asked for  
instructions regarding handling of orders not  
meeting this requirement.  
c. Any line item with an extended  
dealer net price of less than  
$5.00.  
d. Special order items.  
RETURNED GOODS POLICY  
e. Electrical components.  
f. Paint, chemicals, and lubricants.  
g. Decals and paper products.  
h. Items purchased in kits.  
Return shipments will be accepted and  
credit will be allowed, subject to the following  
provisions:  
LIMITATION OF WARRANTIES  
No warranties, express or implied, are  
made in connection with the sale of parts or  
trade accessories nor as to any engine not  
manufactured by Multiquip. Such warranties  
made in connection with the sale of new,  
complete units are made exclusively by a  
statement of warranty packaged with such  
units, and Multiquip neither assumes nor  
authorizes any person to assume for it  
any other obligation or liability whatever in  
connection with the sale of its products. Apart  
from such written statement of warranty,  
there are no warranties, express, implied or  
statutory, which extend beyond the description  
of the products on the face hereof.  
1. A Returned Material Authorization  
must be approved by Multiquip prior to  
shipment.  
7. The sender will be notified of any material  
received that is not acceptable.  
8. Such material will be held for five  
working days from notification, pending  
instructions. If a reply is not received  
within five days, the material will be  
returned to the sender at his expense.  
2. To obtain a Return Material Authorization,  
a list must be provided to Multiquip  
Parts Sales that defines item numbers,  
quantities, and descriptions of the items  
to be returned.  
9. Credit on returned parts will be issued  
at dealer net price at time of the original  
purchase, less a 15% restocking  
charge.  
a. The parts numbers and descriptions  
must match the current parts price  
list.  
b. The list must be typed or computer  
generated.  
10. In cases where an item is accepted, for  
which the original purchase document  
can not be determined, the price will be  
based on the list price that was effective  
twelve months prior to the RMA date.  
c. The list must state the reason(s)  
for the return.  
Effective: February 22, 2006  
d. The list must reference the sales  
order(s) or invoice(s) under  
which the items were originally  
purchased.  
11. Credit issued will be applied to future  
purchases only.  
PRICING AND REBATES  
e. The list must include the name  
and phone number of the person  
requesting the RMA.  
Prices are subject to change without prior  
notice. Price changes are effective on a  
specific date and all orders received on or  
after that date will be billed at the revised price.  
Rebates for price declines and added charges  
for price increases will not be made for stock  
on hand at the time of any price change.  
3. AcopyoftheReturnMaterialAuthorization  
must accompany the return shipment.  
4. Freight is at the sender’s expense. All  
parts must be returned freight prepaid to  
Multiquip’s designated receiving point.  
PAGE 90 — DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09)  
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NOTES  
DCA300SSC GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (06/25/09) — PAGE 91  
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OPERATION AND PARTS MANUAL  
HERE’S HOW TO GET HELP  
PLEASE HAVE THE MODEL AND SERIAL  
NUMBER ON-HAND WHEN CALLING  
MQ Power  
1800 Water Ridge Rd. Tel. (800) 883-2551  
Suite 500/600  
Lewisville, TX 75057  
Fax (972) 315-1847  
Contact: [email protected]  
MQ Parts Department  
800-427-1244  
310-537-3700  
Fax: 800-672-7877  
Fax: 310-637-3284  
Service/Tech Support/Warranty  
800-835-2551 Fax: 310-638-8046  
© COPYRIGHT 2009, MULTIQUIP INC.  
MQ Power and the MQ Power logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the  
property of their respective owners and used with permission.  
This manual MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.  
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in  
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published  
in this publication at any time without notice and without incurring any obligations.  
Manufactured for  
Multiquip Inc.  
by  
Your Local Dealer is:  
DENYO CO., LTD, JAPAN  
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