Rubber Seal Assembly .............................................. 92-93
Terms and Condition of Sale — Parts ............................ 94
Specification and part
NOTE
number are subject to
change without notice.
WINGSWINGS
WINGS
WINGSWINGS
PAGE 4 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
PARTS ORDERING PROCEDURES
When ordering parts,
please supply the following information:
❒❒
❒Dealer account number
❒❒
❒❒
❒Dealer name and address
❒❒
❒❒
❒Shipping address (if different than billing address)
❒❒
❒❒
❒Return fax number
❒❒
❒❒
❒Applicable model number
❒❒
❒❒
❒Quantity, part number and description of each part
❒❒
❒❒
❒Specify preferred method of shipment:
❒❒
✓FedEx or UPS Ground
✓FedEx or UPS Second Day or Third Day
✓FedEx or UPS Next Day
✓Federal Express Priority One
✓DHL
✓Truck
Note: Unless otherwise indicated by customer, all
orders are treated as “Standard Orders”, and will
ship within 24 hours. We will make every effort to
ship “Air Shipments” the same day that the order is
received, if prior to 2PM west coast time. “Stock
Orders” must be so noted on fax or web forms.
Here’s how to get help...
Please have the model and serial number on
hand when calling.
Parts Department
800-427-1244Fax: 800-672-7877
310-537-3700Fax: 310-637-3284
Mayco Parts
800-306-2926Fax: 800-672-7877
310-537-3700Fax: 310-637-3284
Service Department
800-478-1244Fax: 310-537-4259
310-537-3700
MQ Power Service Department
800-835-2551Fax: 310-638-8046
310-537-3700
Warranty Department
800-421-1244, Ext. 279Fax: 310-537-1173
310-537-3700, Ext. 279
Multiquip’s Main Phone Numbers
800-421-1244Fax: 310-537-3927
310-537-3700
Place Your Parts Order Via Web or Fax
For Even More Savings!
Extra Discounts!
All parts orders which include complete part numbers
and are received by our automated web parts order
system, or by fax qualify for the following extra
discounts:
OrderedStandardStock orders
viaorders($750 list and above)
Fax3%10%
Web5%10%
Special freight allowances
when you order 10 or more
line items via Web or Fax!**
FedEx Ground Service
No other allowances on freight shipped by any other
carrier.
NOTE: DISCOUNTS ARE SUBJECT TO CHANGE
at no charge for freight
MULTIQUIP INC.
18910 WILMINGTON AVENUE
POST OFFICE BOX 6254
CARSON, CALIFORNIA 90749
310-537-3700 • 800-421-1244
FAX: 310-537-3927
E-MAIL: mq@multiquip.com
WWW: multiquip.com
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 5
PAGE 6 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — DIMENSIONS
Figure 1. Dimensions
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 7
DCA-125SSJU SERIES — SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
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.
This Owner's Manual has been
NOTE
Before using this GENERATOR, ensure that the operating
individual has read and understands all instructions in this
manual.
developed to provide complete
instructions for the safe and
efficient operation of the MQ Power
Model DCA125SSJU Series
WHISPERWATT™ GENERATOR.
HAZARD SYMBOLS
SAFETY MESSAGE ALERT SYMBOLS
The three (3) 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 three words: DANGER,
WARNING, or CAUTION.
Lethal Exhaust Gases
Engine exhaust gases contain poisonous
carbon monoxide. This gas is colorless and
odorless, and can cause death if inhaled.
NEVER operate this equipment in a confined
area or enclosed structure that does not
provide ample free flow air.
Explosive Fuel
Diesel fuel is extremely flammable, and its
vapors can cause an explosion if ignited. DONOT start the engine near spilled fuel or
combustible fluids. DO NOT fill the fuel tank
while the engine is running or hot. DO NOT
overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or
sparks from the ignition system. Store fuel in
approved containers, in well-ventilated areas
and away from sparks and flames. NEVER
use fuel as a cleaning agent.
DANGER: You WILL be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
WARNING: You CAN be KILLED or
SERIOUSLY injured if you DO NOT follow
directions.
CAUTION: You CAN be injured if you
DO NOT follow directions.
Potential hazards associated with trowel operation will be
referenced with "
this manual, and will be referenced in conjunction with Safety
"
Message Alert Symbols
Hazard Symbols
".
" which appear throughout
Burn Hazards
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operations. NEVER operate the engine with
heat shields or heat guards removed.
Rotating Parts
NEVER operate equipment with covers, or
guards removed. Keep
and
clothing
prevent injury.
fingers, hands, hair
away from all moving parts to
PAGE 8 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — SAFETY MESSAGE ALERT SYMBOLS
Accidental Starting
ALWAYS place the engine ON/OFF
switch in the OFF position, when the
trowel is not in use.
Over Speed Conditions
NEVER tamper with the factory settings of the
engine governor or settings. Personal injury
and damage to the engine or equipment can
result if operating in speed ranges above
maximum allowable.
This
NOTE
the surrounding environment could
be damaged if you do not follow
instructions.
generator
, other property, or
Respiratory Hazard
ALWAYS wear approved respiratory protection.
Sight and Hearing hazard
ALWAYS wear approved eye and hearing
protection.
Equipment Damage Messages
Other important messages are provided throughout this manual
to help prevent damage to your trowel, other property, or the
surrounding environment.
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 9
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Failure to follow instructions in this manual may
lead to serious injury or even death! This
equipment is to be operated by trained and
qualified personnel only! This equipment is for
industrial use only.
DCA-125SSJU SERIES — RULES FOR SAFE OPERATION
■
:
NEVER touch the hot exhaust
manifold, muffler or cylinder. Allow
these parts to cool before servicing
engine or generator.
The following safety guidelines should always be used when
operating the DCA-125SSJU Series Generator:
GENERAL SAFETY
■
DO NOT operate or service this equipment
before reading this entire manual.
■
High Temperatures – Allow the engine to cool before
performing service and maintenance functions. Contact
with
hot!
can cause serious
burns.
■
The engine of this
generator requires an
adequate free flow of
■
This equipment should not be operated by persons under 18
years of age.
■
NEVER operate this equipment without proper
protective clothing, shatterproof glasses, steeltoed boots and other protective devices required
by the job.
cooling air.
operate the generator
in any enclosed or
narrow area where free
flow of the air is restricted. If the air flow is restricted it will
cause serious damage to the generator or engine and
may cause injury to people. The generator engine gives
off DEADLY carbon monoxide gas.
■
ALWAYS make sure generator is properly grounded.
■
■
NEVER operate this equipment when not feeling
well due to fatigue, illness or taking medicine.
NEVER use gas piping as an electrical ground.
■
DO NOT place hands or fingers inside generator engine
compartment when engine is running.
components
NEVER
■
■
NEVER operate this equipment under the
influence or drugs or alcohol.
■
NEVER use accessories or attachments, which are not
recommended by MQ Power for this equipment. Damage to
the equipment and/or injury to user may result.
■
Manufacture does not assume responsibility for any accident
due to equipment modifications.
■
Whenever necessary, replace nameplate, operation and safety
decals when they become difficult read.
■
ALWAYS check the machine for loosened threads or bolts
before starting.
■
NEVER operate the generator in an explosive atmosphere or
near combustible materials. An explosion or fire could result
causing severe
PAGE 10 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
bodily harm or even death.
ALWAYS make sure generator installation is accordance with
national and local electrical codes
■
ALWAYS have a qualified electrician perform the generator
wiring installation.
■
NEVER power cables or cords
■
NEVER
is being transfer to a load.
■
NEVER use a defective or frayed power cable. Check the
cable for cuts in the insulation.
■
NEVER use a extension cord that is frayed or damaged where
the insulation has been cut.
■
ALWAYS make certain that proper extension cord has been
selected for the job See Table 5.
■
The electrical voltage required to operate the generator can
cause severe injury or even death through physical contact
with live circuits.
performing maintenance on the generator.
stand in water
while AC power from the generator
Turn all circuit breakers OFF before
.
lay in wate
r.
DCA-125SSJU SERIES — RULES FOR SAFE OPERATION
.
■
ALWAYS make sure that electrical circuits are properly
grounded
codes before operating generator. Severe
electrocution can result from operating an ungrounded
generator.
■
ALWAYS be sure the operator is familiar with proper safety
precautions and operations techniques before using generator.
■
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.
■
ALWAYS read, understand, and follow
procedures in Operator’s Manual before
attempting to operate equipment.
DANGERDANGER
DANGER
DANGERDANGER
securely connected to the
generator’s output terminals,
insufficient tightening of the
terminal connections may cause
damage to the generator and
electrical shock.
DANGERDANGER
DANGER
DANGERDANGER
DANGERDANGER
DANGER
DANGERDANGER
per the
National Electrical Code
(NEC) and local
injury
or
death!
:
Never use damaged or worn cables when
connecting equipment to the generator.
Make sure power
connecting
cables are
WET
HANDS
:
NEVER grab or
touch a live
power cord with
wet hands , the
possibility exists
of electrical shock, electrocution, and even
death!
POWER
CORD
(POWER ON)
:
DANGERDANGER
DANGER
DANGERDANGER
by
■
Backfeed to a utility system can cause
property damage. DO NOT connect to any building's electrical
system except through an approved device or after building
main switch is opened. ALWAYS have a licensed electrician
perform the installation
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Radiator
1.Radiator Cap - Removing the radiator cap while the engine
2.Coolant Drain Plug - Removing the coolant drain plug
3.Engine Oil Drain Plug - Removing the engine oil drain
Maintenance Safety
■
:
electrocution
and or
:
DO NOT touch or open any of the below
mentioned components while the
generator is running. Always allow
sufficient time for the engine and generator
to cool before performing maintenance.
is hot will result in high pressurized, boiling water to gush
out of the radiator, causing severe scalding to any persons
in the general area of the generator.
while the engine is hot will result in hot coolant to gush out
of the coolant drain plug, therefore causing severe scalding
to any persons in the general area of the generator.
plug while the engine is hot will result in hot oil to gush out
of the oil drain plug, therefore causing severe scalding to
any persons in the general area of the generator.
NEVER lubricate components or attempt service on a running
machine.
■
ALWAYS allow the machine a proper
amount of time to cool before servicing.
■
NEVER touch output terminals during operation. This is
extremely dangerous. ALWAYS stop the machine and
place the circuit breaker in the “OFF” position when contact
with the output terminals is required. There exists the
possibility of
which can cause severe bodily harm or even death
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 11
electrocution, electrical shock or burn,
■
Keep the machinery in proper running condition.
■
Fix damage to the machine immediately and always replace
broken parts.
!
DCA-125SSJU SERIES — RULES FOR SAFE OPERATION
■
NEVER Run engine without air filter. Severe engine
damage may occur.
■
ALWAYS service air cleaner frequently to prevent engine
malfunction.
■
ALWAYS disconnect the
performing service on the generator.
■
ALWAYS be sure the operator is familiar with proper safety
precautions when operating the generator set.
■
ALWAYS store equipment properly when not in use.
■
DO NOT leave the generator running in the
unattended.
■
DO NOT allow unauthorized people to operate this
equipment.
■
ALWAYS read, understand, and follow procedures in
Operator’s Manual before attempting to operate equipment.
■
Refer to the
technical questions or information.
DANGER:DANGER:
DANGER:
DANGER:DANGER:
John Deere Engine Manual
negative battery terminal
manual mode
for engine
before
Battery
The battery contains acids that can cause injury to the eyes
and skin. To avoid eye irritation,
Use well insulated gloves when picking up the battery. Use
the following guidelines when handling the battery:
1.DO NOT drop the battery. There is the possibility of risk
that the battery may explode.
2.DO NOT expose the battery to
open flames, sparks, cigarettes
etc. The battery contains
combustible gases and liquids. If
these gases and liquids come in
contact with a flame or spark, an
explosion could occur.
3.ALWAYS keep the battery charged. If the battery is not
charged a buildup of combustible gas will occur.
always
wear safety glasses.
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.
Generator Grounding
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
(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.
ALWAYS be sure to use the ground terminal (green wire)
when connecting a load to the UVWO output terminals.
National Electrical Code
4.ALWAYS keep battery charging and cables in good working
condition. Repair or replace all worn cables.
5.ALWAYS recharge the battery in an vented air
environment, to avoid risk of a dangerous concentration
of combustible gases.
6.In case the battery liquid (dilute sulfuric acid) comes in
contact with
immediately with plenty of water.
7.In case the battery liquid (dilute sulfuric acid) comes in
contact with your eyes, rinse eyes immediately with plenty
of water, then contact the nearest doctor or hospital, and
seek medical attention.
Transporting
■
ALWAYS shutdown engine before transporting.
■
Tighten both fuel tank caps securely.
■
If generator is mounted on a trailer, make sure trailer
complies with all local and state safety transportation
laws. See next page “
basic towing techniques.
clothing or skin
Towing Safety Precautions
, rinse skin or clothing
” for
PAGE 12 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — RULES FOR SAFE OPERATION
Towing Safety Precautions
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
Conform to
(DOT)
towing generator.
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 in
good operating condition and both units are mechanically
sound.
The following list of suggestions should be used when towing
your generator:
■
Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer "gross vehicle
weight rating" (GVWR) of 6,000 lbs.
■
ALWAYS inspect the hitch and coupling for wear. NEVER
tow a trailer with defective hitches, couplings, chains
etc.
Department of Transportation
Safety Towing Regulations
before
■
Avoid sharp turns.
■
Trailer should be adjusted to a level position at all times
when towing.
■
Raise and lock trailer wheel stand in up position when
transporting.
■
DOT Requirements include the following:
z
z
Emergencies
■
ALWAYS know the location of the nearest
■
ALWAYS know the location of the nearest and
Connect and test electric brake operation.
Secure portable power cables in cable tray with
tie wraps.
fire extinguisher
first aid kit
.
.
■
Check the tire air pressure on both towing vehicle and
trailer.
Also check the tire tread wear on both vehicles.
■
ALWAYS make sure the trailer is equipped with a "Safety
Chain".
■
ALWAYS attach trailer’s safety chains to towing vehicle
properly.
■
ALWAYS make sure the vehicle and trailer directional,
backup, brake, and trailer lights are connected and
working properly.
■
The maximum speed for highway towing is 45 MPH
unless posted otherwise. Recommended off-road towing
is not to exceed 10 MPH or less depending on type of
terrain.
■
Place
while parked.
■
Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.
■
Avoid sudden stops and starts. This can cause skidding,
or jack-knifing. Smooth, gradual starts and stops will
improve towing.
Trailer tires should be inflated to 50 psi cold.
chock blocks
underneath wheel to prevent rolling,
■
In emergencies
nearest phone or
Also know the phone numbers of the nearest
ambulance, doctor
information will be invaluable in the case of an
emergency.
always
know the location of the
keep a phone on the job site
and
fire department
.
. This
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 13
DCA-125SSJU SERIES — INSTALLATION
Figure 2. Typical Generator Grounding Application
PAGE 14 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — INSTALLATION
Outdoor Installation
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.
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.
Foreign materials such as dust, sand, lint and abrasive
materials have a tendency to cause excessive wear to
engine and alternator parts.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
:
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.
Generator Grounding
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.
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.
a.Copper - 10 AWG (5.3 mm2) or larger.
b.Aluminum - 8 AWG (8.4 mm2) or larger.
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 aminimum of 8 ft. into the ground.
Indoor Installation
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.
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.
NOTE
When connecting the generator to
any buildings electrical system
ALWAYS consult with a licensed
electrician.
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 15
DCA-125SSJU SERIES — TOWING SAFTEY PRECAUTIONS
■
Towing Safety Precautions
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
To reduce the possibility of an accident while transporting
the generator on public roads, always make sure the trailer
(Figure 4) that supports the generator and the towing vehicle
are in good operating condition and both units are
mechanically sound.
The following list of suggestions should be used when towing
your generator:
■
Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer "gross vehicle
weight rating" (GVWR).
■
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. Also check the tire tread wear on both vehicles.
■
ALWAYS make sure the trailer is equipped with a "Safety
Chain".
:
Check with your local county or state safety
towing regulations before towing your
generator.
ALWAYS attach trailer’s safety chain to bumper of towing
vehicle.
■
ALWAYS make sure the vehicle and trailer directional,
backup, brake, and trailer lights are connected and
working properly.
■
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.
■
Place
rolling, while parked.
■
Place
prevent tipping, while parked.
■
Use the trailer’s hand winch to adjust the height of the
trailer, then insert locking pin to lock wheel stand in place,
while parked.
■
Avoid sudden stops and starts. This can cause skidding,
or jackknifing. Smooth, gradual starts and stops will
improve gas milage.
■
Avoid sharp turns to prevent rolling.
■
Remove wheel stand when transporting.
■
DO NOT transport generator with fuel in tank.
chocked blocks
support blocks
underneath wheel to prevent
underneath the trailer’s bumper to
Figure 3. Generator with Trailer
PAGE 16 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — TRAILER SPECIFICATIONS
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Explanation of Chart:
This section is to provide the user with trailer service and
maintenance information. The service and maintenance
guidelines referenced in this section apply a wide range of
trailers. Remember periodic inspection of the trailer will ensure safe towing of the equipment and will prevent damage
to the equipment and personal injury.
It is the purpose of this section to cover the major maintenance components of the trailer. The following trailer components will be discussed in this section:
Brakes
Tires
Lug Nut Torquing
Suspension
Electrical
Brake Troubleshooting Tables
Use the following definitions when reading Table 2.
:
ALWAYS make sure the trailer is in good
operating condition. Check the tires for
proper inflation and wear. Also check the
wheel lug nuts for proper tightness.
5. Frame Length - Measurement is from fender to fender
6. Jack Stand - Trailer support device with maximum pound
requirement from the tongue of the trailer.
7. Coupler - Type of hitch used on the trailer for towing.
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.
9. Tire Ply - The tire ply (layers) number is rated in letters;
2-ply,4-ply,6-ply, etc.
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.
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 17 and Figure 67for lug nut tightening and
sequence.
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.
14. Suspension - Protects the trailer chassis from shocks
transmitted through the wheels. Types of suspension
used are leaf, Q-flex, and air ride.
1. Fuel Cell - Provides an adequate amount of fuel for the
equipment in use. Fuel cells must be empty when transporting equipment.
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).
4. Frame Length - Measurement is from the ball hitch to
the rear bumper (reflector).
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 17
15. Electrical - Electrical connectors (looms) are provided
with the trailer so the brake lights and turn signals can
be connected to the towing vehicle.
16. Application - Indicates which units can be employed
on a particular trailer.
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 19
DCA-125SSJU SERIES — GENERATOR DECALS
The DCA-125SSJU Series generator is equipped with a number of safety decals. These decals are provided for operator
safety and maintenance information. The illustration below and on the preceding page show the decals as they appear on
the machine. Should any of these decals become unreadable, replacements can be obtained from your dealer.
PAGE 20 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — GENERATOR DECALS
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 21
DCA-125SSJU SERIES — GENERAL INFORMATION
DCA-125SSJU Series Familiarization
Generator
The MQ Power DCA-125SSJU Series is a 100 kW
(Figure 4) 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.
Engine Operating Panel
The “Engine Operating Panel” is provided with the following:
z
Tachometer
z
Water Temperature Gauge
z
Oil Pressure Gauge
z
Charging Ammeter Gauge
z
Engine Throttle Handle (Up to S/N 77500507)
z
Fuel Level Gauge
z
Engine Speed Switch (S/N 7500508~)
z
Cold Starting Button
z
Panel Light
z
Panel Light Switch
z
Ignition/Preheat Switch ( Up to S/N 77500507)
z
Auto ON/OFF Engine Controller (S/N 7500508~)
Generator Control Panel
The “Generator Control Panel” is provided with the following:
z
Output Voltage Adjustment Knob
z
Frequency Meter (Hz)
z
AC Ammeter (Amps)
z
AC Voltmeter (Volts)
z
Ammeter Change-Over Switch
z
Voltmeter Change-Over Switch
z
Voltage Regulator
z
Over-Current Relay
Output Terminal Panel
The “Output Terminal Panel” is provided with the following:
z
Three 250 VAC output receptacles (CS-6369), 50 amps
z
Three auxiliary circuit breakers, 250V @50 amps
z
Two 125 VAC output receptacles, (GFCI), 20 amps
z
Two GFCI circuit breakers, 120V@ 20amps
z
Five output terminal lugs (3Ø power)
Control Box
The “Control Box” is provided with the following:
z
3-Pole, 300 amp Main Circuit Breaker
z
Automatic Voltage Regulator
z
Current Transformer
z
Emergency Relay
generator
Open Delta Excitation System
The DCA-125SSJU Series Generator is equipped with the state
of the art "
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.
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 ot
provide higher excitation to the exciter section and thus better
voltage response during the application of heavy loads.
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 "
according the demands of the required load.
Engine
The DCA-125SSJU Series Generator is powered by a
4 cycle, water cooled, turbocharged
Model
6068TF250
meet every performance requirement for the generator. Reference
Table 1 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.
Mechanical Governor System
The mechanical governor system control the RPM of the
engine. When the engine demands increase or decrease, the
mechanical governor system regulates the frequency variation to ±.5%. The electronic governor option increases
frequency variation to ±0.25%.
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 5) as a guide for selecting proper
extension cable size.
Open-Delta
" excitation system. The open delta
Diesel
fixed ceiling
" and responds
John Deere
engine. This engine is designed to
PAGE 22 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — MAJOR COMPONENTS
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DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 23
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DCA-125SSJU SERIES — GENERATOR CONTROL PANEL
Figure 5. Generator Control Panel
The definitions below describe the controls and functions of
the DCA-125SSJU Series "
(Figure 5).
1.Main Circuit Breaker – This three-pole, 300 amp main
breaker is provided to protect the UVWO output
terminals from overload.
2.AC Ammeter – Indicates the amount of current the
load is drawing from the generator per leg selected by
the ammeter phase-selector switch.
3.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.
4.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.
5.Voltage Regulator Control – Allows ±15% manual
adjustment of the generator’s output voltage.
6.Frequency Meter – Indicates the output frequency in
hertz (Hz). Normally 60 Hz ±1 Hz .
7.AC Voltmeter – Indicates the output voltage present
at the UVWO terminals.
PAGE 24 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
Generator Control Panel
Located behind the generator control panel is the
Control Box
"
electronic components required to make the genertator
function.
The “Control Box” is equipped with the following major
components:
z
Over-Current Relay
z
Voltage Rectifer
z
Starter Relay
z
Engine Controller (Computer Controlled)
z
Current Transformer
z
Voltage Selector Switch
NOTE
To restore power to the UWVO output terminals, press the
reset
button on the overcurrent relay and place the
circuit breaker in the
. This box contains some of the necessary
Remember the
relay
monitors the current
flowing from the UWVO output
terminals to the load.
In the event of a short circuit or
over current condition, it will
automatically trip the main 250
amp breaker.
closed
position (ON).
Generator
overcurrent
main
DCA-125SSJU SERIES — ENGINE OPERATING PANEL
Figure 6. Engine Operating Panel Up To
The definitions below describe the controls and functions of
the DCA-125SSJU Series "
(Figure 6), up to S/N 7500507.
1.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.
2.Panel Light Switch – When activated will turn on control
panel light.
3.Oil Pressure Gauge – During normal operation this
gauge be should read in the “GREEN” zone. When
starting the generator the oil pressure may read a little
bit higher, but after the engine warms up the oil pressure
should return to the green zone.
4.Water Temperature Gauge – During normal operation
this gauge be should read in the “GREEN” zone.
5.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.
Engine Operating Panel
S/N 7500507
6.Fuel Gauge - Indicates amount of diesel fuel available.
"
7.Tachometer – Indicates engine speed in RPM’s for 60
8.Engine Speed Throttle- This lever controls the speed
9.Ignition Switch – Turns the engine on, off or to preheat
10. Cold Starting Button – Used to warm the engine glow
11. Water Temperature Warning Light - Indicates if the
12. Oil Pressure Warning Light - This will indicate if the
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.
of the engine (low or high).
the engine.
plugs in cold weather conditions. Press and hold the
engine cold starting button until the button illuminates.
coolant is low. This warning will shut off the engine.
oil pressure is too low or high. This warning will shut off
the engine.
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 25
DCA-125SSJU SERIES — ENGINE OPERATING PANEL
Figure 7. Engine Operating Panel From
PAGE 26 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
S/N 7500508
DCA-125SSJU SERIES — ENGINE OPERATING PANEL
The definitions below describe the controls and functions of
the DCA-125SSJU2 "
from S/N 7500508 ~.
1.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.
2.Panel Light Switch – When activated will turn on control
panel light.
3.Oil Pressure Gauge – During normal operation this
gauge be should read between 42 to 71 psi. When
starting the generator the oil pressure mar read a little
bit higher, but after the engine warms up the oil pressure
should return to the green zone.
4.Water Temperature Gauge – During normal operation
this gauge be should read between 165
5.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.
6.Fuel Gauge - Indicates amount of diesel fuel available.
7.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.
8.Engine Speed Switch - This switch controls the speed
of the engine (low or high).
9.Cold Starting Button – Used to
warm the engine glow plugs in cold
weather conditions. Press and hold
the engine cold starting button until
the button illuminates.
10. Auto On/Off Engine
Controller – 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.
Any
major
controller to shutdown the
generator.
Engine Operating Panel
fault will cause the
" (Figure 7)
o
and 203oF.
During
engine for 10 seconds before disengaging. 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, the controller will shutdown the engine by
initializing the "
Also the engine controller will shutdown the generator in the
event of low oil pressure, high coolant temperature, low
coolant level, and loss of magnetic pickup. These conditions
can be observed by monitoring the LED status indicators on
the front of the controller module.
A.Off/Manual/Auto Switch – This switch controls the
B.Low Oil Pressure – Indicates the engine pressure
C.High Coolant Temperature – Indicates the engine
D.Overcrank Shutdown – Indicates the unit has
E.Overspeed Shutdown – Indicates the engine is
F. Engine Running – Indicates that engine is running
cranking cycle
running of the generator. If this switch is left in the "OFF"
position, the generator will not run. When this switch is
set to the
immediately.
If the generator is to be connected to a building's AC
power source via a transfer switch (isolation), place
the switch in the
generator will monitor the AC line output from the
building's power source.
has fallen below 15 psi. The oil pressure is detected
using variable resistive values from the oil pressure
sending unit. This is considered a
temperature has exceeded 215°F. The engine
temperature is detected using variable resistive values
from the temperature sending unit. This is considered
a
major
attempted to start a pre- programmed number of times,
and 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
fault.
running at an unsafe speed. This is considered a
fault.
at a safe operating speed.
, The MPEC will attempt to crank the
Over Speed Protection
manual
position, the generator will start
auto
position. In this position the
" mode.
major
fault.
fault.
major
major
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 27
DCA-125SSJU SERIES — OUTPUT TERMINAL PANEL FAMILIARIZATION
Output Terminal Familiarization
The “
Output Terminal Panel
the following:
z
Three (3) 240V Output Receptacles, 50 amp
z
Three (3) Circuit Breakers 240V @50 amps
z
Two (2) 120V GFCI receptacles, 20 amp
z
Two (2) GFCI Circuit Breakers 120V@ 20 amps
z
One 300 Amp Main Circuit Breaker
z
Five (5) Output Terminal Lugs
” (Figure 8) is provided with
Output Terminal Panel
The
Output Terminal Panel
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.
NOTE
( Figure 8) shown below is
Terminal legs “O” and “Ground”
are considered
bonded grounds
.
Figure 8. Output Terminal Panel
PAGE 28 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — OUTPUT TERMINAL PANEL FAMILIARIZATION
120 VAC GFCI Receptacles
There are two 120 VAC, 20 amp GFCI (Duplex Nema 5-20R)
recepacles provided on the output terminal panel. These
receptacles can be accessed in any
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 UVWO terminals.
Pressing the
being tripped. Pressing the "
the center of the receptacle will check the GFCI function.
Both receptacles should be tested at least once a month.
reset
button resets the GFCI receptacle after
voltage selector switch
Test Button
" (See Figure 9) in
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
UVWO terminals.
Turn the
control panel to obtain the desired voltage. Turning the knob
clockwise will
clockwise will
Removing the Plastic Face Plate (UVWO Terminals)
The UVWO terminal lugs are protected by a plastic face
plate cover (Figure 12). Un-lock the locking latch, and lift the
terminal cover to gain access to the plastic face plate.
Remove the screws securing the face plate to the terminal
enclosure, then lift the plastic hinged face plate.
voltage regulator control knob
Figure 11. Voltage Regulator Control Knob
increase
the voltage, turning the knob counter-
decrease
(Figure 11) on the
the voltage.
After the load wires have been securely attached to the
UVWO terminals, reinstall the plastic face plate. Place the
Figure 9. G.F.C.I. Receptacle
Twist Lock Dual Voltage 120/240 VAC Receptacles
There are three 240 VAC, 50 amp auxiliary twist-lock
(CS-6369) recepacles (Figure 10) provided on the output
terminal panel.These receptacles can
when the voltage selector switch is placed in the
only
be accessed
single-
terminal cover in the down position and secure the locking
latch.
phase 240/120 position.
Figure 12. Plastic Face Plate (UVWO Terminals)
Figure 10. 240 VAC Twist-Lock
Auxiliary Receptacles
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 29
DCA-125SSJU SERIES — OUTPUT TERMINAL PANEL FAMILIARIZATION
Connecting Loads
Loads can be connected to the generator by the UVWO terminal
lugs or the convienience receptacles. (See Figure 13). Make
sure to read the operation manual before attempting to connect
a load to the generator.
To protect the UVWO output terminals from overload, a 3pole, 300 amp,
to switch
starting the engine.
main
circuit breaker is provided. Make sure
ALL
circuit breakers to the "OFF" position prior to
Over Current Relay
An
over current relay
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
rent relay must be pressed. The over current relay is located in the control box.
(Figure 14) is connected to the main
reset button
Figure 14. Over Current Relay
on the over cur-
Figure 13. Connecting Loads
Maximum Output
The entire load connected to the UVWO terminal lugs, duplex
and auxiliary receptacles must not exceed 110 kw in standby or
100 kw in prime output.
PAGE 30 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — LOAD APPLICATION
Single Phase Load
Always be sure to check the nameplate on the generator
and equipment to insure the wattage, amperage and
Three Phase Load
When calculating the power requirements for 3-phase power
use the following equation:
frequency requirements are satisfactorily supplied by the
generator for operating the equipment.
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
NOTE
starting system of the equipment.
If wattage is not given on the equipment's
NOTE
The power factor of this generator is 0.8. See Table 4 below
when connecting loads.
name plate, approximate wattage may be
determined by multiplying nameplate
voltage by the nameplate amperage.
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 5.
z
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.
z
When connecting a fluorescent or mercury lamp, a
capacity of up to the generating set’s rated output (kW)
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When connecting an electric drill or other power tools,
pay close attention to the required starting current
capacity.
When connecting ordinary power tools, a capacity of up to
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be used.
Motors and motor-driven
equipment draw much greater
current for starting than during
operation.
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DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 31
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Before connecting this generator to any
building’s electrical system, a
electrician
switch
must install an
isolation (transfer)
. Serious injury or death may result
licensed
without this transfer switch.
If 3Ø load (kVA) is not given on
the equipment nameplate,
approximate 3Ø load output
maybe determined by multiplying
voltage by amperage by 1.732.
DCA-125SSJU SERIES — GENERATOR OUTPUTS
Generator Output Voltages
A wide range of voltages are available to supply voltage for
many different applications. Voltages are selected by using
the
voltage selector
switch (Figure 15). To obtain some of
Generator Amperage
Tables 7 and 8 describe the generator’s current output capability for both 1Ø-phase and 3Ø phase applications.
the voltages as listed in Table 6 (see below) will require a
fine adjustment using the
knob
located on the control panel.
voltage regulator
(VR)
control
Voltage Selector Switch
The
voltage selector
switch (Figure 15) is located above
the UVWO Hard Wire Hook-up Panel. It has been provided
for ease of voltage selection.
Figure 15. Voltage Selector Switch
Voltage Selector Switch Locking Button
The voltage selector switch has a locking button to protect
the generator and load from being switched while the engine
is running. To lock the voltage selector switch,
PAGE 32 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
TLOV802TLOV022TLOV042TLOV614TLOV044TLOV084
TLOV021TLOV721TLOV931TLOV042TLOV452TLOV772
DCA-125SSJU SERIES — GENERATOR OUTPUTS/GAUGE READING
GFCI Receptacle Load Capability
The load capability of the GFCI receptacles is directly related to the voltage being supplied at either the UVWO terminals or the 3 twist lock auxilliary receptacles.
Tables 9 and 10 show what amount of current is available at
the GFCI receptacles when the UVWO terminals and twist
lock receptacles are in use. Be careful that your load does
not to exceed the available current capability at the receptacles.
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Figure 16. Voltage Selector Switch 240/139V Three Phase
Use this position for
3Ø, 208V/1Ø,120V
Position (for 3Ø, 208V, 120V voltage)
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Figure 17. AC Voltmeter
Change-Over Switch
How to Read the Output Terminal Gauge.
The gauge and selector switch on the control panel DO NOT
effect the generator output. They are provided to help observe how much power is being supplied, produced at the
UVWO terminals lugs.
When the Voltage selector switch is in the 3Ø,240/139V
position (See Figure 16), place the
Over Switch
(Figure 17) to the W-U position and the
AC Ammeter Change-Over Switch
AC Voltmeter Change-
(Figure 19) to the U or
Figure 19. AC Ammeter
Change-Over Switch
W position to read the output on the selected leg.
NOTE
Figure 18 AC Voltmeter
Gauge
(Volt reading on W-U Lug)
40
20
0
60
75
A
Figure 20. AC Ammeter
(Amp reading on U lug)
The
ammeter
gauges are only active when the
UVWO terminals are in use.
and
voltmeter
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 33
DCA-125SSJU SERIES — OUTPUT TERMINAL PANEL CONNECTIONS
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 position of the
the adjustment of the
Remember the voltage selector switch determines the
of the output voltage. The voltage regulator (VR) allows the
user to increase or decrease the selected voltage.
3Ø 240/139 UVWO Terminal Output Voltages
1.Place the voltage selector switch in the 3Ø 240/139
position as shown in Figure 21.
Voltage Regulator Control Knob
Voltage Selector Switch
and
range
3Ø 208V/1Ø120V UVWO Terminal Output Voltages
1.Place the voltage selector switch in the 3Ø 240/139
position as shown in Figure 24.
.
2.Connect the load wires to the UVWO terminals as shown
in Figure 25.
Use this position for
3Ø-208 or 1Ø120V.
Figure 24. Voltage Selector
Switch 3Ø-208V/1Ø-120V
Three-Phase Position
Figure 21. Voltage Selector Switch 240/139V
Three-Phase Position
2.Connect the load wires to the UVWO terminals as shown
in Figure 22.
3.Turn the voltage regulator knob (Figure 26) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
Figure 22. UVWO Terminal Lugs
240/139V Three Phase Connections
3.Turn the voltage regulator knob (Figure 23) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
NOTE
Figure 23. Voltage Regulator Knob (139V/240V)
Figure 25. UVWO Terminal Lugs
3Ø-208V/120V Connections
Figure 26. Voltage Regulator Knob (208V)
To achieve a 3Ø 208V
output the voltage selector
switch must be in the 3Ø240/139 position and the
voltage regulator must be
adjusted to 208V.
PAGE 34 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — OUTPUT TERMINAL PANEL CONNECTIONS
3Ø 480/277 UVWO Terminal Output Voltages
1.Place the voltage selector switch in the 3Ø 480/277
position as shown in Figure 27.
Figure 27. Voltage Selector Switch 480/277V
Three-Phase Position
2.Connect the load wires to the UVWO terminals as shown
in Figure 28.
1Ø 240V/120V UVWO Terminal Output Voltages
1.Place the voltage selector switch in the 1Ø 240/120
position as shown in Figure 30.
2.Connect the load wires to the UVWO terminals as shown
in Figure 31.
Figure 30. Voltage Selector Switch 240/120V
Single-Phase Position
Figure 28. UVWO Terminal Lugs
240/139V Three Phase Connections
3.Turn the voltage regulator knob (Figure 29) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
Figure 29. Voltage Regulator Knob (139V/240V)
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 35
Figure 31. UVWO Terminal Lugs
1Ø-240V/120V Connections
3.Turn the voltage regulator knob (Figure 32) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
Figure 32. Voltage Regulator Knob (1Ø-240/120V)
DCA-125SSJU SERIES — PRE-SETUP
Circuit Breakers
To protect the generator from an overload, a 3-pole, 300 amp,
main
circuit breaker is provided to protect the UVW output
terminals from overload. In addition two single-pole, 20 amp
GFCI
circuit breakers are provided to protect the GFCI
load
receptacles from overload. Three 50 amp
have also been provided to protect the auxiliary receptacles
from overload. Make sure to switch
the "OFF" position prior to starting the engine.
Lubrication Oil
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 33) on the dipstick. See Table 11 for proper
selection of engine oil.
ALL
circuit breakers
circuit breakers to
Fuel Check
DANGER:DANGER:
DANGER:
DANGER:DANGER:
Refilling the Fuel System
The DCA150SSVU genset may (if equipped with a trailer or
skid) have a
consists of an
mounted
equipped with a
skid type fuel system does not use the internal generator
fuel tank.
Fuel spillage on a
a
fire
or
explosion
wipe up the spilled fuel completely to
prevent fire hazards.
around or near the generator.
double fuel tank system
internal
fuel tank. It is also possible the genset can be
generator fuel tank, and a
skid mounted
hot!
engine can cause
. If fuel spillage occurs,
NEVER!
(Figure 34), which
smoke
trailer
fuel tank (Figure 35). The
Use the instructions in this section that applies to your type
Figure 33. Engine Oil Dipstick
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 Volvo Engine Owner's Manual. Oil should be warm
before draining.
Other types of motor oils may be substituted if they meet
the following requirements:
z
API Service Classification CH-4
z
API Service Classification CG-4
z
API Service Classification CF-4
z
ACEA Specification E3
z
ACEA Specification E2
of fuel tank system.
ALWAYS
fuel.
DONOT fill the fuel tanks beyond their capacities.
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.
liOrotoMdednemmoceR.11elbaT
egnaRerutarepmeTliOepyT
F°32~F°401
)C°5-~C°04(
F°5~F°32
)C°51-~C°5-(
)°51-(C°5woleB03-W0EASRO03EAS
04-W51EAS
03-W5EAS
Figure 34. Double Fuel Tank System
WARNING:WARNING:
WARNING:
WARNING:WARNING:
fill the fuel tank with clean and fresh
ONLY properly trained personel who have
read and understand this section should refill
the double fuel tank system.
Use
#2 diesel fuel
.
#2 diesel
PAGE 36 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — PRE-SETUP
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
Figure 35. Skid Type Fuel Tank System
Refueling Procedure:
DANGER:DANGER:
DANGER:
DANGER:DANGER:
Diesel fuel
to your health and the surrounding
environment. Avoid skin
contact and/or inhaling
fumes.
1.Level Tanks – 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. See Figure 36.
and its vapors are dangerous
ALWAYS!
fuel
fill trailer tank
, before filling secondary internal tank.
first
with
#2 diesel
WARNING:WARNING:
WARNING:
WARNING:WARNING:
ALWAYS!
before refueling.
Figure 36. Only Fill on Level Ground
2.Trailer Fuel Tank First – The trailer fuel tank is the
primary fuel tank and holds a larger capacity of fuel.
The fuel in the trailer will be filtered and sent to the
engine.
ALWAYS
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 37
place trailer on firm level ground
fill trailer fuel tank (Figure 37) first.
Figure 37. Fuel Tank Filling Order
NOTE
NOTE
ONLY! use
refueling.
Fuel from the secondary inner
tank will eventually drain into the
primary trailer tank.
#2 diesel fuel
when
DCA-125SSJU SERIES — PRE-SETUP
3.NEVER overfill trailer fuel tank – It is important to
read the trailer fuel gauge when filling trailer fuel tank.
DO NOT wait for fuel to rise in filler neck. See Figure 38.
Figure 38. Full Trailer Tank
WARNING:WARNING:
WARNING:
WARNING:WARNING:
DO NOT OVER-FILL fuel system. Leave room
for fuel expansion . Fuel expands when heated.
4.Once the trailer tank is full, the
can be filled (See Figure 39). Notice how the trailer
filler tube level rises when the internal tank is filled.
secondary inner tank
5.Figure 40 below reflects a full fuel system.
Figure 40. Full Fuel System
6.Fuel from the engine return line will drain into the secondary
internal fuel tank. This fuel will eventually drain into the
primary trailer tank in order to return to the engine.
WARNING:WARNING:
WARNING:
WARNING:WARNING:
It is recommended to only fill the internal secondary
take to 3/4 full in order to allow for fuel return, fuel
expansion, and to avoid spillage. See Figure 41
for fuel expansion.
Figure 41. Fuel Expansion
Figure 39. Filling Secondary Internal Fuel Tank
PAGE 38 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — PRE-SETUP
Coolant (Ethylane Glycol [Green] / Water — 50/50 mix)
Use only drinkable tap water. If hard water or water with
many impurities is used, the inside of the engine and radiator
may become coated with deposits and cooling efficiency
will be reduced.
An anticorrosion additive added to the water will help prevent
deposits and corrosion in the cooling system. See the engine
manual for further details.
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
If adding coolant/antifreeze
mix to the radiator, DONOT remove the radiator
cap until the unit has completely cooled. The
possibility of
burns.
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 12 for engine, radiator, and recovery tank coolant
capacities. Make sure the coolant level in the recovery tank
is always between the "H" and the "L" markings.
hot!
coolant exists which can cause severe
NOTE
Cleaning the Radiator
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
Air Cleaner
Periodic cleaning/replacement is necessary. Inspect it in
accordance with the John Deere Engine Owner's Manual.
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 John
Deere Engine Owner's Manual.
The fan belt tension is proper if the fan belt bends 10 to 15
mm (Figure 42) when depressed with the thumb as shown
below.
When the antifreeze is mixed with
water, the antifreeze mixing ratio
must be
battery terminal disconnected.
less than 50%.
yticapaCtnalooC.21elbaT
rotaidaRdnaenignE)sretiL32(.laG1.6
knaTevreseR)sretiL9.1(strauQ2
Operation Freezing Weather
When operating in freezing weather, be certain the proper
amount of antifreeze (Table 13) has been added.
serutarepmeTgnitarepOezeerF-itnA.31elbaT
tnioPgnizeerFtnioPgnilioB
%loV
ezeerF-itnA
C°F°C°F°
0442-21-601222
0573-43-801622
Figure 42. Fan Belt Tension
NEVER!
the belts or fan while the
generator set is running.
place hands near
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 39
DCA-125SSJU SERIES — PRE-SETUP
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.
DO NOT over fill. Check to see whether the battery cables
are loose. Poor contact may result in poor starting or
malfunctions.
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.
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.
Battery Cable Installation
ALWAYS be sure the battery cables (Figure 43) 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.
Always
keep the terminals firmly tightened.
When connecting battery do the following:
1.NEVER connect the battery cables to the battery
terminals when the
Heat, RUN, or START position. ALWAYS make sure
that the ignition switch is in the STOP position when
connecting the battery.
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.
NOTE
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
ignition
switch is in either the Pre-
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.
:
Inadequate battery connections may cause
poor starting of the generator, and create
other malfunctions.
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
Figure 43. Battery Connections
:
ALWAYS
terminal FIRST and reconnect
negative terminal LAST.
disconnect the negative
Alternator
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 leads an electrolyte corrosion causing an
alternator failure.
Before charging the battery with an external electric source,
be sure to disconnect the battery cables.
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.
If any hose (
immediately.
fuel
or
oil
) lines are defective replace them
PAGE 40 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — GENERATOR START-UP PROCEDURE (MANUAL)
WARNING:WARNING:
WARNING:
WARNING:WARNING:
The engine's exhaust contains harmful
emissions.
ventilation when operating
away from nearby personnel.
Before Starting
Engine Operating Panel S/N 73002140 and below
ALWAYS have adequate
. Direct exhaust
CAUTION:
NEVER!
main, GFCI
in the ON (closed) position.
NOTE
manually start the engine with the
or
auailliary
circuit breakers
2.Connect the load to the
receptacles
connection points can be found on the output terminal
panel. To gain access to the UVWO terminals or other
power receptacles, unlock the access cover and lift the
door.
3.The UVWO terminals are protected by a plastic cover,
remove this cover to gain access to the terminals.
Tighten terminal nuts securely to prevent load wires from
slipping out.
as shown in Figure 46. These load
UVWO
terminals or
auxiliary
Steps 1 thru 19 are referenced for
Engine Operating Panels up to
S/N 7500705 (Figure 44). This unit
has a ignition key switch and a
throttle lever. It does not have an
MPEC unit.
Figure 44. Engine Operating Panel
Up to S/N 7500507
1.Place the
in the “OFF” position prior to starting the engine.
main, G.F.C.I.
and
aux.
circuit
breakers (Figure 45)
Figure 46. Load Connections
4.Close all engine enclosure doors (Figure 47).
Figure 47. Engine Enclosure Doors
5.When starting the generator in COLD weather conditions,
tu rn the
warm weather conditions, pre-heating is not necessary. Skip to
step 7.
ignition key
to the “PREHEAT ” position (Figure 48). In
Figure 48. Engine Ignition Switch (Pre-Heat)
Figure 45. Main, Aux. and GFCI
Circuit Breakers (OFF)
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 41
DCA-125SSJU SERIES — GENERATOR START-UP PROCEDURE (MANUAL)
6.Press and hold the engine cold starting button
(Figure 49) until the button illuminates (ON).
Figure 49. Cold Starting Button
7. Place the voltage selector switch
in the desired voltage position
(Figure 50).
Figure 50. Voltage Selector
Switch
STARTING (MANUAL)
Engine Operating Panel up to S/N 7500507
8.Place the
engine throttle control
in the “LOW” position
(Figure 51).
11. The generator's frequency meter (Figure 54) should be
displaying the 60 cycle output frequency in HERTZ.
Figure 54. Frequency Meter (Hz)
12. The generator's AC-voltmeter (Figure 55) will display the
generator’s output in VOLTS . If the voltage is not within
the specified tolerance, use the voltage adjustment
control knob (Figure 56) to increase or decrease the
desired voltage.
Figure 55. Voltmeter
Figure 51. Engine Throttle Control
9.Turn the ignition key to the “START” position (Figure 52)
and listen for the engine to begin cranking. After the
engine starts release the ignition key.
Figure 52. Engine Ignition Switch (Start)
10. Once the engine has started, let it run for 3-5 minutes,
then turn the throttle handle control (Figure 53) to the
“HIGH” position.
Figure 53. Engine Throttle Control
Figure 56. Voltage Adjust Control Knob
13. The ammeter (Figure 57) 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 57. Ammeter (No Load)
14. The engine oil pressure gauge
(Figure 58) will indicate the oil
pressure (kg/ cm2) of the engine.
Under normal operating conditions
the oil pressure is approximately
Figure 58. Oil Pressure Gauge
PAGE 42 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — GENERATOR START-UP PROCEDURE (MANUAL)
15. The
16. The
coolant temperature gauge
the coolant temperature. Under normal operating
conditions the coolant temperature should be between
165 and 215 degrees Fahrenheit (
Figure 59. Coolant Temperature Gauge
tachometer gauge
speed of the engine when the generator is operating.
Under normal operating conditions this speed is
approximately 1800 RPM’s.
(Figure 60) will indicate the
(Figure 59) will indicate
Green Zone
).
18. Observe the generator's ammeter (Figure 62) 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 62. Ammeter (Load)
19. The generator will run until manually stopped or an
abnormal condition occurs.
Figure 60. Engine Tachometer Gauge
17. Place the
“ON” position (Figure 61).
main, GFCI
Figure 61. Main, Aux. and GFCI
Circuit Breakers (ON)
, and
aux
. circuit breakers in the
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 43
DCA-125SSJU SERIES — GENERATOR START-UP PROCEDURE (MANUAL)
WARNING:WARNING:
WARNING:
WARNING:WARNING:
The engine's exhaust contains harmful
emissions.
ventilation when operating
away from nearby personnel.
Before Starting
Engine Operating Panel S/N 7500508~
ALWAYS have adequate
CAUTION:
NEVER!
main, GFCI
the ON (closed) position.
Steps 20 thru 31 are referenced
for Engine Operating Panel S/N7500508~ (Figure 63). This unit
does
not
have a key ignition
switch or a throttle lever. It does
have an “
that is used in conjunction with
the MPEC unit.
engine speed switch
manually start the engine with the
or
auailliary
”
23. Set engine speed switch to “LOW ” (Figure 65).
. Direct exhaust
Figure 65. Engine Speed Switch (Low)
24. Place the Auto-Off/Reset-Manual switch in the
“MANUAL” position to start the engine (Figure 66). Once
the engine starts, let the engine run for 1-2 minutes.
Listen for any abnormal noises.
circuit breakers in
Figure 66. Auto-Off/Reset-Manual Switch
25. Once the engine is warm and the engine is running properly,
set the engine speed switch to “HIGH ” (Figure 67).
Figure 63. Engine Operating Panel
S/N 7500508~
20. Perform steps 1 through 4 in the
(page 41-42) as outlined in the
Start-up Procedure
S/N 73002140).
21. In cold weather conditions, perform step 6 in the
Starting
Generator Start-up Procedure
up to S/N 7500508). Otherwise skip to step 22.
22. Place the voltage selector switch
in the desired voltage position
(Figure 64).
Figure 64. Voltage Selector
section (page 42) as outlined in the
Switch
(Engine Operating Panel up to
Before Starting
Manual Generator
(Engine Operating Panel
section
Before
Manual
Figure 67. Engine Speed Switch (High)
26. Verify that the "Engine Running" status LED on the MPEC
unit (Figure 68) is "ON" (lit) after the engine has been started.
Figure 68. Engine Running LED (ON)
27. Continue operating the generator as outlined in steps 11
thru 19 (pages 42-43).
PAGE 44 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — GENERATOR START-UP PROCEDURE (AUTO MODE)
DANGER:
switch
transfer switch.
. Serious
CAUTION:
NOTE
Before connecting this
generator to any
building’s electrical
system, a licensed
electrician must install
isolation
an
injury
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.
(transfer)
or
death
may result without this
When the generator is set in the
“AUTO” mode, the generator will
automically start
comercial power falling below a
prescribed level by means of a
contact closure that is generated
automatically by a transfer switch.
in the event of
CAUTION:
30. Place the Off/Manual/Auto switch (Figure 70) in the
“AUTO“ position .
Figure 70. Off/Manual Auto Switch (AUTO)
31. Continue to follow the steps outlined in the “
Start-up”
The
Engine Speed Switch
to the “HIGH” position when running in the
Auto-Start
in the proper position can result in damage
to your generator when it turns on.
procedure (start at step 11, page 42).
mode. Failing to set the switch
must be set
Manual
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.
28. Perform steps 20 through 22 in the
section (page 44) as outlined in the
Procedure
29. Set the engine speed switch (Figure 69) to the “HIGH”
position.
Figure 69. Engine Speed Switch (High)
.
Before Starting
Manual Starting
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 45
DCA-125SSJU SERIES — GENERATOR SHUT-DOWN PROCEDURE
Shutdown Procedure - Ignition Switch
(Up to S/N 7500507)
To shutdown the generator use the following procedure:
1.Place both the MAIN, GFCI and LOAD circuit breakers
as shown in Figure 45 to the "OFF position".
2. Place the engine throttle control in the “LOW” position
(Figure 71).
Figure 71. Engine Throttle Control (Low)
3.Let the engine cool by running it for 3-5 minutes with no
load applied.
4.Turn the Ignition Key Switch (Figure 72) to the “OFF“
position.
To shutdown the generator use the following procedure:
1.Place both the MAIN, GFCI and LOAD circuit breakers
as shown in Figure 45 to the "OFF position".
2. Place the engine speed switch in the “LOW” position
(Figure 73).
Figure 73. Engine Speed Switch (Low)
3.Let the engine cool by running it for 3-5 minutes with no
load applied.
4.Place the Auto-Off/Reset-Manual switch (Figure 74) to
the
OFF/Reset
position.
Figure 72. Engine Ignition Switch (Stop)
5.Remove all loads from the generator.
Emergency Shutdown Procedure - Ignition Switch
(Up to S/N 7500507)
1.To shut-down the engine in the event of an emergency,
switch the
breakers to “OFF” position.
2. Turn the ignition switch key to the “STOP”
position (Figure 72).
MAIN, GFCI
and
LOAD
CAUTIONCAUTION
CAUTION
CAUTIONCAUTION
(Figure 61) circuit
:
NEVER stop the engine suddenly except
in an emergency. DO NOT use the
emergency stop switch a as method of
shutting down the generator. This switch is
ONLY to be used in the event of an
emergency.
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.
Engine Side(Refer to the Engine Instruction Manual)
Air Cleaner
Every 50 hours: Remove air cleaner element and clean the heavy
duty paper element with kerosene, or foam element with liquid
detergent and hot water. Wrap foam element in a cloth and
squeeze dry. For heavy duty paper element, wipe excess
kerosene with towel.
Service Daily
If the engine is operating in very
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
conditions exists.
Fuel Addition
Add diesel fuel (the grade may vary according to season and
locations). Always pour through the mesh filter.
Removing Water from the Fuel Tank
After prolonged use, water and other impurities accumulate in
Air Cleaner with Dust Indicator
This indicator 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
the bottom of the tank. Occasionally remove the drain cock and
drain the contents. 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.
needs changing. After changing the air element, press the dust
indicator button to reset the indicator.
dusty
or
dry grass
frequently
conditions, a
if these
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 47
DCA-125SSJU SERIES — MAINTENANCE
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.
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.
Cleaning the Fuel Strainer
Clean the fuel strainer if it contains dust or water. Remove
dust or water in the strainer cap and wash it in gasoline.
Securely fasten the fuel strainer cap so that fuel will not
leak. Check the fuel strainer every 200 hours of operation or
once a month.
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 33.
Flushing Out Radiator and Replacing Coolant
z
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.
z
Check hoses for softening and kinks. Check clamps for
signs of leakage.
z
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.
z
Tighten both cocks and replace the overflow tank.
z
Replace with coolant (Table 12 for correct mixture).
z
Close radiator cap tightly.
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
Allow engine to
radiator. Flushing the radiator while
will damage radiator.
cool
when flushing out
hot!
Replacing Oil Filter
Detach the oil filter by loosening center bolt and remove
the element together with the filter body.
Apply a film of oil to the gasket for the cartridge.
Install the filter body together with the element and fix
them by tightening the center bolt.
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.
Replacing Fuel Filter
Replace the fuel filter cartridge with new one every 400
hours or so.
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.
Vent any air.
Feed Pump Strainer Cleaning
The strainer is incorporated in the feed pump inlet side joint
bolt. Clean the strainer with compressed air and rinse it in
the fuel oil.
Generator Storage
For longe term storage of the generator the following is
recommended:
z
Fill the fuel tank completely. Treat with a fuel stabilizer
if necessary.
z
Completely drain the oil from the crankcase and refill if
necessary with fresh oil.
z
Clean the entire generator, internal and external.
z
Cover the generating set and store in a clean, dry place.
z
Disconnect the battery.
z
Make sure engine coolant is at proper level.
z
If generator is mounted on a trailer, jack trailer up and
place on block so tires do touch the ground or remove
tires.
PAGE 48 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — MAINTENANCE
Jacket Water Heater and Internal Battery Charger 120
VAC Input Receptacles (OPTIONAL)
This generator is equipped with two 120 VAC, 20 amp input
receptacles located on the output terminal panel.
The purpose of these receptacles is to provide power via
commercial power to the
battery charger
These receptacles will ONLY function when commercial
power has been supplied to them (Figure 75). To apply
commercial power to these receptacles, a power cord of
adequate size will be required (See Table 5).
When using the generator in
to apply power to jacket water heater. However, if the
generator will be used in
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.
.
jacket water heate
hot
climates there is no reason
cold
climates it is always a good
r and i
nternal
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 an power cord of
adequate size.
NOTE
To ensure adequate starting
capability, always have power
applied to the generator's
internal battery charger
.
Figure 75. Battery Charger &
Jacket Water Heater Power Connections
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 49
DCA-125SSJU SERIES — TRAILER BRAKES MAINTENANCE
Brakes
Trailer brakes should be inspected the
first 200 miles
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
Hydraulic Surge Brakes
of
Hydraulic surge brakes (Figure 76) 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.
brakes more frequently.
Figure 74 displays the major hydraulic surge brake
components that will require inspection and maintenance.
Please inspect these components as required using steps 1
through 8 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.
4.With a screwdriver or standard adjusting tool, rotate the
Figure 76. Hydraulic Brake Components
star wheel of the adjuster assembly to expand the brake
shoes.
Actuator
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.
Hydraulic surge braking requires the installation of an actuator
at the tongue of the trailer. Remember the
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
7.Replace the adjusting hole cover and lower the trailer to
hydraulic pressure to the trailer brakes.
the ground.
Periodically check and test the surge “
8.Repeat steps 1 through 7 on the remaining brakes.
sure that it is functioning correctly. Never use an undersize
actuator.
PAGE 50 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — TRAILER MAINTENANCE
Tires/Wheels/Lug Nuts
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.
Suspension
leaf suspension
The
(Figure 77) 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
CAUTION:
as detailed in Table 17.
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.
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.
Figure 77. Major Suspension Components
springs and associated components
Table 16 (Tire Wear Troubleshooting) will help pinpoint the
causes and solutions of tire wear problems.
TABLE 16. TIRE WEAR TROUBLESHOOTING
WEAR PATTERN
Center Wear
Edge Wear
Side Wear
Toe WearIncorrect toe-in.Align wheels.
CuppingOut-of-balance.
Flat Spots
CAUSE
Over Inflation.
Under Inflation.
Loss of camber
or overloading.
Wheel lockup &
tire skidding.
SOLUTION
Adjust pressure to
particular load per tire
manufacturer.
Adjust pressure to
particular load per tire
manufacturer.
Make sure load does
not exceed axle rating.
Align wheels.
Check bearing adjustment
and balance tires.
Avoid sudden stops when
possible and adjust brakes.
SHACKLE BOLT
SPRING EYE BOLT
SHOULDER TYPE
SHACKLE BOLT
CAUTION:
ALWAYS
or installing force fitted parts. Failure to comply
may result in serious injury.
wear safety glasses when removing
metI).sbL-.tF(euqroT
TLOB-U"8/353-XAM03-NIM
TLOB-U"61/706-XAM54-NIM
TLOB-U"2/106-XAM54-NIM
SNUG FIT ONLY.PARTS MUST ROTATE FREELY
LOCKING NUTS OR COTTER PINS ARE PROVIDED
TO RETAIN NUT
-
BOLT ASSEMBLY
stnemeriuqeReuqroTnoisnepsuS.71elbaT
.
.
05-XAM03-NIM
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 51
DCA-125SSJU SERIES — 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 78. 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.
stnemeriuqeReuqroTeriT.81elbaT
eziSleehWssaPtsriF
SBL-TF
"2152-0204-5356-05
"3152-0204-5356-05
"4152-0206-05021-09
"5152-0206-05021-09
"6152-0206-05021-09
ssaPdnoceS
SBL-TF
ssaPdrihT
SBL-TF
Figure 78. Wheel Lug Nuts Tightening Sequence
NEVER
NOTE
PAGE 52 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
gun to tighten wheel lug nuts.
use an pneumatic air
DCA-125SSJU SERIES — TRAILER WIRING DIAGRAM
Figure 79. Trailer/Towing Vehicle Wiring Diagram
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 53
DCA-125SSJU SERIES — GENERATOR WIRING DIAGRAM
Figure 80. Generator Wiring Diagram
PAGE 54 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — ENGINE WIRING DIAGRAM (IGNITION SWITCH)
Figure 81. Engine Wiring Diagram(Ignition Switch)
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 55
DCA-125SSJU SERIES — ENGINE WIRING DIAGRAM (ENGINE CONTROLLER)
PAGE 56 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
NOTE PAGE
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 57
DCA-125SSJU SERIES — TROUBLESHOOTING (ENGINE)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, use the table shown below and on the next page for diagnosis based on the Engine Troubleshooting (Table 19).
If the problem cannot be remedied, consult our company's business office or service plant.
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 59
DCA-125SSJU SERIES — TROUBLESHOOTING (GENERATOR)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, use the table shown below for diagnosis based on the Generator Troubleshooting (Table 20). If the problem
cannot be remedied, consult our company's business office or service plant.
PAGE 60 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — TROUBLESHOOTING (MPEC)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a breakdown,
use the table shown below for diagnosis based on the MPEC Troubleshooting (Table 21). If the problem cannot be remedied,
consult our company's business office or service plant.
50602041290OIL FILTER
50602042590FUEL FILTER
50602046377AIR ELEMENT
30602042420FUEL FILTER, FUEL TANK
10602122272UNIT, OIL PRESSURE
10602123261UNIT, WATER TEMPERATURE
10601810245BULB, ALARM LAMP
1R1234145FAN BELT
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 87
ENCLOSURE ASSY.
DCA-125SSJU SERIES — ENCLOSURE ASSY.
ADD THE FOLLOWING DIGITS AFTER THE PART NUMBER
WHEN ORDERING ANY PAINTED PANEL TO INDICATE
COLOR OF UNIT:
1-ORANGE
2-WHITE
3 -SPECTRUM GRAY
4 -SUNBELT GREEN
THE SERIAL NUMBER MAY BE REQUIRED.
5 -BLACK
6 -CATERPILLAR YELLOW
7 -CATO GOLD
PAGE 88 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES — ENCLOSURE ASSY.
ENCLOSURE ASSY.
NO.PART NO.PART NAMEQTY.REMARKS
1M3413000102BASE ................................................ 1 ........... S/N 7500001 TO 7500307
1M3413000112BASE ................................................ 1 ........... S/N 7500308 TO S/N7500507
23011008020HEX. HEAD BOLT ............................. 3 ........... REPLACES 0016908020
24M9310000004BLIND PLUG2
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 89
ENCLOSURE ASSY. (CONT.)
DCA-125SSJU SERIES — ENCLOSURE ASSY. (CONT.)
ADD THE FOLLOWING DIGITS AFTER THE PART NUMBER
WHEN ORDERING ANY PAINTED PANEL TO INDICATE
COLOR OF UNIT:
1-ORANGE
2-WHITE
3 -SPECTRUM GRAY
4 -SUNBELT GREEN
THE SERIAL NUMBER MAY BE REQUIRED.
5 -BLACK
6 -CATERPILLAR YELLOW
7 -CATO GOLD
PAGE 90 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 93
Effective: October 1, 2002
TERMS AND CONDITIONS OF SALE — PARTS
PAYMENT TERMS
Terms of payment for parts are net 10 days.
FREIGHT POLICY
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.
MINIMUM ORDER
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.
RETURNED GOODS POLICY
Return shipments will be accepted and credit
will be allowed, subject to the following provisions:
1.A Returned Material Authorization must
be approved by Multiquip prior to shipment.
2.To obtain a Return Mater ial Authorization,
a list must be provided to Multiquip Parts
Sales that defines item numbers, quantities, and descriptions of the items to be
returned.
a. The parts numbers and descriptions
must match the current parts price
list.
b. The list must be typed or computer
generated.
c. The list must state the reason(s) for
the return.
d. The list must reference the sales
order(s) or invoice(s) under which the
items were originally purchased.
e. The list must include the name and
phone number of the person requesting the RMA.
3.A copy of the Return Material Authorization 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.
5.Parts must be in new and resalable
6.The following items are not returnable:
7.The sender will be notified of any
8.Such material will be held for five
9.Credit on returned parts will be issued at
10. In cases where an item is accepted, for
11. Credit issued will be applied to future
PRICING AND REBATES
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
condition, in the original Multiquip package (if any), and with Multiquip part
numbers clearly marked.
a. Obsolete parts. (If an item is in the
price book and shows as being
replaced by another item, it is
obsolete.)
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.
c. Any line item with an extended dealer
net price of less than $5.00.
d. Special order items.
e. Electrical components.
f.Paint, chemicals, and lubricants.
g. Decals and paper products.
h. Items purchased in kits.
material received that is not acceptable.
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.
dealer net price at time of the original
purchase, less a 15% restocking charge.
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.
purchases only.
for price increases will not be made for stock
on hand at the time of any price change.
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.
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.
LIMITATIONS OF SELLER’S LIABILITY
Multiquip shall not be liable here under 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.
LIMITATION OF WARRANTIES
No warranties, express or implied, are made in
connection with the sale of parts or trade acces-
sories nor as to any engine not manufactured
by Multiquip. Such warranties made in connec-
tion with the sale of new, complete units are
made exclusively by a statement of warranty
packaged with such units, and Multiquip nei-
ther assumes not 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.
PAGE 94 — DCA-125SSJU SERIES (STANDARD) — PARTS AND OPERATION MANUAL — REV. #4 (06/03/03)
NOTE PAGE
DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 95
OPERATION AND PARTS MANUAL
HERE'S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
PARTS DEPARTMENT
800-427-1244 or 310-537-3700
FAX: 800-672-7877 or 310-637-3284