PARTS AND OPERATION MANUAL
OPERATION MANUAL
WHISPERWATTTM SERIES
MODEL DCA-15SPXU4
60 Hz GENERATOR
Revision #0 (03/31/11)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALLTIMES.
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NOTE PAGE
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TABLE OF CONTENTS
MQ POWER DCA-15SPXU4
WHISPERWATTTM GENERATOR
California Proposition 65 Warning .....................................2
Table Of Contents .............................................................4
Parts Ordering Procedures ...............................................5
Specifications ................................................................... 6
Dimensions (Top, Side, Front) .......................................... 7
Safety Message Alert Symbols ....................................8-9
Rules for Safe Operation ........................................... 10-14
Installation ................................................................. 16-17
General Information ........................................................ 18
Major Components ......................................................... 19
Generator Control Panel ............................................ 20-21
OutputTerminal Panel Familiarization ........................ 22-24
Load Application/Max Amperage .................................... 25
Gauge Reading/Terminal Panel Connections .................. 26
Setup ......................................................................... 27-30
Generator Start-up Procedure ................................... 31-32
Generator Shut-Down Procedure .................................... 33
Maintenance (Engine) ................................................ 34-36
Maintenance (Trailer) ................................................. 37-39
Generator Wiring Diagram ............................................... 40
Engine Wiring Diagram ................................................... 41
Troubleshooting (Engine) ........................................... 42-43
Troubleshooting (Generator) ............................................ 44
Troubleshooting (Pre-Heat Lamp Codes) ........................ 45
Specification and part
number are subject to
change without notice.
NOTE
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DCA-15SPXU4 — SPECIFICATIONS
Table 1. Generator Specifications
Model
Type
DCA-15SPXU4
Revolving field, self ventilated, open protected type synchronous
generator
Phase
Standby Output
Prime Output
Voltage
Single Phase 3-Wire
16.5 KW
15 KW
240V/120
60 Hz
Frequency
Speed
1800 rpm
1.0
Power Factor
Aux. AC Power
(GFCI)
2.4 KW @120 VAC Single Phase, 60 Hz
3.6 KW@120 VAC Single Phase, 60 Hz
7.2 KW@240 VAC Single Phase, 60 Hz
Aux. AC Power
(L5-30R)
Aux. AC Power
(L6-30R )
Aux. AC Power
(CS6369)
12 KW@240 VAC Single Phase, 60 Hz
6 KW@120 VAC Single Phase, 60 Hz
Table 2. Engine Specifications
KUBOTA V2203-M
Model
Type
4 Cycle, water-cooled, swirl combustion chamber type
4 cylinders
No. of Cylinders
Bore x Stroke
Rated Output
Displacement
Starting
3.43 in. x 3.64 in. (87 mm x 92.4 mm)
27.1 HP/1800 rpm
134.1 cu. in. (2,197 cc)
Electric
Coolant Capacity
Lube Oil Capacity
Fuel Tank Capacity
2.09 gal. (7.9 liters)
2.00 gal. (7.6 liters)
16.4 gal. (62 liters)
1.37 gal. (5.2 L)/hr at full load
1.08 gal. (4.08 L)/hr at 3/4 load
Fuel Consumption
0.83 gal. (3.14 L)/hr at 1/2 load
0.62 gal. (2.34 L)/hr at 1/4 load
12V- 65AH (27:525A)
Battery
Fuel
#2 Diesel Fuel
577 kg
Dry Weight
Total Weight
649 kg
PAGE 6 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — DIMENSIONS (TOP, SIDE AND FRONT)
A
TOP VIEW
B
C
Figure 1. Dimensions
15
MQPOWER
WHISPERWATT
SIDE VIEW
D
FRONT VIEW
TABLE 3. DIMENSIONS
Reference Letter
Dimension in. (mm.)
21.65 (550)
20.07 (510)
U
N
V
E
A
B
C
D
E
F
Denyo
21.85 (555)
61.02 (1,550)
35.43 (900)
F
25.60 (650)
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DCA-15SPXU4 — SAFETY MESSAGE ALERT SYMBOLS
FORYOUR SAFETY ANDTHE SAFETY OF OTHERS!
HAZARD SYMBOLS
Potential hazards associated with the operation of this
equipment will be referenced with "Hazard Symbols" which
appear throughout this manual, and will be referenced in
conjunction with Safety "Message Alert Symbols".
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
developed to provide complete
instructions for the safe and
efficient operation of the
MQ Power Model DCA-15SPXU4
Whisperwatt™ Generator.
WARNING - LETHAL EXHAUST GASES
NOTE
Gasoline engine exhaust gases contain
poisonous carbon monoxide. This gas is
colorless and odorless, and can cause
DEATH if inhaled. NEVER operate this
Before using this generator, ensure that the operating
individual has read and understands all instructions in
this manual.
equipment in a confined area or enclosed structure that
does not provide ample free flow air.
WARNING - EXPLOSIVE FUEL
SAFETY MESSAGE ALERT SYMBOLS
Diesel fuel is extremely flammable, and
its vapors can cause an explosion if
ignited. DO NOT start the engine near
spilled fuel or combustible fluids.
DO NOT fill the fuel tank while the engine
is running or hot.
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.
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
WARNING - 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.
You COULD be KILLED or SERIOUSLY injured if
you do not follow directions.
CAUTION
You CAN be injured if you do not follow directions
DANGER - ELECTROCUTION HAZARDS
During operation of this generator, there
exists the possibility of electrocution,
electrical shock or burn, which can cause
severe bodily harm or even DEATH!
PAGE 8 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — SAFETY MESSAGE ALERT SYMBOLS
WARNING - ROTATING PARTS
CAUTION - RESPIRATORY HAZARDS
NEVER operate equipment with covers,
or guards removed. Keep fingers, hands,
hair and clothing away from all moving
parts to prevent injury.
ALWAYS wear approved respiratory
protection.
CAUTION - ACCIDENTAL STARTING
CAUTION - SIGHT AND HEARING HAZARDS
ALWAYS place the engine ON/OFF
switch (MPEC) in the OFF/RESET
position when the generator is not in use.
ALWAYS wear approved eye and
hearing protection.
CAUTION - OVER-SPEED CONDITIONS
CAUTION - EQUIPMENT DAMAGE MESSAGES
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.
Other important messages are provided throughout this
manual to help prevent damage to your generator, other
property, or the surrounding environment.
CAUTION - ENGINE LOAD (WET-STACKING)
Wet-Stacking is a common problem with diesel engines
which are operated for extended periods with light or no
load applied. When a diesel engine operates without
sufficient load (less than 40% of the rated output) it will
not operate at its optimum temperature. This will allow
unburned fuel to accumulate in the exhaust system, which
can foul the fuel injectors, engine valves and exhaust
system, including turbocharges, and reduce the operating
performance.
This generator, other property, or
the surrounding environment
could be damaged if you do not
follow instructions.
In order for a diesel engine to operate at peak efficiency it
must be able to provide fuel and air in the proper ratio and
at a high enough engine temperature for the engine to
completely burn all of the fuel.
Wet stacking does usually cause any permanent damage
and can be alleviated if additional load is applied to relieve
the condition. It can reduce the system performance and
increase maintenance. Applying an increasing load over a
period of time until the excess fuel is burned off and the
system capacity is reached usually can repair the condition.
This can take several hours to burn off the accumulated
unburned fuel.
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DCA-15SPXU4 — RULES FOR SAFE OPERATION
■
NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.
DANGER - READTHIS MANUAL!
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.
■
NEVER touch the hot exhaust
manifold, muffler or cylinder.
Allow these parts to cool before
servicing engine or generators.
The following safety guidelines should always be used when
operating the DCA-15SPXU4Whisperwatt™ AC Generator.
General Safety:
■
DO NOT operate or service this
equipment before reading this entire
manual.
■
The engine section of this generators requires an adequate
free flow of cooling air. NEVER 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 generators
The operator MUST BE familiar with proper safety
precautions and operations techniques before using
generator.
■
■
This equipment should not be operated by persons under
18 years of age.
or engine and may cause
injury
to
people.
NEVER operate this equipment without proper protective
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job.
Remember the generator's
engine gives off DEADLY
carbon monoxide gas.
Denyo
DANGEROUS
GAS FUMES
■
■
ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
■
■
NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
ALWAYS use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it to
cool.DO NOT smoke around or near the
machine. Fire or explosion could result
from fuel vapors, or if fuel is spilled on a
hot engine.
NEVER operate this equipment under the influence or
drugs or alcohol.
■
■
NEVER operate the generator in an
explosive atmosphere or near
combustible materials. An explosion or
fire could result causing severe bodily
harm or even death.
■
ALWAYS wear proper respiratory (mask),
hearing and eye protection equipment when
operating the generator.
NEVER disconnect any "emergency or safety devices".
These devices are intended for operator safety. Disconnection
of these devices can cause severe injury, bodily harm or even
death! Disconnection of any of these devices will void all
warranties.
■
■
Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.
Manufacturer does not assume responsibility for any
accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.
PAGE 10 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — RULES FOR SAFE OPERATION
■
■
ALWAYS be sure the operator is familiar with proper safety
precautions and operation techniques before using
generators.
Maintenance Safety
■
NEVER lubricate components or attempt service on a running
machine.
NEVER leave the generator unattended, turn off engine when
unattended.
■
HighTemperatures – Always stop engine and
allow the engine to cool before adding fuel, oil
or performing service and maintenance
functions. Contact with hot! components can
cause serious burns.
■
■
■
Unauthorized equipment modifications will void all warranties.
ALWAYS ensure generator is on level ground before use.
DO NOT place hands or fingers inside generators engine
compartment when engine is running.
■
■
Keep the machinery in proper running condition.
Fix damage to the machine immediately and replace any
broken parts immediately.
■
■
NEVER run engine without air cleaner.Severe engine damage
may occur.
■
■
ALWAYS replace any worn or damaged warning decals.
NEVER change or adjust the engine speed which has been
set at the factory prior to shipping.
ALWAYS store equipment properly when it is not being used.
Equipment should be stored in a clean, dry location out of the
reach of children and un-authorized personnel.
Power Cord Safety
■
The electrical voltage required to operate the generator can
cause severe injury or even death through physical contact
with live circuits. Turn all circuit breakers OFF before
performing maintenance on the generator.
■
NEVER let power cables or cords lay in water.
■
NEVER stand in water while AC power from the generators
is being transfer to a load.
■
■
■
■
■
■
■
Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used motor oil, fuel and fuel filters.
■
■
■
NEVER use a defective or frayed power cable. Check the
cable for cuts in the insulation.
DO NOT use food or plastic containers to dispose of
hazardous waste.
NEVER use a extension cord that is frayed or damaged where
the insulation has been cut.
DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.
ALWAYS make certain that proper power or extension cord
has been selected for the job See Table 6.
ALWAYS allow the machine a proper amount of time to
cool before servicing.
Grounding Safety
ALWAYS service air cleaner frequently to prevent engine
malfunction.
■
ALWAYS make sure that electrical circuits are properly
grounded per the National Electrical Code (NEC) and
local codes before operating generator. Severe injury or
death! by electrocution can result from operating an
ungrounded generator.
ALWAYS disconnect the NEGATIVE battery terminal
before performing service on the generator.
Follow all battery safety guidelines listed in this manual
when handleing or servicing the generator.
■
■
ALWAYS make sure the generators are properly grounded to
a suitable earth ground (GROUND ROD). See installation in
this manual.
NEVER use gas piping as an electrical ground.
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DCA-15SPXU4 — RULES FOR SAFE OPERATION
Battery Safety
WARNING - BURN HAZARDS
Use the following guidelines when handling the battery:
To prevent burns, DO NOT touch or open any of the below
mentioned components while the engine is
running or immediately after operations.
Always allow sufficient time for the engine
and generator to cool before performing
maintenance.
■
The battery contains acids that can
cause injury to the eyes and skin. To
avoid eye irritation, always wear safety
glasses.
■
Use well insulated gloves when picking up the battery.
■
Radiator Cap - Removing the radiator cap while the
engine 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.
DANGER - EXPLOSION HAZARDS
The risk of an explosion exists when performing service
on the battery. To avoid severe injury or DEATH:
■
Coolant Drain Plug - Removing the
coolant drain plug while the engine is
hot will result in hot coolant gushing
out of the coolant drain plug, therefore
causing severe scalding to any persons
in the general area of the generator.
■
DO NOT drop the battery.There
is the possibility of risk that the
battery may explode.
■
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.
■
Engine Oil Drain Plug - Removing the engine oil drain
plug while the engine is hot will result in hot oil gushing
out of the oil drain plug, therefore causing severe
scalding to any persons in the general area of the
generator.
■
ALWAYS keep the battery charged. If the battery is not
charged a buildup of combustible gas will occur.
■
■
ALWAYS keep battery charging and cables in good
working condition. Repair or replace all worn cables.
ALWAYS recharge the battery in an vented air
environment, to avoid risk of a dangerous concentration
of combustible gases.
■
■
In case the battery liquid (dilute sulfuric acid) comes in
contact with clothing or skin, rinse skin or clothing
immediately with plenty of water.
In case the battery liquid (dilute sulfuric acid) comes in
contact with your EYES, rinse eyes immediately with
plenty of water and contact the nearest doctor or hospital
to seek medical attention.
PAGE 12 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — RULES FOR SAFE OPERATION
DANGER-Electrocution Hazards
DANGER-Lethal Exhaust Gas Hazards
During operation of this generation, there
exists the possibility of electrocution,
electrical shock or burn, which can
cause severe bodily harm or even
DEATH!
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.
To avoid these hazards:
NEVER use damaged or worn cables when connecting
equipment to the generator.Make sure power connecting
cables are securely connected to the generator’s output
receptacles, incorrect connections may cause damage
to the generators and electrical shock.
DANGER
Using a generator indoors CAN KILL YOU IN MINUTES.
Generator exhaust contains carbon monoxide. This is
a posion you cannot see or smell
20A
120
2900
V
GA2R
120V
A
B
C
C
I
R
K
E
U
R
I
T
NEVER grab or touch a live
power cord with wet hands, the
possibility exist of electrical
shock, electrocution, and even
death!
20A
20A
120
120
2900
2900
V
V
ON
GA-2.R
GA-2.9R
120V
A
BR
E
I
R
K
E
U
R
IT
120V
A
BR
E
I
R
K
E
U
OFF
ON
ON
OFF
OFF
Only use OUTSIDE and
far away from windows,
doors, and vents.
NEVER use inside a home
or garage, even if doors
and windows are open
Avoid other generator hazards.
READ MANUAL BEFORE USE.
Emergencies
NEVER insert any objects into
the output receptacles during
operation. This is extremely
■
ALWAYS know the location of the
nearest fire extinguisher.
dangerous. ALWAYS turn-off
the generators and place all circuit breakers in the “OFF”
position when contact with the output receptacles is
required. There exist the possibility of electrocution,
electrical shock or burn, which can cause severe
bodily harm or even death!
■
■
ALWAYS know the location of the nearest
first aid kit.
In emergencies always know the location of the
nearest phone or keep a phone on the job site.
Also know the phone numbers of the nearest
ambulance, doctor and fire department. This
information will be invaluable in the case of an
emergency.
Backfeed to a utility system can cause
electrocution and or property damage.
NEVER connect the generators to a
building's electrical system without a
transfer switch or other approved device.
All installations should be performed by
a licensed electrician in accordance
with all applicable laws and electrical
codes. Failure to do so could result in
electrical shock or burn causing serious
injury or even death!
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DCA-15SPXU4 — RULES FOR SAFE OPERATION
■
DOT Requirements include the following:
If your generator is trailer mounted, please
read the towing and safety requirements
listed below.
Connect and test electric brake operation.
Secure portable power cables in cable tray with tie
wraps.
■
The maximum speed for highway towing is 55 MPH
unless posted otherwise. Recommended off-road towing
is not to exceed 15 MPH or less depending on type of
terrain.
Towing andTransporting Safety
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.
■
■
■
Place chock blocks underneath wheel to prevent rolling,
while parked.
Use the trailer’s swivel jack to adjust the trailer height to
a level position while parked.
The following list of safety precautions should be followed
when towing your generator:
Avoid sudden stops and starts.This can cause skidding,
or jack-knifing. Smooth, gradual starts and stops will
improve towing.
CAUTION - FOLLOWTOWING REGULATIONS
■
■
Avoid sharp turns.
Check with your local county or state safety towing
regulations, in addition to meeting Department of
Transportation (DOT) SafetyTowing Regulations, before
towing your generator.
Trailer should be adjusted to a level position at all times
when towing.
■
■
Raise and lock trailer wheel stand in up position when
transporting.
■
■
■
ALWAYS shutdown engine before transporting.
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.
Drain fuel from generator fuel tank before towing.
If generator is mounted on a trailer, make sure trailer
complies with all local and state safety transportation
laws. Follow the listed Towing & Transporting Safety
guidelines for basic towing techniques.
■
Place support blocks underneath the trailer’s bumper to
prevent tipping, while parked.
■
Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer "gross vehicle
weight rating.”
■
■
Avoid sharp turns to prevent rolling.
DO NOT transport generator with fuel in tank.
■
■
ALWAYS inspect the hitch and coupling for wear. NEVER
tow a trailer with defective hitches, couplings, chains etc.
Check the tire air pressure on both towing vehicle and
trailer. Trailer tires should be inflated to 50 psi cold.
Also check the tire tread wear on both vehicles.
For more saftey tips, see the trailer saftey
guidelines section in this manual.
■
■
■
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.
PAGE 14 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11) — PAGE 15
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DCA-15SPXU4 — INSTALLATION
Figure 2.Typical Generator Grounding Application
PAGE 16 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — INSTALLATION
Outdoor Installation
Generator Grounding
Install the generator in a area that is free of debris, To guard against electrical shock and possible damage to
bystanders, and overhead obstructions. Make sure the the equipment, it is important to provide a good EARTH
generator is on secure level ground so that it cannot slide or ground.
shift around. Also install the generator in a manner so that
Article 250 (Grounding) of the National Electrical Code (NEC)
the exhaust will not be discharged in the direction of nearby
provides guide lines for proper grounding and specifies that
homes.
the cable ground shall be connected to the grounding system
The installation site must be relatively free from moisture of the building as close to the point of cable entry as
and dust. All electrical equipment should be protected from practical.
excessive moisture. Failure to do will result in deterioration
of the insulation and will result in short circuits and grounding.
grounding requirements:
NEC articles 250-64(b) and 250-66 set the following
Foreign materials such as dust, sand, lint and abrasive
1. Use one of the following wire types to connect the
materials have a tendency to cause excessive wear to
generator to earth ground.
engine and alternator parts.
a. Copper - 10 AWG (5.3 mm2) or larger.
b. Aluminum - 8 AWG (8.4 mm2) or larger.
CAUTION - EXHAUST HAZARD
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.
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.
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.
When connecting the generator
to any buildings electrical
system ALWAYS consult with
a licensed electrician.
NOTE
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.
1
DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11) — PAGE 17
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DCA-15SPXU4 — GENERAL INFORMATION
Open Delta Excitation System
DCA-15SPXU4Whisperwatt™ Series Familiarization
Generator
The generator is equipped with the state of the art "Open-
Delta" excitation system. The open delta system consist of
an electrically independent winding wound among stationary
windings of the AC output section.
This MQ Power generator is a 15 kW generator (Figure 3)
that is designed as a high quality portable (requires a trailer
for transport) power source for telecom sites, lighting
facilities, power tools, submersible pumps and other industrial
and construction machinery.
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.
Generator Control Panel
The “Engine Operating Panel” is provided with the following:
■
Warning Lamp Unit
When a heavy load, such as a motor starting or a short
circuit occurs, the automatic voltage regulator (AVR)
switches the configuration of the open delta to the series
connection of B to C.This has the effect of adding the voltages
of each phase to provide higher excitation to the exciter
section and thus better voltage response during the
application of heavy loads.
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Preheat Lamp
Oil Pressure Alarm Lamp
WaterTemperature Alarm Lamp
Battery Charging Alarm Lamp
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■
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Speed Control Switch
Frequency Meter (Hz)
AC Ammeter (Amps)
The connections of the AVR to the AC output windings are
for sensing only. No power is required from these windings.
AC Voltmeter (Volts)
Voltage Regulator
The open-delta design provides virtually unlimited excitation
current, offering maximum motor starting capabilities. The
excitation does not have a "fixed ceiling" and responds
according the demands of the required load.
Starter Switch
Hour Meter
3-Pole, 70 amp Main Circuit Breaker
1-Pole, 20 amp Circuit Breaker (for GFCI)
1-Pole, 30 amp Circuit Breaker (for L5-30R)
2-Pole, 30 amp Circuit Breaker (for L6-30R)
2-Pole, 50 amp Circuit Breaker (for CS6369)
“Control Box” (located behind the Gen. Control Panel)
Engine
The DCA-15SPXU4 is powered by a 4 cylinder, water cooled,
Kubota Model V2203-M diesel engine. This engine is
designed to meet every performance requirement for the
generator. Reference Table 1 for engine specifications.
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Automatic Voltage Regulator
CurrentTransformer
Over-Current Relay
Voltage Rectifer
In keeping with MQ Power's policy of constantly improving
its products, the specifications quoted herein are subject to
change without prior notice.
Starter Relay
Electric Governor System
The electric governor system controls the RPMs of the en-
gine. When the engine demand increases or decreases, the
governor system regulates the frequency variation to .25%.
Output Terminal Panel
The “Output Terminal Panel” is provided with the following:
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Three output terminal lugs (1Ø power)
1-Phase OutputTerminal
Extension Cables
When electric power is to be provided to various tools or
loads at some distance from the generator, extension cords
are normally used. Cables should be sized to allow for
distance in length and amperage so that the voltage drop
between the generator and point of use (load) is held to a
minimum. Use the cable selection chart (Table 6) as a guide
for selecting proper extension cable size.
120/240V output receptacle (CS-6369), 50A
120 output receptacle (5-20R)GFCI, 20A
120V output receptacle (L5-30R), 30A
240V output receptacle,(L6- 30R) 30A
GroundTerminal (for G.F.C.U)
Battery Charger (Optional)
Water Heater (Optional)
PAGE 18 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — MAJOR COMPONENTS
Table 4. Generator Major Components
ITEM NO.
DESCRIPTION
Air Filter Assembly
1
2
3
4
5
6
7
8
9
Muffler Assembly
Engine and Radiator Assembly
Generator Assembly
Figure 3. Major Components
Battery Assembly
Fuel Tank Assembly
Generator Control Panel Assembly
Output Receptacle Assembly
Output Terminal Assembly
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DCA-15SPXU4 — GENERATOR CONTROL PANEL
4
1
2
3
OIL PRESS.
BATT. LOW LEVEL PREHEAT LAMP
WATER TEMP.
A
HZ
V
5
6
7
8
19
18
INCREASE
DECREASE
17
16
9
N
U
V
14
11
10
12
13
15
Figure 4. Generator Control Panel
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DCA-15SPXU4 — GENERATOR CONTROL PANEL
The definitions below describe the controls and functions of
the Generator Control Panel (Figure 4).
C. Preheat – Use this position before starting during
cold weather operating conditions. Observe the Preheat
Lamp for indication of the proper time for starting the
engine.
1. Frequency Meter – Indicates the output frequency in
hertz (Hz). Normally 60 Hz.
2. AC Ammeter – Indicates the amount of current the load
is drawing from the generator per leg selected by the
ammeter phase-selector switch.
D. Start – This position starts the engine, and when
released will automatically return to the run position.
8. Voltage Regulator Control – Allows 15% manual
3. ACVoltmeter – Indicates the output voltage present at
adjustment of the generator’s output voltage.
the U,O, and V OutputTerminal Lugs.
9. CS6369 Receptacle – Provides 240/120 VAC output
4. EngineWarning Lamp Module – This module displays
(50 amps max).
the following engine failures:
10. L6-30R Receptacle – Provides 240 VAC output (30
A. Pre-Heat Lamp – As the engine cranks, this lamp
will illuminate to indicate automatic preheating of the
engine. When the lamp turns off, the engine has been
preheated.
amps max).
11. L5-30R Receptacle – Provides 120 VAC output (30
amps max).
12. GFCI Receptacle – Provides 120VAC output (20 amps
B. Water Temperature Alarm Lamp – This lamp
indicates when the emergency shutdown system has
stopped the engine for abnormally high water
temperature(234 deg. F).
max).
13. AC Circuit Breaker - This two-pole, 50A breaker is
provided to protect the CS6369 receptacle from overload.
14. UNVTerminals - Connect load to these terminals AC
C. Oil Pressure Alarm Lamp – This lamp is on when
the starter switch is in the “ON” position and the engine
oil pressure is low(7.1 PSI). It will indicate when the
starter switch is in the “ON” position, before the engine
has been started, and if the emergency shutdown
system has stopped the engine.
load for 120/240 VAC single phase 60 Hz. output.
15. GFCI Ground Terminal - Use this terminal to ground
the generator
16. AC Circuit Breaker - This two-pole, 30A breaker is
provided to protect the auxillary receptacle (for L6-30R)
from overload.
D. Battery Charging Alarm Lamp – This lamp is ON
when the output voltage of the alternator drops tob an
unusual value. If this lamp indicates during operation,
the emergency shutdown system immediately operates
to stop the engine.
17. AC Circuit Breaker - This single-pole, 30A breaker is
provided to protect the auxillary receptacle (for L5-30R)
from overload.
18. AC Circuit Breaker -This single-pole, 20A GFCI breaker
is provided to protect the GFCI receptacle (5-20R) from
overload.
5. Hour Meter – Indicates the number of hours machine
has been in use.
6. Engine Speed Control Switch – This switch controls
19. AC Circuit Breaker – This three-pole, 70A main breaker
is provided to protect the the U,N, and V Output
Terminal Lugs from overload.
the speed of the engine from idle to high.
7. Starter Switch – This switch has four positions.
A. Stop – The switch should be in this position anytime
the unit is not in operation.This position allows removal
of the key.
B. Run – The switch should be in this position when
the unit is in operation.
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DCA-15SPXU4 — OUTPUT TERMINAL PANEL FAMILIARIZATION
OutputTerminal Panel
Output Terminal Familiarization
The OutputTerminal Panel (Figure 5) shown below is located The “OutputTerminal Panel ” (Figure 5) is provided with the
on the right-hand side (left from control panel) of the generator. following:
Lift up on the cover to gain access to receptacles and terminal
lugs.
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■
CS6369 receptacle 125/240V@ 50 amps
Circuit Breaker @ 50 amps (CS6369 receptacle)
120V GFCI receptacle @ 20 amps
L5-30R receptacle, 125V @ 30 amps
L6-30R receptacle, 240V @ 30 amps
Three Output Terminal Lugs ( U, N, V and Ground)
Figure 5. Output Terminal Panel
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DCA-15SPXU4 — OUTPUT TERMINAL PANEL FAMILIARIZATION
L5-30RTwist Lock 120VAC Receptacle
120VAC GFCI Receptacle
There is one L5-30R, 120 VAC 30 amp auxilliary twist-lock
receptacle (Figure 8) provided on the output terminal panel.
This120VAC, 20 amp GFCI (Duplex Nema 5-20R) receptacle
can be used anytime the generator is in operation. Remember
the load output (current) of the GFCI receptacle is dependent
on the load requirements of the U, N, and V output terminal
lugs.
Pressing the reset button resets the GFCI receptacle after
being tripped. Pressing the Test Button (See Figure 6) in
the center of the receptacle will check the GFCI function.
Both receptacles should be tested at least once a month.
Figure 8. 120VAC L5-30RTwist-Lock
Auxiliary Receptacle
L6-30RTwist Lock 240VAC Receptacle (Option)
There is one L6-30R, 240 VAC 30 amp auxilliary twist-lock
receptacle (Figure 9) provided on the output terminal panel.
Figure 6. G.F.C.I. Receptacle
Twist Lock DualVoltage 120/240VAC Receptacle (Option)
There is one CS-6369 120/240V, 50 amp auxilliary twist-lock
receptacle (Figure 7) provided on the output terminal panel.
This receptacle is protected by a 50 amp circuit breaker.
CS-6369
TWIST-LOCK
RECEPTACLE
Figure 9. 240VAC L6-30RTwist-Lock
Auxiliary Receptacle
Turn the voltage regulator control knob (Figure 10) on the
control panel to obtain the desired voltage.Turning the knob
clockwise will increase the voltage, turning the knob counter-
clockwise will decrease the voltage.
SINGLE-PHASE
120/240 VAC
50 AMP OUTPUT
Figure 7. 120/240V CS6369Twist-Lock
Auxiliary Receptacle
Figure 10.Voltage Regulator Control Knob
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DCA-15SPXU4 — OUTPUT TERMINAL PANEL FAMILIARIZATION
Connecting Loads
Loads can be connected to the generator by the Ouput
Terminal Lugs or the convenience receptacles (Figure 11).
Make sure to read the operation manual before attempting
to connect a load to the generator.
To protect the output terminals from overload, a
3-pole, 70A main circuit breaker is provided. Make sure to
switch ALL circuit breakers to the OFF position prior to
starting the engine.
Figure 11. Connecting Loads
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DCA-15SPXU4 — LOAD APPLICATION/MAXIMUM AMPERAGE
Single Phase Load
Motors and motor-driven
equipment draw much greater
current for starting than during
operation.
Always be sure to check the nameplate on the generator
NOTE
and equipment to insure the wattage, amperage, frequency
,
and voltage 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
starting system of the equipment.
An inadequate size connecting cable which cannot carry the
required load can cause a voltage drop which can burn out
the appliance or tool and overheat the cable. See Table 6.
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■
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.
If wattage is not given on the
equipment's
name
plate,
approximate wattage may be
determined by multiplying
nameplate voltage by the
nameplate amperage.
When connecting a fluorescent or mercury lamp, a
capacity of up to the generating set’s rated output (kW)
multiplied by 0.6 can be used.
When connecting an electric drill or other power tools,
pay close attention to the required starting current
capacity.
WATTS = VOLTAGE x AMPERAGE
The power factor of this generator is 0.8. See Table 5 below
when connecting loads.
When connecting ordinary power tools, a capacity of up to
the generating set’s rated output (kW) multiplied by 0.8 can
be used.
Table 5. Power Factor By Load
Type Of Load
Power Factor
DANGER - ELECTRICAL SYSTEM HAZARDS
Single-phase induction motors
0.4 - 0.75
Before connecting this generator to any building’s electrical
system, a licensed electrician must install an isolation
(transfer) switch. Serious damage to the building’s
electrical system may occur without this transfer switch.
Electric heaters, incandescent
lamps
1.0
0.4 - 0.9
1.0
Fluorescent lamps, mercury lamps
Electronic devices, communication
equipment
Generator Amperage
Common power tools
0.8
Table 7 describes the generator’s current output capability.
Table 6. Cable Selection (60 Hz, Single Phase Operation)
Load In Watts Maximum Allowable Cable Length
Current in
Amperes
Table 7. Generator Maximum Amps
At 100
Volts
At 200
Volts
#10 Wire
#12 Wire
#14 Wire
#16 Wire
2.5
5
300
600
600
1000 ft.
500 ft.
350 ft.
250 ft.
150 ft.
125 ft.
600 ft.
300 ft.
200 ft.
150 ft.
100 ft.
75 ft.
375 ft.
200 ft.
125 ft.
100 ft.
65 ft.
250 ft.
125 ft.
100 ft.
Rated Voltage
Maximum Amps
1200
1800
2400
3600
4800
7.5
10
15
20
900
Single Phase
120 Volt
1200
1800
2400
62.5 X 2 amps
50 ft.
Single Phase
240 Volt
62.5 amps
CAUTION: Equipment damage can result from low voltage.
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DCA-15SPXU4 — GAUGE READING/TERMINAL PANEL CONNECTIONS
UNVTerminal Output Voltages
Ammeter Gauge.
240/120V output voltages can be obtained using the Output The ammeter gauge (Figure 15) on the generator control panel
Terminal Lugs. Use the voltage regulator (VR) to either in- has been provided to help observe how much current (amps)
crease or decrease the selected voltage.
is being supplied to the load from the output terminal lugs,
GFCI receptacle or any auxulliary receptacles if installed.
1Ø 120 Output Terminal Lug Voltages
1. Connect the load wires to the OutputTerminal Lugs as
shown in (Figure 12)
Figure 15. AC Ammeter
The ammeter gauge will only
show a reading when the Output
Terminal Lugs or auxillary
NOTE
receptacles are connected to a
load.
Figure 12. Output Terminal Lugs
120VAC Single Phase Connections
1Ø 240 Output Terminal Lug Voltages
2. Turn the voltage regulator knob (Figure 13) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
1. Connect the load wires to the OutputTerminal Lugs as
shown in (Figure 16)
Figure 13. Voltage Regulator Knob (139V/240V)
3. Observe that the output voltage either increases or
decreases by monitoring the voltmeter (Figure 14)
reading.
Figure 16. Output Terminal Lugs
240VAC Single Phase Connections
2. Turn the voltage regulator knob (Figure 13) clockwise to
increase voltage output, turn counterclockwise to
decrease voltage output.
Figure 14. AC Voltmeter
PAGE 26 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — SETUP
Fuel Check
Circuit Breakers
To protect the generator from an overload, a 3-pole, 70 amp,
main circuit breaker is provided to protect the U,N,and V
OUTPUTTERMINALs from overload..In addition a two-pole,
50 amp CS6369 circuit breaker is provided to protect the
CS6369 receptacle from overload. Make sure to switch ALL
circuit breakers to the OFF position prior to starting the engine.
DANGER - EXPLOSION/FIRE HAZARDS
Fuel spillage on a hot engine can cause a fire or explosion.
If fuel spillage occurs, wipe up the spilled fuel completely
to prevent fire hazards. NEVER smoke around or near the
generator.
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 17) on the dipstick. See Table 8 for proper
selection of engine oil.
Refilling the Fuel System
CAUTION - REFUELINGTHE GENERATOR
ONLY properly trained personel who have read and
understand this section should refill the fuel tank system.
Figure 17. 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 Isuzu Engine Owner's Manual. Oil should be warm
before draining.
This generator has an internal fuel tank located inside the
trailer frame and may also be equipped with an optional
environmental fuel tank (Figure 18). ALWAYS fill the fuel
tanks with clean fresh #2 diesel fuel. DO NOT fill the fuel
tanks beyond their capacities.
Other types of motor oils may be substituted if they meet
the following requirements:
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.
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API Service Classification CC/SC
API Service Classification CC/SD
API Service Classification CC/SE
API Service Classification CC/SF
Table 8. Recommended Motor Oil
15
MQPOWER
WHISPERWATT
OIL: SAE
F
C
122
104
86
50
40
30
20
10
0
68
50
32
-14
-4
-10
-20
-30
-40
ENVIRONMENTAL
FUEL TANK
(OPTION)
-22
-40
Figure 18. Internal Fuel Tank System
1
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DCA-15SPXU4 — SETUP
Refueling Procedure:
WARNING - RESPIRATORY HAZARDS
NOTE
If generator is equipped with an
environmental fuel tank, reference
Figures 21 and 22.
Diesel fuel and its vapors are dangerous
to your health and the surrounding
environment. Avoid skin contact and/or
inhaling fumes.
3. NEVER overfill fuel tank – It is important to read the
fuel gauge when filling trailer fuel tank. DO NOT wait for
fuel to rise in filler neck (Figure 21).
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 (Figure 19).
CAUTION - REFUELINGTHE GENERATOR
ALWAYS place trailer on firm level ground before refueling
to prevent spilling and maximize the amount of fuel that
can be pumped into the tank.
Figure 21. Full Fuel Tank
CAUTION - REFUELINGTHE GENERATOR
DO NOT OVER-FILL fuel system. Leave room for fuel
expansion. Fuel expands when heated (Figure 22).
Figure 19. Only Fill on Level Ground
NOTE
ONLY! use #2 diesel fuel when
refueling.
Figure 22. Fuel Expansion
2. Remove fuel cap (internal fuel tank) and fill fuel tank
as shown Figure 20.
Figure 20. Fueling the Generator
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DCA-15SPXU4 — SETUP
Coolant (Antifreeze/Summer Coolant/Water)
Cleaning the Radiator
KUBOTA recommends antifreeze/summer coolant for use in
their engines, which can be purchased in concentrate (and
mixed with 50% demineralized water) or pre-diluted. See
the KUBOTA Engine Owner's Manual for further details.
The engine may overheat if the radiator fins become
overloaded with dust or debris. Periodically clean the radiator
fins with compressed air. Cleaning inside the machine is
dangerous, so clean only with the engine turned off and the
negative battery terminal disconnected.
Air Cleaner
WARNING - BURN HAZARDS
Periodic cleaning/replacement is necessary. Inspect it in
If adding coolant/antifreeze mix to the
radiator, DO NOT remove the radiator cap
until the unit has completely cooled.The
possibility of hot! coolant exists which
can cause severe burns.
accordance with the KUBOTA 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
KUBOTA Engine Owner's Manual.
Day-to-day addition of coolant is done from the recovery
tank. When adding coolant to the radiator, DO NOT remove
the radiator cap until the unit has completely cooled. See
Table 9 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.
The fan belt tension is proper if the fan belt bends 10 to 15
mm (Figure 23) when depressed with the thumb as shown
below.
Table 9. Coolant Capacity
Engine and Radiator
Reserve Tank
2.09 Gal. (7.9 liters)
.264 Gal (1.0 liters)
Figure 23. Fan Belt Tension
CAUTION - ROTATING PARTS
Operation FreezingWeather
When operating in freezing weather, be certain the proper
amount of antifreeze (Table 10) has been added.
NEVER place hands
near the belts or fan
while the generator set
is running.
Table 10. Anti-Freeze
Operating Temperatures
Freezing Point
Vol %
Anti-Freeze
°C
°F
50
-37
-34
When the antifreeze is mixed with
water, the antifreeze mixing ratio
must be less than 50%.
NOTE
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DCA-15SPXU4 — SETUP
Battery
When connecting battery do the following:
This unit is of negative ground DO NOT connect in reverse. 1. NEVER connect the battery cables to the battery
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.
terminals when the ignition switch is in the ON position
2. Place a small amount of battery terminal treatment
compound around both battery terminals.This will ensure
a good connection and will help prevent corrosion around
the battery terminals.
DO NOT over fill. Check to see whether the battery cables
are loose. Poor contact may result in poor starting or
malfunctions. Always keep the terminals firmly tightened.
Coating the terminals with an approved battery terminal
treatment compound. Replace battery with only
recommended type battery.
If the battery cable is connected
incorrectly, electrical damage to the
NOTE
generator will occur. Pay close
attention to the polarity of the
battery when connecting the
battery.
The battery is sufficiently charged if the specific gravity of
the battery fluid is 1.28 (at 68° F). If the specific gravity
should fall to 1.245 or lower, it indicates that the battery is
dead and needs to be recharged or replaced.
CAUTION - BATTERY SERVICING SAFETY
Before charging the battery with an external electric source,
be sure to disconnect the battery cables.
Inadequate battery connections may cause poor starting
of the generator, and create other malfunctions.
Battery Cable Installation
ALWAYS be sure the battery cables (Figure 24) 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.
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 can cause corrision and damage the
alternator.
CAUTION - BATTERY SERVICING SAFETY
ALWAYS disconnect the negative terminal FIRST and
reconnect negative terminal LAST.
Wiring
Inspect the entire generator for bad or worn electrical wiring
or connections. If any wiring or connections are exposed
(insulation missing) replace wiring immediately.
Piping and Hose Connection
Inspect all piping, oil hose, and fuel hose connections for
wear and tightness.Tighten all hose clamps and check hoses
for leaks.
If any hose (fuel or oil) lines are defective replace them
immediately.
Figure 24. Battery Connections
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DCA-15SPXU4 — GENERATOR START-UP PROCEDURE
Before Starting
Start-up Procedure
1. Set the Speed Control Switch to the START/IDLE position
CAUTION - LETHAL EXHAUST HAZARD
(Figure 27).
The engine's exhaust contains harmful emissions.
ALWAYS have adequate ventilation when operating.
Direct exhaust away from nearby personnel.
WARNING - STARTINGTHE GENERATOR
NEVER! manually start the engine with the main, GFCI
or auxiliary circuit breakers in the ON (closed) position.
Figure 27. Speed Control Switch (START/IDLE)
1. Place the main, G.F.C.I., and aux. circuit breakers
2. Insert the ignition key into the ignition switch. Turn the
key clockwise to the PRE-HEAT position (Figure 28A)
and observe the Pre-Heat Lamp. When the Pre-Heat
Lamp has turned off, continue turning the ignition key
clockwise to the START position (Figure 28B).When the
engine starts, release the key. If engine fails to start
within 10 seconds, wait 30 seconds and repeat this step.
(Figure 25) in the OFF position prior to starting the engine.
Figure 25. Main, GFCI, and Auxillary
Circuit Breakers (OFF)
A
B
2. Connect the load to the receptacles or the output
terminal lugs as shown in Figure 11. These load
connection points can be found on the output terminal
panel and the output terminal panel’s hard wire hookup
panel.
Figure 28. Ignition Switch
3. Once the engine starts, let it engine run for 1-2 minutes.
Listen for any abnormal noises. If any abnormalities
exists shutdown the engine and correct the problem.
3. Tighten terminal nuts securely to prevent load wires from
slipping out.
4. The generator's frequency meter (Figure 29) should be
4. Close all engine enclosure doors (Figure 26).
displaying the 60 cycle output frequency in HERTZ.
Figure 29. Frequency Meter (Hz)
Figure 26. Engine Enclosure Doors
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DCA-15SPXU4 — GENERATOR START-UP PROCEDURE
5. Set the Speed Control Switch to the RUN position
(Figure 30).
8. Place the main, GFCI, and aux. circuit breakers in the
ON position (Figure 34).
Figure 30. Speed Control Switch (RUN)
6. The ammeter (Figure 31) 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 34. Main, GFCI, and Aux.
Circuit Breakers (ON)
9. Observe the generator's ammeter (Figure 35) 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 31. Ammeter (No Load)
Figure 35. Ammeter (Load)
10. The generator will run until manually stopped or an
abnormal condition occurs.
7. The generator's AC-voltmeter (Figure 32) will display the
generator’s output in VOLTS. If the voltage is not within
the specified tolerance, use the voltage adjustment
control knob (Figure 33) to increase or decrease the
desired voltage.
Figure 32.Voltmeter
Figure 33.Voltage Adjust Control Knob
PAGE 32 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — GENERATOR SHUT-DOWN PROCEDURES
Emergency Shutdown Procedure
WARNING - SHUTTING DOWNTHE GENERATOR
1. Turn the ignition key counter-clockwise to the STOP
position. When the engine has stopped, remove key.
Place key in a safe place where it will not be lost.
NEVER stop the engine suddenly except in an emergency.
Normal Shutdown Procedure
2. Place both the main, GFCI, and aux. circuit breakers
To shutdown the generator use the following procedure:
as shown in Figure 25 to the OFF position.
1. Place both the main, GFCI, and aux. circuit breakers
as shown in Figure 25 to the OFF position.
2. Set the Speed Control Switch to the START/IDLE position
as shown in Figure 27 and let the engine cool for 3-5
minutes with no load applied.
3. Turn the ignition key counter-clockwise to the STOP
position. When the engine has stopped, remove key.
Place key in a safe place where it will not be lost.
4. Inspect entire generator for any damage or loosening of
components that may have occured during operation.
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DCA-15SPXU4 — MAINTENANCE
10 Hrs
DAILY
250 Hrs
500 Hrs
1000 Hrs
TABLE 11. INSPECTION/MAINTENANCE
Check Engine Fluid Levels
Check Air Cleaner
X
X
X
X
X
X
Check Battery Acid Level
Check Fan Belt Condition
Check for Leaks
Check for Loosening of Parts
1
Replace Engine Oil and Filter *
X
X
Clean Air Filter
ENGINE
Check Fuel Filter/Water Seperator Bowl
Clean Unit, Inside and Outside
Change Fuel Filter
X
X
X
X
Clean Radiator and Check Coolant Protection Level*2
3
Replace Air Filter Element *
X
4
Check all Hoses and Clamps *
X
X
Clean Inside of Fuel Tank
Measure Insulation Resistance Over 3M ohms
Check Rotor Rear Support Bearing
X
GENERATOR
X
*1 Replace engine oil anf filter at 100 hours, first time only.
*2 Add "Supplemental Coolant Addatives (SCA'S)" to recharge the engine coolant.
*3 Replace primary air filter element when restriction indicator shows a vaccum of 625 mm (25 in. H20).
*4 If blowby hose needs to be replaced, ensure that the slope of the bloby hose is at least a 1/2 inch per foot, with
no sags or dips that could collect moisture and/or oil.
Service Daily
General Inspection
If the engine is operating in very dusty or dry grass
conditions, a clogged air cleaner will result.This can lead to
a loss of power, excessive carbon buildup in the combustion
chamber and high fuel consumption. Change air cleaner
more frequently if these conditions exists.
Prior to each use, the generator should be cleaned and
inspected for deficiencies. Check for loose, missing or
damaged nuts, bolts or other fasteners. Also check for fuel,
oil, and coolant leaks. Use Table 11 as a general engine
maintenance guideline (Refer to the Engine Instruction
Manual).
Fuel Addition
Air Cleaner
Add diesel fuel (the grade may vary according to season
and locations).
Every 250 hours: Remove air cleaner element and clean the
heavy duty paper element with light spray of compressed
air. Replace the air cleaner as needed.
RemovingWater from the FuelTank
After prolonged use, water and other impurities accumulate
in the bottom of the tank. Occasionally inspect the fuel
tank for water contamination and drain the contents if
required.
Air Cleaner with Dust Indicator (If Equipped)
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 needs changing or service. After changing the
air element, press the dust indicator button to reset the
indicator.
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.
PAGE 34 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — MAINTENANCE
Air Removal
Flushing Out Radiator and Replacing Coolant
If air enters the fuel injection system of a diesel engine,
starting becomes impossible. After running out of fuel, or
after disassembling the fuel system, bleed the system
according to the following procedure. See the KUBOTA
Engine Manual for details.
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.
Check hoses for softening and kinks. Check clamps for
signs of leakage.
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.
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.
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 17.
Tighten both cocks and replace the overflow tank.
Replace with coolant as recommended by the engine
manufaturer.
Close radiator cap tightly.
Replacing Oil Filter
WARNING - BURN HAZARDS
Remove the old oil filter.
Apply a film of oil to the gasket on the new oil filter.
Install the new oil filter.
Allow engine to cool when flushing out
radiator. Flushing the radiator while hot
could cause serious burns from water or
steam.
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.
Generator Storage
Cleaning the Fuel Strainer
For longe term storage of the generator the following is
recommended:
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.
Fill the fuel tank completely. Treat with a fuel stabilizer
if necessary.
Completely drain the oil from the crankcase and refill if
necessary with fresh oil.
Replacing Fuel Filter
Clean the entire generator, internal and external.
Cover the generating set and store in a clean, dry place.
Disconnect the battery.
Replace the fuel filter cartridge with new one every 500
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.
Make sure engine coolant is at proper level.
If generator is mounted on a trailer, jack trailer up and
place on blocks so tires do not touch the ground or block
and completely remove the tires.
Vent any air.
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DCA-15SPXU4 — MAINTENANCE
Jacket Water Heater and Internal Battery Charger
120VAC Input Receptacles (OPTIONAL)
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.
This generator can be optionally equipped with two 120VAC,
20 amp input receptacles located on the output terminal
panel.
The purpose of these receptacles is to provide power via
commercial power to the jacket water heater and internal
battery charger.
To ensure adequate starting
capability, always have power
applied to the generator's
internal battery charger.
NOTE
These receptacles will ONLY function when commercial
power has been supplied to them (Figure 36). To apply
commercial power to these receptacles, a power cord of
adequate size will be required (See Table 6).
When using the generator in hot climates there is no reason
to apply power to jacket water heater. However, if the
generator will be used in cold climates it is always a good
idea to apply power to the jacket water heater at all times.To
apply power to the jacket water heater simply apply power to
the jacket water heater receptacle via commercial power
using an power cord of adequate size.
Figure 36. Battery Charger &
JacketWater Heater Power Connections
PAGE 36 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 —TRAILER MAINTENANCE
Brakes
Hydraulic Surge Brakes
Trailer brakes should be inspected the first 200 miles of Hydraulic surge brakes (Figure 37) should not require any
operation. This will allow the brake shoes and drums to seat special attention with the exception of routine maintenance
properly. After the first 200 mile interval, inspect the brakes such as shoe and lining replacement. Brake lines should be
every 3,000 miles. If driving over rough terrain, inspect the periodically checked for cracks, kinks, or blockage.
brakes more frequently.
Figure 37 displays the major hydraulic surge brake
components that will require inspection and maintenance.
Please inspect these components as required using steps 1
through 8 and Table 12 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 37. 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.
Hydraulic surge braking requires the installation of an actuator
at the tongue of the trailer. Remember the surge or push of
the trailer toward the tow vehicle automatically synchronizes
the trailer brakes with the tow vehicle brakes. As the trailer
pushes against the tow vehicle the actuator telescopes
together and applies force to the master cylinder, supplying
hydraulic pressure to the trailer brakes.
6. Adjust, rotate the star wheel in the opposite direction
until the wheel rotates freely with slight lining drag.
7. Replace the adjusting hole cover and lower the trailer to
the ground.
Periodically check and test the surge “actuator” to make
sure that it is functioning correctly. Never use an undersize
actuator.
8. Repeat steps 1 through 7 on the remaining brakes.
Table 12. Hydraulic Brake Troubleshooting
Symptom
Possible Cause
Solution
Repair or replace.
Reburnish or replace.
Correct weight.
No Brakes
Brake line broken or kinked?
Brake lining glazed?
Trailer overloaded?
Weak Brakes or Brakes Pull to
One Side
Brake drums scored or grooved?
Tire pressure correct?
Machine or replace.
Inflate all tires equally.
Match tires.
Tires unmatched on the same axle?
Brake components loose, bent or broken?
Brake drums out-of-round?
System lubricated?
Replace components.
Replace.
Locking Brakes
Noisy Brakes
Lubricate.
Brake components correct?
Replace and correct.
Brake lining thickness incorrect or not
adjusted correctly?
Install new shoes and
linings.
Dragging Brakes
Replace rubber parts
fill with dot 4 fluid.
Enough brake fluid or correct fluid?
1
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DCA-15SPXU4 —TRAILER MAINTENANCE
Tires/Wheels/Lug Nuts
Suspension
Tires and wheels are a very important and critical The leaf suspension springs and associated components
components of the trailer. When specifying or replacing the (Figure 38) should be visually inspected every 6,000 miles
trailer wheels it is important the wheels, tires, and axle are for signs of excessive wear, elongation of bolt holes, and
properly matched.
loosening of fasteners. Replace all damaged parts
(suspension) immediately. Torqued suspension components
as detailed in Table 14.
CAUTION - EYESIGHT HAZARD
ALWAYS wear safety glasses when
removing or installing force fitted parts.
Failure to comply may result in serious
injury.
CAUTION - REPAIRINGTRAILERWHEELS
DO NOT attempt to repair or modify a wheel. DO NOT
install in inner tube to correct a leak through the rim. If the
rim is cracked, the air pressure in the inner
tube may cause pieces of the rim to
explode (break off) with great force and
cause serious eye or bodily injury.
Figure 38. Major Suspension Components
Table 14. Suspension Torque Requirements
TireWear/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.
Item
Torque (Ft.-Lbs.)
MIN-30 MAX-35
MIN-45 MAX-60
MIN-45 MAX-60
3/8" U-BOLT
7/16" U-BOLT
1/2" U-BOLT
Table 13 (Tire Wear Troubleshooting) will help pinpoint the
causes and solutions of tire wear problems.
SNUG FIT ONLY. PARTS MUST ROTATE FREELY.
LOCKING NUTS OR COTTER PINS ARE PROVIDED
TO RETAIN NUT-BOLT ASSEMBLY.
SHACKLE BOLT
SPRING EYE BOLT
SHOULDER TYPE
SHACKLE BOLT
MIN-30 MAX-50
PAGE 38 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 —TRAILER MAINTENANCE
Lug NutTorque 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 39). DO NOT
torque the wheel lug nuts all the way down.Tighten each
lug nut in 3 separate passes as defined by Table 15.
3. After first road use, retorque all lug nuts in sequence.
Check all wheel lug nuts periodically.
Table 15. Tire Torque Requirements
Wheel Size
First Pass
FT-LBS
Second Pass
FT-LBS
Third Pass
FT-LBS
12"
13"
14"
15"
16"
20-25
20-25
20-25
20-25
20-25
35-40
35-40
50-60
50-60
50-60
50-65
50-65
90-120
90-120
90-120
Figure 39. Wheel Lug Nuts
Tightening Sequence
NEVER use an pneumatic air
gun to tighten wheel lug nuts.
NOTE
1
DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11) — PAGE 39
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DCA-15SPXU4 — GENERATORWIRING DIAGRAM
Figure 40. Generator Wiring Diagram
PAGE 40 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 — ENGINEWIRING DIAGRAM
Figure 41. Engine Wiring Diagram
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DCA-15SPXU4 —TROUBLESHOOTING (ENGINE)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, useTable 16 shown below for diagnosis of the engine.If the problem cannot be remedied, consult our company's
business office or service plant.
TABLE 16. ENGINE TROUBLESHOOTING
SYMPTOM
POSSIBLE PROBLEM
No fuel?
SOLUTION
Replenish fuel.
Bleed system.
Air in the fuel system?
Water in the fuel system?
Fuel pipe clogged?
Remove water from fuel tank.
Clean fuel pipe.
Fuel filter clogged?
Clean or change fuel filter.
Excessively high viscosity of
fuel or engine oil at low
temperature?
Use the specified fuel or engine oil.
Use the specified fuel.
Tighten nut.
Fuel with low cetane number?
Fuel leak due to loose injection
pipe retaining nut?
Engine does not start.
Incorrect injection timing?
Fuel cam shaft worn?
Adjust.
Replace.
Injection nozzle clogged?
Injection pump malfunctioning?
Clean injection nozzle.
Repair or replace.
Seizure of crankshaft, camshaft,
piston, cylinder liner or bearing?
Repair or replace.
Compression leak from
cylinder?
Replace head gasket, tighten cylinder head bolt, glow plug and
nozzle holder.
Improper valve timing?
Piston ring and liner worn?
Excessive valve clearance?
Battery discharged?
Correct or replace timing gear.
Replace.
Adjust.
Charge battery.
Repair or replace.
Repair or replace.
Connect wiring.
Starter malfunctioning?
Key switch malfunctioning?
Wiring disconnected?
Starter does not run.
PAGE 42 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-15SPXU4 —TROUBLESHOOTING (ENGINE)
TABLE 16. ENGINE TROUBLESHOOTING (CONTINUED)
SYMPTOM
POSSIBLE PROBLEM
Fuel filter clogged or dirty?
Air cleaner clogged?
SOLUTION
Clean or change.
Clean or change.
Fuel leak due to loose injection
pipe retaining nut?
Tighten nut.
Repair or replace.
Adjust.
Injection pump malfunctioning?
Engine revolution is not smooth.
Incorrect nozzle opening
pressure?
Injection nozzle stuck or
clogged?
Repair or replace.
Fuel over flow pipe clogged?
Governor malfunctioning?
Excessive engine oil?
Clean.
Repair.
Reduce to the specified level.
Repair or replace.
Piston ring and liner worn or
stuck?
Either white or blue exhaust gas
is observed.
Incorrect injection timing?
Deficient compression?
Overload?
Adjust.
Adjust top clearance.
Lessen the load.
Use the specified fuel.
Clean or change.
Clean or change.
Repair or replace the nozzle.
Adjust.
Low grade fuel used?
Fuel filter clogged?
Either black or dark gray
exhaust gas is observed.
Air cleaner clogged?
Deficient nozzle injection?
Incorrect injection timing?
Engine's moving parts seem to
be seizing?
Repair or replace.
Deficient output.
Uneven fuel injection?
Repair or replace the injection pump.
Repair or replace the nozzle.
Deficient nozzle injection?
Replace head gasket, tighten cylinder head bolt, glow plug and
nozzle holder.
Compression leak?
1
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DCA-15SPXU4 —TROUBLESHOOTING (GENERATOR)
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a
breakdown, use Table 17 shown below for diagnosis of the generator. If the problem cannot be remedied, consult our
company's business office or service plant.
TABLE 17. GENERATOR TROUBLESHOOTING
SYMPTOM
No Voltage Output
POSSIBLE PROBLEM
AC Voltmeter defective?
SOLUTION
Check output voltage using a voltmeter.
Check wiring and repair.
Is wiring connection loose?
Is AVR defective?
Replace if necessary.
Defective Rotating Rectifier?
Defective Exciter Field?
Is engine speed correct?
Is wiring connections loose?
Defective AVR?
Check and replace.
Check for 17.3 ohms across J & K on CN1
Turn engine throttle lever to "High".
Check wiring and repair.
Low Voltage Output
Replace if necessary.
High Voltage Output
Is wiring connections loose?
Defective AVR?
Check wiring and repair.
Replace if necessary.
Circuit Breaker Tripped
Short Circuit in load?
Over current?
Check load and repair.
Confirm load requirements and reduce.
Check and replace.
Defective circuit breaker?
Over current Relay actuated?
Confirm load requirement and replace.
PAGE 44 — DCA-15SPXU4— OPERATION MANUAL — REV. #0 (03/31/11)
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DCA-10SPX4 —TROUBLESHOOTING (PRE-HEAT LAMP CODES)
When the Emergency/Malfunction Diagnosis Function has been activated, it stops the engine and flashes the pre-heat
lamp to indicate the cause of the malfunction with its flashing patterns. The flashing patterns and countermeasures are
shown below. The patterns consist of combinations of one or more long flashes and one or more short flashes.
TABLE 18. FAILURE DIAGNOSIS LAMP CODE
LOCATION OF FAULT
POSSIBLE FAULT REASONS
INDICATION
SUGGESTED REPAIRS
115% or more the rated revolution
speed
Engine Over Speed
1 Long 1 Short
Engine stops at 49kPa or more
(oil pressure lamp on)
Low Oil Pressure
Insufficient Charge
Rotation Sensor
Solenoid
1 Long 2 Short
Charging generator has no voltage 1 Long 3 Short
Defective sensor, disconnection,
2 Long 1 Short
Check all of the connections. If
connections are sound, contact the
Service Department for repairs.
short circuit
Disconnection, short circuit
Disconnection
2 Long 2 Short
2 Long 4 Short
2 Long 5 Short
Water Temperature
Sensor
Short circuit
Charging Generator
Terminal
Disconnection
2 Long 6 Short
2 Long 7 Short
Over Voltage
VCC at 18V or more
Make sure that routine service has
been performed, and check thermo
switch. If the problem persists,
contact the Service Department for
repairs.
High Water
Temperature
Engine stops at 115C or more
1 Long 4 Short
1
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PARTS AND OPERATION MANUAL
OPERATION MANUAL
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
UNITED STATES
Multiquip Corporate Office
MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: [email protected]
Tel. (800) 421-1244
Fax (800) 537-3927
800-427-1244
310-537-3700
Fax: 800-672-7877
Fax: 310-637-3284
Service Department
Warranty Department
800-421-1244
310-537-3700
Fax: 310-537-4259
Fax: 310-943-2238
800-421-1244
310-537-3700
Fax: 310-537-1173
Technical Assistance
800-478-1244
MEXICO
UNITED KINGDOM
MQ Cipsa
Multiquip (UK) Limited Head Office
Carr. Fed. Mexico-Puebla KM 126.5
Momoxpan, Cholula, Puebla 72760 Mexico
Contact: [email protected]
Tel: (52) 222-225-9900
Unit 2, Northpoint Industrial Estate, Tel: 0161 339 2223
Fax: (52) 222-285-0420 Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: [email protected]
Fax: 0161 339 3226
CANADA
Multiquip
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: [email protected]
Tel: (450) 625-2244
Tel: (877) 963-4411
Fax: (450) 625-8664
© COPYRIGHT 2011, MULTIQUIP INC.
Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property
of their respective owners and used with permission.
This manual MUST accompany the equipment at all times.This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.
Your Local Dealer is:
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