MULTIQUIP Whisperwatt TLG-12SPX4 Guide

PARTS AND OPERATION MANUAL
OPERATION AND PARTS MANUAL
Revision #1 (12/17/09)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALLTIMES.
WHISPERWATTTM SERIES
MODEL TLG-12SPX4
60 Hz GENERATOR

PAGE 2 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
Diesel engine exhaust and some of

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 3
1
NOTE PAGE

PAGE 4 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TABLE OF CONTENTS
Specifications are subject to
change without notice.
NOTE
MQ POWER TLG-12SPX4MQ POWER TLG-12SPX4
MQ POWER TLG-12SPX4MQ POWER TLG-12SPX4
MQ POWER TLG-12SPX4
WHISPERWHISPER
WHISPERWHISPER
WHISPERWW
WW
WAA
AA
ATTTT
TTTT
TTTMTM
TMTM
TM
GENERATORGENERATOR
GENERATORGENERATOR
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 ................................................................. 15-16
General Information ........................................................ 17
Major Components ......................................................... 18
Generator Control Panel ............................................ 19-20
Output Terminal Panel Familiarization ........................ 21-23
Load Application/Max Amperage .................................... 24
Setup ......................................................................... 25-28
Generator Start-up Procedure ................................... 29-30
Generator Shut-Down Procedure .................................... 31
Maintenance (Engine) ................................................ 32-33
Maintenance (Trailer) ................................................. 34-36
Generator Wiring Diagram ............................................... 37
Engine Wiring Diagram ................................................... 38
Troubleshooting (Engine) ........................................... 39-40
Troubleshooting (Generator) ............................................ 41
Explanation of Code in Remarks Column ....................... 42
Suggested Spare Parts .................................................. 43
COMPONENT DRACOMPONENT DRA
COMPONENT DRACOMPONENT DRA
COMPONENT DRAWINGSWINGS
WINGSWINGS
WINGS
Generator Assembly .................................................. 44-45
Control Panel Assembly ............................................ 46-49
Engine and Radiator Assembly ................................. 50-53
Battery Assembly ...................................................... 54-55
Muffler Assembly ...................................................... 56-57
Fuel Tank Assembly .................................................. 58-59
Enclosure Assembly ................................................. 60-63
Rubber Seals Assembly ............................................ 64-65
Nameplate and Decals .............................................. 66-69
Terms and Condition of Sale — Parts ............................ 70

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 5
1
PARTS ORDERING PROCEDURES
www.mqpower.com
Ordering parts has never been easier!
Choose from three easy options:
WE ACCEPT ALL MAJOR CREDIT CARDS!
When ordering parts, please supply:
RDealer Account Number
RDealer Name and Address
RShipping Address (if different than billing address)
RReturn Fax Number
RApplicable Model Number
RQuantity, Part Number and Description of Each Part
RSpecify Preferred Method of Shipment:
UPS/Fed ExDHL
NPriority OneTr u c k 
NGround
NNext Day
NSecond/Third Day
If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.
com.
To obtain an MQ Account, contact you
r
District Sales Manager for more information.
Order via Internet (Dealers Only):
Order parts on-line using Multiquip’s SmartEquip website!
NView Parts Diagrams
NOrder Parts
NPrint Specification Information
Note: Discounts Are Subject To Change
Goto www.multiquip.com and click on
Order Parts to log in and save!
Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*
Order via Fax (Dealers Only):
All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)
Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*
Order via Phone: Domestic (US) Dealers Call:
1-800-427-1244
Best Deal!
International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.
Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.
Note: Discounts Are Subject To Change
Effective:
January 1st, 2006
NOTICE
All orders are treated as Standard Orders and will
ship the same day if received prior to 3PM PST.

PAGE 6 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TLG-12SPX4 — SPECIFICATIONS
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TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 7
1
TLG-12SPX4 — DIMENSIONS (TOP, SIDE AND FRONT)
Figure 1. Dimensions
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PAGE 8 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
This Owner's Manual has been
developed to provide complete
instructions for the safe and
efficient operation of the
MQ Power Generator.
Before using this generator,
ensure that the operating individual has read and
understands all instructions in this manual.
Safety precautions should be followed at all times when
operating this equipment. Failure to read and understand the
Safety Messages and Operating Instructions could result in
injury to yourself and others.
FOR YOUR SAFETY AND THE 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 ".
NOTE
TLG-12SPX4 — SAFETY MESSAGE ALERT 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.
You WILL be KILLED or SERIOUSLY injured if you
do not follow directions.
You COULD be KILLED or SERIOUSLY injured if
you do not follow directions.
You CAN be injured if you do not follow directions
Gasoline 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.
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.
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.
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.
WARNING
DANGER
CAUTION
WARNING - LETHAL EXHAUST GASES
WARNING - BURN HAZARDS
WARNING - EXPLOSIVE FUEL
During operation of this generator, there
exists the possibility of electrocution,
electrical shock or burn, which can cause
severe bodily harm or even DEATH!
DANGER - ELECTROCUTION HAZARDS

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 9
1
TLG-12SPX4 — SAFETY MESSAGE ALERT SYMBOLS
ALWAYS place the engine ON/OFF
switch (MPEC) in the OFF/RESET
position when the generator is not in use.
ALWAYS wear approved respiratory
protection.
ALWAYS wear approved eye and
hearing protection.
Other important messages are provided throughout this
manual to help prevent damage to your generator, other
property, or the surrounding environment.
This generator, other property, or
the surrounding environment
could be damaged if you do not
follow instructions.
NOTE
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.
CAUTION - OVER-SPEED CONDITIONS
CAUTION - ACCIDENTAL STARTING
CAUTION - RESPIRATORY HAZARDS
CAUTION - SIGHT AND HEARING HAZARDS
CAUTION - EQUIPMENT DAMAGE MESSAGES
NEVER operate equipment with covers,
or guards removed. Keep fingers , hands ,
hair and clothing away from all moving
parts to prevent injury.
WARNING - ROTATING PARTS
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.
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.
CAUTION - ENGINE LOAD (WET-STACKING)

PAGE 10 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TLG-12SPX4 — RULES FOR SAFE OPERATION
The following safety guidelines should always be used when
operating the generator.
General Safety:
■ DO NOT operate or service this
equipment before reading this entire
manual.
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.
■ NEVER operate this equipment without proper protective
clothing, shatterproof glasses, steel-toed boots and other
protective devices required by the job.
■ NEVER operate this equipment when not
feeling well due to fatigue, illness or taking
medicine.
■ NEVER operate this equipment under the influence or
drugs or alcohol.
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.
DANGER - READTHIS MANUAL!
■ ALWAYS wear proper respiratory (mask),
hearing and eye protection equipment when
operating the generator.
■ 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.
■ 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.
■ 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
or engine and may cause
injury to people.
Remember the generator's
engine gives off DEADLY
carbon monoxide gas.
■ NEVER touch the hot exhaust
manifold, muffler or cylinder.
Allow these parts to cool before
servicing engine or generators.
■ ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.
■ 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 the generator in an
explosive atmosphere or near
combustible materials. An explosion or
fire could result causing severe bodily
harm or even death.
■ 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.
DANGEROUS
GAS FUMES
Denyo

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 11
1
TLG-12SPX4 — RULES FOR SAFE OPERATION
■ ALWAYS be sure the operator is familiar with proper safety
precautions and operation techniques before using
generators.
■ NEVER leave the generator unattended, turn off engine when
unattended.
■ 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.
■ NEVER run engine without air cleaner. Severe engine damage
may occur.
■ NEVER change or adjust the engine speed which has been
set at the factory prior to shipping.
Power Cord Safety
■ NEVER let power cables or cords lay in wate r.
■ NEVER stand in water while AC power from the generators
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 power or extension cord
has been selected for the job See Table 6.
Grounding Safety
■ 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 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.
Maintenance Safety
■ NEVER lubricate components or attempt service on a running
machine.
■ 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.
■ Keep the machinery in proper running condition.
■ Fix damage to the machine immediately and replace any
broken parts immediately.
■ ALWAYS replace any worn or damaged warning decals.
■ 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.
■ 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.
■ Dispose of hazardous waste properly. Examples of potentially
hazardous waste are used motor oil, fuel and fuel filters.
■ DO NOT use food or plastic containers to dispose of
hazardous waste.
■ DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.
■ ALWAYS allow the machine a proper amount of time to
cool before servicing.
■ ALWAYS service air cleaner frequently to prevent engine
malfunction.
■ 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.

PAGE 12 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TLG-12SPX4 — RULES FOR SAFE OPERATION
Battery Safety
Use the following guidelines when handling the battery:
■ 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.
■■
■■
■ 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.
The risk of an explosion exists when performing service
on the battery. To avoid severe injury or DEATH:
■■
■■
■ 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.
DANGER - EXPLOSION HAZARDS
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.
■ 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.
■ 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.
■ 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.
WARNING - BURN HAZARDS

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 13
1
TLG-12SPX4 — RULES FOR SAFE OPERATION
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!
Emergencies
■ ALWAYS know the location of the
nearest
fire extinguisher .
■ 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.
DANGERDANGER
DANGERDANGER
DANGER
-
Electrocution HazardsElectrocution Hazards
Electrocution HazardsElectrocution Hazards
Electrocution 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!
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.
NEVER insert any objects into
the output receptacles during
operation. This is extremely
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 !
NEVER grab or touch a live
power cord with wet hands, the
possibility exist of electrical
shock, electrocution, and even
death!
ACCIRCUIT
BREAKER
ACCIRCUIT
BREAKER
OFF
OFF
22A
22A
120
120
V
20A
20A
120V
120V
OFF
OFF
ON
GA-2.9R
GA-2.9R
2900
DANGER
Using a generator indoors .CAN KILL YOU IN MINUTES
Generator exhaust contains carbon monoxide. This is
a posion you cannot see or smell
NEVER use inside a home
or garage, even if doors
and windows are open
ACCIRCUIT
BREAKER
ACCIRCUIT
BREAKER
OFF
OFF
22A
22A
120
V
20A
120V
OFF
ON
GA-2.9R
2900
ACCIRCUIT
BREAKER
ACCIRCUIT
BREAKER
OFF
OFF
22A
22A
120
V
20A
120V
OFF
ON
GA-2.9R
GA-2.9R
2900
Only use OUTSIDE and
far away from windows,
doors, and vents.
Avoid other generator hazards.
.READ MANUAL BEFORE USE
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.
DANGERDANGER
DANGERDANGER
DANGER -
Lethal Exhaust Gas HazardsLethal Exhaust Gas Hazards
Lethal Exhaust Gas HazardsLethal Exhaust Gas Hazards
Lethal Exhaust Gas Hazards

PAGE 14 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
Check with your local county or state safety towing
regulations, in addition to meeting Department of
Transportation (DOT) SafetyTowing Regulations , before
towing your generator.
CAUTION - FOLLOWTOWING REGULATIONS
■ 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 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.
■ Avoid sudden stops and starts.This can cause skidding,
or jack-knifing. Smooth, gradual starts and stops will
improve towing.
■ 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.
■ 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 support blocks underneath the trailer’s bumper to
prevent tipping, while parked.
■ Avoid sharp turns to prevent rolling.
■ DO NOT transport generator with fuel in tank.
Towing and Transporting 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.
The following list of safety precautions should be followed
when towing your generator:
■ ALWAYS shutdown engine before transporting.
■ 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.
■ Make sure the hitch and coupling of the towing vehicle
are rated equal to, or greater than the trailer "gross vehicle
weight rating.”
■ ALWAYS inspect the hitch and coupling for wear. NEVER
tow a trailer with defective hitches, couplings, chains etc.
■ Check the tire air pressure on both towing vehicle and
trailer. Trailer tires should be inflated to 50 psi cold.
Also check the tire tread wear on both vehicles.
■ ALWAYS 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.
■ DOT Requirements include the following:
 Connect and test electric brake operation.
 Secure portable power cables in cable tray with tie
wraps.
If your generator is trailer mounted, please
read the towing and safety requirements
listed below.
For more saftey tips, see the trailer saftey
guidelines section in this manual.
NOTE
TLG-12SPX4 — RULES FOR SAFE OPERATION

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 15
1
Figure 2.Typical Generator Grounding Application
TLG-12SPX4 — INSTALLATION

PAGE 16 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
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.
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.
When connecting the generator
to any buildings electrical
system ALWAYS consult with
a licensed electrician.
TLG-12SPX4 — INSTALLATION
NOTE
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.
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.
CAUTION - EXHAUST HAZARD

TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 17
1
TLG-12SPX4 — GENERAL INFORMATION
TLG-12SPX4 Whisperwatt™ Series Familiarization
Generator
The MQ Power Model TLG-12SPX4 is a 13 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.
Generator Control Panel
The “Engine Operating Panel” is provided with the following:
■■
■■
■
Warning Lamp Unit
■■
■■
■ Frequency Meter (Hz)
■■
■■
■ AC Ammeter (Amps)
■■
■■
■
AC Voltmeter (Volts)
■■
■■
■ Voltage Regulator
■■
■■
■ Ignition Switch
■■
■■
■ Hour Meter
■■
■■
■ Fuel Gauge
■■
■■
■ 3-Pole, 50 amp Main Circuit Breaker
■■
■■
■ “Control Box” (located behind the Gen. Control Panel)
■■
■■
■ Automatic Voltage Regulator
■■
■■
■ Current Transformer
■■
■■
■ Voltage Rectifer
■■
■■
■ Starter Relay
Output Terminal Panel
The “Engine Operating Panel” is provided with the following:
■■
■■
■ 120V output receptacle (5-20R) GFCI, 20A
■■
■■
■ 120V output receptacle (L5-30R), 30A
■■
■■
■ 240V output receptacle(L6-30R), 30A
■■
■■
■ 120/240V output receptacle (CS6369), 50A
■■
■■
■ Throttle Lever
■■
■■
■ Ground Terminal
Open Delta Excitation System
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.
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 to 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 "
fixed ceiling " and responds
according the demands of the required load.
Engine
The TLG-12SPX4 is powered by a 3 cylinder, water cooled,
Kubota Model D902 diesel engine .This engine is designed
to meet every performance requirement for the generator.
Reference Table 2 for engine specifications.
In keeping with MQ Power's policy of constantly improving
its products, the specifications quoted herein are subject to
change without prior notice.
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%.
Extension Cables
When electric power is to be provided to various tools or
loads at some distance from the generator, extension cords
are normally used. Cables should be sized to allow for
distance in length and amperage so that the voltage drop
between the generator and point of use (load) is held to a
minimum. Use the cable selection chart (Table 6) as a guide
for selecting proper extension cable size.

PAGE 18 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TLG-12SPX4 — MAJOR COMPONENTS
Figure 3. Major Components
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TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09) — PAGE 19
1
Figure 4. Generator Control Panel
TLG-12SPX4 — GENERATOR CONTROL PANEL

PAGE 20 — TLG-12SPX4— OPERATION AND PARTS MANUAL — REV. #1 (12/17/09)
TLG-12SPX4 — GENERATOR CONTROL PANEL
The definitions below describe the controls and functions of
the
Generator Control Panel (Figure 4).
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.
3. AC Voltmeter – Indicates the output voltage present at
the
Output Receptacles .
4. Voltage Regulator Control – Allows ±15% manual
adjustment of the generator’s output voltage.
5. Engine Warning Display Module – This module
displays the following engine failures:
A. Overheat Lamp – This lamp goes ON
when the coolant is over 239oF. If the
lamp goes ON during normal
operation of the generator, the
generator will immediately stop.
Check for possible trouble before
restarting engine.
B. Low Oil Pressure Lamp – During normal
operation of the generator this lamp
should remain OFF. After the oil
pressure rises after start-up, the
lamp will go OFF. This lamp goes
ON when the oil presure drops below
7.1 PSI.If this lamp is ever lit (ON) during normal
operation of the generator, the generator will
immediately shutdown. Check for possible trouble
before restarting engine.
C. Low Battery Fluid Lamp – This
lamp goes ON when the battery fails
to charge. If this lamp goes ON during
normal operation of the generator,
stop the engine and fill the battery
with distilled water to the
specified level.
D. Pre-Heat Lamp – This lamp
indicates when the engine is
ready for starting during cold
weather operating condition.
6. Hour Meter – Indicates the number of hours machine
has been in use.
7. Fuel Guage – Indicates the amount of fuel in the
Generator.
8. Ignition Switch – Insert ignition key into this switch to
start engine.
9. Throttle Lever – This knob controls the speed of the
engine.
10. Ground Terminal - Ground terminal for Output
Receptacles.
11. GFCI Receptacle – Provides 120 VAC output (20 amps
max).
12. Auxillary Receptacle (for L5-30R) – Provides 120 VAC
output (30 amps max).
13. Auxillary Receptacle (for L6-30R) – Provides 240 VAC
output (30 amps max).
14. Twist Lock Dual Voltage Receptacle (CS6369) –
Provides 120/240 VAC output (50 amps max).
18. Main Circuit Breaker – This three-pole, 50A main
breaker is provided to protect the the Output
Receptacles from overload.