Generac Power Systems 9592-3 User Manual
V
Part No. 98773
OWNER’S
Manual
Series Q-55G and Q-70G
AIR-COOLED
RECREATIONAL VEHICLE
GENERATORS
Model Nos. 9592-3 and 9593-3
Revision 1 (06/02/98)
C O R P ORATION
Printed in U.S.A.
GENERAL SAFETY RULES
THE MANUFACTURER SUGGESTS THAT THESE "RULES" FOR SAFE OPERATION BE COPIED AND
POSTED IN POTENTIAL HAZARD AREAS OF THE INDUSTRIAL VEHICLE. SAFETY SHOULD BE STRESSED
TO ALL OPERATORS AND POTENTIAL OPERATORS OF THIS EQUIPMENT.
Study these SAFETY RULES carefully before operating
or servicing applicable equipment. Become familiar
with this Owner's Manual and with your generator. Safe,
efficient and reiiable operation can only be achieved if
generator is properly installed, operated and main
tained. Many accidents are caused by failing to follow
simple and fundamental rules or precautions. The man
ufacturer suggests that these GENERAL SAFETY
RULES be copied and posted in potential hazard areas
of the industrial vehicle. Safety should be stressed to
all operators and potential operators of equipment.
The manufacturer cannot possibly anticipate every pos
sible circumstance that might involve a hazard. The
warnings in this Manual and on tags and decals affixed
to the unit are, therefore, not all-inclusive. If you use a
procedure, work method or operating technique
Generac does not specifically recommend, you must
satisfy yourself that it is safe for you and others. You
must also make sure the procedure, work method or
operating technique that you chose does not render the
generator to be unsafe.
• For fire safety, the industrial mobile generator must
be properly installed and maintained. Installation
must always remain in compliance with applicable
codes and standards. In addition, the generator
must be installed in conformance to the
manufacturer’s detailed installation instructions.
Following installation, nothing must be done that
might render the generator in noncompliance with
such codes, standards and instructions.
• The RV generator produces extremely high and
dangerous electrical voltages and can cause dan
gerous, and possibly fatal, electrical shock. Avoid
contact with bare wires, terminals, etc. while the
unit is running. If you must work around an operat
ing generator, stand on an insulated, dry surface to
reduce shock hazard.
• Never work on this equipment or handle any elec
trical device while standing in water, while barefoot,
or while hands or feet are wet. Dangerous electri
cal shock will result.
• Have the generator properly grounded (bonded)
during installation onto the vehicle, either by solid
mounting to the vehicle frame or chassis or by
means of an approved bonding conductor. DO
NOT disconnect the bonding conductor, if so
equipped. DO NOT reconnect the bonding conduc
tor to any generator part that might be removed or
disassembled during routine maintenance. If the
grounding conductor must be replaced, use only a
flexible conductor that is of No. 8 AWG copper wire
minimum.
• Inspect the generator periodically. Repair or re
place all damaged or defective parts immediately.
• In case of accident caused by electric shock, shut
down the source of electrical power down at once.
If this cannot be done, free victim from live conduc
tor. AVOID DIRECT CONTACT WITH THE VICTIM. Use a dry board, dry rope, or other non-con
ducting implement to free the victim from live con
ductor. If victim is unconscious, apply CPR (cardio
pulmonary resuscitation) and get medical help.
Inspect fuel system frequently for leaks or damage.
Repair or replace any damaged or leaking compo
nent immediately. Never attempt to change, alter
or modify the generator fuel system in any way that
might affect safety or compliance with applicable
codes and standards’.
The generator engine gives off DEADLY carbon
monoxide gas through its exhaust system. This
dangerous gas, if breathed in sufficient concentra
tions, can cause unconsciousness or even death.
This exhaust system must have been properly in
stalled, in strict compliance with applicable codes
and standards. Following installation, you must do
nothing that might render the system unsafe or in
non-compliance with such codes and standards.
The generator compartment must be completely
vapor sealed from vehicle interior. There must be
no possibility of exhaust fumes entering the vehicle
interior. Never operate this equipment with a leak
ing or defective exhaust system.
Never use the generator or any of its parts as a step.
Stepping on the unit can stress and break parts and
may result in dangerous operating conditions from
leaking exhaust gases, fuel leakage, oil leakage,
coolant leakage, etc.
Do not smoke around the generator. Wipe up any
fuel, oil and coolant spills immediately. Never leave
oily or fuel soaked rags in the generator compart
ment or on the generator itself. Keep the area
around the generator clean and free of debris.
Adequate ventilation is required to expel toxic
fumes and gasoline vapors from the generator com
partment. Do not alter the installation of this equip
ment in any manner that might obstruct air and
ventilation openings. Such openings must be kept
clear and unobstructed.
Keep hands, feet, clothing, etc., away from drive
belts, fans and other moving parts of this equip
ment. Never remove any drive belt or fan guards
while the unit is operating.
Some generators may use LP gas (propane) as a
fuel. LP gas is highly EXPLOSIVE. The gas is
heavier than air and tends to settle in low areas
where even the slightest spark can ignite the gas
and cause an explosion.
Before performing any maintenance on the gener
ator set, disconnect its battery cables to prevent
accidental start up. Disconnect the cable from the
battery post indicated by a NEGATIVE, MEG or (-)
first. Reconnect that cable last.
IDENTIFICATION RECORD
Please record the following information, from the generator DATA PLATE or information decai:
1. Modei Number
3. kW Rating,
5. Phase
______
r
NDIieL[
SERIES [
SERIALr
V
___________________
2. Serial Number____________________________
4. Rated Voltage,
6. Hertz
1 VO.TSI 1
1 *HPS| 1
1 WATTS 1 1
PHASE-1 HERT2-«0 RPM-VARIA8LE____________
CLASS r INSULATION AT 40*C CtXTINUOUS DUTY
FDR SERVICE CENTER LOCATIONS
CALL 800-333-1332 — 24 HOURS A DAY
GENERAC CORPORATION
VAUKESHA, WIS
U.S. AND FOREIGN PATENTS PENDING
MADE IN U.S.A.
__________
I -
TABLE OF CONTENTS
GENERAL SAFETY RULES.
IDENTIFICATION RECORD
READ THIS MANUAL THOROUGHLY
Operation and Maintenance............................................ 3
How to Obtain Service
GENERATOR FEATURES................................................ 4
GENERATOR FAMILIARIZATION
Generator Applicability.................................................... 5
Installation....................................................................... 5
Safety.............................................................................. 5
Generator AC Connection System
OPERATING INSTRUCTIONS
Generator Panel
Automatic Choke
Before Starting the Engine
Starting
Stopping the Generator
Applying Loads to Generator
Wattage Reference Guide
ADDITIONAL INFORMATION
Automatic Low Oil Pressure Shutdown
High Temperature Shutdown
Muffler Kits...................................................................... 9
Field Boost
Over-Voltage Protection
25-Hour Break in Period................................................10
25-Hour Check Up.........................................................10
Operation in High Grass or Brush
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inside cover
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10
SPECIFICATIONS
1
3
3
Generator Specifications..........................................11
Engine Specifications...............................................11
Fuel Requirements...................................................11
Engine Oil Requirements
.........................................
11
Optional LP Gas Fuel System..................................11
MAINTENANCE
Checking Engine Oil Level........................................12
Change Engine Oil....................................................12
Change Oil Filter.......................................................12
5
Engine Air Cleaner....................................................13
Clean Air Intake Screen............................................13
Engine Spark Plugs
6
6
7
7
7
7
8
Fuel Filter..................................................................13
MISCELLANEOUS MAINTENANCE
Spark Arrestor Mufflers.............................................14
Cleaning the Generator
Battery.......................................................................14
Major Service Manual
Drive Belts
................................................................14
Exercising the Generator
9
9
9
9
Out of Service Protection...........................................15
Return the Unit to Service after Storage
TROUBLESHOOTING.................................................16
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...............................................
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13
14
14
15
15
ELECTRICAL DATA....................................................17
REPAIR PARTS
..................................................
18 to 29
-2-
READ THIS MANUAL THOROUGHLY
If you don’t understand any portion of this manual,
contact Generac for a demonstration of actual starting,
operating and servicing procedures.
Throughout this publication and on tags and decals
affixed to the generator, DANGER and CAUTION
blocks are used to alert you to special instructions about
a particular operation that may be hazardous if per
formed incorrectly or carelessly. Observe them care
fully.
These safety warnings cannot eliminate the hazards
that they indicate. Strict compliance with the special
instructions while performing the service plus "common
sense" are major measures to prevent accidents.
The following definitions apply to DANGER, CAUTION
and NOTE blocks found throughout the manual.
DANGER: AFTER THIS HEADING YOU CAN
READ HANDLING, INSTALLING, OPERATING OR
SERVICING INSTRUCTIONS THAT, IF NOT
STRICTLY COMPLIED WITH, MAY RESULT IN
PERSONAL INJURY.
CAUTION: After this heading you can read instruc
tions for handling, installing, operating or servicing
the generator that, if not strictly complied with, may
result in damage to equipment and/or property.
NOTE: After this heading you can read explanatory
statements that require special emphasis.
The operator (driver) is responsible for proper and safe
use of the vehicle, equipment on the vehicle, and the
safety of all vehicle occupants. We strongly recom
mend that the operator read this Owner’s Manual and
thoroughly understand all instructions before using this
equipment. We also strongly recommend instructing
other occupants in the vehicle to properly start and
operate the generator. This prepares them if they need
to operate the equipment in an emergency.
OPERATION AND MAINTENANCE
It is the operator’s responsibility to perform all safety
checks: to make sure that all maintenance for safe
operation is performed promptly; and to have the equip
ment checked by an Authorized Dealer periodcially.
Normal maintenance service and replacement of parts
are the responsibility of the Owner/Operator and, as
such, are not considered defects in materials or work
manship within the terms of the warranty. Individual
operating habits and usage contribute to the need for
maintenance service.
Proper maintenance and care of your industrial mobile
generator assures a minimum number of problems and
keeps your operating expenses at a minimum. See
your authorized Dealer/Distributor for service aids and
accessories.
HOW TO OBTAIN SERVICE
When your industrial mobile generator set requires ser
vicing or repairs, simply contact an Authorized Service
Station for assistance. Sen/ice technicians are factorytrained and are capable of handling all of your service
needs.
When contacting an Authorized Service Facility or the
factory about parts and service, always supply the com
plete model number and serial number of your unit as
given on its data plate.
The warranty on your generator is included in this
Owner's Manual, as well as listings for repair parts.
-S-
GENERATOR FEATURES
REFERENCE NUMBER IDENTIFICATION
1. Generator Air Intake Screen
2. Engine Start/Stop Switch
3. 15 amp Fuse
4. 20 or 30 amp Circuit Breaker
5. Optional Remote Panel Receptacle
6. Generator AC Output Leads
7. 30 amp Circuit Breaker
8. Starter Contactor
9. Fuel Inlet
10. Fuel Pump Primer Switch
11. Fuel Pump
12. Oil Filter
13. Oil Drain Plug
14. Oil Dipstick and Filler Tube
-4-
GENERATOR FAMILIARIZATION
GENERATOR APPLICABILITY
Q-55G and Q-70G generators have been designed and
manufactured for supplying electrical po\wer for recrea
tional vehicles. You should not modify the generator or
use it for any application other than for what it was
designed. If there are any questions pertaining to its
application, write or call the factory. Do not use the unit
until you have been advised by competent authority.
DANGER: FOR FIRE SAFETY, THE GENERATOR
MUST HAVE BEEN PROPERLY INSTALLED IN
COMPLIANCE WITH (1) ANSI 119.2-1975/NFPA
501C-1974 "STANDARD FOR RECREATIONAL
VEHICLES", PART III, "INSTALLATION OF ELEC
TRICAL SYSTEMS." THE GENERATOR ALSO
MUST HAVE BEEN INSTALLED IN STRICT COM
PLIANCE WITH THE MANUFACTURER’S DE
TAILED INSTALLATION INSTRUCTIONS. AFTER
INSTALLATION, DO NOTHING THAT MIGHT
RENDER THE UNIT IN NON-COMPLIANCE WITH
SUCH CODES, STANDARDS AND INSTRUC
TIONS.
You can use your generator set to supply electrical
power for operating one of the following electrical loads:
• Q-55G: 120 and/or 240 volts, single phase, 60 Hz
electrical loads. These loads can require up to 5500
watts (5.5 kW) of power, but cannot exceed 45.8 AC
amperes of current at 120 volts or exceed 22.9 AC
amperes at 240 volts.
• Q-70G: 120 and/or 240 volts, single phase, 60 Hz
electrical loads. These loads can require up to 7000
watts (7.0 kW) of power, but cannot exceed 58.3 AC
amperes of current at 120 volts or exceed 29.1 AC
amperes at 240 volts.
An INSTALLATION MANUAL was shipped with the
generator. That Manual contains manufacturer’s in
structions and recommendations for installing the unit
into an industrial vehicle. After installation, installers
should fonvard the Installation Manual to Owners/Operators for their information.
Owners/Operators have the responsibility to make sure
that nothing is done that might render the installation
unsafe or in non-compliance with applicable codes,
standards and instructions.
SAFETY
Before using the generator set, carefully read GEN
ERAL SAFETY RULES inside the cover. Comply with
these RULES to prevent accidents and damage to
equipment and/or property. Generac suggests copying
and posting the GENERAL SAFETY RULES to potential
operators of this equipment.
GENERATOR AC CONNECTION SYSTEM
These air-cooled Q Series generator sets are equipped
with dual stator AC power windings. These two stator
windings supply electrical power to customer electrical
loads by means of a dual 2-wire connection system.
The generator may have been installed so that units
only power 120 volts AC loads (Figure 1); or you can
wire them to connect both 120 and/or 240 volts AC
electrical loads. Be sure to remove the jumper between
the circuit breakers when connecting for 120/240 volts.
CAUTION: Do not overload the generator. Some
installations may require that electrical loads be
alternated to avoid overloading. Applying exces
sively high electrical loads may damage the gener
ator and may shorten its life. Add up the rated watts
of all electrical lighting, appliance, tool and motor
loads the generator will power at one time. This
total should not be areater than the wattage capac
ity of the generator. If an electrical device nameplate
gives only volts and amps, multiply volts times
amps to obtain watts (volts x amps = watts). Some
electric motors require more watts of power (or
amps of current) for starting than for continuous
operation.
INSTALLATION
This Owner’s Manual has been prepared under the
assumption that a competent, qualified technician in
stalled the generator into an industrial vehicle. We also
assume the installer complied with all applicable codes,
standards and regulations pertaining to installation.
QROUNOED
NEUTRAL
Figure 1 — Connection for 120 Volts Only
5-
OPERATING INSTRUCTIONS
GENERATOR CONTROL PANEL
Mounted on the generator control panel (Figure 2) are
the following features:
• Fuel Pump Primer: Before starting a cold engine
(it has not been started in more than two weeks),
you must press this switch to bring fuel from the tank
to the fuel pump. This rocker type switch springs
back into its original position when you release it.
• Start/Stop Switch: To crank and start the engine,
hold this switch at its START position. Release the
switch when the engine starts. To stop an operating
engine, place the switch in its STOP position. The
switch center position is the RUN position.
• 15 amp Fuse: Protects the engine DC control
circuit against electrical overload. If the fuse ele
ment has melted open due to overloading, the en
gine cannot be cranked. If you must replace it, use
only an identical 15 amp replacement fuse.
• Line Breakers: Protects generator’s AC output
circuit against overload, i.e., prevents unit from
exceeding wattage/amperage capacity. NP-50G
has one 20 amp breaker and one 30 amp breaker.
NOTE: If your "Q" Series generator has been recon
nected for dual voltage AC output (120/240 volts), you
can install line breakers having an amperage rating that
is different than stated above. The replacement line
breakers consist of two separate breakers with a con
necting piece between the breaker handles (so that both
breakers will operate at the same time). If the unit is
reconnected for dual voltage, it is no longer RVIA listed.
START
FUSE
ISA
MAIN
BREAKER
<0
©
GENERAC
RV.
GENERATOR
GEN. RUN
STOP START
Figure 3 — Optional Remote Panel (Model 9042)
AUTOMATIC CHOKE
The engine is equipped with an automatic choke that
consists of two main components—choke solenoid and
prechoke.
Choke Solenoid: During engine cranking (start/stop
switch at START), a solid state choke module signals
the choke solenoid to actuate and cycle (choke
on/choke off) until engine starts. The choke solenoid
thus opens and closes the carburetor choke valve only
when the engine is cranking. When the engine starts,
the choke cycling stops.
Prechoke: The choke system also has a temperature
sensitive metal strip that adjusts the choke valve angle
according to ambient temperatures (i.e. in cold ambient
temperatures the choke valve closes more). Once the
engine starts, an element heats the temperature-sensi
tive strip to a normal operating condition, opening the
choke valve. This may take about 3 minutes in cooler
weather.
jj
STOP
FUEL
PRIMER
Figure 2 — Typical Control Panel
OPTIONAL REMOTE START/STOP PANEL
Optional remote mounted panels are available which
permit you to crank and start the generator from any
convenient location in the industrial vehicle. Figure 3
shows the Model 9042 remote panel which includes (a)
start/stop switch and (b) a generator run lamp.
You can also order Model 9043, a remote panel which
includes the (a) start/stop switch, (b) the generator run
lamp and (c) an hourmeter. The hourmeter provides a
continuous indication of engine-generator operating
time. Use the hourmeter for checking off periodic main
tenance requirements on the unit.
BEFORE STARTING THE ENGINE
IMPORTANT: INSTRUCTIONS AND INFORMATION
IN THIS MANUAL ASSUME THE GENERATOR HAS
BEEN PROPERLY INSTALLED, CONNECTED, SER
VICED, TESTED AND ADJUSTED BY A OUALIFIED
INSTALLATION TECHNICIAN OR INSTALLATION
CONTRACTOR.
• Installation: Generator installation must have
been properly completed so it complies with all
applicable codes, standards and regulations and
with the manufacturer’s recommendations.
• Engine Lubrication: Have engine crankcase
properly serviced with recommended oil before
starting. Refer to "Maintenance“ and "Specifica
tions” sections for oil servicing procedures and rec
ommendations.
CAUTION: Any attempt to crank or start the engine
before you have properiy serviced it with the recom
mended oii will result in an engine failure.
-6-
Fuel Supply: The engine must have adequate
supply of proper fuel to operate. Before starting,
check that sufficient fuel is available.
NOTE: On some installations, the generator en
gine may “share" the vehicle’s gasoline fuel tank
with vehicle engine. Some installations may pro
vide separate fuel tanks for generator and vehicle
engine.
Cooling and Ventilating Air: Air inlet and outlet
openings in the generator compartment must be
open and unobstructed for continued proper oper
ation. Without sufficient cooling and ventilating air
flow, the engine-generator quickly overheats which
causes it to quickly shutdown. Overheating could
also damage the unit or your vehicle.
Engine Exhaust Gases: Before starting the gen
erator engine, you should be sure there is no way
for exhaust gases to enter the vehicle interior and
endangering people or animals. Close windows,
doors and other openings in the vehicle that, if open,
might permit exhaust gases to enter the vehicle.
DANGER: THE GENERATOR ENGINE GIVES
OFF DEADLY CARBON MONOXIDE GAS
THROUGH ITS EXHAUST SYSTEM. THIS DAN
GEROUS GAS, IF BREATHED IN SUFFICIENT
CONCENTRATIONS, CAN CAUSE UNCON
SCIOUSNESS OR EVEN DEATH. DO NOT OPER
ATE THE GENERATOR IF ITS EXHAUST SYSTEM
IS LEAKING OR HAS BEEN DAMAGED. SYMP
TOMS OF CARBON MONOXIDE POISONING ARE
(A) INABILITY TO THINK COHERENTLY, (B)
VOMITTING, (C) TWITCHING MUSCLES, (D)
THROBBING TEMPLES, (E) DIZZINESS, (F)
HEADACHE, (G) WEAKNESS AND SLEEPINESS.
IF YOU FEEL ANY OF THESE SYMPTOMS, MOVE
INTO FRESH AIR IMMEDIATELY. IF SYMPTOMS
PERSIST, GET MEDICAL HELP.
STARTING
IMPORT ANT: Read the vehicle manufacturer’s instruc
tions. The owner/operator should become familiar with
the vehicle in which this generator is installed. Differ
ences exist between vehicles. For example, some ve
hicles may use a transfer switch to isolate dockside
power from the generator, while other vehicles may use
an isolating receptacle. Some vehicles may be
equipped with a DC converter which allows the gener
ator to power certain DC lighting and other DC loads.
To crank and start the generator engine, proceed as
follows;
1. Turn CFF electrical loads, using whatever means
provided in your vehicle (such as a main line circuit
breaker or transfer switch.
NOTE: If you start the engine with start/stop switch on
the generator control panel, turn CFF loads by setting
the panel’s main breakers to their "CFF“ or “CPEN"
positions. Electrical load circuits will be turned CN after
the generator has started, stabilized and warmed up.
2. If you have not started the engine in more than two
weeks, press the Fuel Pump Primer switch and hold
it for about 30 seconds to activate the automatic
shut-off function. However, if the engine is warm,
skip Step 2.
3. To crank and start the engine, hold the start/stop
switch at START. Release the switch when the
engine starts.
CAUTION: If the engine does not start after it has
been cranking for 15 seconds, release the start/stop
switch and try again. Holding the switch for longer
than 15 seconds can damage the starter motor.
4. Let the engine run at no-load for a few minutes to
stabilize and warm up the engine.
5. Turn CN electrical loads, using whatever means
provided (such as a main circuit breaker or transfer
switch).
STOPPING THE GENERATOR
1. Turn CFF all electrical loads, using whatever
means provided (such a main circuit breaker or
transfer switch).
2. Let the generator run at no-load for a few minutes,
to stabilize internal engine-generator tempera
tures.
3. Press STCP on the start/stop switch. The engine
will come to complete stop.
APPLYING LOADS TO GENERATOR
When applying electrical loads to the generator, ob
serve these guidelines:
• Before applying electrical loads, let the generator
stabilize and warm up for a minute or two.
• DC NCT overload the generator.
Letting Engine Stabilize: The generator supplies cor
rect rated frequency and voltage only at the proper
governed speed. Some electrical appliances may be
extremely sensitive to voltage and frequency. Incorrect
frequencies and/or voltages can damage those appli
ances.
If electrical loads are applied at reduced operating
speeds, such loads imposed on the engine when suffi
cient power is not available may shorten engine life.
Never turn CN electrical loads until after the generator
engine has started and stabilized CN-speed.
-7-
Do Not Overload the Generator: You can read the
rated wattage/amperage capacity of your generator on
the generator data plate (see 'Identification Record" on
Page 1).
Applying electrical loads in excess of the unit’s rated
capacity can bum out the unit and anything connected
to it. Also, overloading trips main circuit breakers.
To avoid overloading, add up the wattage of all con
nected electrical lighting, appliance, tool and motor
loads. This total should not be greater than the
generator’s rated wattage capacity.
• Most lighting, appliance, tool and motor loads indi
cate their reouired watts on their nameplate or data
plate. For light bulbs, simply note the wattage rating
of the bulb.
WATTAGE REFERENCE GUIDE
If a load does not show its rated wattage, multiply
that load’s rated VOLTS times AMPS to obtain
WATTS.
Induction type motors (such as those that run the
vehicie’s furnace fan, refrigerator, air conditioner,
etc.) need about 2-1/2 times more watts of power
for starting than for running (for a few seconds
during motor starting). Be sure to allow for this
when connecting electrical loads to the generator.
Rrst, figure the watts needed to start electric motors
in the system. To that figure, add the running
wattages of other items that will be operated by the
generator.
Do not apply heavy electrical loads for the first two
or three hours of operation.
RUNNING
WATTS
*Air Conditioner (12,000 Btu)
Battery Charger (20 amp)
.................................
.......................................
1700
500
Belt Sander (3').......................................................1000
Chain Saw
Circular Saw (6-12/")
..............................................................
....................................
800 to 1000
1200
Coffee Maker..........................................................1000
‘Compressor (1 HP)
...............................................
2000
‘Compressor (3/4 HP).............................................1800
‘Compressor (1/2 HP).....................................^
......
1400
Curling Iron...............................................................700
‘Deep Freeze............................................................500
Disc Sander (9").....................................................1200
Edge Trimmer...........................................................500
Electric Nail Gun
Electric Range (one element)
Electric Skillet
....................................................
................................
....................:....................................
1200
1500
1250
‘Furnace Fan (1/3 HP)............................................1200
Hair Dryer...............................................................1200
Hand Drill (Г)
Hand Drill (1/2')
..........................................................
...........................................
750 to 1000
1100
Hand Drill (3/8")........................................................500
Hand Drill (1/4")...................................................... 250
Hedge Trimmer
Impact Wrench
‘Jet Pump
........................................................
.........................................................
.................................................................
450
500
800
RUNNING
WATTS
Lawn Mower
Light Bulb.......................................................................100
Microwave Oven............................................................700
‘Milk Cooler..................................................................1100
Oil Burner on Furnace
Oil Rred Space Heater (140,000 Btu)............................400
Oil Rred Space Heater (85,000 Btu)..............................225
Oil Rred Space Heater (30,000 Btu)..............................150
‘Paint Sprayer, Airless (1/3 HP).....................................600
Paint Sprayer, Airless (handheld)..................................150
Radio...................................................................
‘Refrigerator
Slow Cooker..................................................................200
‘Submersible Pump (1-1/2 HP)....................................2800
‘Submersible Pump (1 HP)
‘Submersible Pump (1/2 HP).......................................1500
Sump Pump...................................................................600
‘Table Saw (10")
Television
Weed Trimmer................................................................500
‘ Allow 2-1/2 times the listed watts for starting these
devices.
..............................................................
...................................................
................................;.................................
......
....................................2000
.........................
..........................................................
.................
1750 to 2000
200 to 500
1200
300
50 to 200
600
-8-
This section discusses some of the engine protective
devices, overload protection and breaking in a new
generator.
AUTOMATIC LOW OIL PRESSURE
SHUTDOWN
The engine is equipped with a normally-closed (N.C.)
oil pressure switch (Figure 4). Engine oil pressure holds
the switch open during cranking and operation. Should
oil pressure drop below about 2-6 PSI, the switch con
tacts close and the engine automatcially shuts down.
Figure 4 — Switches for Enghe Safety Shutdown
ADDITIONAL INFORMATION
OVER VOLTAGE PROTECTION
A solid state voltage regulator (Rgure 6) controls the
generator’s AC output voltage. This regulator supplies
an excitation current to the rotor. By regulating the
rotor’s excitation current, the strength of its magnetic
field is regulated and, in turn, the voltage delivered to
connected electricaJ loads is controlled. When the AC
frequency is 60 Hz, voltage is regulated at 120 volts
(voltage-to-frequency ratio is 2-to-1).
HIGH TEMPERATURE SHUTDOWN
An oil temperature switch (Figure 4) with normally-open
(N.O.) contacts is mounted near the oil filter. If oil
temperature were to exceed about 284®F (140“C), the
switch contacts close and the engine shuts down.
FIELD BOOST
The Controller Circuit Board houses a field boost diode
and resistor which are not part of the automatic choke
circuit. These two components are part of a "field boost"
circuit (Figure 5). During engine cranking only, a posi
tive DC (battery) voltage is delivered through the diode,
resistor, brushes and slip rings, and to the generator
rotor. Application of this voltage to the rotor "flashes the
field’ whenever it is started. Hashing of the field each
time the generator starts makes sure that a sufficiently
strong magnetic field is available to produce the re
quired "pick up" voltage in the stator windings.
The voltage regulator also incorporates a "voltage surge
protection circuit." This circuit prevents troublesome
surges in the generator AC ou^ut voltage. Voltage
surge is a common cause of damage to electronic
equipment.
-9-
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