CAC / BDP 8kW User manual

Study
Guide
SERVICE TRAINING
Air-Cooled Training

Owner’s Manual
8, 10, 12, 14, 16, 17 & 20kW Air-cooled,
Automatic Standby Generators
DANGER
DEADLY EXHAUST FUMES. OUTDOOR INSTALLATION ONLY!
Not intended for use as Primary Power in place of utility
or in life-support applications.
 
L I S T E D
CU
S
DO NOT LIFT UNIT BY ROOF!

INTRODUCTION
Thank you for purchasing this compact, high per-
formance, air-cooled, engine-driven generator. It is
designed to automatically supply electrical power to
operate critical loads during a utility power failure.
This unit is factory installed in an all-weather, metal
enclosure that is intended exclusively for outdoor
installation. This generator will operate using either
vapor withdrawn liquid propane (LP) or natural gas
(NG).
NOTE:
This generator is suitable for supplying typical
residential loads such as Induction Motors (sump
pumps, refrigerators, air conditioners, furnaces,
etc.), Electronic Components (computer, monitor,
TV, etc.), Lighting Loads and Microwaves.
READ THIS MANUAL THOROUGHLY
If any portion of this manual is not understood, con-
tact the nearest Dealer for starting, operating and
servicing procedures.
Throughout this publication, and on tags and decals
affixed to the generator, DANGER, WARNING,
CAUTION and NOTE blocks are used to alert person-
nel to special instructions about a particular opera-
tion that may be hazardous if performed incorrectly
or carelessly. Observe them carefully. Their defini-
tions are as follows:
DANGER
After this heading, read instructions that, if not
strictly complied with, will result in serious person-
al injury, including death, in addition to property
damage.
After this heading, read instructions that, if not
strictly complied with, may result in serious person-
al injury or property damage.
After this heading, read instructions that, if not
strictly complied with, could result in damage to
equipment and/or property.
NOTE:
After this heading, read explanatory statements
that require special emphasis.
These safety warnings cannot eliminate the haz-
ards that they indicate. Common sense and strict
compliance with the special instructions while
performing the service are essential to preventing
accidents.
Four commonly used safety symbols accompany the
DANGER, WARNING and CAUTION blocks. The type
of information each indicates follows:
This symbol points out important safety infor-
mation that, if not followed, could endanger
personal safety and/or property of others.
This symbol points out potential explosion haz-
ard.
This symbol points out potential fire hazard.
This symbol points out potential electrical shock
hazard.
The operator is responsible for proper and safe use
of the equipment. The manufacturer strongly recom-
mends that the operator read this Owner's Manual
and thoroughly understand all instructions before
using this equipment. The manufacturer also strong-
ly recommends instructing other users to properly
start and operate the unit. This prepares them if they
need to operate the equipment in an emergency.
CONTENTS
This manual contains pertinent owner’s information
for these models:
7 kW NG, 8 kW LP, single-cylinder GH-410 Engine•
9 kW NG, 10 kW LP, V-twin GT-530 Engine•
12 kW NG, 12 kW LP, V-twin GT-990 Engine•
13 kW NG, 14 kW LP, V-twin GT-990 Engine•
16 kW NG, 16 kW LP, V-twin GT-990 Engine•
16 kW NG, 17 kW LP, V-twin GT-990 Engine•
18 kW NG, 20 kW LP, V-twin GT-999 Engine•
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
equipment checked periodically by a Dealer. Normal
maintenance service and replacement of parts are the
responsibility of the owner/operator and, as such, are
not considered defects in materials or workmanship
within the terms of the warranty. Individual operating
habits and usage contribute to the need for mainte-
nance service.
Proper maintenance and care of the generator ensures
a minimum number of problems and keep operating
expenses at a minimum. See a Dealer for service aids
and accessories.
HOW TO OBTAIN SERVICE
When the generator requires servicing or repairs,
contact a Dealer for assistance. Service technicians
are factory-trained and are capable of handling all
service needs.
When contacting a Dealer about parts and service,
always supply the complete model number and serial
number of the unit as given on its data decal, which is
located on the generator. See section "The Generator"
for decal location.
Model No. ____________ Serial No.______________

Table of Contents
Air-cooled Generators
1
Introduction ........................Inside Front Cover
Read This Manual Thoroughly ........................ IFC
Contents.......................................................... IFC
Operation and Maintenance ............................ IFC
How to Obtain Service..................................... IFC
Table of Contents...............................................1
Safety Rules.........................................................2
Standards Index.................................................. 3
Section 1 – General Information ...................4
1.1 Unpacking/Inspection....................................4
1.2 Protection Systems........................................4
1.3 NEC Requirement for Arc Fault Circuit
Interruption Breaker for Bedrooms...............4
1.4 Emission Information....................................5
1.5 The Generator...............................................6
1.6 Specifications ................................................ 7
1.7 System Set LED ............................................8
1.8 Fuel Requirements and Recommendations.... 8
1.9 Fuel Consumption .........................................8
1.10 Reconfiguring the Fuel System.......................9
1.11 Location ......................................................10
1.12 Battery Requirements..................................11
1.13 Battery Installation......................................11
1.14 The Battery..................................................12
1.15 Battery Charger...........................................12
Section 2 – Post Installation Start-up
and Adjustments........................13
2.1 Before Initial Startup...................................13
2.2 Check Transfer Switch Operation................13
2.3 Electrical Checks.........................................13
2.4 Generator Tests Under Load .......................14
2.5 Checking Automatic Operation....................14
2.6 Engine Governor Adjustment ......................15
2.7 Voltage Regulator Adjustment......................15
Section 3 – Operation.....................................16
3.1 Control Panel Interface................................16
3.2 Automatic Transfer Operation.....................17
3.3 Sequence of Automatic Operation................18
3.4 Manual Transfer Operation .........................19
3.5 Side Compartment (V-twin Only).................20
3.6 Protection Systems......................................20
Section 4 – Maintenance .............................. 22
4.1 Fuse.............................................................22
4.2 Checking the Engine Oil Level .....................22
4.3 Changing the Engine Oil ..............................23
4.4 Changing the Engine Air Cleaner.................23
4.5 Spark Plug(s) ..............................................24
4.6 Battery Maintenance....................................25
4.7 Adjusting GH-410/GT-530/990/999
Valve Clearance............................................25
4.8 Cooling System............................................26
4.9 Attention After Submersion.........................26
4.10 Corrosion Protection ...................................27
4.11 Out of Service Procedure.............................27
4.12 Service Schedule .........................................28
Section 5 – Troubleshooting ........................ 29
5.1 Troubleshooting Guide................................29
Section 6 – Appendix..................................... 30
6.1 Menu System Navigation .............................30
Section 7 – Notes............................................ 32
Section 8 – Installation Diagrams .............. 33
Section 9 – Warranty...................................... 36

2
Study these SAFETY RULES carefully before install-
ing, operating or servicing this equipment. Become
familiar with this Owner’s Manual and with the
unit. The generator can operate safely, efficiently and
reliably only if it is properly installed, operated and
maintained. Many accidents are caused by failing to
follow simple and fundamental rules or precautions.
The manufacturer cannot anticipate every possible
circumstance that might involve a hazard. The warn-
ings in this manual, and on tags and decals affixed
to the unit are, therefore, not all-inclusive. If using
a procedure, work method or operating technique
the manufacturer does not specifically recommend,
ensure that it is safe for others. Also make sure the
procedure, work method or operating technique uti-
lized does not render the generator unsafe.
DANGER
Despite the safe design of this generator,
operating this equipment imprudently, neglecting
its maintenance or being careless can cause
possible injury or death. Permit only responsible
and capable persons to operate or maintain this
equipment.
Potentially lethal voltages are generated by
these machines. Ensure all steps are taken to
render the machine safe before attempting to
work on the generator.
Parts of the generator are rotating and/or hot
during operation. Exercise care near running
generators.
GENERAL HAZARDS 
For safety reasons, the manufacturer recommends• that the installation, initial start-up and main-
tenance of this equipment is carried out by a
Dealer.
The engine exhaust fumes contain carbon monox-• ide, which can be DEADLY. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness or even death. Do NOT alter or
add to the exhaust system or do anything that
might render the system unsafe or in noncompli-
ance with applicable codes and standards.
Keep hands, feet, clothing, etc., away from drive• belts, fans, and other moving or hot parts. Never
remove any drive belt or fan guard while the unit
is operating.
Adequate, unobstructed flow of cooling and venti-• lating air is critical to correct generator operation.
Do not alter the installation or permit even partial
blockage of ventilation provisions, as this can seri-
ously affect safe operation of the generator. The
generator MUST be installed outdoors.
When working on this equipment, remain alert• at all times. Never work on the equipment when
physically or mentally fatigued.
Inspect the generator regularly, and contact the• nearest Dealer for parts needing repair or replace-
ment.
Before performing any maintenance on the gen-• erator, disconnect its battery cables to prevent
accidental start up. Disconnect the cable from the
battery post indicated by a NEGATIVE, NEG or
(–) first, then remove the POSITIVE, POS or (+)
cable. When reconnecting the cables, connect the
POSITIVE cable first, the NEGATIVE cable last.
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 con-
ditions from leaking exhaust gases, fuel leakage,
oil leakage, etc.
IMPORTANT SAFETY INSTRUCTIONS
Air-cooled Generators
SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe operation
be copied and posted near the unit’s installation site. Safety should be stressed to all opera-
tors and potential operators of this equipment.

The engine exhaust from this product• contains chemicals known to the state
of California to cause cancer, birth
defects or other reproductive harm.
WARNING:•

This product contains or emits chemicals• known to the state of California to cause
cancer, birth defects or other reproductive harm.
WARNING:•


3
ELECTRICAL HAZARDS 
All generators covered by this manual produce• dangerous electrical voltages and can cause fatal
electrical shock. Utility power delivers extremely
high and dangerous voltages to the transfer switch
as does the standby generator when it is in opera-
tion. Avoid contact with bare wires, terminals,
connections, etc., while the unit is running. Ensure
all appropriate covers, guards and barriers are in
place, secured and/or locked before operating the
generator. If work must be done around an oper-
ating unit, stand on an insulated, dry surface to
reduce shock hazard.
Do not handle any kind of electrical device while• standing in water, while barefoot, or while hands or
feet are wet. DANGEROUS ELECTRICAL SHOCK
MAY RESULT.
The National Electrical Code (NEC) requires the• frame and external electrically conductive parts of
the generator to be connected to an approved earth
ground. Local electrical codes also may require
proper grounding of the generator electrical system.
After installing this home standby electrical sys-• tem, the generator may crank and start at any
time without warning. When this occurs, load cir-
cuits are transferred to the STANDBY (generator)
power source. To prevent possible injury if such a
start and transfer occur, always set the generator’s
AUTO/OFF/MANUAL switch to its OFF position
before working on equipment and remove the 15A
fuse from the generator control panel.
In case of accident caused by electric shock, imme-• diately shut down the source of electrical power. If
this is not possible, attempt to free the victim from
the live conductor. AVOID DIRECT CONTACT WITH
THE VICTIM. Use a nonconducting implement,
such as a dry rope or board, to free the victim from
the live conductor. If the victim is unconscious,
apply first aid and get immediate medical help.
Never wear jewelry when working on this equip-• ment. Jewelry can conduct electricity resulting in
electric shock, or may get caught in moving com-
ponents causing injury.
FIRE HAZARDS 
For fire safety, the generator must be installed and• maintained properly. Installation must always
comply with applicable codes, standards, laws
and regulations. Adhere strictly to local, state
and national electrical and building codes. Comply
with regulations the Occupational Safety and
Health Administration (OSHA) has established.
Also, ensure that the generator is installed in
accordance with the manufacturer’s instructions
and recommendations. Following proper installa-
tion, do nothing that might alter a safe installation
and render the unit in noncompliance with the
aforementioned codes, standards, laws and regu-
lations.
Keep a fire extinguisher near the generator at all• times. Extinguishers rated “ABC” by the National
Fire Protection Association are appropriate for
use on the standby electric system. Keep the extin-
guisher properly charged and be familiar with its
use. Consult the local fire department with any
questions pertaining to fire extinguishers.
EXPLOSION HAZARDS 
Do not smoke around the generator. Wipe up any• fuel or oil spills immediately. Ensure that no com-
bustible materials are left in the generator com-
partment, or on or near the generator, as FIRE or
EXPLOSION may result. Keep the area surround-
ing the generator clean and free from debris.
Gaseous fluids such as natural gas and liquid pro-• pane (LP) gas are extremely EXPLOSIVE. Install
the fuel supply system according to applicable
fuel-gas codes. Before placing the home standby
electric system into service, fuel system lines must
be properly purged and leak tested according to
applicable code. After installation, inspect the fuel
system periodically for leaks. No leakage is permit-
ted.
STANDARDS INDEX
In the absence of pertinent standards, codes, regu-
lations and laws, the published information listed
below may be used as installation guide for this
equipment.
1. NFPA No. 37, STATIONARY COMBUSTION
ENGINES AND GAS TURBINES, available from
the National Fire Protection Association, 470
Atlantic Avenue, Boston, MA 02210.
2. NFPA No. 76A, ESSENTIAL ELECTRICAL
SYSTEMS FOR HEALTH CARE FACILITIES,
available same as Item 1.
3. NFPA No. 54, NATIONAL FUEL GAS CODE,
available same as Item 1.
4. NFPA No. 58, AMERICAN NATIONAL STANDARD
FOR STORAGE AND HANDLING OF LIQUEFIED
PETROLEUM GAS, available same as Item 1.
5. NFPA No. 70, NFPA HANDBOOK OF NATIONAL
ELECTRIC CODE, available same as Item 1.
6. Article X, NATIONAL BUILDING CODE, available
from the American Insurance Association, 85
John Street, New York, N.Y. 10038.
7. AGRICULTURAL WIRING HANDBOOK, avail-
able from the Food and Energy Council, 909
University Avenue, Columbia, MO 65201.
8. ASAE EP-3634, INSTALLATION AND
MAINTENANCEOFFARMSTANDBYELECTRICAL
SYSTEMS, available from the American Society
of Agricultural Engineers, 2950 Niles Road, St.
Joseph, MI 49085.
9. NFPA No. 30, FLAMMABLE AND COMBUSTIBLE
LIQUIDS CODE, available same as Item 1.
IMPORTANT SAFETY INSTRUCTIONS
Air-cooled Generators

DANGER
Only qualified electricians or contractors should
attempt such installations, which must comply
strictly with applicable codes, standards and regu-
lations.
1.1 UNPACKING/INSPECTION
After unpacking, carefully inspect the contents for
damage.
This standby generator set is ready for installa-• tion with a factory supplied and pre-mounted base
pad and has a weather protective enclosure that is
intended for outdoor installation only.
This UL listed standby generator set may be pack-• aged with an automatic transfer switch with built
in load center. The combination transfer switch
and load center is pre-wired with a two foot and
30 foot conduit. Circuit breakers for emergency
circuit connections are included (if equipped).
This UL listed, 2-pole switch is rated at 100• or 200
AC amperes at 250 volts maximum. The 100 Amp
transfer switch is for indoor use only. The 200
Amp transfer switch is for indoor/outdoor use
(if equipped).
If this generator is used to power electrical load
circuits normally powered by a utility power
source, it is required by code to install a transfer
switch. The transfer switch must effectively isolate
the electrical system from the utility distribution
system when the generator is operating (NEC 700,
701 & 702). Failure to isolate an electrical system
by such means will result in damage to the gen-
erator and also may result in injury or death to
utility power workers due to backfeed of electrical
energy.
If any loss or damage is noted at time of delivery, have
the person(s) making the delivery note all damage on
the freight bill or affix their signature under the con-
signor's memo of loss or damage.
If a loss or damage is noted after delivery, separate
the damaged materials and contact the carrier for
claim procedures.
“Concealed damage” is understood to mean damage
to the contents of a package that is not in evidence at
the time of delivery, but is discovered later.
To properly open the roof, press down on the cen-
ter top lip and release the latch. If pressure is not
applied from the top, the roof may appear stuck.
Always verify that the side lock is unlocked before
attempting to lift the roof.
1.2 PROTECTION SYSTEMS
Unlike an automobile engine, the generator may have
to run for long periods of time with no operator pres-
ent to monitor engine conditions. For that reason,
the engine is equipped with the following systems
that protect it against potentially damaging condi-
tions:
1. Low Oil Pressure Sensor
2. High Temperature Sensor
3. Overcrank
4. Overspeed
5. RPM Sensor
6. Low Battery
There are readouts on the control panel to notify
personnel that one of these failures has occurred.
There is also a System Set LED (single cylinder) or a
Status message on the display (V-twins) that displays
when all of the conditions described in the "System
Set LED" section are true.
1.3 NEC REQUIREMENT FOR ARC
FAULT CIRCUIT INTERRUPTION
BREAKER FOR BEDROOMS
In 2001, the National Electric Code (NEC) intro-
duced a requirement for new construction. This new
requirement indicates the need for Arc Fault Circuit
Interrupters to be used to protect the complete
branch circuit that feeds a dwelling bedroom. The
actual NEC requirement is indicated below.
1.3.1 SECTION 210.12 ARC FAULT CIRCUIT
INTERRUPTER PROTECTION
1. Definition: An arc fault circuit interrupter is a
device intended to provide protection from the
effects of arc faults by recognizing characteristics
unique to arcing and by functioning to de-ener-
gize the circuit when an arc fault is detected.
2. Dwelling Unit Bedrooms: All branch circuits that
supply 125 volt, single-phase, 15 and 20 ampere
outlets installed in dwelling unit bedrooms shall
be protected by an arc fault circuit interrupter
listed to provide protection of the entire branch
circuit.
Section 210.12 requires that AFCI protection be
provided on branch circuits that supply outlets
(receptacle, lighting, etc.) in dwelling bedrooms. The
requirement is limited to 15 and 20 ampere, 125
volt circuits. There is no prohibition against provid-
ing AFCI protection on other circuits or in locations
other than bedrooms. Because circuits are often
shared between a bedroom and other areas such as
closets and hallways, providing AFCI protection on
the complete circuit would comply with 210.12.
Section 1 — General Information
Air-cooled Generators
4

Section 1 — General Information
Air-cooled Generators
5
If during the installation of the home standby system
the decision is made to provide back up power to a
bedroom branch circuit, then the circuit breaker in
the transfer switch should be replaced with an Arc
Fault Circuit Interrupter.
It is most important that breakers only be switched
like for like. For instance, if replacing a 15A breaker,
it MUST be replaced with a 15A AFCI breaker.
Likewise, a 20A breaker MUST be replaced with a
20A AFCI.
These AFCI breakers are available at the nearest
hardware store.
Siemens Item # Description
Q115AF 15A Single Pole AFCI
Q120AF 20A Single Pole AFCI
1.4 EMISSION INFORMATION
The Environmental Protection Agency requires that
this generator complies with exhaust emission stan-
dards. This generator is certified to meet the appli-
cable EPA emission levels. Additional information
regarding the requirements set by the EPA is as fol-
lows:
The generator is certified for use as a stationary
engine for standby power generation. Any other use
may be a violation of federal and/or local laws. It is
important that to follow the maintenance specifica-
tions in the "Maintenance" section to ensure that the
engine complies with the applicable emission stan-
dards for the duration of the engine’s life. This engine
is certified to operate on Liquid Propane fuel and
pipeline Natural Gas. The emission control system
on the generator consists of the following:
Fuel Metering System•
Carburetor/mixer assembly•
Fuel regulator•
Air Induction System•
Intake pipe/manifold•
Air cleaner•
Ignition System•
Spark plug•
Ignition module•
The Emissions Compliance Period referred to on the
Emissions Compliance Label indicates the number of
operating hours for which the engine has been shown
to meet Federal emission requirements. See the table
below to determine the compliance period for the
generator. The displacement of the generator is listed
on the Emissions Compliance Label.
Displacement Category Compliance Period
< 66 cc
A 300 Hours
B 125 Hours
C 50 Hours
66 cc -
< 225 cc
A 500 Hours
B 250 Hours
C 125 Hours
225 cc
A 1000 Hours
B 500 Hours
C 250 Hours

6
Section 1 — General Information
Air-cooled Generators
1.5 THE GENERATOR
Data Label
(see sample)
Oil
Dipstick
Exhaust
Enclosure
Composite Base Oil Filter Battery Compartment
Fuel
Regulator
Fuel Inlet
(back)
Air Filter
Circuit
Breaker
Control
Panel
Data Label
(see sample)
Oil
Dipstick
Exhaust
Enclosure
Composite Base Oil Filter Battery Compartment
Fuel
Regulator
Fuel Inlet
(back)
Air Filter
Circuit Breakers
GFCI Outlet
(All 17 & 20kW)
Control
Panel
Figure 1.3 – 12, 14, 16, 17 and 20kW, V-twin,
GT-990/GT-999 Engine (door removed)
Figure 1.1 – 8kW, Single Cylinder, GH-410 Engine
(door removed)
Data Label
(see sample)
Oil
Dipstick
Exhaust
Enclosure
Composite Base Oil Filter Battery Compartment
Fuel
Regulator
Fuel Inlet
(back)
Air
Filter
Circuit
Breaker
Control
Panel
Figure 1.2 – 10kW, V-twin, GT-530 Engine
(door removed)
Data Label Sample

7
Section 1 — General Information
Air-cooled Generators
1.6 SPECIFICATIONS
1.6.1 GENERATOR
Model 8kW 10kW 12kW 14kW 16kW 17kW 20kW
Rated Maximum
Power Capacity (Watts*)
7,000 NG
8,000 LP
9,000 NG
10,000 LP
12,000 NG
12,000 LP
13,000 NG
14,000 LP
16,000 NG
16,000 LP
16,000 NG
17,000 LP
18,000 NG
20,000 LP
Rated Voltage 120/240
Rated Maximum Load Current (Amps)
120 Volts** (NG/LP) 58.3/66.6 75.0/83.3 100.0/100.0 108.3/116.6 133.3/133.3 133.3/141.6 150.0/166.6
240 Volts (NG/LP) 29.2/33.3 37.5/41.6 50.0/50.0 54.2/58.3 66.6/66.6 66.6/70.8 75.0/83.3
Main Circuit Breaker 35 Amp 45 Amp 50 Amp 60 Amp 65 Amp 65 Amp 100 Amp
Circuits*** 50A, 240V - - - 1 1 1 -
40A, 240V - - 1 1 1 1 -
30A, 240V 1 1 1 - - - -
20A, 240V - 1 - 1 1 1 -
20A, 120V 1 3 3 4 5 5 -
15A, 120V 5 3 5 4 5 5 -
Phase 1
Number of Rotor Poles 2
Rated AC Frequency 60 Hz
Battery Requirement
Group 26R, 12
Volts and 350
CCA Minimum
Group 26R, 12 Volts and 525 CCA Minimum
Weight (unit only in lbs.) 340 387 439 439 439 455/421 450
Enclosure Steel Steel Steel Steel Steel Steel/Aluminum Aluminum
Normal Operating Range -20° F (-28.8° C) to 77° F (25° C)
* Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition,
etc. Maximum power decreases about 3.5 percent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 6 C (10 F) above 16 C
(60 F) ambient temperature.
** Load current values shown for 120 volts are maximum TOTAL values for two separate circuits. The maximum current in each circuit must not exceed the
value stated for the 240 volts.
*** Circuits to be moved must be protected by same size breaker. For example, a 15 amp circuit in the main panel must be a 15 amp circuit in the transfer
switch.
1.6.2 ENGINE
Model 8 kW 10 kW 12/14/16/17 kW 20 kW
Type of Engine GH-410 GT-530 GT-990 GT-999
Number of Cylinders 1 2 2 2
Rated Horsepower @ 3,600 rpm 14.8 18 32 36
Displacement 410cc 530cc 992cc 999cc
Cylinder Block Aluminum w/Cast Iron Sleeve
Valve Arrangement Overhead Valves
Ignition System Solid-state w/Magneto
Recommended Spark Plug RC14YC BPR6HS RC14YC RC12YC
Spark Plug Gap 0.76 mm (0.030 inch) 0.76 mm (0.030 inch) 1.02 mm (0.040 inch) 0.76 mm (0.030 inch)
Compression Ratio 8.6:1 9.5:1 9.5:1 9.5:1
Starter 12 VDC
Oil Capacity Including Filter Approx. 1.5 Qts Approx. 1.7 Qts Approx. 1.7 Qts Approx. 1.7 Qts
Recommended Oil Filter Part # 070185F
Recommended Air Filter Part # 0G3332 Part # 0E9581 Part # 0C8127 Part # 0G5894
Operating RPM 3,600

1.7 SYSTEM SET LED
The “System Set” LED (single cylinder) or "Ready to
Run" on the display (v-twin) is ready when all of the
following conditions are true:
1. The AUTO/OFF/MANUAL switch is set to the
AUTO position.
2. The utility voltage being supplied to the unit is
being sensed by the PCB. If the utility sense volt-
age is not connected to the unit or if it is below
approximately 150-160 volts AC, then the system
set light will flash rapidly (8kW). This indicates
that if the AUTO/OFF/MANUAL switch is placed
in the Auto position, the generator will start.
3. No alarms are present, for example, low oil pres-
sure, high temperature, etc.
1.8 FUEL REQUIREMENTS
AND RECOMMENDATIONS
With LP gas, use only the vapor withdrawal sys-
tem. This type of system uses the vapors formed
above the liquid fuel in the storage tank.
The engine has been fitted with a fuel carburetion
system that meets the specifications of the 1997
California Air Resources Board for tamper-proof dual
fuel systems. The unit will run on natural gas or LP
gas, but it has been factory set to run on natural gas.
Should the primary fuel need to be changed to LP
gas, the fuel system needs to be reconfigured. See the
reconfiguring the Fuel System section for instructions
on reconfiguration of the fuel system.
Recommended fuels should have a Btu content of at
least 1,000 Btus per cubic foot for natural gas; or at
least 2,520 Btus per cubic foot for LP gas. Ask the
fuel supplier for the Btu content of the fuel.
Required fuel pressure for natural gas is five (5)
inches to seven (7) inches water column (0.18 to
0.25 psi); and for liquid propane, 10 inches to 12
inches of water column (0.36 to 0.43 psi). The
primary regulator for the propane supply is NOT
INCLUDED with the generator.
NOTE:
All pipe sizing, construction and layout must com-
ply with NFPA 54 for natural gas applications and
NFPA 58 for liquid propane applications. Once the
generator is installed, verify that the fuel pressure
NEVER drops below four (4) inches water column
for natural gas or 10 inches water column for liq-
uid propane.
Prior to installation of the generator, the installer
should consult local fuel suppliers or the fire mar-
shal to check codes and regulations for proper instal-
lation. Local codes will mandate correct routing of
gaseous fuel line piping around gardens, shrubs and
other landscaping to prevent any damage.
Special considerations should be given when install-
ing the unit where local conditions include flooding,
tornados, hurricanes, earthquakes and unstable
ground for the flexibility and strength of piping and
their connections.
Use an approved pipe sealant or joint compound on
all threaded fitting.
All installed gaseous fuel piping must be purged and
leak tested prior to initial start-up in accordance with
local codes, standards and regulations.
1.9 FUEL CONSUMPTION
Unit
Nat. Gas LP Vapor
1/2 Load Full Load 1/2 Load Full Load
7/8 kW 77 140 0.94/34 1.68/62
9/10 kW 102 156 1.25/46 1.93/70
12/12 kW 152 215 1.53/56 2.08/76
13/14 kW 156 220 1.56/58 2.30/84
16/16 kW 183 261 1.59/58 2.51/91
16/17 kW 183 261 1.61/59 2.57/94
18/20 kW 206 294 1.89/69 2.90/106
* Natural gas is in cubic feet per hour.
** LP is in gallons per hour/cubic feet per hour.
*** Values given are approximate.
Verify that gas meter is capable of providing enough
fuel flow to include household appliances.
1.9.1 BTU FLOW REQUIREMENTS -
NATURAL GAS
BTU flow required for each unit based on 1000 BTU
per cubic foot.
7kW — 140,000 BTU/Hour•
9kW — 156,000 BTU/Hour•
12kW — 215,000 BTU/Hour•
13kW — 220,000 BTU/Hour•
16kW — 261,000 BTU/Hour•
18kW — 294,000 BTU/Hour•
DANGER
Gaseous fuels such as natural gas and liquid
propane (LP) gas are highly explosive. Even the
slightest spark can ignite such fuels and cause
an explosion. No leakage of fuel is permitted.
Natural gas, which is lighter than air, tends to
collect in high areas. LP gas is heavier than air
and tends to settle in low areas.
Section 1 — General Information
Air-cooled Generators
8

9
NOTE:
A minimum of one approved manual shut-off valve
must be installed in the gaseous fuel supply line.
The valve must be easily accessible. Local codes
determine the proper location.
1.10 RECONFIGURING THE
FUEL SYSTEM
1.10.1 8 KW, 410CC ENGINE
To reconfigure the fuel system from NG to LP, follow
these steps (Figure 1.4):
NOTE:
The primary regulator for the propane supply is
NOT INCLUDED with the generator. A fuel pres-
sure of 10 to 12 inches of water column (0.36 to
0.43 psi) to the fuel inlet of the generator MUST
BE SUPPLIED.
1. Turn off the main gas supply (if connected).
2. Open the roof and remove the door.
3. Remove the battery (if installed).
4. Take the plastic T-handle fuel selector in the poly
bag supplied with the generator.
5. Locate the selector knob on the air box cover,
behind the yellow air filter door and power
bulge. The unit comes from the factory in the NG
(Natural Gas) position. Grasping the T-handle,
insert the pin end into the hole in the selector
knob and pull out to overcome spring pressure
and then twist clockwise 90 degrees and allow
the selector to return in once aligned with the LP
(Liquid Propane) position.
6. Save this tool with the Owner's Manual.
7. Install the battery, door and close the roof.
8. Reverse the procedure to convert back to natural
gas.
Figure 1.4 – Fuel Selector
NOTE:
Use an approved pipe sealant or joint compound
on all threaded fittings to reduce the possibility
of leakage.
1.10.2 10, 12, 14, 16, 17 AND 20KW, V-TWIN
ENGINES
To reconfigure the fuel system from NG to LP, follow
these steps: NOTE:
The primary regulator for the propane supply is
NOT INCLUDED with the generator. A fuel pres-
sure of 10 to 12 inches of water column (0.36 to
0.43 psi) to the fuel inlet of the generator MUST
BE SUPPLIED.
1. Open the roof.
2. For 10kW units: Loosen clamp and slide back
the air inlet hose.
Slide fuel selector on carburetor out towards the• back of the enclosure (Figures 1.5 and 1.6).
Return the inlet hose and tighten clamp secure-• ly.
For 12, 14, 16, 17 and 20kW units: remove the air
cleaner cover.
Slide the selector lever out towards the back of• the enclosure (Figures 1.7 and 1.8).
Return the air cleaner cover and tighten the two• thumb screws.
Figure 1.5 - 10kW, GT-530 (Inlet Hose Slid Back)
Fuel Selection
Lever - "In"
Position for
Natural Gas
Fuel
3. Close the roof.
4. Reverse the procedure to convert back to natural
gas.
Section 1 — General Information
Air-cooled Generators

10
Figure 1.6 - 10kW, GT-530 (Inlet Hose Slid Back)
Fuel Selection
Lever - "Out"
Position for
Liquid Propane
(Vapor) Fuel
Figure 1.7 - 12, 14, 16, 17, & 20kW,
GT-990/GT-999 (Airbox Cover Removed)
Fuel Selection Lever - "In" Position for Natural Gas Fuel
Figure 1.8 - 12, 14, 16, 17, & 20kW,
GT-990/GT-999 (Airbox Cover Removed)
Fuel Selection Lever - "Out" Position for Liquid Propane
(Vapor) Fuel
1.11 LOCATION
1.11.1 GENERATOR
Install the generator set, in its protective enclosure,
outdoors, where adequate cooling and ventilating air
is always available (Figure 1.9). Consider these fac-
tors:
The installation of the generator• must comply
strictly with NFPA 37, NFPA 54, NFPA 58, and
NFPA 70 standards.
Install the unit where air inlet and outlet open-• ings will not become obstructed by leaves, grass,
snow, etc.. If prevailing winds will cause blowing
or drifting, consider using a windbreak to protect
the unit.
Install the generator on high ground where water• levels will not rise and endanger it.
Allow sufficient room on all sides of the generator• for maintenance and servicing. This unit must be
installed in accordance with current applicable
NFPA 37 and NFPA 70 standards; as well as any
other federal, state and local codes for minimum
distances from other structures. DO NOT install
under wooden decks or structures unless there is
at least four (4) feet of clearance above the genera-
tor, three (3) feet of clearance on sides and front,
and 18 inches of clearance at back of unit.
Install the unit where rain gutter down spouts,• roof run-off, landscape irrigation, water sprinklers
or sump pump discharge does not flood the unit
or spray the enclosure, including any air inlet or
outlet openings.
Install the unit where services will not be affected• or obstructed, including concealed, underground
or covered services such as electrical, fuel, phone,
air conditioning or irrigation.
Where strong prevailing winds blow from one• direction, face the generator air inlet openings to
the prevailing winds.
Figure 1.9 – Generator Clearances
Section 1 — General Information
Air-cooled Generators

11
Install the generator as close as possible to the fuel• supply, to reduce the length of piping.
Install the generator as close as possible to the• transfer switch. REMEMBER THAT LAWS OR
CODES MAY REGULATE THE DISTANCE AND
LOCATION.
The genset must be installed on a level surface.• The base frame must be level within two (2) inches
all around.
The generator is typically placed on pea gravel or• crushed stone. Check local codes if a concrete slab
is required. If a concrete base slab is required, all
federal, state and local codes should be followed.
Special attention should be given to the concrete
base slab which should exceed the length and
width of the generator by a minimum of six (6)
inches (0.152 meters) on all sides.
The engine exhaust fumes contain carbon mon-
oxide, which can be DEADLY. This dangerous
gas, if breathed in sufficient concentrations,
can cause unconsciousness or even death. This
exhaust system must be installed properly, in
strict compliance with applicable codes and stan-
dards. Following installation, do nothing that
might render the system unsafe or in noncompli-
ance with such codes and standards.
• Operate the generator outdoors ONLY.
• Keep exhaust gases from entering a confined area
through windows, doors, ventilation or other
openings (Figure 1.9).
1.11.2 TRANSFER SWITCH (if included)
1.11.2.1 8, 10, 12, 14, 16, 17 and 20kW Units
(if equipped)
The transfer switch that may have shipped inside
the carton with the 8, 10, 12, 14, 16 or 17kW gen-
erator is enclosed in a NEMA 1 (indoor rated only)
enclosure. The transfer switch that may have shipped
with the 20kW generator is enclosed in a NEMA 3R
(indoor/outdoor rated) enclosure.
Install the transfer switch indoors on a firm, sturdy• supporting structure.
To prevent switch distortion, level the switch if• necessary. This can be done by placing washers
between the switch enclosure and mounting sur-
face.
Never install the switch where water or any corro-• sive substance might drip onto the enclosure.
Protect the switch at all times against excessive• moisture, dust, dirt, lint, construction grit and
corrosive vapors.
If the AUTO/OFF/MANUAL switch is not set to its
OFF position, the generator can crank and start
as soon as the battery cables are connected. If
the utility power supply is not turned off, spark-
ing can occur at the battery posts and cause an
explosion.
1.12 BATTERY REQUIREMENTS
See the Specifications section for correct battery size
and rating.
1.13 BATTERY INSTALLATION
Fill the battery with the proper electrolyte fluid if
necessary and have the battery fully charged before
installing it.
Before installing and connecting the battery, complete
the following steps:
1. Set the generator's AUTO/OFF/MANUAL switch to
OFF.
2. Turn off utility power supply to the transfer
switch.
3. Remove the 7.5A fuse from the generator control
panel.
Battery cables were factory connected at the genera-
tor (Figure 1.10). Connect cables to battery posts as
follows:
4. Connect the red battery cable (from starter con-
tactor) to the battery post indicated by a positive,
POS or (+).
5. Connect the black battery cable (from frame
ground) to the battery post indicated by a nega-
tive, NEG or (—).
Figure 1.10 – Battery Cable Connections
Section 1 — General Information
Air-cooled Generators

12
NOTE:
Dielectric grease should be used on battery posts
to aid in the prevention of corrosion.
NOTE:
Damage will result if battery connections are made
in reverse.
NOTE:
In areas where temperatures regularly fall below
10° F (-12° C) it is recommended that a pad type
battery heater be installed to aid in cold climate
starting.
1.14 THE BATTERY
DANGER
Do not dispose of the battery in a fire. The
battery is capable of exploding.
A battery presents a risk of electrical shock
and high short circuit current. The following pre-
cautions are to be observed when working on
batteries:
• Remove the 7.5A fuse from the generator control
panel.
• Remove watches, rings or other metal objects;
• Use tools with insulated handles;
• Wear rubber gloves and boots;
• Do not lay tools or metal parts on top of the
battery; and
• Disconnect charging source prior to connecting or
disconnecting battery terminals.
Do not open or mutilate the battery. Released
electrolyte has been known to be harmful to the
skin and eyes, and to be toxic.
The electrolyte is a dilute sulfuric acid that is
harmful to the skin and eyes. It is electrically
conductive and corrosive.
The following procedures are to be observed:
• Wear full eye protection and protective clothing;
• Where electrolyte contacts the skin, wash it off
immediately with water;
• Where electrolyte contacts the eyes, flush thor-
oughly and immediately with water and seek
medical attention; and
• Spilled electrolyte is to be washed down with an
acid neutralizing agent. A common practice is to
use a solution of 1 pound (500 grams) bicarbonate
of soda to 1 gallon (4 liters) of water. The bicar-
bonate of soda solution is to be added until the
evidence of reaction (foaming) has ceased. The
resulting liquid is to be flushed with water and the
area dried.
Lead-acid batteries present a risk of fire because
they generate hydrogen gas. The following
procedures are to be followed:
• DO NOT SMOKE when near the battery;
• DO NOT cause flame or spark in battery area; and
• Discharge static electricity from body before touch-
ing the battery by first touching a grounded metal
surface.
Be sure the AUTO/OFF/MANUAL switch is set to
the OFF position before connecting the battery
cables. If the switch is set to AUTO or MANUAL,
the generator can crank and start as soon as the
battery cables are connected.
Be sure the utility power supply is turned off
and the 7.5A fuse is removed from the genera-
tor control panel, or sparking may occur at the
battery posts as the cables are attached and
cause an explosion.
Servicing of the battery is to be performed or super-
vised by personnel knowledgeable of batteries and
the required precautions. Keep unauthorized person-
nel away from batteries.
See the Specifications section for the correct size
and rating when replacing the battery. Have these
procedures performed at the intervals specified in
the “Service Schedule.” A negative ground system is
used. Battery connections are shown on the wiring
diagrams. Make sure the battery is correctly connect-
ed and terminals are tight. Observe battery polarity
when connecting the battery to the generator set.
1.15 BATTERY CHARGER
NOTE:
These generators DO NOT contain an internal bat-
tery charger.
NOTE:
The manufacturer provides a battery trickle char-
ger that is active when the unit is set up for auto-
matic operation. With the battery installed and
utility power source voltage available to the trans-
fer switch, the battery receives a trickle charge
to prevent self-discharge. The trickle charger is
designed to help extend the life of the battery by
maintaining the battery. The trickle charge feature
cannot be used to recharge a discharged battery.
For units shipped with a transfer switch/load center,
the battery charger is pre-installed in the transfer
switch enclosure.
For units shipped without a transfer switch/load cen-
ter, a separate battery charger module is included
with the generator.
(For battery charger installation, see the Generator
Install Guidelines and Battery Charger Instructions
included with the unit.)
Section 1 — General Information
Air-cooled Generators

13
Section 2 — Post Installation Start-up and Adjustments
Air-cooled Generators
2.1 BEFORE INITIAL START-UP
NOTE:
These units have been run and tested at the fac-
tory prior to being shipped and do not require any
type of break-in.
Before starting, complete the following:
1. Set the generator’s main circuit breaker to its
OFF (or OPEN) position.
2. Set the generator's AUTO/OFF/MANUAL switch to
the OFF position.
3. Turn OFF all breakers on the load center of the
transfer box (T1 and T2).
4. Turn OFF all loads connected to the transfer
switch terminals T1 and T2.
5. Check the engine crankcase oil level and, if neces-
sary, fill to the dipstick FULL mark with the rec-
ommended oil. Do not fill above the FULL mark.
6. Check the fuel supply. Gaseous fuel lines must
have been properly purged and leak tested in
accordance with applicable fuel-gas codes. All
fuel shutoff valves in the fuel supply lines must
be open.
During initial start up only, the generator may exceed
the normal number of start attempts and experience
an “over crank” fault (See the "Overcrank" section).
This is due to accumulated air in the fuel system dur-
ing installation. Reset the control board and restart
up to two more times, if necessary. If unit fails to
start, contact the local dealer for assistance.
Never operate the engine with the oil level
below the “Add” mark on the dipstick. Doing
this could damage the engine.
2.2 CHECK TRANSFER SWITCH
OPERATION
Refer to the "Manual Transfer Operation" section, of
the owner’s manual for procedures.
DANGER
Do not attempt manual transfer switch opera-
tion until all power voltage supplies to the
transfer switch have been positively turned off.
Failure to turn off all power voltage supplies
will result in extremely hazardous and possibly
fatal electrical shock.
2.3 ELECTRICAL CHECKS
Complete electrical checks as follows:
1. Set the generator's main circuit breaker to its
OFF (or OPEN) position.
2. Set the generator's AUTO/OFF/MANUAL switch to
the OFF position.
3. Turn OFF all breakers on the load center of the
transfer box (T1 and T2).
4. Turn on the utility power supply to the transfer
switch using the means provided (such as a utility
main line circuit breaker).
DANGER
The transfer switch is now electrically “hot.”
Contact with “hot” parts will result in extremely
hazardous and possibly fatal electrical shock.
Proceed with caution.
5. Use an accurate AC voltmeter to check utility
power source voltage across transfer switch ter-
minals N1 and N2. Nominal line-to-line voltage
should be 240 volts AC.
6. Check utility power source voltage across termi-
nals N1 and the transfer switch neutral lug; then
across terminal N2 and neutral. Nominal line-to-
neutral voltage should be 120 volts AC.
7. When certain that utility supply voltage is compat-
ible with transfer switch and load circuit ratings,
turn OFF the utility power supply to the transfer
switch.
8. On the generator panel, set the Auto/Off/ Manual
switch to MANUAL. The engine should crank and
start.
9. Let the engine warm up for about five minutes to
allow internal temperatures to stabilize. Then, set
the generator’s main circuit breaker to its ON (or
closed) position.
DANGER
Proceed with caution! Generator power voltage
is now supplied to the transfer switch. Contact
with live transfer switch parts will result in dan-
gerous and possibly fatal electrical shock.
10. Connect an accurate AC voltmeter and a frequen-
cy meter across transfer switch terminal lugs E1
and E2. 8kW voltage should be 230-240 volts at
a frequency of 61-63 Hertz. 12, 14, 16, 17 and
20kW voltage should be 247-249 at a frequency
of 59.5-60.5 Hertz. 10kW voltage should be
220-230 volts at a frequency of 59.5-60.5 Hertz.
11. Connect the AC voltmeter test leads across ter-
minal lugs E1 and neutral; then across E2 and
neutral. In both cases, voltage reading should be
121-126 volts AC (8kW), and 125-126 volts AC
(10, 12, 14, 16, 17 and 20kW).

14
12. Set the generator’s main circuit breaker to its
OFF (or OPEN) position. Let the engine run at no-
load for a few minutes to stabilize internal engine
generator temperatures.
13. Set the generator's AUTO/OFF/MANUAL switch to
OFF. The engine should shut down.
NOTE:
It is important not to proceed until certain that
generator AC voltage and frequency are correct
and within the stated limits. Generally, if both AC
frequency and voltage are high or low, the engine
governor requires adjustment* (*GH410 only). If
frequency is correct, but voltage is high or low, the
generator’s voltage regulator requires adjustment.
2.4 GENERATOR TESTS UNDER LOAD
To test the generator set with electrical loads applied,
proceed as follows:
1. Set generator’s main circuit breaker to its OFF
(or OPEN) position.
2. Turn OFF all breakers on the load center of the
transfer box (T1 and T2).
3. Set the generator's AUTO/OFF/MANUAL switch to
OFF.
4. Turn OFF the utility power supply to the transfer
switch, using the means provided (such as a util-
ity main line circuit breaker).
Do not attempt manual transfer switch opera-
tion until all power voltage supplies to the
transfer switch have been positively turned off.
Failure to turn off all power voltage supplies
will result in extremely hazardous and possibly
fatal electrical shock.
5. Manually set the transfer switch to the STANDBY
position, i.e., load terminals connected to the
generator's E1/E2 terminals. The transfer switch
operating lever should be down.
6. Set the generator's AUTO/OFF/MANUAL switch
to MANUAL. The engine should crank and start
immediately.
7. Let the engine stabilize and warm up for a few
minutes.
8. Set the generator’s main circuit breaker to its ON
(or CLOSED) position. Loads are now powered
by the standby generator.
9. Turn ON the load center of the transfer switch
(T1 and T2).
10. Connect an accurate AC voltmeter and a frequen-
cy meter across terminal lugs E1 and E2.
8kW voltage should be greater than 230 volts and• frequency should be greater than 58 Hz.
10,• 12, 14, 16, 17 and 20kW voltage should be
greater than 240 volts and frequency should be
60 Hz.
11. Let the generator run at full rated load for 20-30
minutes. Listen for unusual noises, vibration or
other indications of abnormal operation. Check
for oil leaks, evidence of overheating, etc.
12. When testing under load is complete, turn OFF
electrical loads.
13. Set the generator's main circuit breaker to its
OFF (or OPEN) position.
14. Let the engine run at no-load for a few minutes.
15. Set the AUTO/OFF/MANUAL switch to OFF. The
engine should shut down.
2.5 CHECKING AUTOMATIC
OPERATION
To check the system for proper automatic operation,
proceed as follows:
1. Set generator’s main circuit breaker to its OFF
(or OPEN) position.
2. Check that the AUTO/OFF/MANUAL switch is set
to OFF.
3. Turn OFF the utility power supply to the transfer
switch, using means provided (such as a utility
main line circuit breaker).
4. Manually set the transfer switch to the UTILITY
position, i.e., load terminals connected to the util-
ity power source side.
5. Turn ON the utility power supply to the transfer
switch, using the means provided (such as a util-
ity main line circuit breaker).
6. Set the generator's main circuit breaker to its ON
(or CLOSED) position.
7. Set the AUTO/OFF/MANUAL switch to AUTO. The
system is now ready for automatic operation.
8. Turn OFF the utility power supply to the transfer
switch.
With the AUTO/OFF/MANUAL switch at AUTO, the
engine should crank and start when the utility source
power is turned OFF after a 10 second delay. After
starting, the transfer switch should connect load
circuits to the standby side after a five (5) second
delay. Let the system go through its entire automatic
sequence of operation.
With the generator running and loads powered by
generator AC output, turn ON the utility power supply
to the transfer switch. The following should occur:
After about 15 seconds, the switch should transfer• loads back to the utility power source.
About one minute after re-transfer, the engine• should shut down.
Section 2 — Post Installation Start-up and Adjustments
Air-cooled Generators

15
2.6 ENGINE GOVERNOR ADJUSTMENT
If both AC frequency and voltage are correspondingly
high or low, adjust the engine governor as follows:
2.6.1 8 KW UNITS
The engine must be OFF to perform steps 1 and
2.
1. Loosen the governor clamp bolt (Figure 2.1).
2. Hold the governor lever at its wide open throttle
position (clockwise), and rotate the governor
shaft clockwise as far as it will go. Then, tighten
the governor lever clamp bolt to 70 inch-pounds
(8 N-m).
Figure 2.1 — Engine Governor Adjustment
Single Cylinder Engines
GOVERNOR
SHAFT
PRIMARY
ADJUST
SCREW
GOVERNOR
CLAMP
BOLT
SECONDARY
ADJUST SCREW
3. Start the generator; let it stabilize and warm up
at no-load.
4. Connect a frequency meter across the generators
AC output leads.
5. Turn the primary adjust screw to obtain a fre-
quency reading of 61.5 Hertz. Turn the secondary
adjust screw to obtain a frequency of 62.5 Hz.
2.6.2 12, 14, 16, 17 & 20KW UNITS
NOTE:
All V-twin units DO NOT require an engine gover-
nor adjustment due to their design.
2.6.3 ADDITIONAL CORROSION
PROTECTION
Periodically spray all engine linkage parts and brack-
ets with corrosion inhibiting spray such as WD-40 or
a comparable product.
2.7 VOLTAGE REGULATOR
ADJUSTMENT
2.7.1 8 & 10KW UNITS
Due to the brushless design of these two alternators,
no voltage regulator is used and therefore no voltage
adjustment is required.
2.7.2 12,14, 16, 17 & 20KW UNITS
With the frequency between 59.5 -60.5 Hertz at no-
load, slowly turn the slotted potentiometer (Figure
2.2) until line voltage reads 247-249 volts.
Figure 2.2 – Voltage Adjustment Potentiometer
Turn to
adjust voltage.
NOTE:
The access panel on top of the control panel must
be removed to adjust the voltage regulator.
NOTE:
The voltage regulator is housed behind the genera-
tor's control panel. The regulator maintains a volt-
age in direct proportion to frequency at a 2-to-1
ratio. For example, at 60 Hertz, line-to-neutral
voltage will be 124 volts.
Section 2 — Post Installation Start-up and Adjustments
Air-cooled Generators

16
3.1 CONTROL PANEL INTERFACE
3.1.1 USING THE AUTO/OFF/MANUAL
SWITCH (FIGURES 3.1 & 3.2)
1. “AUTO” Position – Selecting this switch activates
fully automatic system operation. It also allows
the unit to automatically start and exercise the
engine every seven days with the setting of the
exercise timer (see the Setting the Exercise Timer
section).
2. “OFF” Position – This switch position shuts down
the engine. This position also prevents automatic
operation.
3. “MANUAL” Position – Set the switch to MANUAL
to crank and start the engine. Transfer to standby
power will not occur unless there is a utility fail-
ure.
Figure 3.1 – 8kW Generator Control Panel
SET
EXERCISE
SYSTEM READY
LOW BATTERY
LOW OIL PRESSURE
HIGH OIL TEMPERATURE
OVERSPEED
RPM SENSOR LOSS
OVERCRANK
With the switch set to AUTO, the engine may
crank and start at any time without warning.
Such automatic starting occurs when utility
power source voltage droops below a preset
level or during the normal exercise cycle. To
prevent possible injury that might be caused
by such sudden starts, always set the switch to
OFF and remove the fuses before working on or
around the generator or transfer switch. Then,
place a “DO NOT OPERATE” tag on the genera-
tor panel and on the transfer switch.
Figure 3.2 – 10/12/14/16/17 & 20kW Generator
Control Panel
ENTER
ECS
3.1.2 SETTING THE EXERCISE TIMER
This generator is equipped with an exercise timer.
Once it is set, the generator will start and exercise
every seven days, on the day of the week and at the
time of day specified. During this exercise period,
the unit runs for approximately 12 minutes and then
shuts down. Transfer of loads to the generator out-
put does not occur during the exercise cycle unless
utility power is lost.
8kW
A switch on the control panel (see Figure 3.1) per-
mits selection of the day and time for the system to
exercise. At the chosen time, perform the following
sequence to select the desired day and time of day
the system will exercise. Remember seasonal time
changes affect the exercise settings.
1. Verify that the AUTO/OFF/MANUAL switch is set
to AUTO.
2. Press and hold the “Set Exercise” switch for sev-
eral seconds. All the red LED’s will stop flashing
immediately and the generator will start.
3. The generator will start and run for approximate-
ly 12 minutes and then shut down. The exerciser
is now set to run at this time of day each week.
Example: If the “Set Exercise” pressed on Saturday
afternoon at 2:00 p.m., the generator will start and
exercise for approximately 12 minutes every Saturday
at 2:00 p.m.
Section 3 — Operation
Air-cooled Generators