How it Works
Briggs & Stratton
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1461-2
User Manual
44 pgs2.62 Mb0
Table of contents
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Briggs & Stratton 1535-1, 1461-2 User Manual

For Models 1461-2 and 1535-1 Manual No. 189141 Revision 2 (12/04/2001)
Visit our Generac website: www.generac-portables.com
NOT INTENDED FOR USE AS PRIMARY POWER IN PLACE OF UTILITY
OR IN LIFE-SUPPORT APPLICATIONS
OWNER’S MANUAL
8000/10000 Watt
Backup Power System
with Automatic Power Transfer Switch
Owner’s Manual
2

TABLE OF CONTENTS

TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Assistance . . . . . . . . . . . . . . . . . . . . . . . . 4
For the Home or Business Owner: . . . . . . . . . . 4
For the Installing Dealer/Contractor: . . . . . . . . . 4
OWNER ORIENTATION . . . . . . . . . . . . . . . . . . . . . . . . 4
Fuel Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power Decrease at High Altitude or High
Temperature . . . . . . . . . . . . . . . . . . . . 5
Generator Location . . . . . . . . . . . . . . . . . . . . . . . . . 5
Generator Clearances . . . . . . . . . . . . . . . . . . . . . . . 5
Essential Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Essential Circuit Selection . . . . . . . . . . . . . . . . . 7
UNPACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 8
Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . . . . 8
KNOW YOUR BACKUP GENERATOR . . . . . . . . . . . . . 9
KNOW YOUR SYSTEM CONTROL PANEL . . . . . . . . . 10
Access Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
To remove an access door: . . . . . . . . . . . . . . . 11
To install an access door: . . . . . . . . . . . . . . . . . 11
BEFORE INITIAL START-UP . . . . . . . . . . . . . . . . . . . . . 12
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Oil Considerations . . . . . . . . . . . . . . . . . . . . . 12
Battery Connection . . . . . . . . . . . . . . . . . . . . . . . . 12
Gaseous Fuel System . . . . . . . . . . . . . . . . . . . . . . . 12
The AUTO/OFF/MANUAL Switch . . . . . . . . . . . . . 12
AUTOMATIC OPERATION . . . . . . . . . . . . . . . . . . . . . 13
Checking Automatic Operation . . . . . . . . . . . . . . . 13
Stopping the System . . . . . . . . . . . . . . . . . . . . . . . . 13
Setting Exercise Timer . . . . . . . . . . . . . . . . . . . . . . 13
MANUAL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . 14
Transfer to Generator Power . . . . . . . . . . . . . . . . . 14
Transfer Back to Utility Power . . . . . . . . . . . . . . . . 14
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Fault Detection System . . . . . . . . . . . . . . . . . . . . . 15
Reset Fault Detection System . . . . . . . . . . . . . 15
No Blinks - ‘Dead’ Unit . . . . . . . . . . . . . . . . . . 15
Low Battery Voltage . . . . . . . . . . . . . . . . . . . . . 15
Low Oil Pressure . . . . . . . . . . . . . . . . . . . . . . . 15
Low Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Engine Fail To Start . . . . . . . . . . . . . . . . . . . . . 16
Low Frequency . . . . . . . . . . . . . . . . . . . . . . . . 16
Engine Overspeed . . . . . . . . . . . . . . . . . . . . . . 16
Oil Temperature High . . . . . . . . . . . . . . . . . . . 16
Power During Fault Condition . . . . . . . . . . . . . . . . 16
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . 17
Generator Maintenance . . . . . . . . . . . . . . . . . . . . . 17
To Clean the Generator: . . . . . . . . . . . . . . . . . 17
Engine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 18
Checking Oil Level . . . . . . . . . . . . . . . . . . . . . 18
Changing the Oil and Oil Filter . . . . . . . . . . . . 18
Replace the Spark Plugs . . . . . . . . . . . . . . . . . . 19
Service Air Cleaner . . . . . . . . . . . . . . . . . . . . . 19
Inspect Spark Arrester Screen . . . . . . . . . . . . . 20
Engine Governed Speed . . . . . . . . . . . . . . . . . . 20
Valve Lash . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Carburetor Adjustments . . . . . . . . . . . . . . . . . 20
If You Call the Factory: . . . . . . . . . . . . . . . . . . . . . . 20
STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . 21
DIAGRAMS, EXPLODED VIEWS, PARTS LISTS. . . . . 22-42
EMISSION CONTROL SYSTEM WARRANTY . . . . . . . 43
POWER SYSTEM WARRANTY . . . . . . . . . . . . . . . . . . . 44
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
Owner’s Manual
3

SAFETY RULES

• Your Briggs & Stratton Backup Power System produces dangerous electrical voltages that can cause a fatal electrical shock.Avoid contact with bare wires, terminals and connections at all times while the unit is running. Ensure that all the appropriate covers, guards and barriers are in place before operating the generator. If you must work around a unit while it is operating, stand on an insulated dry surface to reduce shock hazard.
• In case of an accident caused by electrical shock immediately shut down the source of electrical power. If this is not possible, attempt to free the victim from the live conductor.
DANGER! Avoid direct contact with the
victim. Use a non-conducting implement, such as a
rope or board to free the victim from the live conductor. If the victim is unconscious, apply first aid and get immediate medical help.
• Your Backup Power System is powered by gaseous fuel. Liquid Propane (LP) or natural gas is extremely Explosive! Do Not smoke around the generator.Wipe up any oil spills immediately. Ensure that no combustible materials are left in the generator compartment. Keep the area near the generator clean and free of debris.
• Do Not use the generator or any of its parts as a step. Stepping on the unit can stress and break parts.This may result in dangerous operating conditions from leaking exhaust gases, fuel leakage, oil leakage, etc.
CAUTION! After the installation of your Backup
Power System is complete, the generator may crank and start without warning any time there is a power interruption.To prevent possible injury, before working on the equipment, always set the AUTO/OFF/MANUAL switch to OFF and remove the 15 Amp fuse.
• Do Not handle any kind of electrical device while standing in water.Avoid electrical devices while barefoot or while hands or feet are wet.
• Remain alert at all times while working on this
equipment. Never work on the equipment when you are physically or mentally fatigued.
• An adequate, unobstructed flow of cooling and ventilating
air is critical for generator operation. Do Not alter the installation or permit even partial blockage of ventilation provisions, as this can seriously affect safe operation of the generator.The Oil Service door and/or the Control Panel door must be installed whenever the unit is running.
• Before performing any maintenance on the generator, remove the 15 Amp fuse AND disconnect the battery NEGATIVE, NEG, or (-) cable.
• Do Not operate engine if smell of fuel is present or other explosive conditions exist.
• Do Not tamper with governor springs, links or other parts to increase engine speed.
• Do Not touch hot muffler, engine cylinder, or engine exhaust port which can cause burns.
• Do Not start engine with air cleaner or air cleaner cover removed.
CAUTION! Despite the safe design of the
Backup Power System, operating this equipment imprudently, neglecting its maintenance or being careless can cause possible injury or death. Permit only responsible and capable persons to operate and/or maintain this equipment.
NOTE:Your generator is equipped with a spark arrester muffler. The spark arrester must be maintained in effective working order by the owner/operator. In the State of California, a spark arrester is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands.
The manufacturer cannot possibly anticipate every possible circumstance that might involve a hazard.The warnings in this manual, and the tags and decals affixed to the unit are, therefore, not all-inclusive. If you use a procedure, work method or operating technique that the manufacturer does not specifically recommend, you must satisfy yourself that it is safe for you and others.You must also make sure that the procedure, work method or operating technique that you choose does not render the generator unsafe.
Only qualified electricians and gaseous fuel
technicians should attempt installation of this
system, which must strictly comply with
applicable codes, standards and regulations.
WARNING!
Owner’s Manual
4

INTRODUCTION

Congratulations on your purchase of a Briggs & Stratton
Backup Power System (BPS).Your BPS was designed to provide automatic auxiliary electrical power for the duration of normal power interruption. It is not intended for use as primary power in place of utility nor for use in life-support applications.The generator unit has been engineered and tested to exacting standards of performance and reliability and is equipped with a UL® listed Automatic Power Transfer Switch.
Generac Portable Products has made every effort to provide for a safe, streamlined and cost-effective installation. Because each installation is unique, it is impossible to know of and advise the trade of all conceivable procedures and methods by which installation might be achieved. Neither could we know of possible hazards and/or the results of each method or procedure. For these reasons,
Only current qualified electrical and
plumbing contractors should attempt
BPS installations.
Installations must strictly comply with
all applicable codes, industry standards
and regulations.
Your Briggs & Stratton Backup Power System is supplied with this “Owners Manual” and a separate “Installation Manual” (Generac part number 184957).These are both important documents and should be retained by the owner after the installation has been completed.

Installation Assistance

For the Home or Business Owner:
To help you make informed choices and communicate effectively with your installation contractor(s),
Read and understand the
Owner Orientation Section of this manual
BEFORE
contracting or starting
your BPS installation.
To arrange for proper installation, contact the store at which you purchased your Briggs & Stratton Backup Power System, your dealer,or your utility power provider.
The BPS Warranty is VOID unless the system
is installed by certified electrical and
plumbing professionals.
For the Installing Dealer/Contractor:
For most applications, the Installation manual contains all
the information required to properly install and start the Backup Power System.This Owner’s Manual describes essential circuit selection, routine operation and owner maintenance procedures.
If you need more information, call 920-674-3750,
extension 2716, between 8:00 AM and 5:00 PM CT.
The Emission Control System for this generator is warranted for standards set by the U.S. Environmental Protection Agency and by the California Air Resources Board (CARB). For warranty information refer to the back of this Owner’s manual.

OWNER ORIENTATION

This section provides Backup Power System owners with the information necessary to achieve the most satisfactory and cost effective installation possible.
The illustrations are for typical circumstances and are meant to familiarize you with the installation options available with your Backup Power System.A thorough understanding of these options will provide fundamental control over the cost of your installation, as well as ensure your final satisfaction and security.
Local codes, appearance, noise levels, fuel types, and distances are the factors that must be considered when negotiating with an installation professional. Remember that as the distance from the existing electrical service and gaseous fuel supply increases, equal compensations in piping and wiring materials must be allowed for.This is necessary to comply with local codes and overcome electrical voltage drops and gaseous fuel pressure drops.
The factors mentioned above will have a direct affect on the overall price of your Backup Power System installation.
Owner’s Manual
5
NOTE: In some areas you may need to acquire electrical permits for installing the Backup Power System,building permits for installing gas lines, and permits for noise allowances.Your installer should check your local codes AND obtain the permits before installing the system.

Fuel Factors

An important consideration affecting the entire installation is the type of fuel used by your Backup Power System.The system was factory tested and adjusted using natural gas as a fuel. Liquid propane (LP) may also be used as a fuel (see the Installation Manual).
Although there are specific factors that are inherent to each of these fuels, your location and the duration of possible utility interruptions should guide your selection of fuel type. For urban installations, Natural Gas (if available) should be your fuel of choice. For remote installations, a Liquefied Petroleum (LP) tank might better meet your needs.
For proper engine function, the following fuel guidelines are recommended:
• Use clean, dry fuel, free of moisture or any particulate material. Using fuels outside the following recommended values may cause performance problems.
In engines set up to run on propane (LP) gas, commercial grade HD5 propane with a minimum fuel energy of 2500 BTUs/ft
3
with maximum propylene
content of 5% and butane and heavier gas content of
2.5% and minimum propane content of 90%.
CAUTION!This equipment is equipped with an
automatic safety gas “fuel shut-off” valve. Do Not operate the equipment if the “fuel shut-off” valve is missing or inoperative.
Power Decrease at High Altitude or High Temperature
Air density is less at high altitudes, resulting in less available engine power. Specifically, engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and 1% for each 10° F (5.6°C) above 77°F (25°C). Make sure you and your installer consider these factors when determining total generator load.

Generator Location

The actual physical location of your backup generator has a direct affect on:
1. The amount of plumbing required to fuel your generator.
2. The amount of wiring required to control and connect your generator.
NOTE: Specific location guidelines are discussed in the Installation Manual.Acquaint yourself with that information and confer with your installer. Be sure to ask how your site might affect installation costs and compliance with local codes and standards.

Generator Clearances

The generator enclosure must be a minimum of 3 ft. (92 cm) from combustible material (NFPA 37). Leave at least 3 ft. (92 cm) all around the enclosure for access to the inside of the enclosure (NEC Art. 110-26a, Art. 110-26b).
The unit’s exhaust port must be at least 5 ft. (152 cm) from any building opening (window, door,vent etc.), and the exhaust must not be able to accumulate in any occupied area (Figure 1).
Figure 1 — Backup Power System Clearances
Exhaust port must be
5 ft (152 cm) minimum
distance from building
openings
Exhaust
Port
Owner’s Manual
6
Figure 2 identifies system components and shows typical installation details.Variations to this illustration are related to code issues, piping distances and materials.

Essential Circuits

As a Backup Power System owner, it is important that you clearly identify the circuits in your building that are "essential" to you. Because the Backup Power System is equipped with an Automatic Transfer Switch, your selection of essential circuits will be transferred to the Backup Power System within 15 seconds (+/- 5 seconds).
It is important that your installer understand which
circuits you want to include as "Essential Circuits". Depending on the power consumed by these circuits,most or all of them
can be switched to the Backup Power System for the duration of normal power interruption.
The essential circuits are gathered in a special circuit breaker box,referred to as the Essential Circuit “sub­panel”, that is connected by conduit to the transfer switch. This breaker box is provided by the installer because it allows him to use the brand that is most compatible with your existing electrical service components.
The wattage reference guide shown in Figure 3 will assist you with your decision-making process.It provides the wattage used by many ordinary household devices. Use it as a guide when selecting your essential circuits. Review this information with your installer and ask about any technical considerations that might affect the cost of your installation.
Power Lead
Connections
NEUTRAL to White wire
GND to chassis
Control Signal
Connections
Automatic
Power
Transfer
Switch
Rear of
Control
Panel
Backup Power
System Generator
Power Leads
Signal Leads
Main
Distribution
Panel
Essential
Circuit
Sub-panel
Utility Power
Meter
Figure 2 — Typical Installation Diagram for Backup Power System
Owner’s Manual
7
Essential Circuit Selection
When selecting the essential circuits that will be switched to “Backup Power,” it is important that the sum of the combined circuit loads does not exceed the wattage/amperage capacity of the generator. To help you with your selection of essential circuits, please consider the following:
Add up the total wattage of all electrical devices to be connected at one time.This total should NOT be greater than the generator’s wattage capacity.
The rated wattage of lights can be taken from light bulbs. The rated wattage of tools, appliances and motors can usually be found on a data plate or decal affixed to the device.
If the appliance, tool or motor does not give wattage, multiply 120 Volts times the ampere rating to determine watts (Volts x Amps = Watts).
Some electric motors (induction types) require about three times more watts of power for starting than for running.This surge lasts for only a few seconds. Be sure you allow for this high starting wattage when selecting electrical devices that will be energized by the backup power system:
Figure the watts required to start the largest motor. Add that to the total running watts of all other
connected loads.
This Briggs & Stratton Backup Power System complies with the following “stationary standby power rating”:
The standby power rating is applicable for supplying emergency power for the duration of normal power interruption. No sustained overload capability is available for this rating.
This rating is applicable to installations served by a reliable normal utility source.This rating is only applicable to variable loads with an average load factor of 80% of the standby rating for a maximum of 500 hours of operation per year.The standby rating is only applicable for emergency and standby power where the generator set serves as the backup to the normal utility source.
Use the “Wattage Reference Guide” provided and mark those circuits you consider “critical” or “essential”. Make sure you and your installer consider the system’s altitude above sea level and the ambient temperature range when determining total generator load.
Device
Running
Watts
Air Conditioner (12,000 Btu)* 1700
Air Conditioner (24,000 Btu)* 3800
Air Conditioner (40,000 Btu)* 6000
Battery Charger (20 Amp) 500
Circular Saw (6-1/2") 800 to 1000
Clothes Dryer (Electric)* 5750
Clothes Dryer (Gas)* 700
Clothes Washer* 1150
Coffee Maker 1750
Compressor (1 HP)* 2000
Compressor (1/2 HP)* 1400
Compressor (3/4 HP)* 1800
Curling Iron 700
Dehumidifier* 650
Electric Blanket 400
Electric Range (per element) 1500
Electric Skillet 1250
Freezer* 700
Furnace Fan (3/5 HP)* 875
Garage Door Opener* 500 to 750
Hair Dryer 1200
Hand Drill 250 to 1100
Iron 1200
Jet Pump* 800
Light Bulb 100
Microwave Oven 700 to 1000
Milk Cooler* 1100
Oil Burner on Furnace 300
Oil Fired Space Heater (140,000 Btu) 400
Oil Fired Space Heater (30,000 Btu) 150
Oil Fired Space Heater (85,000 Btu) 225
Radio 50 to 200
Refrigerator 700
Slow Cooker 200
Submersible Pump (1 HP)* 2000
Submersible Pump (1/2 HP)* 1500
Submersible Pump (1-1/2 HP)* 2800
Sump Pump* 800 to 1050
Table Saw (10")* 1750 to 2000
Television 200 to 500
Toaster 1000 to 1650
Figure 3 — Wattage Reference Guide
*Allow three (3) times listed watts for starting device
Owner’s Manual
8

UNPACKING

Refer to the Installation Manual for detailed unpacking instructions, if desired.

Delivery Inspection

After removing the carton, carefully inspect the Backup Generator and Automatic Power Transfer Switch components for any damage that may have occurred during shipment.
IMPORTANT: If loss or damage is noted at time of delivery, have the person(s) making delivery note all damage on the freight bill and affix his signature under the consignor's memo of loss or damage. If loss or damage is noted after delivery, separate the damaged materials and contact the carrier for claim procedures.Missing or damaged parts are not warranted.

Shipment Contents

The Backup Power System is supplied with:
• Backup Power generator
• Pre-attached mounting pad
• Automatic Power Transfer switch
• One 18” flexible fuel hook-up pipe
• Installation manual
• Owner’s manual
• Installation checklist
• Three access door keys
• Four lifting hole plugs
• Oil fill spout
• Touch-up paint
• One spare 15 Amp fuse
Owner’s Manual
9
15 Amp Fuse — Protects the DC control circuits. Air Cleaner — Uses a dry type filter element and foam
precleaner to limit the amount of dirt and dust drawn into the engine.
Battery — 12 Volt DC, 18 Amp-Hour sealed battery provides power to start the engine. Battery receives trickle charge whenever generator is not running.
Control Panel — Used for various test,operation and maintenance functions. See “KNOW YOUR SYSTEM CONTROL PANEL” on the next page.
Engine Label — Identifies engine model and type. Exhaust Port — High-performance muffler lowers engine
noise to comply with most residential codes.
Oil Dip Stick — Used to check the engine oil level. Oil Drain Hose — Provided to facilitate oil changing. Oil Fill Cap — Remove to service the engine with
recommended oil.
Oil Filter — Filters engine oil to prolong system life. Unit Data Decal — Identifies unit by serial number.

KNOW YOUR BACKUP GENERATOR

Read this owner’s manual and safety rules before operating your generator.
Compare the illustrations with your generator to familiarize yourself with the locations of various controls and adjustments. Save this manual for future reference.
Air Cleaner
Oil
Filter
Battery Door Opening
Control Panel Door Opening
Unit Data Decal
Oil Service Door Opening
Exhaust
Port
Oil Dip Stick
Fuel Inlet
Control Panel
(see page 10)
Battery
Oil Drain Hose
Oil Fill Cap
15 Amp Fuse
Engine Label
Owner’s Manual
10
Hour Meter
Circuit
Breaker
Set Exercise
Switch
AUTO/OFF/MANUAL
Switch
Diagnostic
LED
15 Amp
Fuse
15 Amp Fuse — Protects the Backup Power System DC control circuits. If the fuse has ‘blown’ (melted open) or was removed, the engine cannot crank or start. Replace the fuse using only an identical BUS AGC 15A fuse.
AUTO/OFF/MANUAL Switch — This three-position device is the most important control on the system and is used as follows:
•“AUTO” position is the normal operating position. If a
utility power outage is sensed, the system will start the generator, let it reach stable operating speed, then connect generator power to the sub-panel.When utility power is restored, the system reconnects utility power to the sub-panel, lets the engine stabilize internal temperatures, shuts off the generator,and waits for the next utility power outage.While waiting, it maintains battery with trickle charge.
•“OFF” position turns off running generator, takes system
out of Automatic mode and resets any detected faults.
•“MANUAL” position starts the engine but does not
disconnect the sub-panel from utility power. It is used for maintenance or diagnostic functions.
Circuit Breaker — Protects the system from shorts and other over-current conditions. Must be ON to supply power to the Automatic Transfer Switch.
Diagnostic LED — Used for troubleshooting operational problems with the Backup Power System.All fault conditions are described in the section “Fault Detection System”.
Hour Meter — The hour meter records the total number of hours the generator has been running and is used to schedule maintenance tasks.
Set Exercise Switch — Used to set the exercise cycle start time and day-of-the-week. Exercise cycle only occurs in AUTO mode.

KNOW YOUR SYSTEM CONTROL PANEL

Compare this Control Panel illustration with your generator to familiarize yourself with the location of these important controls:
Owner’s Manual
11

Access Doors

The Backup Power System is equipped with an enclosure that has four access doors (Figure 4).The doors are named for a significant component located behind them. Starting with the side that has the fuel connection and proceeding clockwise, the doors are named:
• Oil Service door
• Air Intake door
• Control Panel door
• Battery door Each backup power system is equipped with three identical
keys.These keys fit the locks that secure the oil service and control panel doors.
CAUTION! Do Not operate the backup generator
unless the Oil Service and/or Control Panel doors are installed. Failure to do so will cause overheating.
To remove an access door:
1. Insert a key into the lock of the access door you wish to remove and turn one quarter turn clockwise.
NOTE:The key is retained in the lock when the locks are open.
2. Grasp the door’s lift handle and pull the door upwards until the security pins are free of the lower base.
3. With the security pins free, pull the lift handle outward
(away) from the unit while pulling the door down and out of the upper door channel.The door will come free of the generator enclosure.
The battery door and the air intake door do not have locks or lift handles.They are opened by lifting on the louvers instead of a lift handle. However, you must remove the door lock screw, found directly above the center of the door. Replace the screw to secure the access door.
CAUTION!
Burn Hazard! The exhaust port
can reach a temperature of 600° F during use and remains hot after shutdown. Carelessness could cause severe burns.
To install an access door:
1. Support the door by grasping the lift handle or louver. Guide the top of the door into the generator enclosure.
2. Lift the door up into its upper channel until the security pins clear the sill of the enclosure.
3. Push the lower half of the door into the door recess until it is flush with the sides.
4. Seat the door by pushing it down until the rubber coated security pins engage and the door rests on the mounting sill.
5. If installing a lockable door, turn the key one quarter turn counterclockwise. Remove the key.
Oil Service Door
Fuel Inlet
Exhaust
Port
Air Intake Door
Door Lock
Screw
Door
Lock
Screw
Battery Door
Control Panel Door
Figure 4 — Enclosure Access Doors
Owner’s Manual
12

BEFORE INITIAL START-UP

Engine Oil

This engine is shipped from the factory filled with the recommended oil. Before starting the engine, check oil level and ensure that engine is serviced as described on page 18 in “Checking Oil Level”.
CAUTION! Any attempt to crank or start the
engine before it has been properly serviced with the recommended oil will result in an engine failure that is not covered under warranty.
Oil Considerations
Your Backup Power System is equipped with an engine that has been pre-run at the factory and does not require the traditional “break-in” procedure.
In order to provide a greater “backup” capability, the system is filled with synthetic oil (API SJ/CF 5W-30W).This allows for system operation in the widest range of temperature and climate conditions.
NOTE:The use of synthetic oil DOES NOT alter the required oil change intervals described later in the Maintenance section of this manual.

Battery Connection

The Backup Power System is supplied with a 12Volt DC 18 Amp-Hour sealed rechargeable battery. It is installed in the unit and the battery cables are connected at the factory.The unit’s 15 Amp fuse has been removed for shipping (this prevents the unit from starting).
CAUTION! Do Not install the 15 Amp fuse until
all plumbing and wiring has been completed and inspected. Failure to install the fuse as described in the Installation Manual could cause the engine to start.
NOTE:With the battery installed, utility power supplied to the Automatic Transfer Switch, and the unit in AUTO mode, the battery receives a trickle charge while the engine is not running.The trickle charger cannot be used to recharge a battery that is completely discharged.

Gaseous Fuel System

• Ensure that all fuel pipe connections are tight, secure and
without leaks.
• Ensure that all shutoff valves are OPEN and that
adequate pressure is available.
If you smell ‘raw’ gaseous fuel (natural or LP) near the unit, immediately turn off the gas supply to the generator. Contact your gas utility or the system installer for assistance in determining the source of the smell.

The AUTO/OFF/MANUAL Switch

This three-position device is referred to herein as “AUTO/OFF/MANUAL”. It is found on the control panel, as shown earlier, and is used as follows:
•“AUTO” position is the normal operating position. If a
utility power outage is sensed, the system will start the generator, let it reach stable operating speed, then connect generator power to the sub-panel. When utility power is restored, the system reconnects utility power to the sub-panel, lets the engine ‘cool down’, shuts off the generator, and waits for the next utility power outage.
•“OFF” position turns off a running generator, takes the
system out of Automatic mode and resets faults.The unit will not exercise, but the ‘Set Exercise’ setting is not lost.
•“MANUAL” position starts the engine but does not
disconnect utility power from the sub-panel. It is used for maintenance or diagnostic functions.
CAUTION!With the switch set to AUTO, the
engine may crank and start at any time without warning. Such automatic starting normally occurs when utility source voltage drops 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 AUTO/OFF/MANUAL switch to OFF and remove the 15 Amp fuse before working on or around the generator or transfer switch.
The other controls and devices installed on the control panel are described on page 10,“Know Your System Control Panel”.
Owner’s Manual
13

AUTOMATIC OPERATION

To select automatic transfer operation, do the following:
1. Set the main distribution panel circuit breaker that
sends utility voltage to the transfer switch to ON.
2. Set the AUTO/OFF/MANUAL switch to AUTO.
3. Set the generator’s main circuit breaker to its ON
position.

Checking Automatic Operation

To check the system for proper automatic operation, proceed as follows:
1. Check that AUTO/OFF/MANUAL is set to OFF.
2. Apply utility power to the Automatic Transfer Switch
by turning ON the main distribution panel circuit breaker.
3. Set the AUTO/OFF/MANUAL switch to AUTO.The
Automatic Power System is now ready for automatic operation.
4. Turn OFF the main distribution panel circuit breaker
sending power to the automatic transfer switch.
The engine will crank and start once the utility voltage drops out and the sensor has timed out.After starting, the Automatic Power Transfer System will transfer essential circuit sub-panel loads to the generator. Let the system go through its entire automatic operation sequence.
5. With the generator output supplying its loads, turn ON the main distribution panel circuit breaker that supplies utility power to the Automatic Power Transfer Switch.
6. After about 6 seconds, the automatic transfer switch will transfer loads back to the utility power.
7. About one minute after re-transfer, the engine will shut down.
This completes the test procedures for automatic operation.The backup power system will now start automatically when utility power is lost and will supply power to the essential circuit sub-panel.

Stopping the System

To disable the power transfer system for maintenance:
1. Ensure that the main distribution panel circuit breaker that sends utility voltage to the transfer switch is ON.
2. Set the AUTO/OFF/MANUAL switch to OFF.
3. Set the generator’s main circuit breaker to its OFF position.

Setting Exercise Timer

The Backup Power System is equipped with an exercise timer that will start and exercise the system once every seven days. During this exercise period, the unit runs for approximately 12 minutes and then shuts down. Electrical load transfer DOES NOT occur during the exercise cycle (unless an utility power outage occurs).
Owner’s Manual
14
A switch on the control panel is labeled “Set Exercise” (depicted on page 10).The specific day and the specific time of day this switch is pressed is programmed into the control board memory.This date and time is then used to automatically initiate the system exercise cycle.
To perform the Set Exercise procedure:
1. Choose the day and time you want your backup power system to exercise.
2. On that da
y and time, set the AUTO/OFF/MANUAL
switch to OFF.
3. Press and hold down the “Set Exercise” switch.The Diagnostic LED blinks.
4. Hold the switch down until the Diagnostic LED stops blinking. Release the Set Exercise switch.
5. Set the AUTO/OFF/MANUAL switch to AUTO.“Set Exercise” is complete.
For example, if you press the “Set Exercise” switch on Sunday morning at 10:00 AM, the unit will run an exercise cycle the following Sunday at 10:00 AM.
NOTE:“Set Exercise” will only work if the unit is in the Automatic mode and this exact procedure is followed.The exerciser does not need to be re-set if the 15 Amp fuse is removed or changed.The exerciser will need to be re-set if the 12 Volt DC battery is disconnected.
If you want to change the day and time the unit exercises, simply perform the “Set Exercise” procedure at the exact weekday and time you want it to take place.

SPECIFICATIONS

Generator

Model . . . . . . . . . . . . . . . . . . . . 1461 1535
Rated Maximum Power (LP*). . . 10.0 kW 8.0 kW Rated Maximum Load Current:
at 240 Volts. . . . . . . . . . . . . . . 41.7 Amps 33.3 Amps
at 120 Volts. . . . . . . . . . . . . . . 83.3 Amps 66.7 Amps
Rated AC Voltage . . . . . . . . . . . . 120/240 Volts
Rated Frequency . . . . . . . . . . . . 60 Hz at 3600 rpm
Phase . . . . . . . . . . . . . . . . . . . . . Single Phase
Power Factor. . . . . . . . . . . . . . . 1.0
NG Fuel Supply Pressure. . . . . 5-14 in W.C. (127-356 mm)
LP Fuel Supply Pressure. . . . . . 11-14 in W.C. (279-
356 mm)
Normal Operating Range . . . . -20°F (-28.8°C) to 104°F
(40°C)
Output Sound Level . . . . . . . . 70 dB(A) at 23 ft. (7 m) at
full load
* Natural gas rating will depend on specific fuel but typical derates
are between 10 to 20% off the LP gas rating.

Engine

Type . . . . . . . . . . . . . . . . . . . . . . Air Cooled, 4 stroke,V-Twin,
Horizontal Shaft, OHV dual
fuel engine
Bore x Stroke . . . . . . . . . . . . . . 2–72 mm x 70 mm
Displacement . . . . . . . . . . . . . . . 570 cc
Spark Plug . . . . . . . . . . . . . . . . . Champion RC12YC
Oil Type . . . . . . . . . . . . . . . . . . . Synthetic SAE 5W30,API
SJ/CF
Oil Capacity (w/filter) . . . . . . . . 48 oz. (1.6 l)
Spark Plug gap . . . . . . . . . . . . . 0.030 in (.76 mm)
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