Simplicity 040254A Manuel utilisateur

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Generator Systems

Operator’s Manual

GEN12AD, GEN15AD, GEN20AD

Thank you for purchasing this quality-built Rheem / Ruud standby generator. We are pleased that you’ve placed your

confidence in the Rheem or Ruud brand. When operated and maintained according to the instructions in this manual, your

Rheem / Ruud generator will provide many years of dependable service.

This manual contains safety information to make you aware of the hazards and risks associated with standby generators

and how to avoid them. Because Rheem does not necessarily know all the applications this equipment could be used for, it

is important that you read and understand these instructions thoroughly before attempting to start or operate this equipment.

Save these original instructions for future reference.

This standby generator requires professional installation before use. Refer to the separate Installation manual for

instructions on safe installation procedures. Your installer should follow the instructions completely.

Where to Find Us

You never have to look far to find support and service for your standby generator equipment. Consult your Yellow Pages.

There are many Rheem and Ruud authorized service dealers who provide quality service. You can also contact Rheem/Ruud

Customer Service by phone at 877-369-9400.

Generator and engine model and serial numbers should be recorded in the installation manual.

Manufacturing Company and is used under license by Briggs &

Stratton Power Products Group, LLC.

3

Table of Contents

Important Safety Instructions........................4

Installation ....................................7

For the Home Owner:..........................................7

For the Installing Dealer/Contractor: ..............................7

Owner Orientation ............................................7

Fuel Factors .................................................8

Generator Location............................................9

Delivery Inspection...........................................10

Controls ..................................... 11

Generator ..................................................11

System Control Panel.........................................12

Access Ports ...............................................13

Operation .................................... 13

Engine Oil..................................................13

Battery ....................................................13

15 Amp Fuse ...............................................14

Automatic Operation .........................................14

Checking Automatic Operation..................................14

Maintenance .................................. 15

Servicing the System .........................................15

Fault Detection System .......................................15

Generator Maintenance .......................................17

Changing Oil Filter ...........................................18

Fuel System Maintenance and Inspection .........................21

Exhaust System Maintenance and Inspection ......................21

Battery ....................................................22

Troubleshooting................................ 23

Warranty..................................... 24

Generator Specifications.......................... 25

Engine Specifications ............................ 25

4

Important Safety Instructions

SAVE THESE INSTRUCTIONS - This manual contains

important instructions that should be followed during

installation and maintenance of the generator and batteries.

Safety Symbols and Meanings

The safety alert symbol indicates a potential personal

injury hazard. A signal word (DANGER, WARNING, or

CAUTION) is used with the alert symbol to designate a

degree or level of hazard seriousness. A safety symbol

may be used to represent the type of hazard. The signal

word NOTICE is used to address practices not related to

personal injury.

DANGER indicates a hazard which, if not avoided, will

result in death or serious injury.

WARNING indicates a hazard which, if not avoided, could

result in death or serious injury.

CAUTION indicates a hazard which, if not avoided, could

result in minor or moderate injury.

NOTICE addresses practices not related to personal injury.

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 system unsafe.

Explosion

Fire

Electrical Shock

Rotating Parts

Hot Surface

Toxic Fumes

Chemical BurnExplosive PressureAuto Start

Lift Hazard

Read Manual

WARNING Running engine gives off carbon

monoxide, an odorless, colorless, poison gas.

Breathing carbon monoxide could result in death,

serious injury, headache, fatigue, dizziness,

vomiting, confusion, seizures, nausea or fainting.

• Operate this product ONLY outdoors in an area that will

not accumulate deadly exhaust gas.

• Keep exhaust gas away from any windows, doors,

ventilation intakes, soffit vents, crawl spaces, open garage

doors or other openings that can allow exhaust gas

to enter inside or be drawn into a potentially occupied

building or structure.

• Carbon monoxide detector(s) MUST be installed and

maintained indoors according to the manufacturer’s

instructions/recommendations. Smoke alarms cannot

detect carbon monoxide gas.

WARNING Storage batteries give off explosive

hydrogen gas during recharging.

Slightest spark will ignite hydrogen

and cause explosion, resulting

in death, serious injury, and/or

property damage.

Battery electrolyte fluid contains acid and is

extremely caustic.

Contact with battery contents will cause severe

chemical burns.

A battery presents a risk of electrical shock and high short

circuit current.

• DO NOT dispose of battery in a fire. Recycle battery.

• DO NOT allow any open flame, spark, heat, or lit cigarette

during and for several minutes after charging a battery.

• DO NOT open or mutilate the battery.

• Wear protective goggles, rubber apron, rubber boots and

rubber gloves.

• Remove watches, rings, or other metal objects.

• Use tools having insulated handles.

WARNING The engine exhaust from this product

contains chemicals known to the State of California to

cause cancer, birth defects, or other reproductive harm.

WARNING Certain components in this product and

related accessories contain chemicals known to the State

of California to cause cancer, birth defects, or other

reproductive harm. Wash hands after handling.

Save These Instructions

5

WARNING Generator produces hazardous voltage.

Failure to properly ground generator could result in

electrocution.

Failure to isolate generator from utility power could

result in death or serious injury to electric utility

workers due to backfeed of electrical energy.

• When using generator for backup power, notify

utility company.

• DO NOT touch bare wires or bare receptacles.

• DO NOT use generator with electrical cords which are

worn, frayed, bare or otherwise damaged.

• DO NOT handle generator or electrical cords while

standing in water, while barefoot, or while hands or feet

are wet.

• If you must work around a unit while it is operating,

stand on an insulated dry surface to reduce the risk of a

shock hazard.

• DO NOT allow unqualified persons or children to operate

or service generator.

• In case of an accident caused by electrical shock,

immediately shut down the source of electrical power and

contact the local authorities. Avoid direct contact with

the victim.

• Despite the safe design of the generator, operating this

equipment imprudently, neglecting its maintenance or

being careless can cause possible injury or death.

• Remain alert at all times while working on this equipment.

Never work on the equipment when you are physically or

mentally fatigued.

• Before performing any maintenance on the generator,

disconnect the battery cable indicated by a NEGATIVE,

NEG or (-) first. When finished, reconnect that cable last.

• After your system is installed, the generator may crank

and start without warning any time there is a power

failure. To prevent possible injury, always set the

generator’s system switch to OFF, remove the service

disconnect from the disconnect box AND remove the

15 Amp fuse BEFORE working on the equipment.

WARNING Propane and Natural Gas are extremely

flammable and explosive, which could

cause burns, fire or explosion resulting

in death, serious injury and/or property

damage.

• DO NOT operate the equipment if the “fuel shut-off” valve

is missing or inoperative.

• Install the fuel supply system according to NFPA 37 and

other applicable fuel-gas codes.

• Before placing the generator into service, the fuel system

lines must be properly purged and leak tested.

• After the generator is installed, you should inspect the fuel

system periodically.

• NO leakage is permitted.

• DO NOT operate engine if smell of fuel is present or other

explosive conditions exist.

• 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.

WARNING Starter and other rotating parts can

entangle hands, hair, clothing, or accessories

resulting in serious injury.

• NEVER operate generator without protective housings,

covers, or guards in place.

• DO NOT wear loose clothing, jewelry or anything that may

be caught in the starter or other rotating parts.

• Tie up long hair and remove jewelry.

• Before servicing, remove 15 Amp fuse from control panel

and disconnect Negative (NEG or -) battery cable.

6

NOTICE Improper treatment of generator can damage it

and shorten its life.

• Use generator only for intended uses.

• If you have questions about intended use, contact your

authorized dealer.

• Operate generator only on level surfaces.

• Adequate, unobstructed flow of cooling and ventilating air

is critical to correct generator operation.

• The Oil Fill, Oil Drain and the Control Panel doors must be

installed whenever the unit is running.

• DO NOT expose generator to excessive moisture, dust,

dirt, or corrosive vapors.

• Despite the safe design of the generator, operating this

equipment imprudently, neglecting its maintenance or

being careless can cause possible injury or death.

• Remain alert at all times while working on this equipment.

Never work on the equipment when you are physically or

mentally fatigued.

• DO NOT start engine with air cleaner or air cleaner

cover removed.

• DO NOT insert any objects through cooling slots.

• DO NOT use the generator or any of its parts as a step.

Stepping on the unit can cause stress and break parts.

This may result in dangerous operating conditions from

leaking exhaust gases, fuel leakage, oil leakage, etc.

• If connected devices overheat, turn them off and

disconnect them from generator.

Shut off generator if:

-electrical output is lost;

-equipment sparks, smokes, or emits flames;

-unit vibrates excessively:

-unit makes unusual noises.

CAUTION Installing the 15A fuse could cause the

engine to start at any time without warning

resulting in minor or moderate injury.

• Observe that the 15 Amp fuse has been removed from the

control panel for shipping.

• DO NOT install this fuse until all plumbing and wiring has

been completed and inspected.

CAUTION Excessively high operating speeds could

result in minor injury and/or equipment damage.

Excessively low speeds impose a heavy load on generator.

• DO NOT tamper with governed speed. Generator supplies

correct rated frequency and voltage when running at

governed speed.

• DO NOT modify generator in any way.

WARNING

Exhaust heat/gases could ignite

combustibles or structures resulting in

death, serious injury and/or property

damage. Contact with muffler area could

cause burns resulting in serious injury.

• DO NOT touch hot parts and AVOID hot exhaust gases.

• Allow equipment to cool before touching.

• Exhaust outlet side of weatherproof enclosure must

have at least 5 ft. (1.5 m) minimum clearance from any

structure, shurbs, trees or any kind of vegetation.

• Standby generator weatherprrof enclosure must be at

least 5 ft. (1.5 m) from windows, doors, any wall opening,

shrubs or vegetation over 12 inches (30.5 cm) in height.

• Standby generator weatherproof enclosure must have a

minimum of 5 ft. (1.5 m) overhead clearance from any

structure, overhang or trees.

• DO NOT place weatherproof enclosure under a deck or

other type of structure that may confine airflow.

• Use only flexible fuel line provided. Connect provided fuel

line to generator, DO NOT use with or substitute any other

flexible fuel line.

• Smoke detector(s) MUST be installed and maintained

indoors according to the manufacturer’s instructions/

recommendations. Carbon monoxide alarms cannot

detect smoke.

• Keep at least minimum distances shown in General

Location Guidelines to insure for proper generator cooling

and maintenance clearances.

• It is a violation of California Public Resource Code,

Section 4442, to use or operate the engine on any forest-

covered, brush-covered, or grass-covered land unless

the exhaust system is equipped with a spark arrester, as

defined in Section 4442, maintained in effective working

order. Other states or federal jurisdictions may have

similar laws.

Contact the original equipment manufacturer, retailer, or

dealer to obtain a spark arrester designed for the exhaust

system installed on this engine.

• Replacement parts must be the same and installed in the

same position as the original parts.

7

Installation

We sincerely appreciate your patronage. For this reason, we

have 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 licensed electrical and

plumbing professionals should attempt generator system

installations. Installations must strictly comply with all

applicable codes, industry standards andregulations.

Your generator is supplied with this “Operator’s Manual”

and a separate “Installation Manual”. These are important

documents and should be retained by the owner after the

installation has been completed.

For the Home Owner:

To help you make informed choices and communicate

effectively with your installation contractor(s), read and

understand Owner Orientation in this manual before

contracting or starting your generator installation.

To arrange for proper installation, contact the store at which

you purchased your generator, your dealer, a licensed

electrician or your utility power provider.

The generator warranty is VOID unless the

system is installed by licensed electrical and

plumbing professionals.

Every effort has been made to ensure that information in this

manual is accurate and current. However, we reserve the

right to change, alter, or otherwise improve the product and

this document at any time without prior notice.

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 the Installing Dealer/Contractor:

For most applications, the installation manual contains

all the information required to properly install and start

the generator. This operator’s manual describes routine

operation and owner maintenanceprocedures.

If you need more information in this matter, please call at

877-369-9400 between 8:00 AM and 5:00 PM CT.

Owner Orientation

This section provides generator 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 generator. 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.

Federal and 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, and the number of 90 degree

bends in the fuel supply increases, compensations in piping

and wiring materials must be made. 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 generator installation.

In some areas you may need to acquire electrical permits

for installing the generator, 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.

8

Fuel Factors

An important consideration affecting the entire installation

is the type of fuel used by your generator. The system was

factory tested and adjusted using either natural gas or liquid

propane (LP vapor). For proper engine function, factors

that are inherent to each of these fuels, your location and

the duration of possible utility interruptions are important

considerations in the following fuel guidelines:

 • 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),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%.

Natural gas rating will depend on specific fuel but typical

derates are between 10 to 20% off the LP gas rating.

Natural gas or LP engines are certified to operate on natural

or liquid propane gas. The emissions control system for this

engine is EM (Engine Modifications).

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.

WARNING Propane and Natural Gas are extremely

flammable and explosive, which could

cause burns, fire or explosion resulting

in death, serious injury and/or property

damage.

• DO NOT operate the equipment if the “fuel shut-off” valve

is missing or inoperative.

• After the generator is installed, you should inspect the fuel

system periodically.

• NO leakage is permitted.

• DO NOT operate engine if smell of fuel is present or other

explosive conditions exist.

• 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.

9

Generator Location

The actual physical location of your 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.

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.

 • Installgeneratoroutdoorsinanareathatwillnot

accumulate deadly exhaust gas.

 • DONOTinstallgeneratorwhereexhaustgascould

accumulate and enter inside or be drawn into a

potentially occupied building or structure.

 • BylawitisrequiredinmanystatestohaveaCarbon

Monoxide (CO) detector in operating condition in

your home. Carbon monoxide detector(s) (A) MUST

be installed and maintained indoors according to the

manufacturer’s instructions/recommendations. A CO

monitor is an electronic device that detects hazardous

levels of CO. When there is a buildup of CO, the

monitor will alert the occupants by flashing visual

indicator light and alarm. Smoke alarms cannot detect

CO gas.

 • Ensureexhaustgasiskeptawayfromanywindows,

doors, ventilation intakes, soffit vents, crawl spaces,

open garage doors or other openings that can

allow exhaust gas to enter inside or be drawn into

a potentially occupied building or structure. Your

neighbor’s home may be exposed to the engine exhaust

from your standby generator and must be considered

when installing your standby generator.

 • Windandaircurrentsshouldbetakeninto

consideration when positioning generator.

See the installation manual for full details on safe generator

location.

WARNING Running engine gives off carbon

monoxide, an odorless, colorless, poison gas.

Breathing carbon monoxide could result in death,

serious injury, headache, fatigue, dizziness,

vomiting, confusion, seizures, nausea or fainting.

• Operate this product ONLY outdoors in an area that will

not accumulate deadly exhaust gas.

• Keep exhaust gas away from any windows, doors,

ventilation intakes, soffit vents, crawl spaces, open garage

doors or other openings that can allow exhaust gas

to enter inside or be drawn into a potentially occupied

building or structure.

• Carbon monoxide detector(s) MUST be installed and

maintained indoors according to the manufacturer’s

instructions/recommendations. Smoke alarms cannot

detect carbon monoxide gas.

WARNING Exhaust heat/gases could ignite

combustibles or structures resulting in death,

serious injury and/or property damage.

• Exhaust outlet side of weatherproof enclosure must

have at least 5 ft. (1.5 m) minimum clearance from any

structure, shrubs, trees, or any kind of vegetation.

• Standby generator weatherproof enclosure must be at

least 5 ft. (1.5 m) from windows, doors, any wall opening,

shrubs or vegetation over 12 in. (30.5 cm) in height.

• Standby generator weatherproof enclosure must have a

minimum of 5 ft. (1.5 m) overhead clearance from any

structure, overhang or trees.

• DO NOT place weatherproof enclosure under a deck or

other type of structure that may confine airflow.

• USE ONLY flexible fuel line provided. Connect provided

fuel line to generator. DO NOT use with or substitute any

other flexible fuel line.

• Smoke detector(s) MUST be installed and maintained

indoors according to the manufacturer’s instructions/

recommendations. Carbon monoxide alarms cannot

detect smoke.

• DO NOT place weatherproof enclosure in manner other

than shown in illustrations.

A

10

Delivery Inspection

Carefully inspect the generator for any damage that may have

occurred during shipment.

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 and your

installer for claim procedures. Missing or damaged parts are

not warranted.

The generator is supplied with:

 • Pre-attachedmountingpad

 • Fully-servicedoil/lubricatingsystem

 • Flexiblefuelhook-uphose

 • Installationandstart-upmanual

 • Operator’smanual

 • Spareaccessdoorkeys

 • Spare15AATOtypefuse

 • Twopinconnectorplug

 • Tenpinconnectorplug

 • Liftingholeplugs

 • Touchuppaint

Not included:

 • Carbonmonoxidedetector(s)

 • Smokedetector(s)

 • Startingbattery

 • Connectingwireandconduit

 • Fuelsupplyvalves/plumbing

 • Crane,liftingstraps,chainsorcables

 • Two48”lengthsof1”pipe(notconduit)

 • Torquescrewdriver,50to50inch-poundrange

 • Voltage/Frequencymeter

11

Controls

Generator

Read this Operator’s Manual and Important Safety Instructions 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.

Generator is shown with access covers removed for clarity.

Features are similar in location for all generators.

A - Exhaust Port — High-performance muffler lowers engine

noise to comply with most codes.

B - Oil Dip Stick — Used to check the engine oil level.

C - Oil Fill Cap — Remove to service the engine with

recommended oil.

D - Air Cleaner — Protects engine by filtering dust and

debris out of intake air.

E - Oil Filter — Filters engine oil to prolong system life.

F - Oil Drain Hose — Provided to facilitate oil changing.

G - Oil Drain Door — Provides access for engine servicing.

H - Oil Fill Door — Provides access for engine servicing.

J - Engine Label — Identifies engine model and type.

K - Fuel Inlet — Fuel supply is connected here.

L - Control Panel Door — Provides access to control panel

and battery.

M - Unit ID Label (located on base) — Identifies unit by

serial number.

N - Battery — (installer-supplied) 12 Volt DC sealed battery

provides power to start the engine.

P - Control Panel — Used for various test, operation and

maintenance functions. See System Control Panel.

B

A

C

D E F

M

G

HJKLN

P

12

System Control Panel

Compare this control panel illustration with your generator to familiarize yourself with the location of these important controls:

A - SET EXERCISE — Used to set the exercise cycle start

time and day-of-the-week. Exercise cycle only occurs in

AUTO mode.

B - MANUAL OVER-RIDE — With system switch in AUTO

position, push the manual override switch to start the

generator. To turn off the generator, push and hold the

manual override switch again until engine stops.

C - System Switch — This two-position switch 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. When utility power is restored, AUTO lets

the engine stabilize internal temperatures, shuts off the

generator, and waits for the next utility power outage.

•“OFF” position turns off running generator, prevents

unit from starting and resets any detected faults.

D - 15 Amp Fuse — Protects the generator 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 ATO 15A fuse.

E - Digital Display — Displays the total number of hours

the generator has been running and fault codes. Used

to schedule maintenance tasks and for troubleshooting

operational problems with the generator. A constant

number displayed indicates the total hours of operation.

Fault conditions will flash “FC” followed by a fault code

number. All fault conditions are described in Fault

Detection System.

F - Circuit Breaker — Protects the system from shorts and

other over-current conditions. Must be ON to supply

power to the Automatic Transfer Switch.

B

A

C

D

E

F

13

Access Ports

The generator is equipped with an enclosure that has

several access doors. The doors are named for a significant

component located behind them, as follows:

A - Control Panel door

B - Fuel Inlet Port (shown for reference)

C - Oil Drain door

D - Oil Fill door

E - Exhaust Port (shown for reference)

The oil and control panel doors must be installed whenever

the unit is running to assure proper cooling, reduce noise,

and for added safety.

Each generator is suppied with a set of identical keys. These

keys fit the locks that secure the access doors.

To open access door:

1. Insert key into lock of access door handle and turn key

one quarter turn counterclockwise.

2. Grasp door’s handle and turn one quarter turn

counterclockwise to open. Remove key.

To close access door:

1. Close door and turn door’s handle one quarter

turnclockwise.

2. Insert key into lock of door handle and turn key one

quarter turn clockwise. Remove key.

Operation

Important Owner’s Considerations

Engine Oil

The engine is shipped from the factory pre-run and filled

with synthetic oil (API SJ/CF 5W-30). This allows for system

operation in a wide range of temperature and climate

conditions. Before starting the engine, check oil level and

ensure that engine is serviced as described in the operator’s

manual.

Battery

The installer must supply a valve-regulated, rechargeable

12 volt DC starting battery. See Battery in Final Installation

Considerations in the installation manual. Installer

must connect battery charge wire (wire #13) to positive

batteryterminal!

With the battery installed, all wiring to transfer switch and

generator completed, 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 charge cannot be used to recharge a battery that is

completely discharged.

WARNING Contact with muffler area could cause

burns resulting in serious injury.

• DO NOT touch hot parts and AVOID hot exhaust gases.

• Allow equipment to cool before touching.

NOTICE Any attempt to crank or start the engine before it

has been properly serviced with the recommended oil will

result in equipment failure.

• Refer to Maintenance in the Operator’s Manual for oil fill

information.

• Damage to equipment resulting from failure to follow this

instruction will void generator warranty.

B

A C D E

WARNING Battery posts, terminals and related

accessories contain lead and lead compounds, chemicals

known to the State of California to cause cancer and

reproductive harm. Wash hands after handling.

14

15 Amp Fuse

The generator’s 15 Amp fuse is critical to correct system

operation. The 15 Amp fuse was removed at the factory to

prevent the unit from starting during shipping. Your installer

will ensure the fuse is properly installed upon completion of

the installation.

Automatic Operation

To select automatic operation, do the following:

1. Confirm 15 Amp fuse is installed in control panel.

2. Set the main distribution panel circuit breaker that

sends utility voltage to the transfer switch to ON.

3. Set the generator’s circuit breaker to its ON position.

4. Set the control panel system switch to AUTO.

Checking Automatic Operation

To check the system for proper automatic operation, proceed

as follows:

1. Turn OFF the service disconnect or main distribution

panel circuit breaker sending power to the automatic

transfer switch.

When utility voltage is lost and the sensor has timed

out, the engine will crank and start. Let the system go

through its entire automatic operation sequence.

2. With the generator output supplying its loads, turn ON

the service disconnect or main distribution panel circuit

breaker that supplies utility power to the automatic

transfer switch.

3. The automatic transfer switch will transfer loads back

to utility power after a 5 minute minimum run time and

utility power is available.

4. The generator will run for an additional one minute for

engine cool down, then shut down.

If utility power is restored and generator does not shut down

after 10 minutes, set system switch to OFF and contact your

installer or local service center.

This completes the test procedures for automatic operation.

The generator will now start automatically and will supply

power to the transfer switch when utility power is lost.

Setting Exercise Timer

The generator 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

20 minutes and then shuts down. Electrical load transfer

DOES NOT occur during the exercise cycle (unless an utility

power outage occurs).

A button on the control panel is labeled “SET EXERCISE”

(see System Control Panel). The specific day and the specific

time of day this button is pressed is programmed into the

control board memory. This date and time is then used to

automatically initiate the system exercise cycle. The “SET

EXERCISE” legend on the control panel will flash until the set

exercise cycle is set.

To perform the Set Exercise procedure:

1. Choose the day and time you want your generator to

exercise.

2. On that day and time, press and hold “SET EXERCISE”

for three seconds.

The “Set Exercise” display will illuminate then turn off

to confirm that the exercise timer has been set. Then

release the button.

The unit will crank and run the exercise cycle. During

the cycle, “Set Exercise” will illuminate.

Once the exercise cycle is complete, the unit will turn

off and “Set Exercise” will no longer be displayed.

The exercise cycle may be discontinued at anytime by

turning the System Switch to OFF.

3. The unit will then start and run it’s 20 minute exercise

cycle weekly.

For example, if you press SET EXERCISE on Sunday morning

at 10:00 AM, the unit will run an immediate exercise cycle

and an exercise cycle every following Sunday at 10:00 AM

(+/- 1/2 hour).

“Set Exercise” will only work if the unit is in the AUTO mode

and this exact procedure is followed. The exerciser will need

to be re-set if the 15 Amp fuse is removed or changed, or if

the starting 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.

Generator will not exercise if timer is not set.

CAUTION With the system switch set to AUTO, the

engine could crank and start at any time without

warning, resulting in minor or moderate injury.

• To prevent possible injury that may be caused by such

sudden starts, always set the system switch to OFF if

performing maintenance on the system.

• Remove the 15 Amp fuse before working on or around

the generator or transfer switch.

15

Maintenance

Servicing the System

Before performing any generator maintenance, always

perform the following steps:

1. Set generator’s circuit breaker to its OFF position.

2. Set control panel system switch to OFF.

3. Remove 15 Amp fuse from control panel.

4. Utility voltage is present at generator control panel.

Disconnect power before servicing control panel by

removing the fuses from the transfer switch.

5. After all servicing has been completed, replace fuses in

transfer switch, replace 15 Amp fuse in control panel,

set system switch and circuit breaker ON and reset

exercise timer. See Setting Exercise Timer.

Fault Detection System

The generator may have to run for long periods of time

with no operator present. For that reason, the system is

equipped with sensors that automatically shut down the

generator in the event of potentially damaging conditions,

such as low oil pressure, high temperature, over speed, and

other conditions.

The generator’s control panel has a digital display that shows

fault codes, like “FC_1”. The table below lists the detected

fault and the fault code as it is displayed on the control

panel.

Fault Description Fault Codes

Low battery voltage FC_1

Low oil pressure FC_2

Low voltage FC_3

Engine does not start FC_4

Low frequency FC_5

Engine overspeed FC_6

High temperature FC_7

Transfer switch fault FC_8

The optional remote LED indicator can be installed at a

convenient inside location. The LED will remain lit when the

generator is in AUTO. Should a system fault be detected,

the LED will turn on and off in a series of blinks that identify

the problem. The blink pattern is repeated with a brief pause

between each series of blinks.

Reset Fault Detection System

The operator must reset the fault detection system each

time it activates. To do so, place the control panel system

switch in the OFF position for 30 seconds or more. Remedy

the fault condition, then return the generator to service by

placing the system switch in the AUTO position, installing

the 15 Amp fuse, and resetting the exercise timer. See

Setting Exercise Timer in Operation.

A description of each fault and suggested remedies are

asfollows:

No LED - Discharged Battery

If there is a detected fault condition but the optional remote

LED indicator is not blinking, this is because the battery is

completely discharged. To remedy the problem, remove the

15 Amp fuse and disconnect the battery from the generator.

Take the battery to a local battery store for analysis. Reinstall

battery after it has been fully recharged, connecting the

NEGATIVE cable last. Then reset the fault detection system,

as described earlier.

Low Battery Voltage (FC_1)

This fault is indicated by fault code FC_1 and one blink on

the optional remote LED indicator. This condition occurs

if the generator cannot start because the starting battery

output power is below that needed to crank the engine.

Causes for this problem may be a faulty battery or battery

charge circuit.

To remedy the problem, contact your local service center to

check the battery charge output. Remove the 15 Amp fuse

and disconnect the battery from the generator. Take the

battery to a local battery store for analysis.

Reinstall the battery (replace if necessary - see Battery in

Final Installation Considerations in the installation manual).

Then reset the fault detection system, as described earlier.

Low Oil Pressure (FC_2)

This fault is indicated by fault code FC_2 and two blinks on

the optional remote LED indicator. The unit is equipped with

an oil pressure switch that uses normally closed contacts

held open by engine oil pressure during operation. Should oil

pressure drop below the 8 psi range, switch contacts close

and the engine is shut down.

To remedy the low oil pressure condition, add the

recommended oil to the FULL mark on the dipstick.

If the low oil pressure condition still exists, the engine will

start, then shut down again. The fault code will appear and

the LED will flash. In this case, contact an authorized dealer.

16

Low Voltage (Generator, FC_3)

This fault is indicated by fault code FC_3 and three blinks on

the optional remote LED indicator. This condition is caused

by a restriction in the fuel flow, a broken or disconnected

signal lead, a failed alternator winding, the control panel

circuit breaker is open, or the generator is overloaded.

To remedy the problem, contact your installer or an

authorized dealer.

Engine Does Not Start (FC_4)

This fault is indicated by fault code FC_4 and four blinks on

the optional remote LED indicator. This feature prevents the

generator from damaging itself if it continually attempts to

start in spite of another problem, such as no fuel supply.

Each time the system is directed to start, the unit will

crank for 10 seconds, pause for 10 seconds, and repeat.

If the system does not begin producing electricity after

approximately 2minutes, the unit will stop cranking and the

LED will blink.

Check to make sure the generator’s circuit breaker is in the

ON position in order for the sensing leads to verify that the

unit is running.

The most likely cause of this problem is no fuel supply.

Check the internal and external fuel shut off valves to

ensure they are fully open. Other causes could be failed

spark plug(s), failed engine ignition, or the engine air filter

is clogged. You may need to contact your installer for

assistance if you can’t remedy these problems.

Low Frequency (FC_5)

This fault is indicated by fault code FC_5 and five blinks

on the optional remote LED indicator. This feature protects

devices connected to the transfer switch by shutting the

generator down if the engine runs slower than 55 Hz for

three seconds.

This condition is caused by a failed engine component or by

excessive loads on the generator. To remedy the problem,

contact your installer or an authorized dealer.

Engine Overspeed (FC_6)

This fault is indicated by fault code FC_6 and six blinks on

the optional remote LED indicator. This feature protects

devices connected to the transfer switch by shutting the

generator down if the engine happens to run faster than the

preset limit. The overspeed fault is detected as follows:

 • Ifthegeneratoroutputfrequencyis65-70Hz,after

three seconds, the generator will shut down.

 • Ifthegeneratoroutputfrequencyisgreaterthan70Hz,

the generator will shut down immediately.

This condition is caused by a failed engine component.

To remedy the problem, contact your installer or an

authorizeddealer.

High Temperature (FC_7)

This fault is indicated by fault code FC_7 and seven blinks

on the optional remote LED indicator. The contacts of

the temperature switch are normally open. If the engine

temperature exceeds approximately 149°C (300°F), the fault

is detected and the engine shuts down.

Common causes for this condition include running the

unit with access doors removed, obstructed air inlet or

exhaust port, low oil level, or debris in the engine cylinder

cooling fins.

To resolve the problem, let the engine cool down and remove

any accumulated debris and obstructions. Ensure that all

access doors are installed whenever the unit is running.

Transfer Switch Fault (FC_8)

This fault is indicated by fault code FC_8 and eight blinks

on the optional remote LED indicator (if transfer switch is

equipped with faultdetection).

The most likely cause of this fault is a blown fuse in the

transfer switch. To remedy the problem, contact your

installer or an authorized dealer.

Maintenance Schedule

Follow the hourly or calendar intervals of operation,

whichever occurs first.

First 5 Hours

Change Engine Oil

Every 8 Hours or Daily

Clean Debris

Check Engine Oil Level

Every 100 Hours or Annually

Change Air Filter

Change Engine Oil and Filter

Replace Spark Plugs

Check Valve Clearance

Annually

Clean Air Cooling System

Check Fuel System

Check Exhaust System

Test System Operation (Simulate a Power Outage)

17

Regular maintenance will improve the performance and

extend life of the generator. See any authorized dealer for

service.

NOTICE Once a year you should replace the spark plugs and

air filter. A new spark plug and clean air filter assure proper

fuel-air mixture and help your engine run better and last

longer.

Emissions Control

Maintenance, replacement, or repair of the emissions

control devices and systems may be performed by any non-

road engine repair establishment or individual.

However, to obtain “no charge” emissions control service, the

work must be performed by a factory authorized dealer. See

the Emission Warranty.

Generator Maintenance

The generator warranty does not cover items that have been

subjected to operator abuse or negligence. To receive full

value from the warranty, the operator must maintain the

generator as instructed in this manual.

Some adjustments will need to be made periodically to

properly maintain your generator.

All service and adjustments should be made at least once

each season. Follow the requirements in the Maintenance

Schedule chart.

Engine Maintenance

When all engine servicing is complete, replace 15 Amo fuse

in control panel and reset the exercise timer. See Setting

Exercise Time in Operation.

Engine Oil

This engine is filled with synthetic oil (API SJ/CF 5W-30).

This allows from system operation in the widest range of

temperature and climate conditions.

We recommend the use of Briggs & Stratton Warranty

Certified oils for best performance. Other high-quality

detergent oils are acceptable if classified for service SF, SG,

SH, SJ or higher. DO NOT use special additives.

Outdoor temperatures determine the proper oil viscosity for

the engine. Use the chart to select the best viscosity for the

outdoor temperature range expected.

NOTICE Synthetic oil meeting ILSAC GF-2, API

certification mark of API service symbol with “SJ/CF

ENERGY CONSERVING” or higher, is an acceptable

oil at all temperatures. Use of synthetic oil does not

alter required oil change intervals.

Checking/Adding Engine Oil

1. Gain access to the dipstick on the engine.

2. Clean the oil fill area of any debris.

3. Remove the dipstick and wipe with a clean cloth.

4. Fully insert dipstick into oil fill.

5. Remove dipstick and check oil level. Verify oil is a FULL

mark (top hole) on dipstick.

WARNING Unintentional sparking could cause fire or electric

shock resulting in death or serious injury.

WHEN ADJUSTING OF MAKING REPAIRS TO YOUR

GENERATOR

• Disconnect the spark plug wire from the spark plug and place the

wire where it cannot contact spark plug.

WHEN TESTING FOR ENGINE SPARK

• Use approved spark plug tester.

• DO NOT check for spark with spark plug removed.

* Below 40°F (4°C) the use of SAE 30 will result in hard

starting.

** Above 80°F(27°C) the use of 10W30 may cause increased

oil consumption. Check oil level more frequently.

18

6. If needed, slowly pour recommended oil into oil fill

opening. DO NOT overfill. After adding oil, wait one

minute and recheck oil level.

NOTICE Overfilling with oil could cause the engine not to start, or

hard starting.

 • DONOToverfill.

 • IfovertheFULLmarkondipstick,drainoiltoreduceoil

level to FULL mark on dipstick.

7. Replace and tighten oil dipstick.

CAUTION Avoid prolonged or repeated skin contact

with used motor oil.

• Used motor oil has been shown to cause skin cancer in

certain laboratory animals.

• Thoroughly wash exposed areas with soap and water.

NOTICE Any attempt to crank or start the engine before it

has been properly serviced with the recommended oil will

result in equipment failure.

• Refer to Maintenance in the Operator’s Manual.

• Damage to equipment resulting from failure to follow this

instruction will void engine and generator warranty.

Changing Engine Oil

KEEP OUT OF REACH OF CHILDREN. DON’T

POLLUTE. CONSERVCE RESOURCES. RETURN

USED OIL TO COLLECTION CENTERS.

Change oil while the engine is still warm from running, as

described in the operator’s manual.

1. Set control board system switch to OFF.

2. Remove 15 Amp fuse from control panel.

3. Place oil drain hose into an approved container.

4. Remove brass fitting from end of drain hose and drain

oil into an approved container.

5. When oil has drained, replace brass fitting on hose.

6. Add oil if not changing oil filter, See Checking/Adding

Engine Oil.

A

B

A

B

Shown here is the oil drain hose (B) and the oil filter location

(A) for the 12 kW generator:

Shown here is the oil drain hose (B) and the oil filter location

(A) for the 15 kW & 20kW generators:

Changing Oil Filter

1. Place an approved container under oil filter.

2. Remove oil filter and dispose of properly.

3. Before installing a new oil filter, lightly lubricate the oil

filter gasket with fresh, clean oil.

4. Install the oil filter by hand until the gasket contacts the

oil filter adapter, then tighten the oil filter ½ to ¾ turn.

5. Add oil as described in Checking/Adding Engine Oil.

6. Remove container from under oil filter and clean up any

spilled oil.

7. Start and run engine. As engine warms up, check for oil

leaks.

8. Stop engine, wait for oil to settle, check oil level and add

if necessary as described in Checking/Adding Engine Oil.

NOTICE Any attempt to crank or start the engine before it has

been properly serviced with the recommended oil will result in

equipment failure.

DO NOT attempt to crank or start the engine before it has

been properly serviced with the recommended oil. This may

result in engine failure.

Damage to equipment resulting from failure to follow this

instruction will void engine and generator warranty.

19

Your engine will not run properly and may be damaged if you

run it with a dirty air cleaner. Clean or replace more often if

operating under dusty or dirty conditions.

NOTICE Do not use pressurized air or solvents to clean the

filter. Pressurized air can damage the filter and solvents will

dissolve the filter.

To service the air cleaner, follow these steps:

1A. For the 12kW generator, unhook latches (A) on both

sides of cover (B) and remove cover.

1B. For the 15 and 20kW generator, remove knob (A) on the

cover (B) and remove the cover. (Note the location of the

air inlet tube (G) and where it is positioned at the engine

bulkhead).

2. Remove knob (C) and plate (D). Carefully remove

air cleaner assembly to prevent debris from entering

carburetor.

3. Slide foam pre-cleaner (F) off cartridge (E) and wash

pre-cleaner in liquid detergent and water.

4. Squeeze the pre-cleaner dry with a clean cloth. DO NOT

TWIST.

5. Tap cartridge gently on a solid surface to loosen and

remove trapped particles.

6. Reassemble clean (or new) air cleaner assembly inside

cover. Dispose of old filter properly.

7. Install clean (or new) air cleaner assembly inside cover.

Dispose of old filter properly.

8. Reinstall plate and knob.

9A. For the 12kW generator, replace cover and reattach

latches to cover.

9B. For the 15 and 20kW generator, install cover with the

air inlet tube (G) pointing toward the engine bulkhead.

Install knob in cover and hand tighten the knob.

Service Air Cleaner

C

A

B

F

E

D

C

Shown here is the air cleaner assembly for the 12 kW generator:

Shown here is the air cleaner assembly for the 15 and 20 kW

generator:

B

A

F

E

D

G

20

Regular valve clearance check and adjustment will improve

performance and extend engine life. The procedure cannot

be done without partial engine disassembly and the use of

special tools. For this reason we recommend that you have

an authorized Service Dealer check and adjust valve clearance

at recommended intervals (see Maintenance Schedule in the

Maintenance section).

Check Valve Clearance

Service Spark Plugs

Changing the spark plugs will help your engine to start easier

and run better.

1. Clean area around spark plugs.

2. Remove and inspect spark plugs.

3. Check electrode gap with wire feeler gauge and reset

spark plug gap to recommended gap if necessary (see

Specifications).

4. Replace spark plugs if electrodes are pitted, burned or

porcelain is cracked, Use the recommended replacement

spark plugs. (See Specifications).

5. Install spark plugs and tighten to 180 in.-lbs. (20 Nm).

Clean Air Cooling System

Generator maintenance consists of keeping the unit clean.

Operate the unit in an environment where it will not be

exposed to excesive dust, dirt, moisture or any corrosive

vapors. Cooling air louvers on the enclosure must not become

clogged with snow, leaves, or any other foreign material. To

prevent generator damage caused by overheating, keep the

enclosure cooling inlets and outlets clean and unobstructed at

all times.

Check the cleanliness of the unit frequently and clean when

dust, dirt, oil, moisture or other foreign substances are visible

on its exterior/interior surface. Inspect the air inlet and outlet

openings inside and outside the enclosure to ensure air flow

is not blocked.

Over time debris may accumulate in cylinder cooling fins

and cannot be observed without partial engine disassembly.

Unobstructed air flow is critical for correct generator

operation. For this reason, we recommend you have an

authorized Service Dealer clean the cooling system per

recommended intervals (see Maintenance Schedule in the

Maintenance Section). Equally important is to keep top of

engine free from debris. Make sure the oil cooler fins are free

of dirt and debris.

NOTICE Improper treatment of generator could damage it

and shorten its life.

 • DONOTusedirectsprayfromagardenhosetoclean

generator. Water can enter the engine and generator and

cause problems.

 • DONOTexposegeneratortoexcessivemoisture,dust,

dirt, or corrosive vapors.

 • DONOTinsertanyobjectsthroughcoolingslots.

Clean the generator as follows:

1. Use a damp cloth to wipe exterior surfaces clean.

2. Use a soft, bristle brush to loosen caked on dirt, etc.

3. Use a vacuum cleaner to pick up loose dirt and debris.

4. Use low pressure air (not to exceed 25 psi) to blow

away dirt. Inspect cooling air slots and openings in

the generator. These openings must be kept clean and

unobstructed.

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