Generac Power Systems PWRgenerator 9 kW User manual

Owner’s Manual
PWRgenerator™ Air-Cooled Generators
9 kW
SAVE THIS MANUAL FOR FUTURE REFERENCE
®
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.

ii Owner’s Manual for PWRgenerator Air-Cooled Generators
Use this page to record important information about this generator.
Record the information found on the unit data label on this
page. See General Information for the location of the unit
data label. The unit has a label plate affixed to the inside par-
tition, to the left of the control panel console as shown in Fig-
ure 2-1. See Operation for directions on how to open the top
lid and remove the front panel.
Always supply the complete model and serial numbers of the
unit when contacting an Independent Authorized Service
Dealer (IASD) about parts and service.
Operation and Maintenance: Correct maintenance and
care of the unit ensures a minimum number of problems, and
keeps operating expenses at a minimum. It is the operator’s
responsibility to perform all safety inspections, to verify all
maintenance for safe operation is performed promptly, and
to have the equipment inspected periodically by an IASD.
Normal maintenance, service, and replacement of parts are
the responsibility of the owner/operator and are not
considered defects in materials or workmanship within the
terms of the warranty. Individual operating habits and usage
may contribute to the need for additional maintenance or
service.
When the generator requires servicing or repairs, Generac
recommends contacting an IASD for assistance. Authorized
service technicians are factory-trained and are capable of
handling all service needs. To locate the nearest IASD,
please visit the dealer locator at:
www.generac.com/Dealer-Locator.
Model:
Serial:
Production Date:
Volts: 400VDC
Amps: 22.5A
DC Output:
Engine Speed: 2,300 rpm
Controller P/N:
STA MAC ID:
SSID:
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Owner’s Manual for PWRgenerator Air-Cooled Generators iii
Table of Contents
Section 1: Safety Information
Introduction ..................................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .................................................................1
How to Obtain Service .................................................1
General Hazards ...........................................................2
Exhaust Hazards ..........................................................3
Electrical Hazards ........................................................3
Fire Hazards .................................................................3
Explosion Hazards .......................................................4
Battery Hazards ............................................................4
Section 2: General Information
Generator Component Locations ...............................7
Data Decals ...................................................................8
Specifications ...............................................................9
Generator ....................................................................9
Engine .........................................................................9
Protection Systems ...................................................10
Emissions ...................................................................10
Fuel Requirements .....................................................10
Battery Requirements ................................................10
Battery Charger ..........................................................10
Engine Oil Requirements ..........................................10
Activating the Generator ...........................................11
Replacement Parts .....................................................11
Accessories ................................................................11
Section 3: Operation
Site Prep Verification .................................................13
Generator Enclosure .................................................13
Opening the Lid .........................................................13
Front Access Panel Removal ....................................13
Intake Side Panel Removal .......................................14
Main Line Circuit Breaker
(Generator Disconnect) .............................................14
LED Indicator Lights ..................................................14
Auxiliary Shutdown Switch .......................................15
Control Panel Interface ..............................................15
Using the AUTO/OFF/MANUAL Interface .................15
Operating Modes ........................................................16
Interface Menu Displays ............................................16
LCD Panel .................................................................16
Menu System Navigation ..........................................17
Setting the Exercise Timer ........................................19
Battery Charger ..........................................................19
Automatic Sequence of Operation ...........................19
Cranking ....................................................................19
Cleaning Cycle ..........................................................19
Shutting Generator Down While Under Load
or During a Utility Outage .........................................19
PWRcell System .........................................................21
Communication .........................................................21
Inverter Control Module .............................................21
Auto Start/Stop State of Charge (SoC) Setpoints .....21
PWRgenerator Start/Stop Commands ......................21
Adjusting PWRgenerator Setpoints ...........................22
Section 4: Maintenance
Maintenance ...............................................................23
Preparing for Maintenance ........................................23
Performing Scheduled Maintenance ........................23
Service Schedule .......................................................24
Maintenance Log .......................................................24
Checking Engine Oil Level ........................................25
Engine Oil Requirements ..........................................25
Changing the Oil and Oil Filter .................................25
Servicing the Air Cleaner ..........................................26
Spark Plug(s) ..............................................................26
Battery Maintenance ..................................................26
Inspecting the Battery ................................................27
Cleaning the Sediment Trap .....................................27
Post Maintenance Checks .........................................28
Performing Fuel System Leak Test ...........................28
Attention After Submersion ......................................29
Corrosion Protection .................................................29
Remove From and Return To Service Procedure ...29
Remove From Service ...............................................29
Return to Service .......................................................29
Section 5: Troubleshooting / Quick
Reference Guide
Generator Troubleshooting ......................................31
Quick Reference Guide .............................................33

Table of Contents
iv Owner’s Manual for PWRgenerator Air-Cooled Generators
This page intentionally left blank.

Safety Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 1
Section 1: Safety Information
Introduction
Thank you for purchasing this compact, high perfor-
mance, air-cooled, engine-driven generator. It is
designed to automatically supply direct current (DC) elec-
trical power to the Generac PWRcell Clean Energy Sys-
tem for the purpose of charging storage batteries during
utility outages or periods of low solar output.
This unit is factory installed in an all-weather, metal
enclosure intended exclusively for outdoor installation.
This generator will operate using either vapor withdrawn
liquid propane (LP) or natural gas (NG).
NOTE: This unit is specifically designed as a backup
power source and to communicate with the PWRcell
inverter. Generator will charge PWRcell batteries when
solar cells through PVlink™ and utility power are not suf-
ficient to maintain minimum battery state of charge.
NOTE: California Residents: This unit may only be uti-
lized as an emergency backup power source, used only
when grid power is unavailable.
The information in this manual is accurate based on
products produced at the time of publication. The manu-
facturer reserves the right to make technical updates,
corrections, and product revisions at any time without
notice.
Read This Manual Thoroughly
If any section of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) or Generac Customer Service at 1-888-436-3722
(1-888-GENERAC), or visit www.generac.com for start-
ing, operating, and servicing procedures. The owner is
responsible for correct maintenance and safe use of the
unit.
This manual must be used in conjunction with all other
supporting product documentation supplied with the
product.
SAVE THESE INSTRUCTIONS for future reference. This
manual contains important instructions that must be fol-
lowed during placement, operation, and maintenance of
the unit and its components. Always supply this manual
to any individual that will use this unit, and instruct them
on how to correctly start, operate, and stop the unit in
case of emergency.
Safety Rules
The manufacturer cannot anticipate every possible cir-
cumstance that might involve a hazard. The alerts in this
manual, and on tags and decals affixed to the unit, are
not all inclusive. If using a procedure, work method, or
operating technique that the manufacturer does not spe-
cifically recommend, verify that it is safe for others and
does not render the equipment unsafe.
Throughout this publication, and on tags and decals
affixed to the unit, DANGER, WARNING, CAUTION, and
NOTE blocks are used to alert personnel to special
instructions about a particular operation that may be haz-
ardous if performed incorrectly or carelessly. Observe
them carefully. Alert definitions are as follows:
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that
they indicate. Common sense and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
How to Obtain Service
When the unit requires servicing or repairs, contact Gen-
erac Customer Service at 1-888-GENERAC (1-888-436-
3722) or visit www.generac.com for assistance.
When contacting Generac Customer Service about parts
and service, always supply the complete model and
serial number of the unit as given on its data decal
located on the unit. Record the model and serial numbers
in the spaces provided on the front cover of this manual.
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

Safety Information
2 Owner’s Manual for PWRgenerator Air-Cooled Generators
General Hazards
(000190)
DANGER
Loss of life. Property damage. Installation must
always comply with applicable codes, standards, laws
and regulations. Failure to do so will result in death
or serious injury.
(000750)
DANGER
Automatic start-up. Disconnect power and render
unit inoperable before working on unit. Failure to do
so will result in death or serious injury.
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
(000247a)
Equipment damage. This unit is not intended for use as a prime
power source. It is intended for use as an intermediate power
supply in the event of temporary power outage only. Doing so
could result in death, serious injury, and equipment damage.
WARNING
(000130)
Accidental Start-up. Disconnect the negative battery
cable, then the positive battery cable when working
on unit. Failure to do so could result in death
or serious injury.
WARNING
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000187)
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
(000155a)
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000115)
Moving Parts. Do not wear jewelry when
starting or operating this product. Wearing
jewelry while starting or operating this product
could result in death or serious injury.
WARNING
(000111)
WARNING
Moving Parts. Keep clothing, hair, and
appendages away from moving parts. Failure
to do so could result in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to
operate or service this equipment and could result in
death or serious injury. (000215a)
WARNING
WARNING
(000228)
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death, or serious injury.
(000216)
WARNING
Injury and equipment damage. Do not use generator
as a step. Doing so could result in falling, damaged
parts, unsafe equipment operation, and could result
in death or serious injury.

Safety Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 3
Exhaust Hazards
Electrical Hazards
Fire Hazards
(000103)
Asphyxiation. Running engines produce carbon
monoxide, a colorless, odorless, poisonous
gas. Carbon monoxide, if not avoided, will
result in death or serious injury.
DANGER
(000178a)
WARNING
Asphyxiation. Always use a battery operated carbon
monoxide alarm indoors and installed according to
the manufacturer’s instructions. Failure to do so
could result in death or serious injury.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
WARNING
(000281)
Fire risk. Fuel and vapors are extremely
flammable. Do not operate indoors. Doing
so could result in death, serious injury, or
property or equipment damage.
(000144)
DANGER
Electrocution. Contact with bare wires,
terminals, and connections while generator
is running will result in death or serious injury.
(000150)
Electrocution. Never connect this unit to the electrical
system of any building unless a licensed electrician
has installed an approved transfer switch. Failure to
do so will result in death or serious injury.
DANGER
(000237)
DANGER
Electrical backfeed. Use only approved switchgear to
isolate generator from the normal power source.
Failure to do so will result in death, serious injury,
and equipment damage.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
WARNING
(000217)
Fire hazard. Do not obstruct cooling and ventilating
airflow around the generator. Inadequate ventilation
could result in fire hazard, possible equipment
damage, death or serious injury.
WARNING
(000218)
Fire and explosion. Installation must comply with all
local, state, and national electrical building codes.
Noncompliance could result in unsafe operation,
equipment damage, death, or serious injury.
WARNING
(000219)
Fire hazard. Use only fully-charged fire extinguishers
rated “ABC” by the NFPA. Discharged or improperly
rated fire extinguishers will not extinguish electrical
fires in automatic standby generators.

Safety Information
4 Owner’s Manual for PWRgenerator Air-Cooled Generators
Comply with regulations the local agency for workplace
health and safety has established. Also, verify that the
generator is installed in accordance with the manufac-
turer’s instructions and recommendations. Following
proper installation, do nothing that might alter a safe
installation and render the unit in noncompliance with the
aforementioned codes, standards, laws, and regulations.
Explosion Hazards
Battery Hazards
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
WARNING
Electrocution. Refer to local codes and standards for
safety equipment required when working with a live
electrical system. Failure to use required safety
equipment could result in death or serious injury.
(000257)
(000147)
WARNING
Risk of Fire. Unit must be positioned in a
manner that prevents combustible material
accumulation underneath. Failure to do so
could result in death or serious injury.
(000192)
DANGER
Explosion and fire. Fuel and vapors are extremely
flammable and explosive. No leakage of fuel is
permitted. Keep fire and spark away. Failure to do
so will result in death or serious injury.
(000151a)
DANGER
Explosion and fire. Connection of fuel source must be
completed by a qualified professional technician or contractor.
Incorrect installation of this unit will result in death, serious
injury, and property and equipment damage.
(000174)
DANGER
Risk of fire. Allow fuel spills to completely dry
before starting engine. Failure to do so will
result in death or serious injury.
(000110)
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000162)
Explosion. Do not dispose of batteries in a fire.
Batteries are explosive. Electrolyte solution can cause
burns and blindness. If electrolyte contacts skin or eyes,
flush with water and seek immediate medical attention.
WARNING
(000137a)
WARNING
Explosion. Batteries emit explosive gases while
charging. Keep fire and spark away. Wear protective
gear when working with batteries. Failure to do so
could result in death or serious injury.
(000164)
WARNING
Electrical shock. Disconnect battery ground
terminal before working on battery or battery
wires. Failure to do so could result in death
or serious injury.
(000138a)
WARNING
Risk of burns. Batteries contain sulfuric acid and can
cause severe chemical burns. Wear protective gear
when working with batteries. Failure to do so could
result in death or serious injury.
(000163a)
Risk of burn. Do not open or mutilate batteries.
Batteries contain electrolyte solution which can cause
burns and blindness. If electrolyte contacts skin or
eyes, flush with water and seek immediate medical
attention.
WARNING

Safety Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 5
Always recycle batteries in accordance with local laws
and regulations. Contact your local solid waste collection
site or recycling facility to obtain information on local
recycling processes. For more information on battery
recycling, visit the Battery Council International website
at: http://batterycouncil.org.
WARNING
(000228)
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death, or serious injury.

Safety Information
6 Owner’s Manual for PWRgenerator Air-Cooled Generators
This page intentionally left blank.

General Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 7
Section 2: General Information
Generator Component Locations
Figure 2-1. 9 kW—Components and Control Locations
A. Lock with cover E. Battery compartment
(battery not supplied)
J. Oil fill cap/dipstick N. Fuel inlet
B. Main line circuit breaker
(generator disconnect)
F. Exhaust enclosure K. Oil filter O. Data decal location
C. Airbox with air cleaner G. Status LED indicators L. Composite base P. Auxiliary shutdown switch
D. Control panel H. Oil drain hose M. Sediment trap Q. ECM
012454
C
B
G
F
E
D
AA
L
K
J
H
N
M
Q
O
P

General Information
8 Owner’s Manual for PWRgenerator Air-Cooled Generators
Data Decals
Two decals on the generator provide information about the unit itself and required fuel inlet pressure for correct opera-
tion.
Model Data Decal
Includes important information about the unit
including:
•Model number
•Serial number
•Production date
•Voltage
•Amps
•Country of origin
•Rated ambient temperature
The model data decal also displays certifica-
tion symbols by Intertek (cETLus) and the
Southwest Research Institute (SwRI).
Fuel Inlet Pressure
Displays unit serial number, along with mini-
mum and maximum inlet pressures for natural
gas (NG) and liquid propane (LP) supply.
Space is provided for installer to enter maxi-
mum flow rates based on installed pipe sizes
and lengths.

General Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 9
Specifications
Generator
Engine
A detailed specification sheet for a particular generator is available from a local IASD.
Model 9 kW
Rated voltage 400 VDC
Rated maximum load
current (amps) at rated
voltage with LP*
22.5
Main line circuit breaker
(generator disconnect) 30 amp
Battery requirement
(field supplied)
12 volts, Group 26R-540CCA Minimum
(see Replacement Parts)
Enclosure Aluminum
Weight (lb / kg)
(without battery) 416 / 189
Normal operating range
This unit is tested in accordance to UL 2200 standards with anoperating temperature of
-20 °F (-29 °C) to 122 °F (50 °C). For areas where temperatures fall below 32 °F (0 °C),a
cold weather kit is recommended. When operated above 77 °F (25 °C), there may be a
decrease in engine power. See Engine.
These generators are rated in accordance with UL 2200, Safety Standard for Stationary Engine Generator Assem-
blies, and CSA-C22.2 No. 100-04 Standard for Motors and Generators.
* NG ratings will depend on specific fuel joules/BTU content.
Model 9 kW
Engine type G-Force 800 Series
Number of cylinders 2
Displacement 816 cc
Cylinder block Aluminum with cast iron sleeve
Recommended spark plug See Replacement Parts
Spark plug gap 0.020 in (0.508 mm)
Hydraulic Lifters Yes
Valve clearance N/A
Starter 12 VDC
Oil capacity including filter Approx. 2.2 qt (2.1 L)
Recommended oil filter See Replacement Parts
Recommended air filter See Replacement Parts
Engine power is subject to and limited by such factors as fuel BTU/joules, ambient temperature, and altitude. Engine
power decreases approximately 3.5% for each 1,000 ft (304.8 m) above sea level, and also will decrease
approximately 1% for each 10 °F (6 °C) above 60 °F (15 °C) ambient temperature.

General Information
10 Owner’s Manual for PWRgenerator Air-Cooled Generators
Protection Systems
The generator may need to run for long periods of time
with no operator present to monitor engine or generator
conditions. The generator is equipped with protection
systems to automatically shut down the unit to protect
against potentially damaging conditions. Some of these
systems include:
Alarms:
Warnings:
The control panel contains a display alerting the operator
when a fault condition occurs. The above list is not all-
inclusive. See Operation for more information about
alarms and control panel operation.
NOTE: A warning indicates a condition on the generator
which should be addressed, but will not shut down gener-
ator. An alarm shuts down the generator to protect sys-
tem from any damage. In event of an alarm, an owner
can clear the alarm and restart generator prior to contact-
ing an IASD. Contact an IASD if the intermittent issue
occurs again.
Emissions
The United States Environmental Protection Agency (US
EPA) (and California Air Resources Board (CARB), for
engines/equipment certified to California standards)
requires this engine/equipment to comply with exhaust
and evaporative emissions standards. Locate the emis-
sions compliance decal on the engine to determine appli-
cable standards. See the included emissions warranty for
emissions warranty information. Follow the maintenance
specifications in this manual to ensure the engine com-
plies with applicable emissions standards for the duration
of the product’s life.
This generator is certified to operate on liquid propane
vapor fuel or pipeline natural gas.
The Emission Control System code is EM (Engine Modifi-
cation). The Emission Control System on this generator
consists of the following:
:
Fuel Requirements
The engine has been fitted with a dual fuel electronic fuel
injection control (EFIC) system. The unit will run on NG
or LP gas, but has been factory-configured to run on NG.
The fuel system will be configured for the available fuel
source during installation.
Recommended fuels should have a BTU content of at
least 1,000 BTUs per ft3(37.26 megajoules per m3) for
natural gas, or at least 2,500 BTUs per ft3(93.15 mega-
joules per m3) for LP gas.
NOTE: If converting to LP gas from NG, a minimum LP
tank size of 250 gal (946 L) is recommended. See instal-
lation manual for complete procedures and details.
Battery Requirements
12 volts, Group 26R Wet Cell 540CCA minimum (not
included with unit). See Battery Maintenance for correct
battery maintenance procedures.
Battery Charger
The battery charger is integrated into the converter mod-
ule in all models. It operates as a smart charger, verifying
output charging levels are safe and continuously opti-
mized to promote maximum battery life.
NOTE: Do not use external battery chargers.
Engine Oil Requirements
See Engine Oil Requirements for correct oil viscosity.
•High Temperature
•Low Oil Pressure
•Overcrank
•Overspeed
•Overvoltage
•Undervoltage
•Overload
•Underspeed
•RPM Sensor Loss
•Controller Fault
•Wiring Error
•Stepper Overcurrent
•Charger Warning
•Low Battery
•Battery Problem
•Exercise Set Error
•USB Warning
•Download Failure
System Components
Air Induction - Intake manifold
- Air cleaner
Fuel Metering - Electronically controlled mixer
assembly
Ignition - Spark plug
- Ignition module
Exhaust - Exhaust manifold
- Muffler
(000105)
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Add fuel in a well
ventilated area. Keep fire and spark away. Failure
to do so will result in death or serious injury.
DANGER

General Information
Owner’s Manual for PWRgenerator Air-Cooled Generators 11
Activating the Generator
The generator should be activated upon initial startup.
See installation manual for complete instructions.
Replacement Parts
Accessories
NOTE: Performance enhancing accessories are available for air-cooled generators. Contact an IASD or visit
www.generac.com for additional information on replacement parts, accessories, and extended warranties. See also
http://www.ordertree.com/generac/air-cooled-homestandby-generators/.
Description 9 kW
26R Exide battery 0H3421S
Spark plug 0G0767B (RC12YC or equivalent)
Oil filter 070185E
Air filter 0J8478
Control panel fuse 0D7178T
Converter module fuse 0E7403C
ECM fuse
Accessory Description
Cold Weather Accessories*—
•Battery Pad Warmer
•Oil Warmer
•Breather Warmer
* each sold separately
•Recommended in areas where temperatures fall below 0 °F (-18 °C).
•Recommended in areas where temperatures fall below 0 °F (-18 °C).
•Recommended in areas where heavy icing occurs.
Scheduled Maintenance Kit Includes all items necessary to perform complete routine maintenance on the
generator along with oil recommendations (oil not included).
Fascia Base Wrap The fascia base wrap snaps together around the bottom of the new air-cooled
generators. This offers a sleek, contoured appearance as well as protection from
rodents and insects by covering the lifting holes located in the base. Requires use of
the mounting pad shipped with the generator.
Touch-Up Paint Kit If the generator enclosure is scratched or damaged, it is important to touch-up the
paint to protect from future corrosion. The paint kit includes the necessary paint to
correctly maintain or touch-up a generator enclosure.
Extended Warranty Coverage Extend generator warranty coverage by purchasing extended warranty coverage.
Covers both parts and labor. Extended coverage can be purchased within 12 months
of the end-user’s purchase date. This extended coverage is applicable to registered
units and end-user proof of purchase must be available upon request.
Available for Generac®and Guardian®products.
Not available for Corepower™, PowerPact™, and EcoGen™ products or all
international purchases.

General Information
12 Owner’s Manual for PWRgenerator Air-Cooled Generators
This page intentionally left blank.

Operation
Owner’s Manual for PWRgenerator Air-Cooled Generators 13
Section 3: Operation
Site Prep Verification
Generator must be installed to allow unimpeded airflow
into and out of generator.
Mechanical and gravity outdoor air intake openings for air
distribution and supply systems must be located not less
than 10 ft (3.05 m) horizontally from generator enclosure.
See Section 401.4 in the ICC Mechanical Code for addi-
tional information.
Verify all shrubs or tall grasses within 3 ft (0.91 m) of
intake and discharge louvers on the sides of the enclo-
sure have been removed. Install generator on high
ground where water levels will not rise and endanger it.
This unit must not operate in or be subjected to standing
water. Verify all potential water sources such as water
sprinklers, roof run-off, rain gutter downspouts, and sump
pump discharges are directed away from unit.
Generator Enclosure
Enclosure lid is locked prior to shipment. A set of keys is
attached to cardboard on top of generator. An additional
set of keys is attached to pallet bracket on the front intake
end of generator.
NOTE: Keys provided with this unit are intended for ser-
vice personnel use only.
Opening the Lid
1. Use keys to open generator lid.
2. See Figure 3-1. Two locks (A) secure lid; one on
each side. Open protective rubber cap to access
keyhole.
Figure 3-1. Opening the Lid
3. Press down on lid above side lock, and unlock
latch to correctly open lid.
4. Repeat for other side. Lid may appear stuck if pres-
sure is not applied from the top.
NOTE: Always verify side locks are unlocked before
attempting to lift lid.
Front Access Panel Removal
See Figure 3-2. Remove front access panel (A) by lifting
straight up and out once lid is open.
Figure 3-2. Remove Front Access Panel
(000750)
DANGER
Automatic start-up. Disconnect power and render
unit inoperable before working on unit. Failure to do
so will result in death or serious injury.
009209
A
A
009210
A
B
C
D

Operation
14 Owner’s Manual for PWRgenerator Air-Cooled Generators
NOTE: Always lift front access panel straight up before
pulling away from enclosure (B and C). Do not pull panel
away from the enclosure before lifting up (D).
Intake Side Panel Removal
See Figure 3-3. Intake side panel (A) must be removed
to access battery compartment, fuel regulator, and sedi-
ment trap.
1. Raise lid and remove front panel.
2. Use a hex key to remove two mounting screws (B)
and L-bracket screw (C).
3. Lift intake panel up and away from generator.
NOTE: Always lift intake side panel straight up before
pulling away from enclosure. Do not pull panel away from
enclosure before lifting up (D).
Figure 3-3. Intake Side Panel Removal
Main Line Circuit Breaker
(Generator Disconnect)
See Figure 3-4. This is a 2-pole main line circuit breaker
(MLCB) (generator disconnect) (A) rated according to rel-
evant specifications.
The MLCB (generator disconnect) can be locked in OFF
(OPEN) for security. Use an appropriately-sized padlock
(not included) with a shackle long enough to pass
through both lock tabs (B).
Figure 3-4. Main Line Circuit Breaker (MLCB)
NOTE: DO NOT leave generator MLCB (generator dis-
connect) locked in OFF (OPEN) during normal generator
operation. Leaving MLCB (generator disconnect) in OFF
(OPEN) will prevent generator from powering structure
during a power outage when placed in AUTO mode.
LED Indicator Lights
See Figure 3-5. Three LEDs are visible behind a translu-
cent lens on the generator side panel. These LEDs indi-
cate generator operating status.
Figure 3-5. LED Indicator Lights
•Green LED “Ready” light (A) illuminates when util-
ity is present and control panel is in AUTO. LED
flashes when engine starts and generator outputs
power to PWRcell Inverter/Batteries.
•Red LED “Alarm” light (B) illuminates when gener-
ator is OFF or a fault is detected. Contact an IASD.
•Yellow LED “Non-Critical Alert” light (C) illuminates
when maintenance is required.
NOTE: Yellow LED may be illuminated at the same time
as either the red or green LED.
013455
D
B
A
C
001810
001810
BA
B
001791
001791
A
C
B

Operation
Owner’s Manual for PWRgenerator Air-Cooled Generators 15
Auxiliary Shutdown Switch
All generators are equipped with an external means of
shutting down the generator which complies with the lat-
est NEC code requirement. Primary generator shutdown
sequence is described in Shutting Generator Down
While Under Load or During a Utility Outage.
See Figure 3-6. An auxiliary shutdown switch (A) is
located on the exterior of the generator back panel. This
auxiliary shutdown switch shuts down generator and dis-
ables restarts.
Figure 3-6. External Auxiliary Shutdown Switch
(all models)
NOTE: Whenever possible, perform primary shutdown
procedure before disabling generator with auxiliary shut-
down switch.
NOTE: Generator will not start if auxiliary shutdown
switch is OPEN (O). Controller displays an “Auxiliary
Shutdown” alarm, and red LED “Alarm” light illuminates.
Set auxiliary shutdown switch to CLOSED (I) to clear this
condition. Clear alarm by pressing OFF button, and then
ENTER. The generator can then be placed in AUTO or
MANUAL.
Control Panel Interface
See Figure 3-7. The control panel interface (A) is located
under the enclosure lid. Verify both left and right side
locks are unlocked before attempting to lift lid of enclo-
sure. Open lid as directed in Opening the Lid.
Figure 3-7. Generator Control Panel
The 7.5A fuse is located beneath rubber cover (B) to the
right of the control panel.
Verify both left and right side locks are securely out of the
way before closing unit.
All appropriate panels must be in place during any opera-
tion of the generator. This includes operation by a servic-
ing technician while conducting troubleshooting pro-
cedures.
Using the AUTO/OFF/MANUAL
Interface
NOTE: Damage caused by mis-wiring of interconnect
wires is not warrantable.
NOTE: Select OFF button before selecting desired mode
button.
Equipment Damage. The auxiliary shutdown switch
is not to be used to power down the unit under
normal operating circumstances. Doing so will
result in equipment damage. (000399)
CAUTION
013416
A
Button Description of Operation
AUTO
Activates fully automatic system operation.
Allows unit to automatically start and exercise
generator according to exercise timer.
Enables automatic remote operation. Generator
will power up and run to charge PWRcell Bat-
tery when battery state of charge (SoC) falls
below a predetermined threshold or PWRcell
Inverter provides a remote start signal. PWRcell
Inverter may apportion power generated to both
the PWRcell Battery and AC voltage.
Green LED flashes when generator is providing
power.
OFF Shuts down engine and prevents automatic
operation of unit.
MANUAL
Cranks and starts generator. Power is only sup-
plied to the PWRcell Battery if there is demand
from PWRcell Inverter.
Blue LED illuminates when unit starts outputting
power to the PWRcell Inverter.
001798
001798
A
B

Operation
16 Owner’s Manual for PWRgenerator Air-Cooled Generators
Operating Modes
NOTE: Unit will cease power production when stop con-
ditions are met, but will continue to run while performing
a cool-down. Generator controller will display COOLING
DOWN. Unit will enter standby once cool-down is com-
plete and display STANDBY.
NOTE: Generator will only perform exercise functions in
AUTO.
Interface Menu Displays
LCD Panel
Mode Description
MANUAL
•Power will be apportioned between PWRcell
Battery and PWRcell Inverter.
•Operation of engine without power being gener-
ated is possible in this mode if PWRcell Battery
are above a predetermined FULL state of
charge and PWRcell Inverter is not connected
to any AC load.
•Unit will stop if put into OFF mode.
AUTO
•Unit starts when all conditions are met:
–Any battery module’s SoC is below Auto-
StartSoC (default 25%).
–MaxChargePower of any battery module with
SoC below AutoStartSoC is greater than Auto-
StartBatteryChargePower (default 1kW).
–The set AutoRestartDelay time (default 5
minutes) has passed since unit last AUTO
stopped.
–PWRcell ESS is in Island Mode.
OR:
–A start command has been received from
PWRcell Inverter.
–PWRcell ESS is in Island Mode.
•Starts and runs (charges PWRcell Battery if bat-
tery charge state is detected as low or start sig-
nal is received from PWRcell Inverter. Inverter
may apportion power generated to supply both
PWRcell Battery and PWRcell Inverter which
generates AC power.
•Unit will stop when any of the following condi-
tions are met:
–Generator output power is below AutoStop-
Power (default 500w) for a duration greater
than AutoStopTime (default 2 minutes).
–The SoC of all battery modules is greater
than AutoStopSoC (default 95%)
–The PWRcell ESS is not in Island Mode
–A stop command has been received from the
PWRcell Inverter.
OFF •Unit is completely shut down and must be
moved to AUTO or MANUAL to operate.
Feature Description
HOME
page
Default page displayed if no buttons are
pressed for 60 seconds. Normally shows cur-
rent status message, and current date and
time. Highest priority active alarm/warning is
automatically posted on this page, as well as
flashing the backlight when such a condition
is detected. In the case of multiple alarms/
warnings, only first message is displayed.
Press OFF button and then ENTER button to
clear an alarm or warning.
When “Hours of Protection” is displayed, this
represents total time generator has been
ready to provide backup power if needed.
Display
Backlight
Normally off. The backlight will automatically
illuminate and remain on for 30 seconds if
operator presses any button.
MAIN
MENU
page
Allows operator to navigate to all other pages
or sub-menus by using arrow keys and
ENTER button. Page can be accessed at any
time with several presses of the dedicated
ESCAPE button. Each press of the ESCAPE
button takes operator to previous menu until
MAIN MENU displays. This page contains
information for History; Status; Edit; and
Debug.