Generac Power Systems 8 KVA User manual

Owner’s Manual
50 Hz Air-Cooled Generators
8 kVA to 13 kVA
SAVE THIS MANUAL FOR FUTURE REFERENCE
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000918
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)
(000209a)
WARNING
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 50 Hz Air-Cooled Generators
Use this page to record important information about your generator set.
Record the information found on your 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
partition, to the left of the control panel console as shown in
Figure 2-1. See Operation for directions on how to open the
top lid and remove the front panel.
When contacting an Independent Authorized Service Dealer
(IASD) about parts and service, always supply the complete
model and serial numbers of the unit.
Operation and Maintenance: Proper maintenance and care
of the generator ensures a minimum number of problems
and keeps operating expenses at a minimum. It is the
operator’s responsibility to perform all safety checks, to
make sure that all maintenance for safe operation is
performed promptly, and to have the equipment checked
periodically by 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 Independent Authorized Service
Dealer for assistance. Authorized service technicians are
factory–trained and are capable of handling all service
needs.To locate the nearest Independent Authorized Service
Dealer, please visit the dealer locator at:
www.generac.com/Service/DealerLocator/
Model:
Serial:
Prod Date Week:
Volts:
LPV Amps:
NG Amps:
Hz:
Phase:
Controller P/N:
(000005)
WARNING
California Proposition 65. This product contains or
emits chemicals known to the state of California to
cause cancer, birth defects, and other reproductive
harm.
(000004)
WARNING
California Proposition 65. Engine exhaust and some
of its constituents are known to the state of California
to cause cancer, birth defects, and other reproductive
harm.

Owner’s Manual for 50 Hz Air-Cooled Generators iii
Section 1: Safety Rules & General
Information
Introduction ..........................................................1
Read This Manual Thoroughly ....................................1
How to Obtain Service .................................................1
Safety Rules .........................................................2
General Hazards .........................................................2
Exhaust Hazards .........................................................3
Electrical Hazards .......................................................3
Fire Hazards ................................................................4
Explosion Hazards ......................................................4
Section 2: General Information
The Generator ......................................................5
Specifications ......................................................6
Generator ....................................................................6
Engine .........................................................................6
Protection Systems .............................................7
Emission Information ..........................................7
Fuel Requirements ..............................................7
Battery Requirements .........................................7
Battery Charger ....................................................7
Engine Oil Requirements ....................................7
Activating the Generator .....................................7
Replacement Parts ..............................................8
Accessories ..........................................................8
Section 3: Operation
Site Prep Verification ...........................................9
Generator Enclosure ...........................................9
Opening the Lid ...........................................................9
Removing the Front Access Panel ..............................9
Intake Side Panel Removal .......................................10
Generator Main Line Circuit Breaker .........................10
LED Indicator Lights ..................................................10
Control Panel Interface .....................................11
Using the AUTO/OFF/MANUAL Interface ........11
Interface Menu Displays ....................................11
The LCD Panel ..........................................................11
Menu System Navigation ..........................................12
Setting the Exercise Timer ............................... 14
Battery Charger ................................................. 14
Manual Transfer Operation ............................... 14
Transfer to Generator Power Source ........................14
Transfer to Utility Power Source ................................15
Automatic Transfer Operation ......................... 15
Automatic Sequence of Operation .................. 16
Utility Failure ..............................................................16
Cranking ....................................................................16
Cold Smart Start ........................................................16
Load Transfer ............................................................16
Shutting Generator Down While Under Load Or
During An Extended Outage ............................ 16
To turn the generator OFF (while running in AUTO
and online): ...............................................................16
To turn the generator back ON: .................................16
Section 4: Maintenance
Maintenance ....................................................... 23
Preparing for Maintenance ............................... 23
Performing Scheduled Maintenance ............... 23
Service Schedule ............................................... 24
Checking Engine Oil Level ............................... 25
Engine Oil Requirements ..........................................25
Changing the Oil and Oil Filter ......................... 26
Servicing the Air Cleaner .................................. 26
Spark Plugs ........................................................ 26
Valve Clearance Adjustment ............................ 27
Check Valve Clearance .............................................27
Adjust Valve Clearance .............................................27
Battery Maintenance ......................................... 28
Cleaning the Sediment Trap ............................. 29
Attention After Submersion ............................. 29
Corrosion Protection ........................................ 29
Remove From, and Return To
Service Procedure ............................................. 29
Remove From Service ...............................................29
Return to Service .......................................................30
Table of Contents

Table of Contents
iv Owner’s Manual for 50 Hz Air-Cooled Generators
Section 5: Troubleshooting / Quick
Reference Guide
Generator Troubleshooting ..............................31
Quick Reference Guide .....................................32
Section 6: Quick Reference Guide
System Diagnosis ..............................................35

Safety Rules & General Information
Owner’s Manual for 50 Hz Air-Cooled Generators 1
Section 1: Safety Rules & General Information
Introduction
Thank you for purchasing this compact, high
performance, air-cooled, engine-driven generator. It is
designed to automatically supply electrical power to
operate critical loads during a utility power failure.
This unit is factory installed in an all-weather, metal
enclosure that is intended exclusively for outdoor
installation. This generator will operate using either vapor
withdrawn liquid propane (LP) or natural gas (NG).
NOTE: This generator is suitable for supplying typical
residential loads such as induction motors (sump pumps,
refrigerators, air conditioners, furnaces, etc.), electronic
components (computer, monitor, TV, etc.), lighting loads,
and microwaves, when sized properly.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer reserves the right to make technical
updates, corrections, and product revisions at any time
without notice.
Read This Manual Thoroughly
If any portion of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) for starting, operating, and servicing procedures.
This manual must be used in conjunction with the
appropriate installation manual.
SAVE THESE INSTRUCTIONS: The manufacturer
suggests that this manual and the rules for safe operation
be copied and posted near the unit installation site.
Safety should be stressed to all operators and potential
operators of this equipment.
Throughout this publication and on tags and decals
affixed to the generator, DANGER, WARNING, and
CAUTION blocks are used to alert personnel to special
instructions about a particular operation that may be
hazardous if performed incorrectly or carelessly. Observe
them carefully. Their definitions are as follows:
NOTE: Notes provide additional information important to
a procedure or component.
These safety alerts cannot eliminate the hazards they
indicate. Observing safety precautions and strict compli-
ance with the special instructions while performing the
action or service are essential to preventing accidents.
The operator is responsible for proper and safe use of
the equipment. The manufacturer strongly recommends
that if the operator is also the owner, to read the owner’s
manual and thoroughly understand all instructions before
using this equipment. The manufacturer also strongly
recommends instructing other users to properly start and
operate the unit. This prepares them if they need to
operate the equipment in an emergency.
How to Obtain Service
Contact an IASD for assistance when the generator
requires servicing or repairs. Service technicians are
factory-trained and are capable of handling all service
needs. Please visit the dealer locator at:
www.generac.com/Service/DealerLocator/ to locate
the nearest IASD.
When contacting a dealer about parts and service,
always supply the complete model and serial numbers of
the unit as given on its data plate (decal), which is
located on the generator. See Figure 2-1 for decal
location. Record the model and serial numbers in the
spaces provided on the inside front cover of this manual.
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
(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 Rules & General Information
2Owner’s Manual for 50 Hz Air-Cooled Generators
Safety Rules
Study these SAFETY RULES carefully before installing,
operating, or servicing this equipment. Become familiar
with this owner’s manual and with the unit. The generator
can operate safely, efficiently, and reliably only if it is
properly installed, operated, and maintained. Many
accidents are caused by failing to follow simple and
fundamental rules or precautions.
The manufacturer cannot anticipate every possible
circumstance that might involve a hazard. The 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 the manufacturer does not
specifically recommend, verify that it is safe for others
and does not render the generator unsafe.
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.
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
(000191)
DANGER
(000209a)
WARNING
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.
WARNING
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.
See individual unit specifications for required
maintenance and run times pertaining to use. (000247)
(000130)
WARNING
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.
(000182)
WARNING
(000187)
WARNING
(000155)
WARNING
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 damage to equipment or property.
(000115)
WARNING
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.
(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.
WARNING
Risk of injury. Do not operate or service this
machine if not fully alert. Fatigue can impair the
ability to service this equipment and could result
in death or serious injury. (000215)

Safety Rules & General Information
Owner’s Manual for 50 Hz Air-Cooled Generators 3
•Inspect the generator regularly, and contact the
nearest IASD for parts needing repair or
replacement.
Exhaust Hazards
•The generator must be installed and operated
outdoors only.
Electrical Hazards
WARNING
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.
(000228)
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. (000216)
Asphyxiation. Running engines produce
carbon monoxide, a colorless, odorless,
poisonous gas. Carbon monoxide, if not
avoided, will result in death or serious injury.
(000103)
DANGER
(000178a)
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.
WARNING
(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.
(000144)
DANGER
Electrocution. Contact with bare wires,
terminals, and connections while generator
is running will result in death or serious injury.
(000150)
DANGER
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.
(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.

Safety Rules & General Information
4Owner’s Manual for 50 Hz Air-Cooled Generators
Fire Hazards
Comply with regulations the local agency for workplace
health and safety has established. Also, verify that the
generator is installed in accordance with the
manufacturer’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
WARNING
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. (000217)
WARNING
Fire and explosion. Installation must comply
with all local, state, and national electrical
(000218)
building codes. Noncompliance could result in unsafe
operation, equipment damage, death or serious injury.
WARNING
Fire hazard. Use only fully-charged fire
(000252)
extinguishers rated according to applicable industry
standards. Improperly rated fire extinguishers will not
extinguish electrical fires in standby generators.
(000100a)
WARNING
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
to use required safety equipment could result
in death or serious injury. (000257)
Electrocution. Refer to local codes and
standards for safety equipment required when
working with a live electrical system. Failure
(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
(000151)
DANGER
Connection of fuel source must be done by a qualified
professional technician or contractor. Incorrect installation
of this unit will result in death, serious injury, and damage
to equipment and property 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.

General Information
Owner’s Manual for 50 Hz Air-Cooled Generators 5
Section 2: General Information
The Generator
Figure 2-1. Components and Control Locations
A. Lock with Cover E. Battery Compartment
(Battery not supplied)
J. Oil Fill Cap N. Sediment Trap
B. Main Line Circuit
Breaker (Generator
Disconnect)
F. Exhaust Enclosure K. Oil Filter O. Fuel Regulator
C. Airbox with Air Cleaner G. Status LED Indicators L. Composite Base P. Fuel Inlet
D. Control Panel H. Oil Drain M. Oil Dipstick Q. Data Plate Location
001786
A
C
E
B
D
F
A
G
H
K
J
L
M
N
O
P
Q

General Information
6Owner’s Manual for 50 Hz Air-Cooled Generators
Specifications
Generator
Engine
The specification sheet for your generator was included in the documentation provided with the unit at the time of
purchase. For additional copies, consult your local Independent Authorized Service Dealer (IASD) for your specific
generator model.
Model 8 kVA 10 kVA 13 kVA
Rated Voltage 220/230/240
Rated Maximum Load
Current (Amps) at Rated
Voltage*
36.4 / 34.8 / 33.3 45.5 / 43.5 / 41.7 59.1 / 56.5 / 54.2
Main Circuit Breaker 40 Amp 50 Amp 63 Amp
Phase 1
Rated AC Frequency 50 Hz
Battery Requirement Group 26R, 12 Volts and 540 CCA Minimum
(See Replacement Parts)
Enclosure Aluminum
Weight (lbs./ kilos) 341 / 154.7 389 / 176.4 425 / 192.8
Normal Operating Range
This unit is tested in accordance to UL 2200 standards with an operating temperature of -20 ºF (-29 ºC) to 122 ºF
(50 ºC). For areas where temperatures fall below 32 ºF (0 ºC) a cold weather kit is recommended. When operated
above 77 ºF (25 ºC) there may be a decrease in engine power. (Please reference the engine specifications section.
These generators are rated in accordance with UL 2200, Safety Standard for Stationary Engine Generator Assemblies, and CSA-C22.2 No. 100-04
Standard for Motors and Generators.
* Natural Gas ratings will depend on specific fuel BTU / joules content. Typical derates are between 10-20% off the LP gas rating.
** Circuits to be moved must be protected by same size breaker. For example, a 15 amp circuit in the main panel must be a 15 amp circuit in the
transfer switch.
Model 8 kVA 10 kVA / 13 kVA
Type of Engine GTH-530 GT-999
Number of Cylinders 2 2
Displacement 530 cc 999 cc
Cylinder Block Aluminum w/ cast iron sleeve
Recommended Spark Plug See Replacement Parts
Spark Plug Gap 0.030 in (0.76 mm) 0.040 in (1.02 mm)
Valve Clearance 0.002–0.004 in
(0.05–0.1 mm)
0.002–0.004 in
(0.05–0.1 mm)
Starter 12 VDC
Oil Capacity Including Filter Approx. 1.7 qt (1.6 L) Approx. 1.9 qt (1.8 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 about 3.5% for
each 1000 ft (304.8 m) above sea level, and also will decrease about 1% for each 10 °F (6 °C) above 60 °F (15 °C) ambient temperature.