Generac Power Systems 04077-01, 04109-1, 04079-1, 00 Installation And Adjustment Manual Download Page 2

Generac

®

Power Systems, Inc.

INTRODUCTION

Thank you for purchasing a model of the Guardian

product line by Generac Power Systems Inc. These

models are compact, high performance, air-cooled,

engine-driven generators designed to automatically

supply electrical power to operate critical loads dur-

ing 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vapor withdrawn liquid propane (LP) or 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).

READ THIS MANUAL THOROUGHLY

If you do not understand any portion of this manual,

contact Generac or your nearest Generac/Guardian

Authorized Dealer for starting, operating and 

servicing procedures.
Throughout this publication, and on tags and 

decals affixed to the generator, DANGER, WARNING,

CAUTION and NOTE blocks are used to alert you to

special instructions about a particular operation that

may be hazardous if performed incorrectly or care-

lessly. Observe them carefully. Their definitions are

as follows:

After this heading, you can read instructions that,
if not strictly complied with, will result in personal
injury or property damage.

After this heading, you can read instructions that, 
if not strictly complied with, may result in personal
injury or property damage.

After this heading, you can read instructions that, if
not strictly complied with, could result in damage to
equipment and/or property.

NOTE:

After this heading, you can read explanatory
statements that require special emphasis.

These safety warnings cannot eliminate the hazards

that they indicate. Common sense and strict compli-

ance with the special instructions while performing the

service are essential to preventing accidents.
Four commonly used safety symbols accompany the

DANGER, WARNING and CAUTION blocks. The type

of information each indicates follows:

This symbol points out important safety informa-
tion that, if not followed, could endanger personal
safety and/or property of you and others.

This symbol points out potential explosion hazard.

This symbol points out potential fire hazard.

This symbol points out potential electrical shock
hazard.

The operator is responsible for proper and safe use 

of the equipment. We strongly recommend that the

operator read the 

Owner's Manual

and thoroughly

understand all instructions before using this equip-

ment. We also strongly recommend instructing other

users to properly start and operate the unit. This pre-

pares them if they need to operate the equipment in

an emergency.

OPERATION AND MAINTENANCE

It is the operator's responsibility to perform all safe-

ty checks, to make sure that all maintenance for safe

operation is performed promptly, and to have the

equipment checked periodically by a

Generac/Guardian Authorized Dealer. Normal main-

tenance service and replacement of parts are the

responsibility of the owner/operator and, as such, are

not considered defects in materials or workmanship

within the terms of the warranty. Individual operating

habits and usage contribute to the need for mainte-

nance service.
Proper maintenance and care of your generator

ensure a minimum number of problems and keep

operating expenses at a minimum. See your

Generac/Guardian Authorized Dealer for service aids

and accessories.

HOW TO OBTAIN SERVICE

When your generator requires servicing or repairs,

simply contact a Generac/Guardian Authorized

Dealer for assistance. Service technicians are factory-

trained and are capable of handling all of your 

service needs.
When contacting a Generac/Guardian Authorized

Dealer or the factory about parts and service, always

supply the complete model number and serial num-

ber of your unit as given on its data decal, which is

located on the generator’s engine.

AUTHORIZED

DEALER LOCATION

To locate the GENERAC/GUARDIAN AUTHORIZED

DEALER nearest you, please call this number:

1-800-747-1530

DEALER LOCATION INFORMATION 

CAN BE OBTAINED AT THIS NUMBER.

Summary of Contents for 04077-01, 04109-1, 04079-1, 00

Page 1: ...ustment Manual Air cooled Prepackaged Standby Generators Models Nonsound Attenuated Non SA 04077 1 6 kW 04109 1 8 kW 04079 1 10 kW Sound Attenuated SA 00789 1 8 kW 00844 1 8 kW ONLY QUALIFIED ELECTRIC...

Page 2: ...s symbol points out important safety informa tion that if not followed could endanger personal safety and or property of you and others This symbol points out potential explosion hazard This symbol po...

Page 3: ...5 1 16 Grounding the Generator 15 1 17 The Battery 16 1 17 1 Battery Installation 17 1 18 The Fuse 17 1 19 Post Installation Inspection 17 Section 2 Operation 18 2 1 Using the Auto Off Manual Switch 1...

Page 4: ...sufficient concentrations can cause unconsciousness or even death This exhaust sys tem must be installed properly in strict compli ance with applicable codes and standards Following installation you m...

Page 5: ...ediate medical help Never wear jewelry when working on this equip ment Jewelry can conduct electricity resulting in electric shock or may get caught in moving com ponents causing injury FIRE HAZARDS F...

Page 6: ...tion 85 John Street New York N Y 10038 7 AGRICULTURAL WIRING HANDBOOK available from the Food and Energy Council 909 University Avenue Columbia MO 65201 8 ASAE EP 3634 INSTALLATION AND MAINTE NANCE OF...

Page 7: ...s it may shift on lifting pipes during transportation which may result in injury The generator was not designed to be lifted by its roof Use the lifting holes or brackets provided near the base of the...

Page 8: ...st spark can ignite such fuels and cause an explosion No leakage of fuel is permitted Natural gas which is lighter than air tends to collect in high areas LP gas is heavier than air and tends to settl...

Page 9: ...rete pad Remove the packing material from the unit and unbolt the two 4 inch by 4 inch wooden blocks from the underside of the mounting base Plug the holes with the plugs provided Prepare the installa...

Page 10: ...8 Generac Power Systems Inc Figure 1 4 Generator and Transfer Switch Mounting Dimensions 6 kW 8 kW and 10 kW Non SA Section 1 Installation Guardian Air cooled Generators...

Page 11: ...Generac Power Systems Inc 9 Figure 1 4 Continued Section 1 Installation Guardian Air cooled Generators...

Page 12: ...10 Generac Power Systems Inc Figure 1 5 Generator Mounting Dimensions Sound Attenuated Section 1 Installation Guardian Air cooled Generators...

Page 13: ...ty is supply ing 120 240 volt single phase electrical service 1 9 TOTAL CIRCUIT ISOLATION METHOD If essential electrical loads cannot be grouped togeth er and wired into an emergency distribution pane...

Page 14: ...e a length of flexible conduit between the generator and any rigid conduit NOTE See also Emergency Circuit Isolation Method Section 1 8 and Total Circuit Isolation Method Section 1 9 on Page 11 1 11 1...

Page 15: ...Section 1 Installation Guardian Air cooled Generators Figure 1 10 Interconnection Diagram for Single Phase Power System Sound Attenuated Figure 1 9 Interconnection Diagram for Single Phase Power Syste...

Page 16: ...l module circuit board in the control panel Refer to the Operation section of this manual 1 13 CONTROL CIRCUIT INTERCONNECTIONS For 6 kw 8 kW and 10 kW units not including sound attenuated these inter...

Page 17: ...dip switches see Figure 1 12 which may be set up differently during installation 1 Dip switch 1 When in the ON position the board requires 20 Vac from the step down transformer to the control board t...

Page 18: ...of the battery and Disconnect charging source prior to connecting or dis connecting battery terminals Do not open or mutilate the battery Released electrolyte has been known to be harmful to the skin...

Page 19: ...black battery cable from frame ground to the battery post indicated by a nega tive NEG or Figure 1 14 Battery Cable Connections NOTE With the battery installed and utility power source voltage availab...

Page 20: ...el or during the normal exercise cycle To prevent possible injury that might be caused by such sudden starts always set the switch to OFF and remove the fuse before working on or around the generator...

Page 21: ...ts timing E Retransfer Time Delay This timer runs for about 15 SA six seconds At end of a 15 second SA six second delay circuit board action de energizes transfer relay in the transfer switch Retransf...

Page 22: ...uipped with the following systems that protect it against potentially damaging conditions 1 Low Oil Pressure Sensor 2 High Temperature Sensor 3 Overcrank 4 Overspeed On sound attenuated models there a...

Page 23: ...should be wired to the unit by a qualified electrician or Generac Guardian Authorized Dealer 2 Remote Common Alarm This allows for an alarm light horn etc to activate when any fault has occurred Lines...

Page 24: ...r switch and load circuit rat ings turn OFF the utility power supply to the transfer switch 5 Set the generator s main circuit breaker to its OFF or open position Initial tests will be con ducted at n...

Page 25: ...ing the means provided such as a util ity main line circuit breaker 4 Set the Auto Off Manual switch to AUTO The sys tem is now ready for automatic operation 5 Turn OFF the utility power supply to the...

Page 26: ...t to obtain 62 Hertz at no load 7 When frequency is correct at no load check the AC voltage reading If voltage is incorrect the volt age regulator may require adjustment Figure 3 1 6 kW Engine Governo...

Page 27: ...emove the roof to adjust the voltage regulator on nonsound attenuated units Figure 3 4 Voltage Adjustment Potentiometer NOTE The voltage regulator is housed in the generator s control panel The regula...

Page 28: ...s disconnected and then reconnected The exerciser WILL NOT work if dip switch 2 Remote Not Auto is ON 3 10 2 SOUND ATTENUATED UNITS The generator will start and exercise once every seven days During t...

Page 29: ...4 Replace control board The Auto Off Manual switch 1 Defective Auto Off Manual 1 Replace switch is set to OFF but the engine switch continues to run 2 Auto Off Manual switch 2 Check wiring and connect...

Page 30: ...LECTRICAL CONNECTIONS Complies with local code requirements and all National Electrical Codes Utility is connected and present Transfer switch is connected All wires running outside of the generator a...

Page 31: ...Generac Power Systems Inc 29 Section 5 Notes Guardian Air cooled Generators...

Page 32: ...Part No C4219 GENERAC POWER SYSTEMS INC P O BOX 8 WAUKESHA WI 53187 Revision 12 13 99 Printed in U S A...

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