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INTRODUCTION

Thank you for purchasing this model of the standby 
generator set product line.

Every effort was expended to make sure that the 
information and instructions in this manual were 
both accurate and current at the time the manual was 
written. However, the manufacturer reserves the right 
to change, alter or otherwise improve this product(s) 
at any time without prior notice.

READ THIS MANUAL THOROUGHLY

If any portion of this manual is not understood, con-
tact the nearest Authorized Service Dealer for start-
ing, 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 person-
nel to special instructions about a particular service 
or operation that may be hazardous if performed 
incorrectly or carelessly. Observe them carefully. 
Their definitions are as follows:

DANGER

    After this heading, read instructions that, if not 

strictly complied with, will result in personal injury 
or property damage.

    After this heading, read instructions that, if not 

strictly complied with, may result in personal 
injury or property damage.

    After this heading, read instructions that, if not 

strictly complied with, could result in damage to 
equipment and/or property.

NOTE:

    After this heading, 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 is as follows:

  This symbol points out important safety infor-

mation that, if not followed, could endanger 
personal safety and/or property of others.

  This symbol points out potential explosion 

hazard.

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  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. The manufacturer strongly recom-
mends that the operator read this Owner's Manual 
and thoroughly understand all instructions before 
using this equipment. The manufacturer also strong-
ly recommends instructing other users to properly 
start and operate the unit. This prepares them if they 
need to operate the equipment in an emergency.

OPERATION AND MAINTENANCE

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 Authorized 
Service Dealer. Normal maintenance 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 maintenance service.

Proper maintenance and care of the generator ensure 
a minimum number of problems and keep operating 
expenses at a minimum. See an Authorized Service 
Dealer for service aids and accessories.

Operating instructions presented in this manual 
assume that the standby electric system has been 
installed by an Authorized Service Dealer or other 
competent, qualified contractor. Installation of this 
equipment is not a “do-it-yourself” project.

HOW TO OBTAIN SERVICE

When the generator requires servicing or repairs, 
simply contact an Authorized Service Dealer for 
assistance. Service technicians are factory-trained 
and are capable of handling all service needs.

When contacting an Authorized Service Dealer or the 
factory about parts and service, always supply the 
complete model number of the unit as given on the 
front cover of this manual or on the DATA LABEL 
affixed to the unit.

‹

‹

AUTHORIZED SERVICE DEALER LOCATION

To locate the nearest AUTHORIZED

SERVICE DEALER, please call this number:

1-800-333-1322

or locate us on the web at:

www.generac.com

Standby Generator Sets

Important Safety Instructions

Safety 001  Re

v. 0  08/05

Summary of Contents for Guardian 005336-0

Page 1: ...d of reliability Serial Number 1 6L 20kW Models 005336 0 005337 0 CAUTION ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS SHOULD ATTEMPT INSTALLATION DEADLY EXHAUST FUMES OUTDOOR INSTALLATION ONLY Not inte...

Page 2: ...Start up Checklist 8 2 Preparation for Start up 8 2 Start up Inspection 8 2 OPERATION 9 1 Generator Control and Operation 9 1 Operating Unit with Manual Transfer Switch 9 1 Engine Start up and Transfe...

Page 3: ...ator is installed operated and serviced in accordance with the manufacturer s instructions and recommendations Following installation do nothing that might render the unit unsafe or in noncompliance w...

Page 4: ...will result in damage to the generator and may also result in injury or death to utility power workers due to backfeed of electrical energy Generators installed with an automatic transfer switch will...

Page 5: ...ard This symbol points out potential electrical shock hazard The operator is responsible for proper and safe use of the equipment The manufacturer strongly recom mends that the operator read this Owne...

Page 6: ...is manual or to the data label affixed to the unit Generator Model and Serial Number This number is the key to numerous engineering and manufacturing details pertaining to your unit Always supply this...

Page 7: ...y result in an engine failure NOTE For temperatures below 32 F it is strongly recom mended to use the optional Cold Weather Start Kit part number listed in the Specification Section The oil grade for...

Page 8: ...g cranking and operating Should oil pressure drop below the 8 psi range switch contacts close and the engine shuts down The unit should not be restarted until oil is added and the AUTO OFF MANUAL swit...

Page 9: ...sure sufficient gas pressure is available to operate the primary regulator Gas pressure at the inlet to the fuel shutoff sole noid should not exceed approximately 14 inches water column 0 5 psi Optim...

Page 10: ...Steady State Regulation 25 Adjustments Speed Selectable Engine Lubrication System Type of Oil Pump Gear Oil Filter Full Flow Cartridge Crankcase Oil Capacity 4 U S qts COOLING SYSTEM Type Closed Wate...

Page 11: ...switch inside the control panel must be in the LP or NG position when switching to differ ent fuels Figure 6 2 Reconfigure the Fuel System NG FUEL SYSTEM LP FUEL SYSTEM Port 1 Port 2 FUEL HOSE BRASS H...

Page 12: ...reaker ter minal is 240V The rated voltage between each circuit breaker terminal and the neutral point 00 is 120V Figure 7 1 Four lead Single phase Stator ALTERNATOR POWER WINDING CONNECTIONS 3 PHASE...

Page 13: ...il level in the generator gearbox if so equipped prior to initial use and at the intervals indicated by the Service Schedule The recom mended oil is SAE 90 gear lubricant Also if the engine is equippe...

Page 14: ...on The engine should now crank and start Check voltage at the generator terminals For 3 phase units check phase rotation at the transfer switch terminals The generator phase rotation must match the ut...

Page 15: ...ansfer handle to its UTILITY NORMAL position with load circuits connected to the utility power supply Set the standby generator s main line circuit break er to its OFF or OPEN position Start the gener...

Page 16: ...bstructed for contin ued proper operation This includes such obstruc tions as high grass weeds brush leaves and snow Without sufficient cooling and ventilating air flow the engine generator quickly ov...

Page 17: ...damage deterioration leaks etc Correct any discrepancies found Check hose clamps for tightness CHECK ENGINE COOLANT LEVEL See Checking Fluid Levels PERFORM VISUAL INSPECTION Complete a thorough visua...

Page 18: ...ngine and check for oil leaks CHANGING THE ENGINE AIR CLEANER To replace the engine air cleaner simply remove the air cleaner cover and replace the air filter making sure it is positioned properly bef...

Page 19: ...e following procedure should be followed for inspection 1 Inspect the battery posts and cables for tightness and corrosion Tighten and clean as necessary 2 Check the battery fluid level of unsealed ba...

Page 20: ...tery cable to prevent an over current condition from burning out sensitive control panel components and circuits Following all maintenance reverse these steps to insure the unit is returned to standby...

Page 21: ...gas engine driven units Tighten connections as necessary 6 Check the air inlets and outlets for debris Clean as necessary 7 Check the battery electrolyte level if accessible Adjust as necessary 8 Chec...

Page 22: ...d exercise the unit at full rated load use a load bank if the site load is not enough for at least 2 hours looking for leaks loose connections or components and abnormal operating conditions Correct a...

Page 23: ...ded in SPECIFICATIONS Engine starts then shuts down 1 Engine oil level is low 1 Check oil and add oil as needed 2 Engine is overheated 2 Check cooling system for leaks 3 Defective Low Oil Pressure Swi...

Page 24: ...Standby Generator Sets Notes...

Page 25: ...Standby Generator Sets Notes...

Page 26: ...Standby Generator Sets Notes...

Page 27: ...Standby Generator Sets Notes...

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Page 29: ...T HEX 3 8 16 STEEL 20 022237 1 WASHER LOCK 3 8 21 057329 1 LUG SLDLSS 350 6 X 13 32 AL CU 22 057073 1 JUNCTION BLOCK 3 8 16 23 023484J 1 BUSHING SNAP SB 2000 26 24 0E3257 15 SCREW HWHTF M6 1 0 X 16 25...

Page 30: ......

Page 31: ...4B 4 BOLT STATOR X 16 LG 14 0A9375 4 SCREW RHM 10 24 X 2 15 022152 4 WASHER LOCK 10 16 0G0430 1 FLYWHEEL RING GEAR ASSY 1 6L 17 042558 1 KEY SQ 3 8 X 1 STEEL 18 0G1452 1 PLATE SPACER 1 6L 19 0G0965 1...

Page 32: ......

Page 33: ...KR DPST 125V SPD 24 0E4494 1 SWITCH RKR DPDT ON OFF ON 25 0F3215 1 DECAL CONTROL HSB 26 0F6305 2 SEAL COVER 3 18 X 12 7 X 382 27 0F6305A 1 SEAL COVER 3 18 X 12 7 X 283 28 0F5886 3 SCREW HHPM M5 0 8 X...

Page 34: ......

Page 35: ...6 1 0 X 20 G8 8 20 0G0932 1 GUARD FAN LH C1 21 0G0933 1 GUARD FAN RH C1 22 0C7649 1 CLAMP HOSE 38 87 23 0F7320 1 BLOCK OFF UPPER 24 0F1433 1 BRACKET 2 5L FORD WATER BOTTLE 25 076749 1 TANK COOLANT REC...

Page 36: ......

Page 37: ...F BATTERY 12VDC 75 AH 26 7 050331A 1 BATT POST COVER RED 8 050331 1 BATT POST COVER BLK 9 038805J 1 CABLE BATTERY BLK 1 X 30 00 10 038804N 1 CABLE BATT RED 1 X15 00 11 045771 REF NUT HEX M8 1 25 G8 YE...

Page 38: ......

Page 39: ...5 16 ZINC 7 022129 12 WASHER LOCK M8 5 16 8 045771 4 NUT HEX M8 1 25 G8 YEL CHR 9 071956 4 WASHER FLAT M8 10 051730 4 SCREW HHC M8 1 25 X 60 G8 8 11 021991 1 EARTH STRAP 13 026850 1 WASHER SHAKEPROOF...

Page 40: ......

Page 41: ...M8 1 25 27 061652 1 SCREW HHC M10 1 5 X 85 G8 8 28 057644 4 SCREW HHC M10 1 5 X 100 G8 8 29 0A7387 4 SCREW HHC M10 1 5 X 40 G10 9 30 039414 1 SCREW HHC M8 1 25 X 35 G8 8 31 022129 4 WASHER LOCK M8 5...

Page 42: ......

Page 43: ...0 X 10 G8 8 7 022097 5 WASHER LOCK M6 1 4 8 084543A 1 SCREW PHM M3 0 5 X 12MM 9 098783 1 LEVER STEPPER MOTOR 10 037398 2 NUT LOCK HEX 10 32 NYL INS 11 0E1326 1 ASSY CARBURETOR LINKAGE ROD 12 0A7106 1...

Page 44: ......

Page 45: ...1 SCREW THROTTLE PIN STOP 1 35 0E1108 1 THROTTLE ARM REWORK 1 36 033138 1 SCREW HHM 10 32 X 5 8 1 37 022152 1 WASHER LOCK 10 1 38 0E0645 1 LEVER THROTTLE STOP 1 39 034339 1 BARBED EL 90 3 8 NPT X 5 8...

Page 46: ......

Page 47: ...JS 19 078115 20 WASHER SELF LOCKING DOME 20 0F3890B 2 RETAINER INSULATION 820 21 0F3890 4 RETAINER INSULATION 450 22 0F7365 2 INSULATION SIDE DOOR C1 23 0F7365B 1 INSULATION REAR DOOR C1 CPL 24 0F736...

Page 48: ......

Page 49: ...RAP 7 0C6119 1 BOLT U 5 16 18 X 2 1 4 8 036434 3 BOLT U 5 16 18 X 2 09 9 036449 3 SADDLE 2 INCH 10 022129 8 WASHER LOCK M8 5 16 11 022259 6 NUT HEX 5 16 18 STEEL 12 038750 1 SCREW HHC M6 1 0 X 30 G8 8...

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Page 64: ...aminated fuels oils coolants antifreeze or lack of proper fuels oils or coolants antifreeze 4 Units sold rated or used for Prime Power Trailer Mounted or Rental Unit applications as Generac Power Syst...

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