Generac Power Systems 004988-2 Scheduled Maintenance, Service Maintenance Interval Information

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Section 4 — Maintenance

Guardian Liquid-cooled 27 kW and 30 kW Generators

4.7SCHEDULED MAINTENANCE

Following is a recommended maintenance schedule for Generac small standby and residential generator sets. The established intervals in the schedule are the maximum recommended when the unit is used in an average service application. They will need to be decreased (performed more frequently) if the unit is used in a severe application. Use the unit hour meter or calendar time, whichever occurs first, from the previous maintenance interval to deter- mine the next required maintenance interval.

Service Maintenance Interval Information:

The various service maintenance intervals are designated by interval numbers as follows:

1An early inspection of the generator set to ensure it is ready to operate when required and to identify any poten- tial problem areas.

Performed monthly or following each 10 hours of operation of the unit and requires approximately .5 man- hours per unit to complete.

This inspection may be performed by the end user providing the following safety steps are taken to prevent the engine from starting automatically without warning:

To prevent injury, perform the following steps in the order indicated before starting any maintenance:

Disable the generator set from starting and/or connecting to the load by setting the control panel AUTO-OFF-MANUAL switch to the “OFF” position.

Remove the control panel fuse.

Turn off the battery charger.

Remove the negative battery cable.

The battery charger must be turned off BEFORE removing the battery cable to prevent an over current condi- tion from burning out sensitive control panel components and circuits.

Following all maintenance, reverse these steps to insure the unit is returned to standby setup for normal operation when required.

2A break-in service inspection of the generator set to ensure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed ONLY ONCE following the first three months or the first 30 hours of operation after purchase of the unit and requires approximately 2.5 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

3An operational inspection of the generator set to ensure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed semi-annually or following each 50 hours of operation of the unit and requires approximately 1.5 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

4A mid-level inspection of the generator set to ensure it is ready to operate and carry the load when required, and to identify any potential problem areas.

Performed annually or following each 100 hours of operation of the unit and requires approximately 4.0 man-hours per unit to complete.

This inspection contains some maintenance tasks which require special tools, equipment, and/or knowledge to accomplish and should be performed only by an authorized Generac Service Dealer.

20 Generac® Power Systems, Inc.

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Contents Liquid-cooled, Prepackaged Standby Generators ‹ HOW to Obtain Service Authorized Service Dealer Location‹ Operation and Maintenance IntroductionTable of Contents General Hazards Electrical Hazards Automatic System Operation Transfer SwitchGenerator Generator AC Connection Systems‹ 1.7.3 LOW Coolant Level Switch ‹ 1.7.2 High Coolant Temperature Switch‹ 1.7.1 LOW OIL Pressure Switch Engine Protective DevicesUnpacking Lifting the Generator‹ 1.10.1 Generator Specifications SpecificationsReconfiguring the Fuel System ‹ 1.10.2 Engine SpecificationsEngine OIL Recommendations Torque SpecificationsBefore Installation Coolant RecommendationsBasic Standby Electric System Generator Mounting Support‹ 2.1.2 Other Published Standards Total Circuit Isolation Method Transfer Switch Signal ConnectionsEmergency Circuit Isolation Method Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.9.2 GTS-TYPE ATS Using a Standard GTS Transfer Switch ‹ 3.2.5 SET Exercise Time Switch ‹ 3.2.2 Fault Indicator LED‹ 3.2.1 AUTO/OFF/MANUAL Switch Control Console ComponentsAutomatic Operation Manual Transfer START-UP Engine Governor AdjustmentsRetransfer and Shutdown Weekly Exercise CycleCooling System Overload Protection for Engine DC Electrical SystemChecking Fluid Levels ‹ 4.5.10 Changing Engine OIL ‹ 4.5.11 Changing the Engine AIR Cleaner‹ 4.5.12 Spark Plugs ‹ 4.6.2 Battery Miscellaneous Maintenance‹ 4.6.1 Cleaning the Generator ‹ 4.6.3 Battery Maintenance‹ 4.6.4 Battery Replacement Periodic Replacement PartsScheduled Maintenance Service Maintenance Interval InformationLevel Maintenance Level Troubleshooting Points Problem Cause CorrectionGuardian Liquid-cooled 27 kW and 30 kW Generators Installation Diagram Customer Connection PCB J2 BCW LOS WLS HCT Starter Carrier Bolt Battery Post Cover RED + Boot Battery CableBattery Post Cover Baclk Hold Down Battery32 18 Intake Duct HSB Assy GRD Wire 99HSBAssembly BASE-DOOR Ground Wire Duct Discharge RH FrontGenerac Power Systems, Inc Decal AVR Cover Assy 2A 12V UL BatteryControl BOX HSB Cover Front Panel HSB61 24 Coil Ignition 3.0L Ford Wire SET 3.0L Ford notNot SHOWN-USED to Hold OIL Drain Assembly Bracket DC ALT 3.0L FordFrame Venturi 3.0L Ford HSB Tank Coolant RecoveryRadiator R-IN,L-OUT Side Support Radiator HSBTo B Assy Regulator 3.0L NG or LPV Weldment Mounting BaseFlange Fuel Inlet Washer Flat 5/16 ZincLocktight Rotor 390 25KW 1P Direct HSB 2.5L Ford Rotor 390 15KW 1P Direct HSB 2.5L FordRotor 390 20KW 1P Direct HSB 2.5L Ford Rotor 39030AD1 HSB TecumExhaust Blanket 750MM MUFFLER, 3.0L FordGasket Exhaust Ring Mufflr Strap 6IN DIATube AIR Intake 3.0L Ford Element AIR CleanerCover AIR Cleaner Washer Flat M5Warranty Schedule