Generac Power Systems owner manual Scheduled Maintenance, Service Maintenance Interval Information

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Section 4 — Maintenance

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

4.7SCHEDULED MAINTENANCE

The following is a recommended maintenance schedule for Generac Guardian small standby and residential gen- erator 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 mainte- nance interval to determine 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 insure 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 utility supply to engine water heater.

•Turn off the battery charger by turning off utility supply to the transfer switch.

•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 insure 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 insure 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 insure 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.

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Contents Liquid-cooled, Prepackaged Standby Generators ‹ Operation and Maintenance Authorized Service Dealer Location‹ HOW to Obtain Service IntroductionIntroduction IFC Safety Rules General Hazards Electrical Hazards Generator Transfer SwitchAutomatic System Operation Generator AC Connection Systems‹ 1.7.2 High Coolant Temperature Switch ‹ 1.7.1 LOW OIL Pressure Switch‹ 1.7.3 LOW Coolant Level Switch Engine Protective DevicesLifting the Generator UnpackingReconfiguring the Fuel System Specifications‹ 1.10.1 Generator Specifications ‹ 1.10.2 Engine SpecificationsTorque Specifications Engine OIL RecommendationsCoolant Recommendations Generator Mounting Support Generator LocationBasic Standby Electric System ‹ 2.1.1 Nfpa StandardsEmergency Circuit Isolation Method Transfer Switch Start Signal ConnectionsTotal Circuit Isolation Method Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.10.1 Vented Batteries ‹ 2.11.1 Prior to Initial START-UPUsing a Standard GTS Transfer Switch Control Console Components Manual Transfer START-UP Automatic OperationWeekly Exercise Cycle Every Three Months Engine HeaterOnce Every SIX Months Once AnnuallyCooling System Checking Fluid LevelsOverload Protection for Engine DC Electrical System ‹ 4.5.1 Check Engine OIL Level ‹ 4.5.2 Check Battery‹ 4.5.3 Exercise System ‹ 4.5.4 Inspect Cooling System‹ 4.5.11 Changing the Engine AIR Cleaner Miscellaneous Maintenance‹ 4.6.1 Cleaning the Generator ‹ 4.5.13 Coolant Change‹ 4.6.4 Battery Replacement ‹ 4.6.3 Battery MaintenanceService Maintenance Interval Information Scheduled MaintenanceLevel Maintenance Level Problem Cause Correction Troubleshooting PointsGuardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators Installation Diagram Section Electrical Data Customer Connection 120/240V 1-PHASE Electrical Data Connector Interface Assembly Housing Governor ConnectorCover Connector Housing ASM Motor StepperWasher Shakeproof EXT 5/16 STL Base Mounting 1.5L Stnrd & AcstcDampener Vibration Washer Flat 5/16 ZincWeld Stud Under Roof Panel for Access Cover Cable GRD Wire Assy 99HSB Assembly BASE-DOOR Ground WireAssembly Cover Access Cover Access GENWeld Stud Under Roof For Access Cover Cable Door Weldment 1.5 EPS Roof Acstc & Stnd Cmprtmnt 1.5LWasher Self Locking Dome Baffle Cntrl PNL 1.5L AcousticTo a Silksc Wire AssemblyHourmeter Holder FuseWaterpump Hardware ARM Adjust Alternator Switch OIL PressureGround Wire Starter Clamp for Wiring Harness not Shown16 7 Radiator 1.5L Tank Coolant RecoveryVenturi 1.5L Modine Guard FAN 1.5L ModineVapor Gasket AIR Cleaner Adapter Cover AIR CleanerWeldment Mounting Base Flange Fuel Inlet16 30 21 Assy Rotor 10KW Housing BlowerAssy Rotor 15KW Assy Rotor 20KWBOOT, Battery Cable ASSY,WIRE#16 REDBRACKET, Battery Hold Down Battery Post Cover RED+Nipple TOE 1.5NPTX5.5 BLK Iron Manifold Exhaust 1.5LSaddle 2 Inch PIPE,EXHAUST 1.5L STNDRD&ACSTCYour Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’S/OWNER’S Warranty Responsibilities Emission Related Parts Include the Following Emission Control System WarrantyWarranty Schedule

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