Generac Power Systems 004988-4 owner manual Liquid-cooled, Prepackaged Standby Generators

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Owner’s Manual

Liquid-cooled, Prepackaged

Standby Generators

Model Number: 004988-4

27kW NG, 30kW LP Vapor

This manual should remain with the unit.

ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS

SHOULD ATTEMPT INSTALLATION!!

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Contents Liquid-cooled, Prepackaged Standby Generators ‹ Operation and Maintenance Authorized Service Dealer Location‹ HOW to Obtain Service IntroductionTable of Contents  Warning   Electrical Hazards  Generator Transfer SwitchAutomatic System Operation Generator AC Connection Systems‹ 1.7.1 LOW OIL Pressure Switch ‹ 1.7.2 High Coolant Temperature Switch‹ 1.7.3 LOW Coolant Level Switch LOW OIL Presure Switch LOW Coolant Level SwitchLifting the Generator UnpackingReconfiguring the Fuel System Specifications‹ 1.10.1 Generator Specifications ‹ 1.10.2 Engine SpecificationsStandby Generator Installation Torque SpecificationsBefore Installation Engine OIL RecommendationsBasic Standby Electric System Generator Mounting Support‹ 2.1.2 Other Published Standards Emergency Circuit Isolation Method Transfer Switch Signal ConnectionsTotal Circuit Isolation Method Grounding the GeneratorPreparation Before START-UP Battery Installation‹ 2.9.2 GTS-TYPE ATS Using AN Engineered GTS Transfer Switch ‹ 3.2.2 Fault Indicator LED ‹ 3.2.1 AUTO/OFF/MANUAL Switch‹ 3.2.5 SET Exercise Time Switch Control Console ComponentsManual Transfer START-UP Engine Governor AdjustmentsRetransfer and Shutdown Automatic OperationCooling System Weekly Exercise CycleChecking Fluid Levels Overload Protection for Engine DC Electrical System‹ 4.5.8 Check FAN Belt ‹ 4.5.11 Changing the Engine AIR Cleaner‹ 4.5.9 Inspect Engine Governor ‹ 4.5.10 Changing Engine OIL‹ 4.6.3 Battery Maintenance Miscellaneous Maintenance‹ 4.6.1 Cleaning the Generator ‹ 4.5.13 Coolant Change‹ Periodic Replacement Parts ‹ 4.6.4 Battery ReplacementService Maintenance Interval Information Scheduled MaintenanceLevel Maintenance Level Problem Cause Correction Troubleshooting PointsLiquid-cooled 30 kW Generators Installation Diagram AUTO/OFF/MANUAL Switch Transfer SwitchSET Exerciser Switch Size AWGBAT Otherwise Noted AS ShownIgnition Coil On PCBSWITCH, SET Exerciser SWITCH, AUTO/OFF/MANUALDPE ALT 12V Battery REDDEG Starter Motor GOVEngine Foot Battery Post Cover Baclk Boot Battery CableBattery Post Cover RED + Hold Down BatteryTo a To B Plcs Intake Duct HSB Assy Wire 14AWG 7.5 #0 GRN/YELDuct Discharge RH Front Duct Discharge LH FrontPage Control BOX HSB Assy 2A 12V UL BatteryDecal AVR Cover Cover Front Panel HSBCooled 30 kW Drawing No Exploded Not SHOWN-USED to Hold OIL Drain Assembly Wire SET 3.0L Ford notCoil Ignition 3.0L Ford Bracket DC ALT 3.0L FordFrame Radiator R-IN,L-OUT Tank Coolant RecoveryVenturi 3.0L Ford HSB Side Support Radiator HSBTo B Flange Fuel Inlet Weldment Mounting BaseAssy Regulator 3.0L NG or LPV Washer Flat 5/16 ZincLocktight Rotor 390 20KW 1P Direct HSB 2.5L Ford Rotor 390 15KW 1P Direct HSB 2.5L FordRotor 390 25KW 1P Direct HSB 2.5L Ford Rotor 39030AD1 HSB TecumPipe Muffler OUT Exhaust Flange 2 PipeWasher Lock 3/8 SS Gasket Exhaust RingElement AIR Cleaner Plate AIR Cleaner AdapterCover AIR Cleaner Adapter Carburetor W/PVC ConnWarranty Schedule