Generac 004474-1 Manual Transfer and Start UP Retransfer and Shutdown, Automatic Operation

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Section 3 - Operation

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

NOTE:

WEEKLY EXERCISE CYCLE

This fuse will not remove the + battery input power from the PCB when it opens. This means the exercise timer will not be reset. If this fuse does open, care- fully check the wiring to the start, fuel, field boost and transfer outputs before replacing the fuse.

METER READING SELECTOR SWITCH:

Switch permits you to select either line-to-line or line-to-neutral voltage and amperage readings on the console AC voltmeter and AC ammeter.

SET EXERCISE TIME SWITCH:

Switch allows you to program the generator to start and exercise automatically. “See Weekly Exercise Cycle.”

MANUAL TRANSFER AND START UP

To transfer electrical loads to the “Standby” (generator) power source side and start the engine manually, refer to the Owner’s Manual of your particular transfer switch.

RETRANSFER AND SHUTDOWN

When utility power source voltage has been restored, electrical loads may be transferred back to that source and the generator can be shut down as follows:

•Verify that utility power supply voltage to the transfer switch has been positively turned “Off,” using what- ever means provided (such as utility main line circuit breaker).

•Set the generator’s main circuit breaker to its “Off” or “Open” position.

•Let the generator engine run at no-load for a few min- utes, to stabilize internal unit temperatures.

•On the generator console, set the Auto-Off-Manual switch to “Off”. Wait for engine to come to a complete stop.

•For transfer to utility position, refer to the Owner’s Manual of your particular transfer switch.

•Turn on the utility power supply to the transfer switch, using whatever means provided (such as a utility main line circuit breaker). The utility power source now powers the loads.

AUTOMATIC OPERATION

To set the system for fully automatic operation, proceed as follows:

•Check that load circuits are connected to the utility power supply.

•Set the Auto/Off/Manual switch to its “Auto” position.

•Set the generator main circuit breaker to its “On” or “Closed” position.

The generator will start and exercise once every 7 days. During this weekly exercise, the unit runs for about 20 minutes and shuts down. Transfer of loads to genera- tor output does not occur during the exercise.

To select day and time for exercising, proceed as follows:

•Set the Auto/Off/Manual switch to OFF.

•Set generator main circuit breaker to OFF or OPEN.

•Locate the rocker switch on the control panel identi- fied with the words “Set Exercise Time” (Figure 3.2).

•Push “Set Exercise Time” switch to ON position for 20 to 30 seconds and then release. Switch will spring back into its original position when released.

•Wait 30 seconds before setting the Auto/Off/Manual switch to “AUTO” position.

If you switch the Auto/Off/Manual switch too soon, the engine may start. If engine does start, it will shut down automatically in about two (2) minutes.

•Set the generator main circuit breaker to its ON or CLOSED position.

•Generator is now programmed to start and exercise every 7 days thereafter, on day and time of day the switch was actuated.

•Place a sign on the generator control panel and the transfer switch, indicating the day and time the generator will be exercising.

NOTE:

If battery terminals are disconnected or control panel fuse is removed, the exercise timer needs to be reset for correct automatic exercise operation.

Figure 3.2 - “Set Exercise” Switch

Generac® Power Systems, Inc. 13

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Contents Power SYSTEMS, INC Introduction Authorized Service Dealer LocationOperation and Maintenance HOW to Obtain ServiceIntroduction IFC Safety Rules General Hazards Electrical Hazards Generator AC Connection Systems Transfer SwitchGenerator Automatic System OperationEngine Protective Devices High Coolant Temperature SwitchLOW OIL Pressure Switch LOW Coolant Level SwitchSpecifications UnpackingLifting the Generator Engine OIL Recommendations Torque SpecificationsBefore Installation Fuel ConsumptionNfpa Standards Standby Generator InstallationGenerator Location Other Published StandardsEmergency Circuit Isolation Method Basic Standby Electric SystemTotal Circuit Isolation Method Grounding the GeneratorTransfer Switch Start Signal Connections Battery InstallationVented Batteries Using a Standard GTS Transfer Switch Preparation Before START-UPPrior to Initial START-UP Control Console Components Automatic Operation Meter Reading Selector SwitchSET Exercise Time Switch Manual Transfer and Start UP Retransfer and ShutdownChecking Fluid Levels Engine HeaterCooling System Overload Protection for Engine DC Electrical SystemMaintenance OWNER/OPERATOR can Perform Coolant Change Changing the Engine AIR CleanerBattery Replacement Miscellaneous MaintenanceCleaning the Generator BatteryTroubleshooting Points Service Maintenance Interval Information Level Maintenance Level Electrical Data Electrical Data Electrical Data AC Outlet Outlet AC Circuit FED DOOR, Enclosure Ground Wire AssemblyBRACE, Side BumperGenerac Power Systems, Inc Hinge Slip Male RH Washer NylonHinge Slip Male LH Hinge Slip Female LHGenerac Power Systems, Inc SWITCH, Toggle Dpdt CMA BOX AssemblyRocker Switch Dpst SWITCH, Selector AMP/VOLTGenerac Power Systems, Inc Switch Dpst 5 125V SPD Rckr Switch 6A AMP/V SelectorHarness Wiring 1.5L DECAL, TRANS. Switch ConnGenerac Power Systems, Inc Radiator 1.5L Tank Coolant RecoveryBracket Coolant Recovery Tank Support RadiatorGenerac Power Systems, Inc NUT HEX M6 -1.0 G8 YEL CHR Venturi 1.5LGuard FAN Hose RES 5/8 RIA 250FFlat WASHER-M8 BASE, MountingISOLATOR-VIBRATION ISOLATOR, VibrationWasher Shakeproof EXT 5/16 STL Dampener VibrationWasher Flat M8 Earth StrapNipple TOE 2 NPT X 4.5 BLK Iron Muffler W/RAIN ShldMufflr Strap 6IN DIA Elbow 90 DEG 2 NPTFlex Pipe Exhaust Manifold Exhaust 1.5LNipple TOE 1.5 NPT X 6.5 BL Iron Pipe ExhaustCircuit Breaker 70 X 2 240V 39782 Brkt Silkscreen P PanelCover BQ Circuit Breaker Bracket Mounting Circuit BreakerPP Logic ASM 50/60HZ Harness CMA WireAssy Home Stdby Logic DECAL, CMA LabelBattery Post Cover RED+ ASSY,WIRE#16 REDBolt Battery Hold Down BAR Battery HolddownAssembly Carburator Linkage Housing Governor ConnectorConnector Interface Assembly Cover Connector HousingGenerac Power Systems, Inc Assy Rotor 20KW Housing BlowerAssy Rotor 10KW Assy Rotor 15KWGenerac Power Systems, Inc Solenoid GAS Fuel Cover AIR CleanerWeldment Mounting Base Flange Fuel InletGenerac Power Systems, Inc ENGINE-1.5L Switch OIL PressureARM Adjust Alternator Ground Wire StarterInstallation Air Outlet Air Intake Installation Air Intake Your 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 WarrantyThis Warranty Shall not Apply to the Following Warranty Schedule

004371-2, 004188-1, 004474-1, 004475-1, 004370-2 specifications

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