Generac Power Systems 04758-2, 04759-2, 04760-2 Battery Installation, The Battery, Danger

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◆1.9.2 TRANSFER SWITCH

Section 1 — General Information

Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators

◆1.9.2 TRANSFER SWITCH

1.9.2.1 7 kW, 12 kW and 15 kW Units

Transfer switches for use with these generators are sold separately and can be purchased from Generac Authorized Dealers.

•Install the transfer switch on a firm, sturdy sup- porting structure.

•To prevent switch distortion, level the switch if nec- essary. This can be done by placing washers between the switch enclosure and mounting sur- face.

•Never install the switch where water or any corro- sive substance might drip onto the enclosure.

•Protect the switch at all times against excessive moisture, dust, dirt, lint, construction grit and cor- rosive vapors.

•Failure to utilize a Generac/Guardian transfer switch with this generator will void the warranty.

1.10 BATTERY INSTALLATION

Fill the battery with the proper electrolyte fluid if nec- essary and have the battery fully charged before installing it.

Before installing and connecting the battery, complete the following steps:

1.Set the generator's AUTO/OFF/MANUAL switch to OFF.

2.Turn off utility power supply to the transfer switch.

3.Remove the 5 amp and 15 amp fuses from the generator control panel.

If the AUTO/OFF/MANUAL switch is not set to its OFF position, the generator can crank and start as soon as the battery cables are connect- ed. If the utility power supply is not turned off, sparking can occur at the battery posts and cause an explosion.

Battery cables were factory connected at the genera- tor (Figure 1.5). Connect cables to battery posts as follows:

4.Connect the red battery cable (from starter con- tactor) to the battery post indicated by a positive, POS or (+).

5.Connect the black battery cable (from frame ground) to the battery post indicated by a nega- tive, NEG or (—).

6.Replace the 5 amp and 15 amp fuses in the gen- erator control panel.

NOTE:

Damage will result if battery connections are made in reverse.

Figure 1.5 – Battery Cable Connections

NOTE:

The generator is equipped with a battery trickle charger that is active when the unit is set up for automatic operation. With the battery installed and utility power source voltage available to the transfer switch, the battery receives a trickle charge while the engine is not running, to prevent self-discharge. The trickle charger is designed to help extend the life of the battery by maintaining the battery when the unit is not running. The trickle charge feature cannot be used to recharge a discharged battery.

1.11 THE BATTERY

Servicing of the battery is to be performed or super- vised by personnel knowledgeable of batteries and the required precautions. Keep unauthorized person- nel away from batteries.

When replacing the battery, use the following type of battery: Group 26/26R 12-volt battery with a rating of 350 cold-cranking amps minimum for 7 kW; 525 cold-cranking amps minimum for 12 and 15 kW at -17.8º C (0º F) minimum. When using a maintenance- free battery, it is not necessary to check the specific gravity or electrolyte level. Have these procedures performed at the intervals specified in the “Service Schedule.” A negative ground system is used. Battery connections are shown on the wiring diagrams. Make sure the battery is correctly connected and terminals are tight. Observe battery polarity when connecting the battery to the generator set.

1.10 BATTERY INSTALLATIONFigure 1.5 – Battery Cable Connections DANGER

Do not dispose of the battery in a fire. The battery is capable of exploding.

A battery presents a risk of electrical shock and high short circuit current. The following precautions are to be observed when working on batteries:

Generac® Power Systems, Inc. 9

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Contents Installation and Owner’s Manual Models 04758-2 6 kW NG, 7 kW LP 04759-2 12 kW NG, 12 kW LP04760-2 13 kW NG, 15 kW LP This manual should remain with the unitINTRODUCTION ‹ CONTENTS‹ OPERATION AND MAINTENANCE ‹ HOW TO OBTAIN SERVICEIntroduction during operation. Exercise care near running generators GENERAL HAZARDSDespite the safe design of this generator Parts of the generator are rotating and/or hot‹ STANDARDS INDEX ELECTRICAL HAZARDSFIRE HAZARDS EXPLOSION HAZARDSDANGER 1.1 UNPACKING/INSPECTION1.2 PROTECTION SYSTEMS 1.3 SYSTEM SET LEDFigure 1.2 - 12 kW/15 kW, V-twin GT-990/760 Engine 1.4 THE GENERATORFigure 1.1 - 7 kW, Single Cylinder GH-410 Engine ‹ 1.5.2 ENGINE 1.5 SPECIFICATIONS‹ 1.5.1 GENERATOR DANGER 1.8 RECONFIGURING THE FUEL SYSTEM1.6 FUEL REQUIREMENTS AND RECOMMENDATIONS 1.7 FUEL CONSUMPTIONFigure 1.4 - Demand Regulator 1.9 LOCATION1.8.2 12KW AND 15KW, 990CC ENGINES 1.9.1 GENERATORFigure 1.5 - Battery Cable Connections 1.10 BATTERY INSTALLATION1.11 THE BATTERY 1.9.2 TRANSFER SWITCH 1.9.2.1 7 kW, 12 kW and 15 kW Units2.3 ELECTRICAL CHECKS 2.2 CHECK TRANSFER SWITCH OPERATION2.1 BEFORE INITIAL START-UP 2.5 CHECKING AUTOMATIC OPERATION 2.4 GENERATOR TESTS UNDER LOADFigure 2.1 - Dual Fuel Regulators 2.6 ADJUSTING THE REGULATOR NATURAL GAS ONLYFigure 2.2 - Placement of Regulator Figure 2.5 - V-twin Full Load Speed Adjust Screw 2.7 ENGINE GOVERNOR ADJUSTMENTFigure 2.4 - V-twin Engine Governor Adjustment Figure 2.3 - Single Cylinder Engine Governor AdjustmentFigure 2.6 - Voltage Adjustment Potentiometer 2.8 VOLTAGE REGULATOR ADJUSTMENT3.1 BREAK-IN PROCEDURE 3.2 USING THE AUTO/OFF/MANUAL SWITCH FIGURE‹ 3.5.1 TRANSFER TO GENERATOR POWER SOURCE 3.3 AUTOMATIC TRANSFER OPERATION3.5 MANUAL TRANSFER OPERATION 3.4 SEQUENCE OF AUTOMATIC OPERATIONFigure 3.2 - Manual Transfer Switch Operation ‹ 3.5.2 TRANSFER BACK TO UTILITY POWER SOURCE‹ 3.7.1 LOW OIL PRESSURE SWITCH ‹ 3.7.2 HIGH TEMPERATURE SWITCH‹ 3.7.3 OVERCRANK Figure 3.3 - Low Oil Pressure and High Temperature Switches4.2 CHECKING THE ENGINE OIL LEVEL 4.1 FUSE4.4 CHANGING THE OIL FILTER 4.5 CHANGING THE ENGINE AIR CLEANER‹ 4.3.2 OIL CHANGE PROCEDURE 4.3 CHANGING THE ENGINE OILFigure 4.8 - Setting the Spark Plug Gap 4.7 BATTERY MAINTENANCEFigure 4.6 - 7 kW, Engine Air Cleaner Location Figure 4.7 - 12 kW and 15 kW Engine Air Cleaner4.9 COOLING SYSTEM 4.8 ADJUSTING VALVE CLEARANCEFigure 4.10 - Valve Clearance Adjustment 4.10 ATTENTION AFTER SUBMERSION 4.12 OUT OF SERVICE PROCEDURE‹ 4.12.2 RETURN TO SERVICE ‹ 4.12.1 REMOVAL FROM SERVICE4.13 SERVICE SCHEDULE CORRECTION 5.1 TROUBLESHOOTING GUIDEPROBLEM CAUSESection 6 - Electrical Data 24 Generac Power Systems, IncENGINE WIRING CONNECTION CONTROL PANEL BOXCUSTOMER 26 Generac Power Systems, Inc Electrical Schematic - 12 & 15 kW - Drawing No. 0D8501-BSection 6 - Electrical Data Section 6 - Electrical Data 28 Generac Power Systems, IncCUSTOMER 224A 30 Generac Power Systems, Inc225A Electrical Schematic - 7 kW - Drawing No. 0D9014-C 32 Generac Power Systems, Inc Section 7 - Exploded Views and Parts ListsPART NO. QTY. DESCRIPTION 34 Generac Power Systems, Inc PART NO. QTY. DESCRIPTION 35, 36, 40 36 Generac Power Systems, Inc27, 28 DESCRIPTION PART NO. QTY38 Generac Power Systems, Inc DESCRIPTION 14 20 40 Generac Power Systems, Inc1.25 FT 1.8 FT42 Generac Power Systems, Inc 1.33 FT 2.6 FT3 FT 44 Generac Power Systems, Inc DESCRIPTION 46 Generac Power Systems, Inc DESCRIPTION 48 Generac Power Systems, Inc DESCRIPTION Guardian Air-cooled 7 kW, 12 Drawing No. 0D3739-B 50 Generac Power Systems, IncALL DIMENSIONS IN MILLIMETERS INCHES Section 8 - MountingSection 9 - Notes CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONSMANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGE PURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIESEMISSION RELATED PARTS INCLUDE THE FOLLOWING EMISSION CONTROL SYSTEM WARRANTYTHIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING GENERAC POWER SYSTEMS TWO YEAR LIMITED WARRANTY FOR GUARDIANPREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS WARRANTY SCHEDULE
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