Generac Power Systems 04758-2, 04759-2, 04760-2 Specifications, ‹ 1.5.1 GENERATOR, ‹ 1.5.2 ENGINE

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1.5 SPECIFICATIONS

Section 1 — General Information

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

1.5 SPECIFICATIONS

‹ 1.5.1 GENERATOR

 

 

Model 04758

 

Model 04759

Model 04760

Rated Max. Continuous Power Capacity (Watts*)

6,000 NG/7,000 LP

 

12,000 NG/12,000 LP

13,000 NG/15,000 LP†

Rated Voltage

120/240

 

120/240

120/240

Rated Max. Continuous Load Current (Amps)

 

 

 

 

 

120 Volts +

50.0 NG/58.3 LP

 

100.0 NG/100.0 LP

108.3 NG/125.0 LP

 

240 Volts

25.0 NG/29.2 LP

 

50.0 NG/50.0 LP

54.2 NG/62.5 LP

Main Line Circuit Breaker

30 Amp

 

50 Amp

70 Amp

Phase

1

 

1

1

Number of Rotor Poles

2

 

2

2

Rated AC Frequency

60 Hz

 

60 Hz

60 Hz

Power Factor

1

 

1

1

Recommended Air Filter

Generac Part # C8127

Generac Part # C8127

Generac Part # C8127

Battery Requirement

Group 26/26R

 

Group 26/26R

Group 26/26R

at -17.8° C (0° F)

12 Volts and

 

12 Volts and

12 Volts and

 

 

350 Cold-cranking

 

525 Cold-cranking

525 Cold-cranking

 

 

Amperes Minimum

 

Amperes Minimum

Amperes Minimum

Weight

452 Pounds

 

470 Pounds

487 Pounds

Output Sound Level @ 23 ft (7m) at full load

68 db (A)

 

70.5db (A)

71.5 db (A)

Normal Operating Range

 

-20°F (-28.8°C) to 104°F (40°C)

*Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum power decreases about 3.5 percent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 6° C (10° F) above 16° C (60° F).

+Total current in TWO separate curcuits. Current in each curcuit must not exceed the value stated for 240V.

‹1.5.2 ENGINE

 

Model 04758

Model 04759

Model 04760

Type of Engine

GH-410

GT-990

GT-990

Number of Cylinders

1

2

2

Rated Horsepower

14.5 @ 3,600 rpm

30 @ 3,600 rpm

30 @ 3,600 rpm

Displacement

410cc

992cc

992cc

Cylinder Block

Aluminum w/Cast

Aluminum w/Cast

Aluminum w/Cast

 

Iron Sleeve

Iron Sleeve

Iron Sleeve

Valve Arrangement

Overhead Valves

Overhead Valves

Overhead Valves

Ignition System

Solid-state w/Magneto

Solid-state w/Magneto

Solid-state w/Magneto

Recommended Spark Plug

RC14YC

RC12YC

RC12YC

Spark Plug Gap

0.76 mm (0.030 inch)

0.508 mm (0.020 inch)

0.508 mm (0.020 inch)

Compression Ratio

8.6:1

9.5:1

9.5:1

Starter

12 Vdc

12 Vdc

12Vdc

Oil Capacity Including Filter

Approx. 1.5 Qts

Approx. 1.7 Qts

Approx. 1.7 Qts

Recommended Oil Filter

Generac Part # 70185

Generac Part # 70185

Generac Part # 70185

Recommended Air Filter

Generac Part # 0C8127

Generac Part # 0C8127

Generac Part # 0C8127

Operating RPM

3,600

3,600

3,600

6 Generac® Power Systems, Inc.

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Contents Models 04758-2 6 kW NG, 7 kW LP 04759-2 12 kW NG, 12 kW LP 04760-2 13 kW NG, 15 kW LPThis manual should remain with the unit Installation and Owner’s Manual‹ CONTENTS ‹ OPERATION AND MAINTENANCE‹ HOW TO OBTAIN SERVICE INTRODUCTIONIntroduction GENERAL HAZARDS Despite the safe design of this generatorParts of the generator are rotating and/or hot during operation. Exercise care near running generatorsELECTRICAL HAZARDS FIRE HAZARDSEXPLOSION HAZARDS ‹ STANDARDS INDEX1.1 UNPACKING/INSPECTION 1.2 PROTECTION SYSTEMS1.3 SYSTEM SET LED DANGERFigure 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 1.8 RECONFIGURING THE FUEL SYSTEM 1.6 FUEL REQUIREMENTS AND RECOMMENDATIONS1.7 FUEL CONSUMPTION DANGER1.9 LOCATION 1.8.2 12KW AND 15KW, 990CC ENGINES1.9.1 GENERATOR Figure 1.4 - Demand Regulator1.10 BATTERY INSTALLATION 1.11 THE BATTERY1.9.2 TRANSFER SWITCH 1.9.2.1 7 kW, 12 kW and 15 kW Units Figure 1.5 - Battery Cable Connections2.3 ELECTRICAL CHECKS 2.2 CHECK TRANSFER SWITCH OPERATION2.1 BEFORE INITIAL START-UP 2.4 GENERATOR TESTS UNDER LOAD 2.5 CHECKING AUTOMATIC OPERATIONFigure 2.1 - Dual Fuel Regulators 2.6 ADJUSTING THE REGULATOR NATURAL GAS ONLYFigure 2.2 - Placement of Regulator 2.7 ENGINE GOVERNOR ADJUSTMENT Figure 2.4 - V-twin Engine Governor AdjustmentFigure 2.3 - Single Cylinder Engine Governor Adjustment Figure 2.5 - V-twin Full Load Speed Adjust Screw2.8 VOLTAGE REGULATOR ADJUSTMENT 3.1 BREAK-IN PROCEDURE3.2 USING THE AUTO/OFF/MANUAL SWITCH FIGURE Figure 2.6 - Voltage Adjustment Potentiometer3.3 AUTOMATIC TRANSFER OPERATION 3.5 MANUAL TRANSFER OPERATION3.4 SEQUENCE OF AUTOMATIC OPERATION ‹ 3.5.1 TRANSFER TO GENERATOR POWER SOURCE‹ 3.5.2 TRANSFER BACK TO UTILITY POWER SOURCE ‹ 3.7.1 LOW OIL PRESSURE SWITCH‹ 3.7.2 HIGH TEMPERATURE SWITCH Figure 3.2 - Manual Transfer Switch OperationFigure 3.3 - Low Oil Pressure and High Temperature Switches 4.2 CHECKING THE ENGINE OIL LEVEL4.1 FUSE ‹ 3.7.3 OVERCRANK4.5 CHANGING THE ENGINE AIR CLEANER ‹ 4.3.2 OIL CHANGE PROCEDURE4.3 CHANGING THE ENGINE OIL 4.4 CHANGING THE OIL FILTER4.7 BATTERY MAINTENANCE Figure 4.6 - 7 kW, Engine Air Cleaner LocationFigure 4.7 - 12 kW and 15 kW Engine Air Cleaner Figure 4.8 - Setting the Spark Plug Gap4.9 COOLING SYSTEM 4.8 ADJUSTING VALVE CLEARANCEFigure 4.10 - Valve Clearance Adjustment 4.12 OUT OF SERVICE PROCEDURE ‹ 4.12.2 RETURN TO SERVICE‹ 4.12.1 REMOVAL FROM SERVICE 4.10 ATTENTION AFTER SUBMERSION4.13 SERVICE SCHEDULE 5.1 TROUBLESHOOTING GUIDE PROBLEMCAUSE CORRECTIONSection 6 - Electrical Data 24 Generac Power Systems, IncENGINE WIRING CONNECTION CONTROL PANEL BOXCUSTOMER Electrical Schematic - 12 & 15 kW - Drawing No. 0D8501-B 26 Generac Power Systems, IncGenerac Power Systems, Inc 28 Generac Power Systems, Inc Section 6 - Electrical DataGenerac Power Systems, Inc 224A 30 Generac Power Systems, Inc225A Electrical Schematic - 7 kW - Drawing No. 0D9014-C Section 7 - Exploded Views and Parts Lists 32 Generac Power Systems, IncPART NO. QTY. DESCRIPTION 34 Generac Power Systems, Inc PART NO. QTY. DESCRIPTION 35, 36, 40 36 Generac Power Systems, Inc27, 28 PART NO. QTY DESCRIPTION38 Generac Power Systems, Inc DESCRIPTION 40 Generac Power Systems, Inc 14 201.8 FT 1.25 FT42 Generac Power Systems, Inc 1.33 FT 2.6 FT3 FT 44 Generac Power Systems, Inc Section 7 - Exploded Views and Parts Lists 46 Generac Power Systems, Inc Section 7 - Exploded Views and Parts Lists 48 Generac Power Systems, Inc Section 7 - Exploded Views and Parts Lists 50 Generac Power Systems, Inc ALL DIMENSIONS IN MILLIMETERS INCHESSection 8 - Mounting Guardian Air-cooled 7 kW, 12 Drawing No. 0D3739-BSection 9 - Notes YOUR WARRANTY RIGHTS AND OBLIGATIONS MANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGEPURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES CALIFORNIA AND FEDERAL EMISSION CONTROL WARRANTY STATEMENTEMISSION CONTROL SYSTEM WARRANTY EMISSION RELATED PARTS INCLUDE THE FOLLOWINGGENERAC POWER SYSTEMS TWO YEAR LIMITED WARRANTY FOR GUARDIAN PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORSWARRANTY SCHEDULE THIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING
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