Manuals / Generac Power Systems / Lawn and Garden / Portable Generator

Generac Power Systems 04389-3, 04456-3, 04390-3 Specifications, ‹ 1.5.1 GENERATOR, ‹ 1.5.2 ENGINE

Models: 04389-3, 04456-3, 04390-3

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1.5SPECIFICATIONS

Section 1 — General Information

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

1.5SPECIFICATIONS

1.5.1 GENERATOR

		Model 04389				Model 04456				Model 04390
Rated Max. Continuous Power		6,000 NG/7,000 LP				12,000 NG/12,000 LP		13,000 NG/15,000 LP
	Capacity (Watts*)
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				65 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		Part # 0C8127				Part # 0C8127				Part # 0C8127
Battery Requirement		Group 26/26R				Group 26/26R				Group 26/26R
		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		375 Pounds				470 Pounds				487 Pounds
Output Sound Level @		68 db (A)				70.5 db (A)				71.5 db (A)
	23 ft (7m) at full load
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) ambient temperature.

**Load current values shown for 120 volts are maximum TOTAL values for two separate circuits. The maximum current in each circuit must not exceed the value stated for 240 volts.

1.5.2 ENGINE

	Model 04389	Model 04456	Model 04390
Type of Engine	GH-410	GT-760	GT-990
Number of Cylinders	1	2	2
Rated Horsepower	14.5 @ 3,600 rpm	26 @ 3,600 rpm	30 @ 3,600 rpm
Displacement	410cc	763cc	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	Part # 070185B	Part # 070185B	Part # 070185B
Recommended Air Filter	Part # 0C8127	Part # 0C8127	Part # 0C8127
Operating RPM	3,600	3,600	3,600

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Generac Power Systems 04389-3, 04456-3, 04390-3 Specifications, ‹ 1.5.1 GENERATOR, ‹ 1.5.2 ENGINE, General Information

Contents

Not intended for use as Primary Power in place of utility or in life-support applicationsInstallation and Owner’s Manual DEADLY EXHAUST FUMES. OUTDOOR INSTALLATION ONLY‹ CONTENTS ‹ OPERATION AND MAINTENANCE‹ HOW TO OBTAIN SERVICE INTRODUCTIONSection 2 - Post Installation Start-up and AdjustmentsSection 4 - Maintenance Section 5 - Troubleshooting GENERAL HAZARDS  IMPORTANT SAFETY INSTRUCTIONS WARNING  DANGER ELECTRICAL HAZARDS   FIRE HAZARDS  EXPLOSION HAZARDS  ‹ STANDARDS INDEX‹ 1.3.1 SECTION 210.12 ARC FAULT CIRCUIT INTERRUPTER PROTECTION 1.1 UNPACKING/INSPECTION1.2 PROTECTION SYSTEMS BREAKER FOR BEDROOMS1.4 THE GENERATOR Figure 1.1 - 7 kW, Single Cylinder GH-410 EngineFigure 1.2 - 12 kW and 15 kW, V-twin GT-990/760 Engine Section 1 - General Information1.5 SPECIFICATIONS ‹ 1.5.1 GENERATOR‹ 1.5.2 ENGINE Section 1 - General Information1.9 RECONFIGURING THE FUEL SYSTEM 1.6 SYSTEM SET LED1.7 FUEL REQUIREMENTS AND RECOMMENDATIONS 1.8 FUEL CONSUMPTION1.10 LOCATION ‹ 1.9.2 12KW AND 15KW, V-TWIN ENGINES‹ 1.10.1 GENERATOR Figure 1.4 - Demand Regulator1.11 BATTERY INSTALLATION 1.12 THE BATTERY‹ 1.10.2 TRANSFER SWITCH 1.10.2.1 7 kW, 12 kW and 15 kW Units Figure 1.5 - Battery Cable Connections2.2 CHECK TRANSFER SWITCH OPERATION 2.1 BEFORE INITIAL START-UP2.3 ELECTRICAL CHECKS Section 2 - Post Installation Start-up and Adjustments2.4 GENERATOR TESTS UNDER LOAD 2.5 CHECKING AUTOMATIC OPERATIONSection 2 - Post Installation Start-up and Adjustments DANGER2.6 ADJUSTING THE REGULATOR NATURAL GAS ONLY Figure 2.2 - Placement of RegulatorFigure 2.1 - Dual Fuel Regulators Section 2 - Post Installation Start-up and Adjustments2.7 ENGINE GOVERNOR ADJUSTMENT Figure 2.3 - Engine Governor Adjustment Single Cylinder EnginesFigure 2.4 - Engine Governor Adjustment V-twin Engines Figure 2.5 - Full Load Speed Adjust Screw V-twin Engines2.8 VOLTAGE REGULATOR ADJUSTMENT 3.1 BREAK-IN PROCEDUREFigure 2.6 - Voltage Adjustment Potentiometer ‹ 3.2.1 “AUTO” POSITION‹ 3.3.1 12 VDC ACCESSORY OUTLET 3.3 AUTOMATIC TRANSFER OPERATION3.4 SEQUENCE OF AUTOMATIC OPERATION ‹ 3.2.2 “OFF” POSITION‹ 3.5.2 TRANSFER BACK TO UTILITY POWER SOURCE Figure 3.2 - Manual Transfer Switch Operation‹ 3.5.1 TRANSFER TO GENERATOR POWER SOURCE 3.5 MANUAL TRANSFER OPERATION3.6 SETTING THE EXERCISE TIMER ‹ 3.7.2 HIGH TEMPERATURE SWITCH‹ 3.7.1 LOW OIL PRESSURE SWITCH Figure 3.3 - Low Oil Pressure and High Temperature Switches4.1 FUSES 4.2 CHECKING THE ENGINE OIL LEVELOil Dipstick and Fill ‹ 3.7.4 OVERSPEED4.5 CHANGING THE ENGINE AIR CLEANER ‹ 4.3.2 OIL CHANGE PROCEDUREFigure 4.6 - 7 kW, Engine Air Cleaner Location Air Cleaner4.7 BATTERY MAINTENANCE Figure 4.7 - 12 kW and 15 kW Engine Air CleanerFigure 4.8 - Setting the Spark Plug Gap 4.6 SPARK PLUGS4.8 ADJUSTING GH-410/GT-990/760 VALVE CLEARANCE Figure 4.10 - Valve Clearance Adjustment4.9 COOLING SYSTEM Figure 4.9 - Cooling Vent Locations4.12 OUT OF SERVICE PROCEDURE ‹ 4.12.1 REMOVAL FROM SERVICE‹ 4.12.2 RETURN TO SERVICE 4.10 ATTENTION AFTER SUBMERSION4.13 SERVICE SCHEDULE ATTENTION It is recommended that all service workSection 4 - Maintenance be performed by the nearest Authorized Dealer5.1 TROUBLESHOOTING GUIDE ProblemCause CorrectionSection 6 - Notes Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 6 - Notes Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 6 - Notes Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 7 - Electrical Data Wiring Diagram - V-Twin - Drawing No. 0E9016 Section 7 - Electrical DataAir-cooled 7 kW, 12 kW and 15 kW Generators CUSTOMER CONNECTIONBATTERY Section 7 - Electrical DataSection 7 - Electrical Data Wiring Diagram - Single Cylinder - Drawing No. 0E9014 ENGINE WIRINGLOP - LOW OIL PRESSURE SWITCH SC - STARTER CONTACTOR SW1 - AUTO / OFF / MANUAL SWITCH SW2 - SET EXERCISE SWITCHAir-cooled 7 kW, 12 kW and 15 kW Generators Wiring Diagram - Single Cylinder - Drawing No. 0E9014Section 7 - Electrical Data Air-cooled 7 kW, 12 kW and 15 kW Generators Electrical Schematic - Single Cylinder - Drawing No. 0E9015Section 7 - Electrical Data Section 7 - Electrical Data Air-cooled 7 kW, 12 kW and 15 kW Generators Wiring Diagram - 8 Circuit Load Center - Drawing No. 0E7687ASection 7 - Electrical Data Section 7 - Electrical Data Air-cooled 7 kW, 12 kW and 15 kW Generators Wiring Diagram - 12 Circuit Load Center - Drawing No. 0E7687$Section 7 - Electrical Data Section 7 - Electrical Data Electrical Schematic - 8 Circuit Load Center - Drawing No. 0E7815A TS-TERMINAL STRIP XA,XB-LIMIT SWITCHESATS-AUTOMATIC TRANSFER SWITCH Section 7 - Electrical DataSection 7 - Electrical Data Section 8 - Exploded Views and Parts Lists PRE PACKAGED UNITS ONLYSection 8 - Exploded Views and Parts Lists PART NO. QTY. DESCRIPTIONPART NO. QTY. DESCRIPTION Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 8 - Exploded Views and Parts Lists Section 8 - Exploded Views and Parts Lists PART NO. QTYDESCRIPTION PART NO. QTYAir-cooled 7 kW, 12 kW and 15 kW Generators Section 8 - Exploded Views and Parts Lists7 kW, 8 Circuit Load Center Assembly - Drawing No. 0E7975-B Section 8 - Exploded Views and Parts Lists 7 kW, 8 Circuit Load Center Assembly - Drawing No. 0E7975-BDESCRIPTION Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 8 - Exploded Views and Parts Lists Air-cooled 7 kW, 12 kW and 15 kW GeneratorsAir-cooled 7 kW, 12 kW and 15 kW Generators Section 8 - Exploded Views and Parts ListsDESCRIPTION Views and Parts Lists GT-990/760Air-cooled EngineSection 8 - Exploded Views and Parts Lists PART NO. QTY. DESCRIPTIONPART NO. QTY. DESCRIPTION Air-cooled 7 kW, 12 kW and 15 kW GeneratorsSection 8 - Exploded Views and Parts Lists Section 8 - Exploded Views and Parts Lists PART NO. QTY. DESCRIPTIONPART NO. QTY. DESCRIPTION Air-cooled 7 kW, 12 kW and 15 kW Generators7 kW Generator - Drawing No. 0D3504-E Section 8 - Exploded Views and Parts ListsAir-cooled 7 kW, 12 kW and 15 kW Generators Section 8 - Exploded Views and Parts Lists DESCRIPTIONAir-cooled 7 kW, 12 kW and 15 kW Generators 7 kW Generator - Drawing No. 0D3504-ESection 8 - Exploded Views and Parts Lists 32 31Air-cooled 7 kW, 12 kW and 15 kW Generators 12 kW and 15 kW Generator - Drawing No. 0D3417-LSection 8 - Exploded Views and Parts Lists DESCRIPTIONAir-cooled 7 kW, 12 kW and 15 kW Generators 12 kW and 15 kW Generator - Drawing No. 0D3417-LSection 8 - Exploded Views and Parts Lists Section 8 - Exploded Views and Parts Lists DESCRIPTIONAir-cooled 7 kW, 12 kW and 15 kW Generators GN410 Engine - Drawing No. 0F3981-A PartSection 8 - Exploded Views and Parts Lists Section 8 - Exploded Views and Parts Lists DESCRIPTIONAir-cooled 7 kW, 12 kW and 15 kW Generators GN410 Engine - Drawing No. 0F3981-A PartPART NO. QTY DESCRIPTIONPART NO. QTY DESCRIPTIONSection 9 - Mounting Dimensions ALL DIMENSIONS IN MILLIMETERS INCHESTRANSFER SWITCH IF SUPPLIED Air-cooled 7 kW, 12 kW and 15 kW Generators Drawing No. 0D3739-CYOUR WARRANTY RIGHTS AND OBLIGATIONS MANUFACTURER’S EMISSION CONTROL SYSTEM WARRANTY COVERAGEPURCHASER’S/OWNER’S WARRANTY RESPONSIBILITIES CALIFORNIA EMISSION CONTROL WARRANTY STATEMENTEMISSION CONTROL SYSTEM WARRANTY EMISSION RELATED PARTS INCLUDE THE FOLLOWINGSection 10 - Warranty Air-cooled 7 kW, 12 kW and 15 kW GeneratorsGENERAC POWER SYSTEMS TWO YEAR LIMITED WARRANTY FOR GUARDIAN WARRANTY SCHEDULETHIS WARRANTY SHALL NOT APPLY TO THE FOLLOWING PREPACKAGED EMERGENCY AUTOMATIC STANDBY GENERATORS