Generac Power Systems 04389-3, 04456-3, 04390-3  Electrical Hazards , ‹ Standards Index

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IMPORTANT SAFETY INSTRUCTIONS

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

ELECTRICAL HAZARDS

•All generators covered by this manual produce dangerous electrical voltages and can cause fatal electrical shock. Utility power delivers extremely high and dangerous voltages to the transfer switch as does the standby generator when it is in opera- tion. Avoid contact with bare wires, terminals, connections, etc., while the unit is running. Ensure all appropriate covers, guards and barriers are in place before operating the generator. If work must be done around an operating unit, stand on an insulated, dry surface to reduce shock hazard.

•Do not handle any kind of electrical device while standing in water, while barefoot, or while hands or feet are wet. DANGEROUS ELECTRICAL SHOCK MAY RESULT.

•The National Electrical Code (NEC) requires the frame and external electrically conductive parts of the generator to be connected to an approved earth ground. Local electrical codes also may require proper grounding of the generator electrical system.

•After installing this home standby electrical sys- tem, the generator may crank and start at any time without warning. When this occurs, load cir- cuits are transferred to the STANDBY (generator) power source. To prevent possible injury if such a start and transfer occur, always set the generator’s Auto/Off/Manual switch to its OFF position before working on equipment and remove the 7.5A and 15A fuses from the generator control panel.

•In case of accident caused by electric shock, imme- diately shut down the source of electrical power. If this is not possible, attempt to free the victim from the live conductor. AVOID DIRECT CONTACT WITH THE VICTIM. Use a nonconducting implement, such as a dry rope or board, to free the victim from the live conductor. If the victim is unconscious, apply first aid and get immediate medical help.

•Never wear jewelry when working on this equip- ment. Jewelry can conduct electricity resulting in electric shock, or may get caught in moving com- ponents causing injury.

FIRE HAZARDS

•For fire safety, the generator must be installed and maintained properly. Installation always must comply with applicable codes, standards, laws and regulations. Adhere strictly to local, state and national electrical and building codes. Comply with regulations the Occupational Safety and Health Administration (OSHA) has established. Also, ensure that the generator is installed in accordance with the manufacturer’s instructions and recommendations. Following proper installa- tion, do nothing that might alter a safe installation and render the unit in noncompliance with the aforementioned codes, standards, laws and regula- tions.

•Keep a fire extinguisher near the generator at all times. Extinguishers rated “ABC” by the National Fire Protection Association are appropriate for use on the standby electric system. Keep the extin- guisher properly charged and be familiar with its use. Consult the local fire department with any questions pertaining to fire extinguishers.

EXPLOSION HAZARDS

•Do not smoke around the generator. Wipe up any fuel or oil spills immediately. Ensure that no com- bustible materials are left in the generator com- partment, or on or near the generator, as FIRE or EXPLOSION may result. Keep the area surround- ing the generator clean and free from debris.

•Gaseous fluids such as natural gas and liquid pro- pane (LP) gas are extremely EXPLOSIVE. Install the fuel supply system according to applicable fuel-gas codes. Before placing the home standby electric system into service, fuel system lines must be properly purged and leak tested according to applicable code. After installation, inspect the fuel system periodically for leaks. No leakage is permit- ted.

‹STANDARDS INDEX

In the absence of pertinent standards, codes, regu- lations and laws, the published information listed below may be used as installation guide for this equipment.

1.NFPA No. 37, STATIONARY COMBUSTION ENGINES AND GAS TURBINES, available from the National Fire Protection Association, 470 Atlantic Avenue, Boston, MA 02210.

2.NFPA No. 76A, ESSENTIAL ELECTRICAL SYSTEMS FOR HEALTH CARE FACILITIES, available same as Item 1.

3.NFPA No. 54, NATIONAL FUEL GAS CODE, available same as Item 1.

4.NFPA No. 58, AMERICAN NATIONAL STANDARD FOR STORAGE AND HANDLING OF LIQUEFIED PETROLEUM GAS, available same as Item 1.

5.NFPA No. 70, NFPA HANDBOOK OF NATIONAL ELECTRIC CODE, available same as Item 1.

6.Article X, NATIONAL BUILDING CODE, available from the American Insurance Association, 85 John Street, New York, N.Y. 10038.

7.AGRICULTURAL WIRING HANDBOOK, avail- able from the Food and Energy Council, 909 University Avenue, Columbia, MO 65201.

8.ASAE EP-3634, INSTALLATION AND MAINTENANCEOFFARMSTANDBYELECTRICAL SYSTEMS, available from the American Society of Agricultural Engineers, 2950 Niles Road, St. Joseph, MI 49085.

9.NFPA No. 30, FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE, available same as Item 1.

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Contents US Listed Authorized Dealer Location IntroductionMaintenance Post Installation Start-up AdjustmentsTroubleshooting Introduction Inside Front Cover Warning  ‹ Standards Index  Electrical Hazards Breaker for Bedrooms UNPACKING/INSPECTIONProtection Systems Gfci Generator‹ 1.5.2 Engine Specifications‹ 1.5.1 Generator System SET LED Reconfiguring the Fuel SystemFuel Requirements Recommendations Fuel Consumption‹ 1.10.1 Generator Location‹ 1.9.2 12KW and 15KW, V-TWIN Engines Battery Battery Installation‹ 1.10.2 Transfer Switch 10.2.1 7 kW, 12 kW and 15 kW UnitsElectrical Checks Check Transfer Switch OperationBefore Initial START-UP Checking Automatic Operation Generator Tests Under LoadAdjustment Screw Adjusting the Regulator Natural GAS only‹ 2.7.1 7 KW Units Engine Governor Adjustment‹ 2.7.2 12 KW and 15 KW Units ‹ 3.2.1 Auto Position Voltage Regulator AdjustmentBREAK-IN Procedure Automatic Transfer Operation ‹ 3.3.1 12 VDC Accessory OutletSequence of Automatic Operation ‹ 3.2.2 OFF PositionManual Transfer Operation ‹ 3.5.2 Transfer Back to Utility Power Source‹ 3.7.2 High Temperature Switch Setting the Exercise Timer‹ 3.7.1 LOW OIL Pressure Switch ‹ 3.7.3 Overcrank‹ 3.7.4 Overspeed FusesChecking the Engine OIL Level Changing the Engine OIL ‹ 4.3.2 OIL Change ProcedureChanging the OIL Filter ‹ 4.3.1 Engine OIL RecommendationsSpark Plugs Battery MaintenanceCooling System Valve Clearance‹ 4.12.1 Removal from Service OUT of Service Procedure‹ 4.12.2 Return to Service Corrosion ProtectionBe performed by the nearest Authorized Dealer Service ScheduleProblem Cause Correction Troubleshooting GuideAir-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Air-cooled 7 kW, 12 kW and 15 kW Generators Electrical Data Customer Connection Battery 1VA Engine Wiring Control Panel BOX Electronic Voltage Regulator Utility Electrical Data Electrical Data Electrical Data Electrical Data ATS N1A N2A Exploded Views and Parts Lists Part NO. QTY. Description Exploded Views and Parts Lists Part NO. QTY Description Exploded Views and Parts Lists QTY Description Exploded Views and Parts Lists COVER, 12 Circuit GTS Load Center 1310 Sleeve 124 125 139 136 135 123 120 137 143 133 134 132 KNOB, AIR Cleaner Exploded Views and Parts Lists QTY 32 31 Stator 12KW Exploded Views and Parts Lists PIN, Piston D20 Exploded Views and Parts Lists SCREW, Taptite M6-1.0X8 Yellow Chrome 7KW Mounting Dimensions PURCHASER’S/OWNER’S Warranty Responsibilities Your Warranty Rights and ObligationsMANUFACTURER’S Emission Control System Warranty Coverage Emission Related Parts Include the Following Emission Control System WarrantyWarranty Schedule

04389-3, 04456-3, 04390-3 specifications

Generac Power Systems has established itself as a leading name in power generation equipment, and models 04389-3, 04456-3, and 04390-3 exemplify the company’s commitment to reliability and technology. These models are particularly popular among homeowners and businesses that need dependable backup power solutions.

The Generac 04389-3 is a 22 kW standby generator designed to provide seamless power during outages. It boasts a powerful 999cc engine that can handle heavy loads, making it suitable for larger homes or commercial settings. The generator features Generac’s patented True Power Technology, which ensures clean and stable power delivery, making it safe for sensitive electronics. It also comes equipped with an innovative shutdown system that prevents damage during low oil conditions and features a five-year limited warranty for added peace of mind.

Similarly, the 04456-3 model also serves as a robust standby generator, offering 24 kW of power output. This model highlights an advanced alternator that provides a reliable source of energy for running essential appliances like refrigerators, air conditioners, and heating systems. The 04456-3 includes an automatic exercise mode, allowing it to run tests periodically to ensure it’s always ready to operate when needed. Additionally, it utilizes a user-friendly digital controller that simplifies monitoring and operational management.

The Generac 04390-3 model offers a slightly lower output at 20 kW but retains high efficiency and reliability. Like its counterparts, it features an innovative design that operates quietly while delivering consistent power. This model is particularly aimed at residential users who require dependable backup solutions without the noise commonly associated with generators. It incorporates Generac’s Smart Management modules, enabling users to manage power loads effectively and avoid overloading the system.

All three models benefit from Generac’s Mobile Link technology, which enables remote monitoring via mobile devices. This feature allows users to check the status of their generators, including maintenance alerts and operational history, providing a convenient way to manage energy needs. In summary, Generac models 04389-3, 04456-3, and 04390-3 offer cutting-edge features, dependable technology, and robust capabilities, making them an ideal choice for anyone seeking reliable backup power solutions.
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