Generac Power Systems 04389-3, 04456-3, 04390-3 Corrosion Protection, OUT of Service Procedure

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Section 4 — Maintenance

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

The exhaust from this product gets extremely hot and remains hot after shutdown. High grass, weeds, brush, leaves, etc. must remain clear of the exhaust. Such materials may ignite and burn from the heat of the exhaust system.

The maximum ambient temperature for the gen- erator is 40° C (104° F).

4.10 ATTENTION AFTER SUBMERSION

If the generator has been submerged in water, it must not be started and operated. Following any submer- sion in water, have an Authorized Dealer thoroughly clean and dry the generator.

4.11 CORROSION PROTECTION

Periodically wash and wax the enclosure using auto- motive type products. Frequent washing is recom- mended in salt water/coastal areas. Spray engine linkages with a light oil such as WD-40.

4.12 OUT OF SERVICE PROCEDURE

‹4.12.1 REMOVAL FROM SERVICE

If the generator cannot be exercised every seven days, and will be out of service longer than 90 days, pre- pare the generator for storage as follows:

1.Start the engine and let it warm up.

2.Close the fuel shutoff valve in the fuel supply line and allow the unit to shut down.

3.Once the unit has shut down, it will signal a low oil fault.

4.Set the generator’s main circuit breaker to its OFF (or open) position.

5.Set the AUTO/OFF/MANUAL switch to OFF and turn off the utility power to the transfer switch. Remove the 7.5A and 15A fuses from the genera- tor control panel. Disconnect the battery cables as outlined in “General Hazards” (page 2).

6.While the engine is still warm from running, drain the oil completely. Refill the crankcase with oil. See ”Engine Oil Recommendations,” Section 4.3.1.

7.Attach a tag to the engine indicating the viscosity and classification of the oil in the crankcase.

8.Remove the spark plug(s) and spray fogging agent into the spark plug(s) threaded openings. Reinstall and tighten the spark plug(s).

9.Remove the battery and store it in a cool, dry room on a wooden board. Never store the battery on any concrete or earthen floor.

10.Clean and wipe the entire generator.

‹4.12.2 RETURN TO SERVICE

To return the unit to service after storage, proceed as follows:

1.Verify that utility power is turned off and that the AUTO/OFF/MANUAL switch is set to OFF.

2.Check the tag on the engine for oil viscosity and classification. Verify that the correct recommend- ed oil is used in the engine (see Section 4.3.1). If necessary, drain and refill with the proper oil.

3.Check the state of the battery. Fill all cells of unsealed batteries to the proper level with dis- tilled water. DO NOT USE TAP WATER IN THE BATTERY. Recharge the battery to 100 percent state of charge, or, if defective, replace the battery. See “Specifications,” Section 1.5, for type and size.

4.Clean and wipe the entire generator.

5.Remove the 7.5A and 15A fuses from the genera- tor control panel. Reconnect the battery. Observe battery polarity. Damage may occur if the battery is connected incorrectly.

6.Open the fuel shutoff valve.

7.Insert the 7.5A and 15A fuses into the generator control panel. Start the unit by moving the AUTO/ OFF/MANUAL switch to MANUAL. Allow the unit to warm up thoroughly.

8.Stop the unit by setting the AUTO/OFF/MANUAL switch to OFF.

9.Turn on the utility power to the transfer switch.

10.Set the AUTO/OFF/MANUAL switch to AUTO.

11.The generator is now ready for service.

NOTE:

If the battery was dead or disconnected, the exer- cise timer must be reset.

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Contents US Listed Introduction Authorized Dealer LocationPost Installation Start-up Adjustments MaintenanceTroubleshooting Introduction Inside Front Cover Warning   Electrical Hazards  ‹ Standards IndexUNPACKING/INSPECTION Protection SystemsBreaker for Bedrooms Generator GfciSpecifications ‹ 1.5.1 Generator‹ 1.5.2 Engine Reconfiguring the Fuel System System SET LEDFuel Requirements Recommendations Fuel ConsumptionLocation ‹ 1.9.2 12KW and 15KW, V-TWIN Engines‹ 1.10.1 Generator Battery Installation Battery‹ 1.10.2 Transfer Switch 10.2.1 7 kW, 12 kW and 15 kW UnitsCheck Transfer Switch Operation Before Initial START-UPElectrical Checks Generator Tests Under Load Checking Automatic OperationAdjusting the Regulator Natural GAS only Adjustment ScrewEngine Governor Adjustment ‹ 2.7.2 12 KW and 15 KW Units‹ 2.7.1 7 KW Units Voltage Regulator Adjustment BREAK-IN Procedure‹ 3.2.1 Auto Position ‹ 3.3.1 12 VDC Accessory Outlet Automatic Transfer OperationSequence of Automatic Operation ‹ 3.2.2 OFF Position‹ 3.5.2 Transfer Back to Utility Power Source Manual Transfer OperationSetting the Exercise Timer ‹ 3.7.2 High Temperature Switch‹ 3.7.1 LOW OIL Pressure Switch ‹ 3.7.3 OvercrankFuses Checking the Engine OIL Level‹ 3.7.4 Overspeed ‹ 4.3.2 OIL Change Procedure Changing the Engine OILChanging the OIL Filter ‹ 4.3.1 Engine OIL RecommendationsBattery Maintenance Spark PlugsValve Clearance Cooling SystemOUT of Service Procedure ‹ 4.12.1 Removal from Service‹ 4.12.2 Return to Service Corrosion ProtectionService Schedule Be performed by the nearest Authorized DealerTroubleshooting Guide Problem Cause CorrectionAir-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 Your Warranty Rights and Obligations MANUFACTURER’S Emission Control System Warranty CoveragePURCHASER’S/OWNER’S Warranty Responsibilities Emission Control System Warranty Emission Related Parts Include the FollowingWarranty 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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