Generac Power Systems 04758-1, 04759-1, 04760-1 Setting the Exercise Timer, ‹ 3.7.3 Overcrank

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Section 3 — Operation

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

3.6SETTING THE EXERCISE TIMER

The generator is equipped with an exercise timer. Once it is set, the generator will start and exercise once every seven days, on the day of the week and at the time of day the following sequence is completed. During this exercise period, the unit runs for approx- imately 12 minutes and then shuts down. Transfer of loads to the generator output does not occur during the exercise cycle.

A switch on the control panel (see Figure 3.1) permits selection of the day and time for system exercise. To select the desired day and time of day, the following sequence must be performed at that time.

1.Verify that the AUTO/OFF/MANUAL switch is set to AUTO.

2.Hold down the set timer switch until the genera- tor starts (approximately 10 seconds) and then release.

3.The generator will start and run for approximately 12 minutes and then shut down on its own. The exerciser will then be set to run at that time of day every week.

NOTE:

The exerciser will only work in the AUTO mode and will not work unless this procedure is per- formed. The exerciser will need to be reset every time the 12-volt battery is disconnected and then reconnected. The exerciser WILL NOT work if dip switch 2 (Remote Not Auto) on the controller printed circuit board is ON.

3.7PROTECTION SYSTEMS

‹3.7.1 LOW OIL PRESSURE SWITCH

This switch (Figure 3.3) has normally closed contacts that are held open by engine oil pressure during crank- ing and operating. Should oil pressure drop below the 8 psi range, switch contacts close, and the engine shuts down. The unit should not be restarted until oil is added, and the AUTO/OFF/MANUAL switch must be turned to OFF and then back to AUTO.

‹3.7.2 HIGH TEMPERATURE SWITCH

This switch’s contacts (Figure 3.3) close if the tem- perature should exceed approximately 140º C (284º F), initiating an engine shutdown. The generator will automatically restart and the LED will reset once the temperature has returned to a safe operating level.

Figure 3.3 – Low Oil Pressure and

High Temperature Switches

Low Oil Switch

 

High Temp Switch

 

 

 

 

 

 

Loosen

Oil

Drain

Hose

Oil Filter

‹3.7.3 OVERCRANK

This feature prevents the generator from damaging itself when it continually attempts to start and anoth- er problem, such as no fuel supply, prevents it from starting. The unit will crank and rest for a preset time limit. Then, it will stop cranking, and the LED will light indicating an overcrank failure. The AUTO/OFF/MANUAL switch will need to be set to OFF and then back to AUTO to reset the generator control board.

NOTE:

If the fault is not repaired, the overcrank feature will continue to activate.

3.7.3.1 Approximate Crank Cycle Times

15 seconds ON

7 seconds OFF

7 seconds ON

7 seconds OFF

Repeat for 45 seconds Approximately 90 seconds total

‹3.7.4 OVERSPEED

This feature protects the generator from damage by shutting it down if it happens to run faster than the preset limit. This protection also prevents the gener- ator from supplying an output that could potentially damage appliances connected to the generator cir- cuit. Contact the nearest Generac Authorized Dealer if this failure occurs.

16 Generac® Power Systems, Inc.

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Contents Installation Introduction Troubleshooting Post Installation Start-up AdjustmentsMaintenance Introduction Inside Front CoverGeneral Hazards Electrical Hazards ‹ Standards IndexUNPACKING/INSPECTION Protection SystemsSystem SET LED Generator 7 kW, Single Cylinder GH-410 EngineSpecifications ‹ 1.5.1 Generator‹ 1.5.2 Engine Fuel Consumption Reconfiguring the Fuel SystemFuel Requirements Recommendations 1 7 KW, 410CCGenerator Transfer SwitchLocation 2.1 7 kW, 12 kW and 15 kW UnitsBattery Installation BatteryCheck Transfer Switch Operation Before Initial START-UPElectrical Checks Generator Tests Under Load Checking Automatic OperationAdjusting the Regulator Natural GAS only Engine Governor Adjustment1 7 KW Units Voltage Regulator Adjustment BREAK-IN Procedure2 12 KW and 15 KW Units ‹ 3.2.1 Auto Position Automatic Transfer OperationSequence of Automatic Operation ‹ 3.2.2 OFF Position‹ 3.5.2 Transfer Back to Utility Power Source Manual Transfer Operation‹ 3.7.2 High Temperature Switch Setting the Exercise Timer‹ 3.7.1 LOW OIL Pressure Switch ‹ 3.7.3 OvercrankChecking the Engine OIL Level Changing the Engine OIL‹ 4.3.1 Engine OIL Recommendations ‹ 4.3.2 OIL Change Procedure Changing the OIL Filter‹ 4.5.1 7 KW, 12 KW and 15 KW Generators Battery Maintenance Spark PlugsAdjusting Valve Clearance Cooling System‹ 4.12.1 Removal from Service OUT of Service Procedure‹ 4.12.2 Return to Service Corrosion ProtectionService Schedule SYSTEM/COMPONENT Procedure FrequencyTroubleshooting Guide Problem Cause CorrectionElectrical Data Customer Battery SCR Electrical Data Connection BCR SW1 Exploded Views and Parts Lists Part NO.QTY. Description Exploded Views and Parts Lists Part NO. QTY. Description 140 Part NO. QTY Description Exploded Views and Parts Lists QTY Description 14 20 ADAPTOR, Engine Exploded Views and Parts Lists Stator 12KW Exploded Views and Parts Lists PIN, Piston D20 Exploded Views and Parts Lists SCREW, Taptite M6-1.0X8 Yellow Chrome For GT 760 Engine only CASTING, Twin Regulator Housing Mounting Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators California and Federal Emission Control Warranty Statement Emission Control System Warranty Warranty Schedule

04758-1, 04759-1, 04760-1 specifications

Generac Power Systems is a leading manufacturer of power generation equipment, particularly known for its innovative solutions in backup and portable power. Among its impressive product lineup, the Generac models 04758-1, 04759-1, and 04760-1 stand out for their reliability and advanced features, making them ideal choices for residential and commercial applications.

The Generac 04758-1 is a robust standby generator that delivers a powerful output of 22kW. It is designed to automatically kick in during power outages, ensuring that homes remain powered without the need for manual intervention. One of its main features is the innovative Mobile Link app, which allows users to monitor their generator's status remotely through their smartphones. This model also incorporates Generac's G-Force engine, which is designed with durability in mind, providing longer run times and enhanced performance.

The 04759-1 model builds on its predecessor's strengths by enhancing its power capabilities. With a 24kW output, it efficiently supplies power to larger homes or small businesses that require reliability during outages. Its True Power Technology ensures clean power output, making it suitable for sensitive electronics. The 04759-1 also boasts advanced diagnostic features, allowing for self-testing and maintenance alerts, which contribute to its user-friendly design.

Moving up in the lineup, the Generac 04760-1 generator further amplifies power output, reaching an impressive 26kW. This model is tailored for those who demand the utmost in power reliability, featuring an aluminized steel enclosure that enhances durability and rust resistance. The 04760-1 is equipped with Wi-Fi connectivity, enabling real-time updates and notifications directly to users’ mobile devices. Its superior sound attenuated design operates quietly, ensuring minimal disruption during operation.

All three models are equipped with the Quiet-Test technology, which allows for a low-decibel exercise cycle that reduces noise levels without sacrificing performance. Additionally, Generac back them with a comprehensive warranty and customer support, assuring consumers of their long-term reliability and effectiveness. With advanced features, superior performance, and innovative technology, the Generac 04758-1, 04759-1, and 04760-1 models offer dependable solutions for power generation needs, catering to a diverse range of applications while ensuring peace of mind during power interruptions.