Kohler 8.5RES Circuit Protection, Storage Procedure, Line Circuit Breaker, Fuses, Fuel System

3.10 Circuit Protection

If the generator set circuit breaker trips or the fuses blow repeatedly, see Section 4, Troubleshooting, for possible causes.

3.10.1 Line Circuit Breaker

A line circuit breaker interrupts the generator output in the event of a fault in the wiring between the generator and the load. The line circuit breaker location is shown in Figure 1-1. See Figure 3-8 for the circuit breaker ratings. If the circuit breaker trips, reduce the load and switch the breaker back to the ON position. With the breaker in the OFF position the generator set runs but the generator output is disconnected from the load.

	Circuit Breaker
Model	Rating, Amps
8.5RES	40
12RES	50

Figure 3-8 Line Circuit Breakers

3.10.2 Fuses

The engine harness contains two 10-amp and one 20-amp inline fuses. See Figure 3-9. Another 10-amp fuse protects the battery charger.

Always identify and correct the cause of a blown fuse before restarting the generator set. Refer to Section 4, Troubleshooting, for conditions that may indicate a blown fuse. Replace blown fuses with identical replacement parts.

		Part
Fuse	Label	Number	Location
Auxiliary winding	F1	292937	Lead 55
Relay interface	F2	223316	Lead PF2
board
Controller	F3	223316	Lead PF1
Battery charger	—	AGS 10	Battery charger DC
			lead. See Section 2.6.

Figure 3-9 Fuses

3.11 Storage Procedure

Perform the following storage procedure before removing the generator set from service for three months or longer. Follow the engine manufacturer’s recommendations for storage, if available.

Note: Run the generator set monthly whenever possible.

3.11.1 Lubricating System

1.Operate the generator set until it reaches operating temperature, or about 15 minutes.

2.Stop the generator set.

3.While the engine is still warm, drain the engine lubrication oil from the engine crankcase.

4.Refill the engine crankcase with oil. See Section 3.3.3 for oil recommendations.

5.Run the generator set for a few minutes to distribute the clean oil.

6.Stop the generator set.

3.11.2 Fuel System

1.Start the generator set.

2.With the generator set running, shut off the gas supply.

3.Run the generator set until the engine stops.

4.Place the generator set master switch in the OFF/RESET position.

16 Section 3 Scheduled Maintenance TP-6331 5/04