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

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Kohler 8.5RES, 12RES manual Circuit Protection, Storage Procedure
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12RES, 8.5RES specifications

The Kohler 8.5RES and 12RES generators are known for their robust reliability and efficiency, making them ideal solutions for both residential and light commercial applications. These generators are equipped with advanced technologies that ensure seamless power delivery during outages, giving users peace of mind.

The Kohler 8.5RES, with its 8.5 kW output, is perfect for homeowners who require backup power for essential appliances and systems. It efficiently powers refrigerators, lights, and heating or cooling systems, providing convenience when the grid is down. The 12RES, delivering 12 kW, caters to larger homes or small businesses, accommodating additional loads such as sump pumps and electric dryers.

One of the standout features of these generators is the Kohler Command PRO engine, designed for maximum performance and longevity. This engine operates with low noise levels, ensuring that any power interruption goes unnoticed. Both models come with an innovative digital control panel that simplifies operation and monitoring, allowing users to access critical information at a glance.

The Kohler 8.5RES and 12RES are equipped with the patented Automatic Voltage Regulation (AVR) technology. This feature maintains a steady voltage output to protect sensitive electronics from damage caused by power surges. The modular design of these units facilitates easy maintenance, with service intervals and replacement parts readily available.

For eco-conscious consumers, the Kohler generators meet EPA emission regulations, ensuring a cleaner energy solution. The units also offer a comprehensive sound-attenuated enclosure, resulting in quieter operation, making them suitable for use in suburban environments.

Installation is straightforward, with various connection options for natural gas and propane fueling. Both models come with a fully automatic transfer switch, providing seamless transition from grid to generator power. This ensures that critical systems are always operational during outages.

In summary, the Kohler 8.5RES and 12RES generators stand out for their reliability, advanced technology, and user-friendly features. Their powerful engines, efficient performance, and low emissions make them an excellent choice for anyone looking to invest in a dependable backup power solution. Whether for home use or light commercial needs, these generators provide the essential peace of mind that comes with knowing you have power when you need it most.
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