Controller (Single Phase); Controller (Three Phase) - Kohler 15CCO Service Manual

Depending on application, the Kohler relay controller
may be located at the set or at a location remote from the
generator. Remote harnesses for the controller are
available in 7.5- and 15-foot (2.3- and 4.6-meter)
lengths. If the generator set has automatically stopped
due to high water temperature (230_F/110_C) or low oil
pressure (6.8 psi/46.9 kPa or less), the cause must be
corrected before the set can be restarted.
Refer to Figure 2-1 and the following descriptions to
identify controller components.
1. Generator Start and Stop/Preheat Switch
serves the dual function of generator operation and
generator preheat. When pressed to the "preheat"
position, the preheat switch aids in cold weather
starting. Refer to "Start/Stop" and "Preheating"
procedures following.
2. Fuel Solenoid Fuse. 10-amp fuse protects fuel
solenoid circuitry.
3. Controller Fuse. 10-amp fuse protects controller
circuitry against damage if a short develops in the
engine wiring system or the wiring to the remote
start/stop switch.
For identification of three-phase controller, see
Figure 2-2.
1 2
Figure 2-2. Three-Phase Controller
2-2 Operation

Controller (Single Phase)

Controller (Three Phase)

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4. Remote Switch Connection (located at rear of
controller). Connect the remote start/stop switch to
operate the generator set at a location remote from
the set. Controller connections are made through
the plug connector at the rear of the unit.
5. Hourmeter. Records total generator set operating
hours for reference in maintenance schedule.
1 2
Figure 2-1. Single-Phase Controller
1. Generator Start and Stop Preheat Switch serves
the dual function of generator operation and
generator preheat. When pressed to the "preheat"
position, the preheat switch aids in cold weather
starting. Refer to "Start/Stop" and "Preheating"
procedures following.
2. DC Circuit Breaker--the generator set will
shutdown automatically after fault. See "Circuit
Protection" following.
3. Hourmeter. Records total generator set operating
hours for reference in maintenance schedule.
4. AC Circuit Breaker (optional) will trip when a fault
is detected in the output circuit. Used to disconnect
generator set during maintenance of vehicle
wiring. To close circuit breaker(s), place in ON
position.
5. Fuel Solenoid Fuse (located inside the controller).
10-amp fuse protects fuel solenoid circuitry.
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TP-5606 6/02