TP-6811 7/1660 Section 5 Troubleshooting
keypad, or use a personal computer and Kohlerr
SiteTecht software.
5.4 Circuit Protection
If the generator set circuit breaker trips or the fuses blow
repeatedly, contact an authorized Kohler distributor/
dealer for service.
5.4.1 Line Circuit Breaker
The line circuit breaker interrupts the generator output in
the event of an overload condition or a fault in the wiring
between the generator and the load. If the circuit
breaker trips, reduce the load and check the wiring.
5.4.2 Fuses
Always identify and correct the cause of a blown fuse
before restarting the generator set. Refer to Figure 5-5,
Tr oubleshooting Chart, for conditions that may indicate
a blown fuse. Obtain replacement parts and service
from an authorized Kohler distributor/dealer.
Fan Fuses. Three 30 amp fan fuses are located in the
fan fuse and relay box. See Section 1.7, Service Views,
for location.
Engine Fuses. Engine fuses are located in the engine
fuse box. See the service views in Section 1.7 for the
fuse box location.
D Fuse F1, 5 amps
D Fuse F2, ECM 10 amps
D Fuse M3, battery charging alternator, 70 amps
D Fuse F4, ignition,15 amps.
D Fuse F6, starter, 20 amps.
5.4.3 Controller Internal Circuit
Protection
The controller is equipped with internal circuit protection
for accessory and main power overload conditions.
Press OFF to reset.
5.5 Fuel System Troubleshooting
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
WARNING
The fuel system. Explosive fuel vapors can cause severe
injury or death. Vaporized fuels are highly explosive. Use
extreme care when handling and storing fuels. Store fuels in a
well-ventilated area away from spark-producing equipment
and out of the reach of children. Never add fuel to the tank
while the engine is running because spilled fuel may ignite on
contact with hot parts or from sparks. Do not smoke or permit
flames or sparks to occur near sources of spilled fuel or fuel
vapors. Keep the fuel lines and connections tight and in good
condition. Do not replace flexible fuel lines with rigid lines. Use
flexible sections to avoid fuel line breakage caused by
vibration. Do not operate the generator set in the presence of
fuel leaks, fuel accumulation, or sparks. Repair fuel systems
before resuming generator set operation.
Gas fuel leaks. Explosive fuel vapors can cause severe
injury or death. Fuel leakage can cause an explosion. Check
the LPG vapor or natural gas fuel system for leakage by using
a soap and water solution with the fuel system test pressurized
to 6--8 ounces per square inch (10--14 inches water column).
Do not use a soap solution containing either ammonia or
chlorine because both prevent bubble formation. A successful
test depends on the ability of the solution to bubble.
Most problems with gas fuels involve either fuel
pressure or fuel regulator function. Basic
troubleshooting consists of verifying fuel pressures and
checking each fuel system component.
Check the following items:
D Check primary fuel regulator outlet pressure. This is
the line pressure.
D Check primary fuel regulator vent for obstructions.
D Check fuel shutoff inlet pressure.
D Check secondary fuel regulator inlet pressure.
D Check fuel inlet pressure at the gas mixer.
D Verify that fuel supply lines and meters are sized to
support all gas appliances.
D Perform fuel system maintenance if necessary. See
Section 2.8, Fuel System Maintenance.
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