Kohler 3.5EFOZ, Service

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TP-6137 5/03 45 Section 8 Controller Troubleshooting
8.3 Operation Sequence
Use the following controller operation sequence to help
localize and control possible inconveniences. Follow
the wiring diagram sequence shown in Section 10. If a repair is needed, be sure to disconnect the battery.
Consult the safety precautions in the beginning of this
manual.
3.5EFOZ/4EOZ Kohler generator
starting operation.
By the operator. By the separate control.
Push the ON/OFF switch.
The panel control energizes.
Push the START switch.
The relay (K1) is energized.
The starter motor solenoid (S) is
energized.
The electric fuel pump (FP) is
energized.
AC is supplied for the load and
for the static exiting circuit.
AC energizes the relay (K3) that
disconnects the starter.
The relay (K1) is deenergized.
Release the START switch. The
generator set is operating
because the relay (K2) is
energized by the control panel.
The relay (K2) is energized.
The battery charging voltage
regulator (VR) is excited.
The stop solenoid (FS) is energized
and opens. Fuel flows to the pump.
The unit operates.
The engine alternator charges
the battery.
The engine speed opens the low
oil pressure switch (LOP)
contacts and avoids stopping the
engine.
The unit operates because the
High Cylinder Head Temperature
(HCHT) and High Exhaust
Temperature (HET) contacts that
are normally opened, are still
opened together with the low oil
pressure switch (LOP) contacts.
Figure 8-4 Starting Operation