Kohler 8EFOZ User Manual

TP-6053 7/0426 Section 6 Controller Troubleshooting
The normally open K1 contacts close to energize the
(optional) oil pressure, coolant temperature, battery
voltmeter, and hourmeter gauges and the generator ON
light.
The normally open K5 contacts close to permit the high
water temperature (HWT), high exhaust temperature
(HET), and low oil pressure (LOP) switches to function.
Note: The low oil pressure (LOP) switch contacts open
when the engine develops oil pressure.
One s et of normally closed K1 contacts opens to
disconnect the circuit to the positive (+) connection of
the exciter fields (field flashing).
A set of normally closed K1 contacts opens to
disconnect the circuit to the negative (--) connection of
the exciter field (field flashing). The normally closed K1
contacts open to deenergize the K3 relay (LED3 goes
out) and prevent accidental reenergizing of the starter
motor. The K3 contacts open to deenergize the K20
relay. The K20 contacts open to deenergize the S relay.
The S contacts open to deenergize the starter motor.
When the generator set is running, the start switch
contacts N and 47 open by releasing the start/stop
rocker switch.
6.2.3 Stop
Close the start/stop switch between N and 43 (local or
remote).
The K4 relay energizes (LED4 lights).
The normally closed K4 contacts open to deenergize the
K25 relay. The K25 normally open contacts open to
deenergize the fuel solenoid.
The normally open K4 contacts close to maintain ground
to the K4 relay.
As the generator set shuts down, the K1 relay
deenergizes (LED 1 goes out). The normally open K1
contacts open to deenergize the K2 relay (LED 2 goes
out). The normally closed K2 contacts close to ground
the circuit to the K4 relay until the generator set comes to
a complete stop.
6.3 Engine Safety Shutdown
Switches
6.3.1 Low Oil Pressure (LOP) Shutdown
When low oil pressure occurs, the LOP shutdown switch
contacts close and energize the K4 relay (LED4 lights).
Note: During cranking the low oil pressure shutdown
switch is deactivated until the K5 relay energizes.
This delay allows the engine to reach normal
operating oil pressure. The normally closed LOP
contacts open when the generator set develops
adequate oil pressure.
The normally closed K4 contacts open to deenergize the
K25 relay. The K25 normally open contacts open to
deenergize the fuel solenoid.
The normally open K4 contacts close to maintain ground
to the K4 relay.
As the generator set shuts down, the K1 relay
deenergizes (LED1 goes out). The normally open K1
contacts open to deenergize the K2 relay (LED2 goes
out). The normally closed K2 contacts close to ground
the circuit to the K4 relay until the generator set comes to
a complete stop.
6.3.2 High Water Temperature (HWT)
and High Exhaust Temperature
(HET) Shutdown Switch
When a high temperature is encountered at one (or
both) of these sources, the shutdown switch contacts
close and energize the K4 relay (LED4 lights).
The normally closed K4 contacts open to deenergize the
K25 relay. The K25 normally open contacts open to
deenergize the fuel solenoid.
The normally open K4 contacts close to maintain ground
to the K4 relay.
As the generator set shuts down, the K1 relay
deenergizes (LED1 goes out). The normally open K1
contacts open to deenergize the K2 relay (LED2 goes
out). The normally closed K2 contacts close to ground
the circuit to the K4 relay until the generator set comes to
a complete stop.

Kohler 8EFOZ Specifications

General

Brand	Kohler
Model	8EFOZ
Category	Marine Equipment
Language	English