Circuit protection, Engine safety shutdown switches, Ac circuit breaker (optional) – Kohler 3.5CFZ User Manual

Page 25: Input (controller) fuse (10 amp), Battery-charging fuse (10 amp), Low oil pressure shutdown switch

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TP-5695 12/93

2-4 Operation

Circuit Protection

AC Circuit Breaker (Optional)

The optional AC circuit breaker(s) located on the front
panel of the controller protect the generator output
windings. If a load circuit loses power, the cause may be
a tripped AC circuit breaker. If a tripped circuit breaker is
reset and then trips again, find and correct the short in
the load circuit that is causing the problem.

Input (Controller) Fuse (10 Amp)

The input fuse protects the controller circuitry. If the
generator set engine will not crank and the battery and
battery connections appear okay, the input fuse may be
blown. If this fuse, located on the front panel of the
controller, is replaced and then blows again, find and
correct the short that is causing the problem.

Battery-Charging Fuse (10 Amp)

The battery-charging fuse protects the battery-charging
circuit. If the battery goes dead and the battery and
battery-charging alternator are otherwise normal, the
battery-charging fuse may be blown. If this fuse, located
on the front panel of the controller, is replaced and blows
again, find and correct the short in the charging circuit
that is causing the problem.

NOTE

When a fuse replacement is required, be sure fuse has
the same ampere rating and is the same type (for
example: ABC or 3AB, ceramic). Do not substitute
“clear” glass-type fuses for ceramic fuses. If ampere
rating is unknown or questionable, see Wiring Diagram.

WARNING

Accidental starting.
Can cause severe injury or death.
Disconnect battery cables before working on
generator set (negative lead first and reconnect it
last).

Accidental starting can cause severe injury or
death.
Disconnect battery cables (remove negative
lead first and reconnect it last) to disable generator set

before working on any equipment connected to
generator. The generator set can be started by remote
start/stop switch unless this precaution is followed.

Engine Safety

Shutdown Switches

The engine is protected by three engine safety
shutdown switches. Activating any of these switches
while the generator set is running, results in an
immediate, automatic shutdown. During start-up, the
engine safety shutdown feature is inhibited until a
generator output is sensed in order to allow the oil pump
output to reach normal operating pressure.

Low Oil Pressure Shutdown Switch

The low oil pressure shutdown switch protects the
engine against internal damage, if the oil pressure drops
below 20 psi (138 kPa), due to an engine oil pump failure
or other engine malfunction. The location of the low oil
pressure shutdown switch is shown in Figure 2-2.

NOTE

The low oil pressure shutdown switch does not act as a
low oil level switch. The only way to protect against
engine damage due to low oil level is to check the oil
level regularly.

1

258000-D

1. Low Oil Pressure Shutdown Switch

Figure 2-2. Low Oil Pressure Shutdown Switch

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