CONTROL PANEL (TYPE 5)
SYSTEMS OPERATION
Manual Shutdown
When engine control switch (ACS) is turned to the STOP position or
OFF/RESET position, contacts (10 and 11) are open. With contacts(10
and 11) open, the run relay (RR) de-energizes.
When run relay (RR) is de-energized, contact (RR2) closes and
contact (RR1) opens. With (RR2) closed, it completes a circuit to the
shut-off solenoid (SS). With contact (RR1) open, the arming relay (AR)
is de-energized.
After the engine stops, (TDX) will open to de-energize the shutoff
solenoid.
NOTE: TDX will remain closed for 70 seconds after the engine oil
pressure switch (OPS) has gone to its normally closed position.
Diode DI helps prevent electrical sparks (arcing) at the contacts in
the shutoff solenoid circuit when the shutoff solenoid is de-energized.
NOTE: The shutdown solenoid (SS) is protected against overload
by a circuit breaker (CB1). If the engine does not shut down when
the ACS is turned to STOP, check the condition of CB1. Press to
reset. [Button DOES NOT pop out when breaker is tripped].
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