CONTROL PANEL (TYPE 4)
SYSTEMS OPERATION
Engine Does Not Start
If the engine does not start in approximately 30 seconds, overcrank timer
(OCT) will let current flow to overcrank indicating relay (OCIR). (OCIR) contacts
close to lock in the (OCIR) relay and close shutdown relay (SR).
(SR) contacts open. This de-energizes run relay (RR) and magnetic switch
(MS).
When run relay (RR) is de-energized. contacts (RR2) close and contacts
(RR1) open. (RR2) closed completes a circuit to shutoff solenoid (SS) until
pressure switch (PSW) opens. (RR1) open deenergizes arming relay (AR). dual
speed switch (DSS) and overcrank timer (OCT).
NOTE: Pressure switch (PSW) is not always closed when
the engine cranks. Pressure caused by starting motor
rotation of the engine is not always enough to close (PSW).
When magnetic switch (MS) is de-energized. (MS) contacts open. This de-
energizes pinion solenoid (PS). (PS) contacts open and de-energize starting
motor (SM).
Overcrank indicating relay (OCIR) will give light. To start the engine, do the
steps that follow:
1.
Turn engine control switch (ACS) to OFF RESET. This will open (ACS)
contact (15) and de-energize overcrank indicating relay (OCIR). (OCIR)
contacts will open and de-energize the shutoff relay (SR).
2.
Turn the engine control switch to MANUAL or AUTO if I contact is
closed. If the engine does not start in approximately 30 seconds. the
overcrank indicating relay will give light.
3.
Turn engine control switch (ACS) to STOP position. Observe fault lights
and turn ACS to OFF RESET. Correct the problem that caused the
engine not to start. Make reference to TROUBLESHOOTING.
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