CONTROL PANEL (TYPE 3)
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 and current flows to energize engine fault light
(ENFL) and 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 de-
energizes 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) and engine fault
light (ENFL) will give light. To start the engine, do the
steps that follow:
1. Turn engine control switch (ACS) to OFF or STOP.
This will prevent the engine from starting if (ENFL) is
pushed.
2. Push and release engine fault light (ENFL). This will
open (ENFL) contacts for a moment and de-
energize overcrank indicating relay (OCIR). (OCIR)
contacts will open and de-energize engine fault light
(ENFL) and shutoff relay (SR).
3. Turn the engine control switch to AUTO. If the
engine does not start in approximately 30 seconds,
the overcrank indicating relay and engine fault light
will give light.
4. Turn engine control switch (ACS) to OFF or STOP.
Correct the problem that caused the engine not to
start. Make reference to TROUBLESHOOTING.
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