CONTROL PANEL (TYPE 5)
SYSTEMS OPERATION
Engine Starts
At 600 rpm, crank terminate switch (CTS) closes. This energizes the
arming relay (AR). Contact (AR2) opens which disconnects the circuit to
(MS) and the overcrank timer (OCT). The contact (AR2) closes to lock in
the (AR) relay. Contact (AR3) closes to turn on the water temperature
and oil pressure gauges.
At this same time, the (CTS) contact arms the time delay relay
(TDR). The TDR has a fixed 9 second delay to allow for oil pressure
build up. When oil pressure comes up, it actuates the oil pressure switch
(OPS). The (OPS) contact clears the failure circuit and closes the (TDR)
timer bypass contact.
When the TDR contact closes, it energizes the time delay auxiliary
(TDX). The TDX arms the oil pressure failure circuit along with the shut-
off solenoid (SS) and the optional air shut-off solenoid (ASO).
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