Guardian Quietpact 55 Repair Manual page 23

S S e e c c t t i i o o n n 5 5
E E N N G G I I N N E E D D C C C C O O N N T T R R O O L L S S Y Y S S T T E E M M
CIRCUIT CONDITION-RUNNING:
With the FUEL PUMP (FP) and FUEL SOLENOID (FS)
operating and ignition occurring, the engine should
start, and the START-STOP SWITCH (SW1) is
released.
A voltage is induced into the Stator's BATTERY
CHARGE WINDING. This voltage is delivered to the
ENGINE CONTROLLER BOARD (PCB) via Wire 66 to
prevent STARTER MOTOR engagement above a cer-
tain rpm.
Circuit board action terminates DC output to the
STARTER CONTACTOR RELAY (SCR), which then
de-energizes to end cranking. Circuit board action ter-
minates DC output to the CHOKE SOLENOID (CS).
The choke will go to a position determined by the
CHOKE HEATER (CH).
The LOW OIL PRESSURE SWITCH (LOP) is nor-
mally closed. After start-up, engine oil pressure
will open the LOP.
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