CONTROL PANEL (TYPE 3)SYSTEMS OPERATIONShutdown Caused by Engine FailureThe packaged generator set has shutdown sensors, shutdownindicators and shutdown circuit for the conditions that follow.1. Low oil pressure2. High water temperature3. Overspeed4. Overcrank.For information about overcrank shutdown, make reference to ENGINEDOES NOT START.Conditions (1, 2 or 3) will energize its respective indicating relay. Thenumber (2) contacts of the respective relay will close to energize enginefault light (ENFL) and shut-off relay (SR). The number (1) contacts of therespective relay will close to lock in the relay.When shutdown relay (SR) is energized, (SR) contacts open. This de-energizes run relay (RR). Contacts (RR2) close and contacts (RR1)open. (RR2) closed completes a circuit to shut-off solenoid (SS) untilpressure switch (PSW) opens. (RR1) open de-energizes arming relay(AR) and dual speed switch (DSS).Diode (D1) helps prevent electrical sparks (arcing) at the contacts inthe shut-off solenoid circuit, when the shut-off solenoid is de-energized.Engine fault light (ENFL) and the indicating relay for the fault conditionwill 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 it (ENFL) is pushed.NOTE: For start up when (OCIR) indicating relay gives light,make reference to ENGINE DOES NOT START.2.Correct the problem that caused the engine to shutdown.3.Push and release engine fault light (ENFL). This will open(ENFL) contacts for a moment and deenergize the indicatingrelay. The indicating relay contacts will open and de-energizeengine fault light (ENFL) and shutdown relay (SR).NOTE: Reset oil pressure or overspeed switch if necessary.The system is ready to start if engine control switch (ACS)is turned to MAN or AUTO.208
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