CONTROL PANEL (TYPE 4)SYSTEMS OPERATIONACS Engine Control SwitchEngine control switch (ACS) controls the engine startand stop systems. To start the engine, move the switchto the MANUAL position. To stop the engine move theswitch to the STOP or OFF/ RESET position. Forstandby application (engine starts when remote initiatingcontact I closes), move the switch to the AUTO position.To start after engine shutdown caused by high watertemperature, low oil pressure or overspeed, turn switchto STOP position and correct fault. Then move switch toOFF/ RESET position. Engine can now be started inMANUAL or AUTO position. For more information onthe operation of this switch, make reference to theAUTOMATIC START/STOP SYSTEM.NOTE: X gives an indication of a closedcontact, X on the line gives an indication of"make before break."ACV Alternating CurrentVoltmeterAC voltmeter (ACV) shows the potential differential(voltage) between phase T1 -T2, T2-T3 or T3-T1 atposition 1, 2 or 3 respectively. Make reference to theALTERNATING CURRENT AMMETER.DCA Direct Current AmmeterDC Ammeter (DCA) is used in place of button (1)when the ammeter is ordered. This ammeter shows theamount of DC current in amperes, that flows in thealternator circuit (if so equipped).FM Frequency MeterFrequency meter (FM) shows the hertz (cycles persecond) of the electricity made when the generator set isin operation. There is a direct relation between thefrequency of the electricity and the rpm of the generatorset; see formula.frequency (hertz) =numberofpolesxrpm120GS Governor SwitchGovernor switch (GS) is used when the engine isequipped with a remote control synchronizing motor forthe governor. Engine speed is controlled with thisswitch.HS Heat SwitchHeat switch (HS) is in place of button (2) when theengine is equipped with glow plugs. This switch is usedto operate the glow plugs for cold weather starting.OPG Oil Pressure GaugeOil pressure gauge (OPG) shows the pressure, in psi,of engine lubrication oil. When pressure switch (PSW) isclosed, oil pressure gauge (OPG) is connected acrossbattery voltage. There is a relation between the currentflow in this circuit and the engine oil pressure read on oilpressure gauge (OPG). Oil pressure sender (OP)controls the current flow by a change in resistanceaccording to the change in engine oil pressure.PAM Prealarm ModuleMake reference to ATTACHMENTS.PL1, 2 Panel LampsLight for the control panel is given by panel lamps(PL1 and PL2). These lamps are controlled by panellight switch (PLS).VLR Voltage Level RheostatVoltage level rheostat (VLR) takes the place of voltagelevel rheostat (R2) on the generator regulator assembly.It is used to adjust the voltage output of the generator.NOTE: Make reference to OPERATION OFGENERATOR; REGULATOR ADJUSTMENT.On generators equipped with a generatormounted control panel, the yellow wire fromvoltage level rheostat (R2) to terminal (7) onthe regulator terminal strip is disconnectedat terminal (7).218
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