CONTROL PANEL (TYPE 4)
SYSTEMS OPERATION
ACS Engine Control Switch
Engine control switch (ACS) controls the engine start
and stop systems. To start the engine, move the switch
to the MANUAL position. To stop the engine move the
switch to the STOP or OFF/ RESET position. For
standby application (engine starts when remote initiating
contact I closes), move the switch to the AUTO position.
To start after engine shutdown caused by high water
temperature, low oil pressure or overspeed, turn switch
to STOP position and correct fault. Then move switch to
OFF/ RESET position. Engine can now be started in
MANUAL or AUTO position. For more information on
the operation of this switch, make reference to the
AUTOMATIC START/STOP SYSTEM.
NOTE: X gives an indication of a closed
contact, X on the line gives an indication of
"make before break."
ACV Alternating Current Voltmeter
AC voltmeter (ACV) shows the potential differential
(voltage) between phase T1 -T2, T2-T3 or T3-T1 at
position 1, 2 or 3 respectively. Make reference to the
ALTERNATING CURRENT AMMETER.
DCA Direct Current Ammeter
DC Ammeter (DCA) is used in place of button (1)
when the ammeter is ordered. This ammeter shows the
amount of DC current in amperes, that flows in the
alternator circuit (if so equipped).
FM Frequency Meter
Frequency meter (FM) shows the hertz (cycles per
second) of the electricity made when the generator set is
in operation. There is a direct relation between the
frequency of the electricity and the rpm of the generator
set; see formula.
frequency (hertz) =number of poles x rpm
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GS Governor Switch
Governor switch (GS) is used when the engine is
equipped with a remote control synchronizing motor for
the governor. Engine speed is controlled with this
switch.
HS Heat Switch
Heat switch (HS) is in place of button (2) when the
engine is equipped with glow plugs. This switch is used
to operate the glow plugs for cold weather starting.
OPG Oil Pressure Gauge
Oil pressure gauge (OPG) shows the pressure, in psi,
of engine lubrication oil. When pressure switch (PSW) is
closed, oil pressure gauge (OPG) is connected across
battery voltage. There is a relation between the current
flow in this circuit and the engine oil pressure read on oil
pressure gauge (OPG). Oil pressure sender (OP)
controls the current flow by a change in resistance
according to the change in engine oil pressure.
PAM Prealarm Module
Make reference to ATTACHMENTS.
PL1, 2 Panel Lamps
Light for the control panel is given by panel lamps
(PL1 and PL2). These lamps are controlled by panel
light switch (PLS).
VLR Voltage Level Rheostat
Voltage level rheostat (VLR) takes the place of voltage
level rheostat (R2) on the generator regulator assembly.
It is used to adjust the voltage output of the generator.
NOTE: Make reference to OPERATION OF
GENERATOR; REGULATOR ADJUSTMENT.
On generators equipped with a generator
mounted control panel, the yellow wire from
voltage level rheostat (R2) to terminal (7) on
the regulator terminal strip is disconnected
at terminal (7).
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