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b. Meters
1. Ammeter (A)
The ammeter ( see Figure 1-6, Figure 1-7, Figure 1-8) is
an indicator of the charging system and unit electrical
draw. It indicates the rate of discharge or charge of the
battery. During start up, the intake heater draws
approximately 42 amps.
2. Total T ime Meter (TT)
The total time meter (see Figure 1-6, Figure 1-7,
Figure 1-8) calculates the total hours and provides an
accurate readout of accumulated engine running time.
This data can be used to establish the proper periodic
maintenance schedule (refer to Section 4.1).
c. Manual Switches
1. Intake Heater Switch (HS) (see Figure 1-6,
Figure 1-7)
The intake heater switch is of the momentary type.
When held in the PREHEAT position, the switch allows
approximately 4 2amps o f battery current to f low int othe
intake heater, which preheats the air within the intake
manifold andallows t heengineto s tart. After startingthe
engine, the intake heater switch should continue to be
heldin theONposition forapproximately 5seconds until
the engine has developed enough oil pressure to close
the oil pressure safety switch.
2. Ignition Switch (IGN) (see Figure 1-6, Figure 1-7)
The ignition switch is of the momentary type to be used
in the OFF/ON/START positions. When held in the
STAR T (ignition) position, it energizes the starter motor
solenoid, which in turn allows the starter motor to crank
the engine. The switch is released to the RUN position
once the engine has started.
3. Ignition Switch (IGN)(Auto Restart) (see Figure 1-8)
The ignition switch is of the maintained contact type to
be used in the RUN/OFF positions. When switched to
the RUNposition, it energizes thecontrol module, whic h
in turn controls all functions of the genset.
1.8 SAFETY DEVICES
Safety devices, such as circuit breakers, fuses, and
safety switches, protect system components from
damage.
The AC generator , solid state battery charger, fuel
heater, high water temperature, safety relay, total time
meter and intake air heater are protected by circuit
breakers. If a safety device opens and there is an
interruption of electrical current, the electronic governor
module will be de--energized, which will also
de--energize the fuel solenoid, interrupt the fuel flow to
the engine and stop the engine.
In units with auto restart, the engine, engine control
devices, and engine monitoring devices are protected
by the auto restart module, low coolant sensor (if
equipped), circuit breaker, low oil pressure switch, and
high water temperature switch. These safety devices
monitor system operating conditions and open a set of
electrical contacts when anunsafe condition oc curs. If a
safety device opens and there is an interruption of
electrical current, the electronic governor module willbe
de--energized, which will also de--energize the fuel
solenoid, interrupt the fuel flow to the engine and stop
the engine.
De--energizing the fuel s olenoidshuts off the fuelsupply
to the engine; thus stopping the engine. Safety device
specifications are provided in Table 1-4.
CONTROL
BOX
CONTROL
PANEL
3
4
5
6
7
2
1
9
12
8
10
13
11
1. Total Time Meter
2. Water Temperature Gauge
3. Oil Pressure Gauge
4. Ammeter
5. Intake Air Heater Switch
6. Ignition Switch
7. Battery Charger Circuit Breaker (CB5)
8. Ground Studs
9. Circuit Breaker (CB2)
10. Circuit Breaker (CB3)
11. Intake Heater Relay
12. Safety Relay
13. Intake Heater T imer
Figure 1-6 Standard Control Panel and Box