Control Panels; Northern Lights Generator Sets - Northern Lights OM944W3 Operator's Manual

Figure 4-A: Series 1-B Generator Control Panel
Figure 4-B: Series 3 Generator Control Panel
Figure 4-C: Series 4 Generator Control Panel

Control Panels

1. PREHEAT/ SHUTDOWN BYPASS
This switch serves two functions:
1. Preheats air before beginning the starting process.
Press switch for 10-20 seconds before attempting
startup.
2. Bypasses the safety shutdown feature during the
starting process. Keep switch engaged while starting
engine, and for 2 to 3 seconds afterwards, allowing oil
pressure to build beyond shutdown setpoint.
2. ENGINE CONTROL SWITCH
To start the engine, hold this switch in the START
position until the engine is running. After the engine
starts, release the switch and it will return to RUN
position. To stop the engine, hold the switch in the
STOP position.
NOTE: The rocker switch is used on Series 1 panels
only, and has a light that glows when the set is
running.
3. HOUR METER
Keeps track of engine running time.
4. OIL PRESSURE GAUGE
Shows the oil pressure in the engine lubricating system.
5. WATER TEMPERATURE GAUGE
Registers the temperature of the cooling water.
6. D.C. VOLTMETER
When the engine is stopped, the voltmeter indicates the
condition of the battery. When the engine is running,
the voltmeter indicates the voltage output of the
alternator.
For Series 4 Control Panels only:
7. A.C. VOLTMETER
Shows the generator output voltage.
8. FREQUENCY METER (Hertz)
The frequency meter indicates alternating current
frequency: 60 Hz (1800 rpm) or 50 Hz (1500 rpm).
9. AMMETER/VOLTMETER SELECTOR
Used to check the voltage and current of each phase.
Return to "Amps Off" position when not monitoring.
10. A.C. AMMETER
Shows the generator load on each phase. The phase is
selected with the Ammeter Selector switch (
OM944W3 1/23
14
).
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