Control Description; Control Panel Components - Onan DJB Operator's Manual

Section 3. Control Description

CONTROL PANEL COMPONENTS

NOTE: Controls and instruments on the genset vary according to
customer requirement.
Standard Features
• Start-Stop Switch: Starts and stops the genset lo-
cally.
• Battery Charge Rate DC Ammeter: Monitors the
battery charging current.
START-STOP
KNOCKOUT PLUGS FOR
SWITCH
OPTIONAL CONTROLS
DC
AMMETER
FIGURE 3-1. STANDARD CONTROL PANEL
Optional Features
(found on Housed Units)
• AC Voltmeter: Monitors output voltage.
• Voltmeter Phase Selector Switch: Selects the
output voltage phase to be measured.
• Voltage Adjust Rheostat: Adjusts output voltage
±5%.
• Running Time Meter: Registers the total genset
running time: used to time service intervals.
FIELD
BREAKER
PREHEAT
SWITCH
FUSE
ES1972C
3-1
• Exciter Field Circuit Breaker: Protects the exciter
and the alternator if the voltage regulator malfunc-
tions.
• Preheat Switch: Activates the manifold heater and
glow plugs for cold engine starting.
• Oil Pressure Gauge: Monitors engine lubricating
oil pressure.
• Fuse: Protects DC circuit against reversed battery
terminals.
• Frequency Meter: Indicates the frequency (hz) of
the output voltage. This meter can be used to deter-
mine engine speed (one hz equals 30 rpm).
• Warning Lights: Red warning lights indicate the
following conditions:
1. Overspeed
2. Low oil pressure
3. High engine temperature
• Reset Pushbutton: Permits restarting after a fault
condition is corrected.
• Line Circuit Breakers: Protects the generator from
line overloads.