Control Box Assembly - Hobart 60CU20 Operation And Maintenance Manual With Illustrated Parts List

OM-2226 / Operation and Maintenance Manual
60CU20 / Series 500062 / 400 Hz. Generator Set

8) Control Box Assembly

The control box is a sheet metal enclosure that houses and provides mounting facilities for engine and
generator controls, as well as, monitoring device and circuits.
a) Operator Controls
The control system is divided into three sections. On the left side of the control panel, as one faces it,
are engine meters. On the right side of the control panel are generator meters. Below the control
panel are pushbutton switches for operating the engine and generator.
(1) Engine Monitoring Section
•
Engine coolant temperature gage (M24)
The temperature gage is an electrical type that is connected by a wire to a water temperature
sensor installed in the engine cooling system. The gage indicates engine coolant
temperature in the range of 100-280 º F (38-138º C).
•
Engine hour meter (M4)
The hour meter is electrically driven from the 12 VDC battery system. The hour meter
measures and records the engine's running time and will record up to 9999.9 hours on five
revolving drums. It is only functional when the engine is running.
•
Engine voltmeter (M5)
The voltmeter indicates the voltage across the 12 VDC batteries. The meter scale is
graduated 10 V to 16 V.
•
Engine fuel gage (M13)
An electric fuel gauge receives its controlling signal from a sending unit in the fuel tank. 12
VDC operating power is supplied to the fuel gauge when the ENGINE START pushbutton
switch is pressed. The fuel level can also be checked when the unit isn't running by pressing
the panel light LAMPS pushbutton switch.
•
Engine oil pressure gage (M25)
The oil pressure gage is an electrical type that is connected by a wire to an oil pressure
sensor installed in the engine lubricating system. The range is 0 to 125 PSI (0 to 862 kPA).
(2) Generator Monitoring Section (shown with analog meters)
•
Frequency Meter (M3)
The frequency meter is an analog type and indicates the frequency of the generator output
alternating current in the range of 360 to 440 Hz (cycles per second).
May 2, 2013 Chapter 1-1
Page 11