Hobart 6824-1, Operation And Maintenance Manual, Page: 69 / 214

3. Electrical System (12-V DC)
a. Lights
Check all lights for proper operation DAILY. Replace any defective lamps (bulbs) as soon as
discovered. Figure 2 lists ALL lamps, their location, and part numbers.
b. Fuses
Check and replace fuses as required. See Figure 3 for fuse sizes and locations. Figure 3 includes
all fuses used in both the engine and generator electrical systems.
c. Wiring and Connections
(1)
Inspect all cables and leads for broken, worn, and damaged insulation.
(2) Check electrical connections for looseness.
NOTE: A darkened terminal generally indicates a loose connection.
4. Electrical System (115-V AC)
The 400-Hz generator and controls are designed to be as maintenance free as possible. No lubrication
is necessary and no periodic maintenance adjustments are required. However, some regular checks
should be made to be sure all controls, instruments, etc., are working properly.
a. Monitoring Instruments
Observe operation of voltmeter, ammeter, and frequency meter each time the unit is started.
b. Indicating Lights
Check lamps (bulbs) in all of the indicating lights at each start up. Fault indicating lights in the
protective relay tray may be tested by pressing test switch
(1-1; 8, Fig. 10)
c. Protective Modules
Check operation of all protective modules to make certain they will function if a fault should occur in
the output circuit.
(See 2-3; Para. 3, B.)
LIGHT
IDENTIFICAION
LAMP
LOCATION
LAMP
MANUFACTURER NUMBER
Instrument Panel
Lights Control Box Lamp Industry Trade
Number 63
Engine ON Indicating
Light Engine Control Panel Lamp Industry Trade
Number 1815
Contactor CLOSED
Indicating Light Engine Control Panel Lamp Industry Trade
Number 1815
Fault Indicating Lights Protective Relay Tray Lamp Industry Trade
Number 1815
Clearance Lights Canopy Lamp Industry Trade
Number 57
Lamp Identification Chart
Figure 2
OM-499
May 31/94 Revised 2-2
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