Adjustments / Tests; General; Testing The 400 Hz. Generator Set - Hobart 60CU24 Operation And Maintenance Manual With Illustrated Parts List

OM-2098C / Operation and Maintenance Manual
60CU24 / Series 500060C / 400 Hz. Generator Set
Section 3 Adjustment/Test

1) General

These adjustments and test procedures are applicable to testing and adjusting the generator set after
major repair, major parts replacements, or overhaul.
IMPORTANT
In order to perform most of the following test, a load bank with an EF interlock circuit
is required. But if no EF interlock is available on a load bank, see special procedure
in the EF Bypass section for testing the EF circuit.

2) Testing the 400 Hz. Generator Set

a) Pre-operational Test Procedures
(1) Connect cables from the generator output terminals to a load bank. Use cables of the same size
and length as those to be used in service. Be sure the generator output N cable is grounded.
(2) Check engine oil level. Oil should be at high bar on the dipstick.
(3) Check radiator coolant level (See 2-2, Paragraph 6).
(4) Check tension of drive belt (See 2-2, Paragraph 8).
(5) Inspect for oil, fuel and coolant leaks.
(6) If the setting of the output voltage coarse adjustment potentiometer (Figure 8) on the voltage
regulator has been disturbed, set it at center position (halfway between full clockwise position and
full counterclockwise position).
(7) Check control panel lights circuit breaker (Figure 2) by pressing panel "LAMPS" push button
switch (Figure 2). If panel lights operate, the circuit breaker, switch, and lamps are good.
(8) Check fault indication lights by pressing "TEST/RESET" push button switch (Figure 2). If fault
code display lights up, the control circuit breaker (Figure 3) is good.
(9) Make a general inspection of all wiring, and terminals. Inspect the equipment to be certain no
damage will result from starting the engine.
b) Operational Test Procedures
(1) Start the engine in accordance with instructions in Section 1-3, Paragraph 2.
(2) Check operation of engine instruments; ammeter, coolant temperature indicator, oil pressure
gage and hour meter (all shown in Figure 1).
(3) Check engine idle speed. Should be 1000 +/- 25 RPM.
NOTE: A stroboscope may be required for this check.
(4) Again check for oil, fuel, and coolant leaks and correct any leaking condition.
April 01, 2005 Chapter 2-3
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