Hobart GPU-600 - Trouble, Symptom and Condition; Machine will Not Operate

TROUBLE, SYMPTOM AND CONDITION
PROBABLE CAUSE
TEST, CHECK, AND/OR REMEDY
MACHINE WILL NOT OPERATE
1. Machine will not start.
Step 1. Input power turned OFF at Remote Disconnect Switch.
Turn power ON at Remote Disconnect Switch.
Step 2. Blown fuse in Remote Disconnect Switch.
Replace blown fuse. If fuse blows frequently, determine
and remedy the cause.
Step 3. Incorrect input power connections at machine.
Check input power connections against appropriate
connection diagram in Chapter 8.
Step 4. Incorrect power input (frequency and voltage).
Check that voltage and frequency of power input are
proper for this generator unit, according to the rating on
its nameplate.
Step 5. Broken input cable.
Repair cable as necessary.
2. Line contactor fails to close.
Step 1. Fuse blown or breaker tripped at input disconnect switch.
Replace fuse or reset circuit breaker. Check for cause if
this malfunction happens frequently.
Step 2. Mechanical obstruction on contactor.
Remove obstruction.
Step 3. Defective line contactor switch.
Replace line contactor switch.
Electrical Troubleshooting Chart
Figure 1 (Sheet 1 of 7)
OM-2010
3-4 April 10/89 Revised
Page 4