Spirit II User’s Manual
Section 6: Maintenance &Troubleshooting
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6-9
General Troubleshooting
The following contains general troubleshooting guidelines for the Spirit system. Please
contact technical support for any issues not covered in this section. Before any tests
are performed, make sure that all system fuses are good; remove top cover of power
supply to check these fuses.
Problem
Possible Cause
Power supply indicator
(white light) will not
illuminate
1. Primary disconnect fuse blown.
2. Internal power supply fuse is blown (F1A, F1B).
3. Power supply indicator light is burned out or the
associated wiring is bad.
4. Control Transformer or associated wiring bad.
Power Supply will not
energize after moving the
pointer to ON and then
pressing the select
button
on the MGC.
1. ASC door open.
2. Low coolant level.
3. Fuse is blown (F1-F6).
4. Faulty Off Button or associated wiring.
5. Off Relay faulty.
Power Supply will not stay
on after moving the pointer
to ON and then pressing the
select
button on the MGC.
1. Faulty DSP board.
2. Off Relay faulty.
No arc at the torch
1. Incorrect torch consumables installed.
2. Incorrect gas pressure settings.
3. Pilot arc transistor (PAT) is not operating properly.
Check the PAT LED (D43) on the DSP
microprocessor board.
4. Damaged or loose torch lead connections.
5. Shorted torch or torch leads. Check the continuity
between the Electrode lead and the Nozzle lead to
make sure they are not shorted.
6. Open torch or torch leads. Check the continuity
from the Electrode lead to the torch electrode and
the Nozzle lead to the large brass body of the
torch.
The arc will not transfer to
the workpiece
1. Loose work ground connection.
2. Pierce height too high.
3. Incorrect, damaged, or worn consumables.
