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Troubleshooting, Caution – Lincoln Electric IM746 POWER WAVE 405 User Manual

Page 35

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TROUBLESHOOTING

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POWER WAVE 405

Observe all Safety Guidelines detailed throughout this manual

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

CAUTION

PROBLEMS

(SYMPTOMS)

POSSIBLE AREAS OF

MISADJUSTMENT(S)

RECOMMENDED

COURSE OF ACTION

General degradation of the weld per-
formance

Excessively long and erratic arc.

1.Check for feeding problems, bad

connections, excessive loops in
cabling, etc.

2. Verify weld mode is correct for

processes.

3. The power source may require

calibration.

4. Check the actual current dis-

played on the Power Feed 10 vs.
actual current measured via exter-
nal meter.

5. Check the actual voltage dis-

played on the Power Feed 10 vs.
actual voltage measured via exter-
nal meter.

6. Check the actual WFS displayed

on the Power Feed 10 vs. actual
WFS measured via external
meter.

1. Check for proper configuration

and implementation of voltage
sensing circuits.