Troubleshooting, Caution – Lincoln Electric IM746 POWER WAVE 405 User Manual
Page 35
E-7
TROUBLESHOOTING
E-7
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.
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