Lincoln Electric POWER WAVE455M Operator's Manual page 34

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PROBLEMS
(SYMPTOMS)
Machine wonʼt produce full output.
Auxiliary receptacle is "dead" no
auxiliary voltage .
General degradation of the weld
performance
Excessively long and erratic arc.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, con-
tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
OUTPUT PROBLEMS
1. Input voltage may be too low,
limiting output capability of the
power source. Make certain that
the input voltage is proper,
according to the Rating Plate
located on the rear of the
machine.
2. Input may be "single phased".
Make certain the input voltage is
proper on all three Input lines.
3. Secondary current or voltage not
be properly calibrated. Check
values displayed on the Power
Feed 10/11 verses readings on
an external meter.
1. Circuit breaker CB2 (on case
front) may have opened. Reset.
2. Circuit breaker CB4 (in recon-
nect area) may have opened.
Reset.
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
vs. actual current measured via
external meter.
5. Check the actual voltage dis-
played on the Power Feed
vs. actual voltage measured via
external meter.
6. Check the actual WFS displayed
on the Power Feed
al WFS measured via external
meter.
1. Check for proper configuration
and implementation of voltage
sensing circuits.
CAUTION
POWER WAVE
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas
of misadjustments have been
checked and the problem persists,
contact your local Lincoln
Authorized Field Service Facility.
10
®
® 10
® 10 vs. actu-
455M
®
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