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F-6
TROUBLESHOOTING AND REPAIR
F-6
POWER WAVE 455/POWER FEED 10
POWER WAVE
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 the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.
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CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
The Power Wave has no output --
the fan is running -- a “clicking”
sound may be heard coming from
the machine. The main contactor
CR1 is not “pulling in”. If the
STATUS LED is not steady green,
see
LED Code Table.
The fan runs slow or intermittently
-- low or no weld output.
1. Turn the input power OFF
immediately.
2. Make certain the reconnect
panel is configured correctly for
the applied input voltage.
3. If the machine is connected for
380 VAC or higher and has not
been used for a long period of
time, the capacitors may require
“conditioning”. Let the Power
Wave 455 run at an idle state
for 30 minutes.
1. Make certain the reconnect
panel is configured correctly.
1. Perform the
T1 Auxiliary
Transformer Test.
2. Perform the
Main Contactor
Test.
3. Perform the
Input Rectifier
Test.
4. Perform the
Switch Board
Test.
5. The power board rectifier may
be faulty. Check or replace.
Also check associated wiring.
See wiring diagram.
6. Perform the
Power Board Test.
7. The input voltage board may be
faulty.
8. The control board may be faulty.
1. Perform the
T1 Auxiliary
Transformer Test.
2. The power board rectifier may
be faulty. Check or replace.
OUTPUT PROBLEMS (Continued)
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