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FUNCTION PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
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 1-888-935-3877.
TROUBLESHOOTING & REPAIR
F-9 F-9
POWER WAVE 655/R
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CAUTION
The machine often "noodle welds"
when running a particular process.
The output is limited to approxi-
mately 100 amps.
1. The machine may be trying to
deliver too much power. When
the average output current
exceeds 570 amps, the
machine will "phase back" to
protect itself.
Adjust the procedure or reduce
the load to lower the current
draw from the Power Wave
655/R machine.
1. Perform the Current
Transducer Test.
2. The Control Board may be
faulty.
The Power Wave 655/R will not
produce full output.
1. The input voltage may be too
low, limiting the output capability
of the machine. Make certain
the input voltage is correct for
the machine and the reconnect
panel configuration.
2. Make sure all three phases of
input power are being applied to
the machine.
1. Perform the Output Rectifier
Test.
2. Perform the Current Trans-
ducer Test.
3. Perform the Power Board Test.
4. The Control Board may be
faulty.