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Observe Safety Guidelines TROUBLESHOOTING GUIDE
detailed in the beginning of this manual.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely,
contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
The Auxiliary Receptacle is "dead."
The 120VAC is not present at the
receptacle.
1. Check the 10 amp circuit break-
er (CB2) located on the case
front. Reset if necessary.
2. Check the 6 amp circuit breaker
(CB4) located in the reconnect
area. Reset if necessary.
3. Make sure all three phases of
input power are being applied to
the machine.
1. Check the receptacle and asso-
ciated wiring for loose or faulty
connections. See the Wiring
Diagram.
2. Perform the T2 Auxiliary
Transformer Test.
The Power Wave 455R is "trig-
gered" for output but there is no
welding output.
1. Make sure that the triggering
method and device is correct
and operating properly.
2. Check circuit breaker CB4.
Reset if tripped.
Use troubleshooting software to
find the problem. Contact Lincoln
Electric Service Department to
obtain software.
When in the STT mode,
the spatter is higher than normal
and the arc is inconsistent.
1. Make certain the work sense
lead (21) is connected properly.
2. Make certain the electrode
cable is connected only to the
STT output terminal and NOT
the Power Wave positive output
terminal.
3. Make sure the welding parame-
ters are correct for the process.
1. Perform the STT Chopper
Board Test.
2. Perform the Current
Transducer (STT) Test.
3. The Control Board may be
faulty.
F-8 F-8
TROUBLESHOOTING & REPAIR
POWER WAVE 455/R
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