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TROUBLESHOOTING & REPAIR
F-5 F-5
POWER WAVE 450
TROUBLESHOOTING GUIDE Observe Safety Guidelines
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, con-
tact 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
OUTPUT PROBLEMS
Major physical or electrical dam-
age is evident when the sheet
metal cover(s) are removed.
1. Contact your local authorized
Lincoln Electric Field Service
Facility for technical assis-
tance.
Machine is dead – no output – no
fans – no displays.
1. Check the main input fuses. If
open, replace.
2. Make certain that the input
power switch (S1) is in the
“ON” position.
3. Check for proper input voltage
– must match the rating on the
machine nameplate.
4. Make certain the reconnect
panel is configured properly for
the applied voltage.
5. Check fuse (F1) in the recon-
nect panel. If faulty, replace
with 5-amp slow-blow fuse.
1. If fuse (F1) quickly fails, per-
form the Auxiliary
Transformer Primary Wiring
Harness Test.
2. If fuse (F1) does not fail, per-
form the Auxiliary
Transformer Test #1.