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TROUBLESHOOTING & REPAIR
F-7 F-7
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
Fans run slow or intermittently –
display is very dim – no weld out-
put.
1. Make certain the reconnect
panel and fuse (F1) jumper “A”
is configured properly for the
input voltage being applied.
1. Perform the Auxiliary
Transformer Test #1.
Machine has no output – no dis-
play – fans run – circuit breaker (5
amp) repeatedly trips.
1. Make sure that not more than
5 amps of auxiliary power are
being drawn.
2. Remove the wire feeder control
cable from the Power Wave. If
the symptom disappears, the
wire feeder or control cable is
faulty.
1. The circuit breaker (5 amp)
may be faulty. Test or replace.
2. Perform the Auxiliary
Transformer #1 Secondary
and Wiring Harness Test.