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TROUBLESHOOTING
E-8 E-8
POWER WAVE 450
Machine loses output while weld-
ing. Fans and display are function-
ing properly.
For no apparent reason the weld
characteristics have changed.
Machine often “noodle welds” with
a particular procedure.
1. Check for proper input voltages
(per machine nameplate).
2. Check for balanced three-phase
input supply voltage.
3. Check electrode and work
cables for loose or poor connec-
tions.
1. Check for proper wire feed
speed setting. In the MIG/ MAG
and FCAW Modes, check for prop-
er voltage settings. In the
MIG/MAG Pulse Modes, check the
arc length trim setting. These con-
trols are on the wire feeder.
2. Check for proper shielding gas
and gas flow.
3. Check for loose or faulty weld-
ing cables.
1. The machine may be trying to
deliver too much power. When the
average output current exceeds a
maximum limit, the peak current is
drastically cut back. Lower the
welding parameter settings and/or
increase the stickout length to
eliminate this problem.
If all recommended possible areas
of misadjustments have been
checked and the problem per-
sists, contact your local Lincoln
Authorized Field Service Facility.
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 tests/repairs safely, con-
tact your local authorized Lincoln Electric Field Service Facility for technical assistance.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS