Lincoln Electric MAGNUM IM632-B - Manual (Page 16)

E-2 TROUBLESHOOTING E-2
MAGNUM® 450WC & 650WC
Observe all Safety Guidelines detailed througout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
FUNCTION PROBLEMS
PROBLEMS
(SYMPTOMS)
POSSIBLE CAUSE
RECOMMENDED
COURSE OF ACTION
1. Drive rolls turn, but wire will not
feed or wire feeding is rough.
2. Variable or “hunting” arc.
A. Gun cable kinked and/or twisted.
B. Wire jammed in gun and cable.
C. Incorrect drive rolls and guide
tubes.
D. Gun cable liner dirty.
E. Worn drive rolls.
F. Electrode rusty and/or dirty.
G.Worn or improper size cable
liner.
H. Partially flashed, melted, or
improper size contact tip.
I. Incorrect diffuser
A. Contact tip worn or incorrect size.
B. Worn or undersize ground cables
or poor ground connections.
C. Loose electrode connections.
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service Facility.