Welding Problems - Lincoln Electric POWER FEED 10M SINGLE/DUAL SVM172-A Service Manual

F-10
POWERFEED 10M
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
The gun tip seizes in diffuser.
Poor arc striking with sticking or
"blast-offs". The weld bead may
be narrow and ropy with weld
porosity.
The arc is variable and/or hunting.
The power source, Control Box and
drive units seem to be operating
properly.
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 at 1-888-935-3877 for electrical troubleshooting assistance before
you proceed.
TROUBLESHOOTING & REPAIR
POSSIBLE AREAS OF
MISADJUSTMENT(S)

WELDING PROBLEMS

1. The tip may be overheating due
to prolonged or excessive high
current and /or duty cycle. Do
not exceed the current and duty
cycle rating of the gun.
2. A light application of high tem-
perture anti-seize lubricant (such
as Graphite Grease) may be
applied to tip threads.
1. Make sure the weld procedures
are correct for the process being
used. Check gas, wire feed,
speed and arc voltage.
2. Remove the gun liner and check
the rubber seal for any sign of
deterioration or damage. Be
sure the set screw in the con-
nector block is in place and
tightened against the liner bush-
ing.
3. Check the welding cables for
loose or faulty connections.
1. Check the contact tip. It may be
worn or the wrong size for the
electrode wire being used.
2. Check for loose or faulty welding
cables and connections.
3. Make sure the procedures are
correct for the process being
used. Check gas, wire feed
speed and arc voltage.
CAUTION
POWER FEED 10M SINGLE/DUAL
RECOMMENDED
COURSE OF ACTION
1. Contact the Lincoln Electric
Service Department at
1.888.935.3877
1. Contact the Lincoln Electric
Service Department at
1.888.935.3877
1. Contact the Lincoln Electric
Service Department
1.888.935.3877
F-10
at