The welding arc is variable or “hunting, Troubleshooting and repair, Caution – Lincoln Electric LN-8 SVM132-A User Manual
Page 59
F-9
TROUBLESHOOTING AND REPAIR
F-9
LN-8
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric
Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353.
CAUTION
The welding arc is variable or
“hunting”.
Poor arc striking with sticking or
“blast offs”. The weld bead may
also be ropey and display weld
porosity.
1. Make sure the welding parame-
ters are correct for the welding
procedure being used.
2. Check the welding cables for
loose or faulty connections.
3. The gun cable may be faulty.
Check or replace.
4. The gun contact tip may be
worn. Check or replace.
5. The welding power supply may
be faulty. Check or replace.
1. Make sure the welding parame-
ters and techniques are correct
for the welding procedure being
used.
2. Check the welding cables for
loose or faulty connections.
3. The gun cable may be faulty.
Check or replace.
4. The gun contact tip may be
worn. Check or replace.
5. The welding power source may
be faulty. Check or replace.
1. Put the power source in
“Machine Control” and check if
the welding performance
improves. If the problem is
resolved, check or replace the
control cable and/or check the
output control in the LN-8.
2. Perform the Drive Motor Test.
1. Put the power source in
“Machine Control” and check if
welding performance improves.
If the problem is resolved, check
or replace the control cable
and/or check the output control
in the LN-8.
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
PROBLEMS
(SYMPTOMS)
Observe all Safety Guidelines detailed throughout this manual
WELDING PROBLEMS