Lincoln Electric IM734 LN-15 WIRE FEEDER - Manual (Page 25)

E-3 TROUBLESHOOTING E-3
LN-15 CONTROL CABLE MODEL
Observe all Safety Guidelines detailed throughout 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
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENTS(S)
RECOMMENDED
COURSE OF ACTION
No output, no display.
The actual wire feed speed does not
match the setting on the display.
The arc burns back to the tip.
Porosity in the weld.
1. The power source is not turned
on.
2. The control cable is not connected
or damaged.
1. The LN-15 is set for constant cur-
rent “ CC ” welding instead of con-
stant voltage “ CV ” welding.
1. The spool of electrode is tangled.
2. The electrode and work leads are
reversed (welding with the wrong
polarity.)
3. The liner is clogged.
4. The contact tip is worn.
5. The wire drive tension is improp-
erly set.
1. The part being welded is wet, dirty
or rusty.
2. The electrode being used is wet,
dirty or rusty.
3. There is insufficient shielding gas
flow from possible cuts in the gas
hose
4. There is moisture or water in the
shielding gas line.
5. There is too much shielding gas
6. There is too much wind or drafts.
7. The arc voltage is set too high.
8. The wrong shielding gas is being
used.
If all recommended possible areas of
misadjustment have been checked
and the problem persists,
Contact
your local Lincoln Authorized
Field Service Facility.
WELDING ISSUES