Lincoln Electric HANDY MIG IM756-A - Manual (Page 24)

E-4 TROUBLESHOOTING E-4
HANDY MIG
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)
Bead is too thin (intermittently).
Bead is too thick (intermittently).
Bead does not penetrate base
metal.
Wire sputters and sticks to work-
piece.
Edge of weld has ragged depres-
sions.
POSSIBLE
CAUSE
1. Travel speed is inconsistent.
Decrease and maintain a con-
stant travel speed.
2. Output heat range is too low.
Set the Low – High Heat Range
switch to High or the Fine Heat
Adjustment to MAX.
1. Travel speed is slow and/or
inconsistent. Increase and main-
tain a constant travel speed.
2. Output heat range is too high.
Set the Low – High Heat Range
switch to Low or the Fine Heat
Adjustment to MIN.
1. Travel speed is inconsistent.
Decrease and maintain a con-
stant travel speed.
2. Output heat range is too low.
Set the Low – High Heat Range
switch to High or the Fine Heat
Adjustment to MAX.
1. The wire is damp. Change to dry
wire. Be sure wire is stored in a
dry location.
2. Wire feed speed (WFS) is too
fast. Reduce WFS.
1. Travel speed is too fast. Reduce
travel speed.
2. WFS is too fast. Reduce WFS.
3. Output heat range is too high.
Set the Low – High Heat Range
switch to Low or the Fine Heat
Adjustment to MIN
RECOMMENDED
COURSE OF ACTION
If all recommended possible areas
of misadjustment have been
checked and the problem persists,
Contact your local Lincoln
Authorized Field Service
Facility.
WELDING PROBLEMS
Observe all Safety Guidelines detailed throughout this manual