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SPOOL GUN PROBLEMS
Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
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 1-888-935-3877.
CAUTION
Intermittent wire feed when the
Spool Gun trigger is pulled.
1. Wire is mechanically binding
along its feed path inside gun.
2. Drive roll has become loose on
hub and output shaft.
3. Drive roll has become galled
with aluminum.
4. Wire has become kinked along
its feed path.
5. Liner assembly is shaving
wire.
1. Check that wire is properly
aligned inside gun.
2. Check that drive roll is
securely fastened in place by
SHCS (socket head cap
screw); replace hub and twist-
lock if worn.
3. Remove and then clean or
replace drive roll. (See
Maintenance Section).
4. Manually pull wire slowly thru
gun until unkinked wire
emerges.
5. Check that wire is properly
aligned at liner inlet; realign
gun tube with wire drive. (See
Correcting Wire Shaving
Issues Maintenance Section)
Frequent occurrences of contact
tip burnback when using the
Spool Gun.
1. Improper welding parameters
or technique. ( Example:
CTWD (Contact Tip to Work
Distance) is incorrect.
2. Wire may be feeding
intermittently.
1. See Operation Section for
proper Welding information.
2. See symptoms on intermittent
or sluggish wire feed.
Poor weld bead appearance
(porosity or dull grey oxidized
surface) When using the Spool
Gun.
1. No gas flow.
2. Low gas flow.
3. Improper or contaminated
shielding gas.
4. Welding in a windy
environment.
5. Improper electrode polarity.
6. Improper welding parameters
or technique.
1. See symptom “Low or no gas
flow”
2. See symptom “Low or no gas
flow”
3. Check that the gas supply’s
labeling reads 100% argon.
Temporarily use alternate,
known gas supply and check
for appearance improvement.
4. Erect a wind shield or move to
a non-windy location before
welding.
5. Reconnect machine’s welding
output to electrode positive
polarity.
6. See Operation Section for
information.
TROUBLESHOOTING & REPAIR
F-9 F-9
COMPACT WIRE WELDERS
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