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PROBLEMS
(SYMPTOMS)
1. Rough wire feeding or wire not
feeding but drive rolls turning.
2. Variable or "hunting" arc.
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.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
a. Gun cable kinked and/or twisted.
b. Wire jammed in gun and cable.
c. Incorrect position of drive rolls with
grooves.
d. Drive rolls loose.
e. Gun cable dirty.
f. Worn drive roll.
g. Electrode rusty and/or dirty.
h. Worn nozzle or cable liner.
i. Partially flashed or melted contact tip.
j. Incorrect idle roll pressure.
k. Improper liner, tip or guide tube.
a. Wrong size, worn and/or melted
contact tip.
b. Worn work cable or poor work
connection.
c. Loose electrode connections.
d. Wrong polarity.
e. Problem with serial communica-
tions in control cable.
SYNERGIC 7 & 7H
CAUSE
a. Inspect gun cable and replace if
b. Remove wire from gun and cable
c. See Wire Feed Drive Roll and
d. Remove, clean, install and tighten.
e. Clean cable or replace liner.
f. Replace.
g. Replace.
h. Replace.
i. Replace contact tip.
j. Set idle roll pressure per section
k. Install proper equipment.
a. Replace tip - remove any spatter on end of
b. Inspect - Repair or replace as necessary.
c. Be sure electrode lead is tight in wire feeder
d. Check connection at output studs for polari-
e. Make sure control cable connections are
CAUTION
RECOMMENDED
COURSE OF ACTION
necessary.
feed in new wire. Note any
obstructions in gun and cable.
Replace gun and cable if neces-
sary.
Guide Tubs Kits section for proper
installation of drive roll.
on Idle Roll Pressure Setting.
tip.
contact block, gun nozzle and gun tip tight.
ty required by welding process.
tight. Check for consistent WFS. Make sure
parameters on Power Source display, such
as WFS, match those on wire feeder display,
if not, see Problem 14, otherwise try chang-
ing Synergic 7 control board. If problem per-
sists refer to Power Source trouble shooting
information.
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