Linkoln Electric Magnum PRO 100SG Manuel De L'opérateur page 22

MAGNUM PRO 100SG
Observe all Safety Guidelines detailed throughout this manual
PROBLEM
(SYMPTOMS)
Intermittent wire feed when
trigger is pulled.
Frequent occurrence of
contact tip burnback.
Poor weld bead appearance
(porosity or dull gray
oxidized surface).
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Lincoln Authorized Service Facility for technical troubleshooting assistance before you proceed.
WWW.LINCOLNELECTRIC.COM/LOCATOR
POSSIBLE AREAS OF
MISADJUSTMENT(S)
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. Idle roll assembly is installed backwards.
6. Liner assembly is shaving wire.
1. Improper welding parameters or
technique. (Example: CTWD (Contact Tip
to Work Distance) is incorrect.
2. Wire may be feeding intermittently.
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.
RECOMMENDED COURSE OF ACTION
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. Install properly. (See Maintenance Section)
6. Check that wire is properly aligned at liner inlet;
realign gun tube with wire drive. (See Correcting
Wire Shaving Issues Maintenance Section)
1. See Operation Section for proper Welding
information.
2. See symptoms on intermittent or sluggish wire feed.
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.
F-3
TROUBLESHOOTING