Manual 0-5406 5-9 SERVICE
FAULT CAUSE REMEDY
7 Dirty weld pool A Electrode contaminated
by contact with work
piece or filler rod
material.
A Clean the electrode by grinding off the
contaminates.
B Work piece surface has
foreign material on it.
B Clean surface.
C Shielding gas
contaminated with air.
C Check shielding gas lines for cuts and
loose fitting or change shielding gas
cylinder.
8 Poor weld finish Inadequate shielding
gas.
Increase shielding gas flow or check
shielding gas line for shielding gas flow
problems.
9 Arc start is not smooth. A Tungsten electrode
is too large for the
welding current.
A Select the right size tungsten electrode.
Refer to Table 5-1 Cigweld Tungsten
Electrode Selection Chart.
B The wrong electrode
is being used for the
welding job.
B Select the right size tungsten electrode
type. Refer to Table 5-5 Cigweld Tungsten
Electrode Selection Chart.
C Shielding gas flow rate
is too high.
C Select the right shielding gas flow rate
for the welding job. Refer to Table 5-5 on
page 5-7.
D Incorrect shielding gas
is being used.
D Select the correct shielding gas.
E Poor work clamp
connection to work
piece.
E Improve connection to work piece.
10 Arc flutters during TIG
welding.
Tungsten electrode
is too large for the
welding current.
Select the right size tungsten electrode.
Refer to Table 5-1 Tungsten Electrode
Current Ranges.
Table 5-6: GTAW (TIG) Welding Problems
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