DocLib_42_0-4905 ArcMaster 400MST CE.pdf - Victor Technologies ...

Description Possible Cause Remedy
8 Electrode melts or
oxidizes when an arc
is struck.
A No gas flowing to
welding region.
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A Check the gas lines for kinks
or breaks and gas cylinder
contents.
B Torch is clogged with dust. B Clean torch.
C Gas hose is cut. C Replace gas hose.
D Gas passage contains D Disconnect gas hose from
impurities.
torch then raise gas pressure
and blow out impurities.
E Gas regulator turned OFF. E Turn ON.
F Torch valve is turned OFF. F Turn ON.
G The electrode is too small for G Increase electrode diameter or
the welding current.
reduce the welding current.
H WAVE BALANCE is set above H Reduced WAVE BALANCE to
50%.
below 50% or increase the
electrode size.
9 Poor weld finish. Inadequate shielding gas. Increase gas flow or check
gas line for gas flow
problems.
10 Arc flutters during A Tungsten electrode is too A Select the right size electrode.
TIG welding.
large for the welding current. Refer to Basic TIG Welding
guide.
B Absence of oxides in the B Refer Basic TIG Welding
weld pool.
Guide for ways to reduce arc
flutter.
11 Welding arc cannot A Work clamp is not connected A Connect the work clamp to the
be established. to the work piece or the work piece or connect the
work/torch leads are not work/torch leads to the right
connected to the right welding
terminals.
welding terminals.
B Torch lead is disconnected. B Connect it to the ‘−‘ terminal.
C Gas flow incorrectly set, C Select the right flow rate,
cylinder empty or the torch change cylinders or turn torch
valve is OFF.
valve ON.