Tweco 200 ACDC Arcmaster(April2006) - Manual (Page 51)

ARCMASTER 200 AC/DC
April 13, 2006 10-3
Description Possible Cause Remedy
11 Welding arc cannot
be established.
A Work clamp is not connected to
the work piece or the work/torch
leads are not connected to the
right welding terminals.
A Connect the work clamp to the
work piece or connect the
work/torch leads to the right
welding terminals.
B Torch lead is disconnected. B Connect it to the ‘
−‘ terminal.
C Gas flow incorrectly set, cylinder
empty or the torch valve is OFF. C Select the right flow rate,
change cylinders or turn torch
valve ON.
12 Arc start is not
smooth.
A Tungsten electrode is too large
for the welding current.
A Select the right size electrode.
Refer to Basic TIG
Welding Guide.
B The wrong electrode is being
used for the welding job.
B Select the right electrode type.
Refer to Basic TIG
Welding Guide.
C Gas flow rate is too high. C Select the correct rate for the
welding job.
Refer to Basic TIG
Welding Guide.
D Incorrect shielding gas is
being used.
D Select the right shielding gas.
Refer to Basic TIG
Welding Guide.
E Poor work clamp connection
to work piece.
E Improve connection to
work piece.
Table 10-1 (continued): TIG Welding Problems