Tig Welding - ESAB Caddyt Arc 150i Service Manual

TIG WELDING

During TIG welding, the return cable must be connected to (+) and the TIG torch to (--). If
they are connected in reverse, the tungsten electrode will melt.
Settings
Function
2/4 stroke
HF / LiftArct
Slope--down time
Gas post--flow time
Current
2 stroke
Functions when using 2 stroke control of the welding torch.
In the 2 stroke control mode, pressing the trigger switch starts gas pre--flow (if used) and
strikes the arc (1). The current rises to the set value (as controlled by the slope up function,
if in operation). Releasing the trigger switch (2) reduces the current (or starts slope down if
in operation) and extinguishes the arc. Gas post--flow follows if it is in operation.
4 stroke
Functions when using 4 stroke control of the welding torch.
In the 4 stroke control mode, pressing the trigger switch starts gas pre--flow (if used) (1). At
the end of the gas pre--flow time, the current rises to the pilot level (a few ampere), and the
arc is struck. Releasing the trigger switch (2) increases the current to the set value (with
slope up, if in use). At the end of welding, the welder presses the trigger switch again (3),
which reduces the current to pilot level again (with slope down, if in use). Releasing the
switch again (4) extinguishes the arc and starts gas post--flow.
HF
The HF function strikes the arc by means of a spark from the electrode to the workpiece.
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Setting range
2 stroke or 4 stroke
HF or Liftarct
0 -- 10 s
0 -- 25 s
3 -- 150 A
In steps of
--
--
0.1 s
0.1 s
1 A
- - 63 - -
OrigoTig 150
Default value
2 stroke
LiftArct
1.0 s
2.0 s
60 A
S0740 800 161/E061205/P66