ESAB Origo TA23 Instruction Manual page 5

GB
Slope down
TIG welding uses "slope down", by which the current falls 'slowly' over a controlled
time, to avoid craters and/or cracks. when a weld is finished.
Gas post-flow
This controls the time during which shielding gas flows after the arc is extinguished.
HF
The HF function strikes the arc by means of a spark from the electrode to the
workpiece as the electrode is brought closer to the workpiece.
LiftArct
With LiftArctthe arc strikes when the tungsten electrode is brought into contact with
the workpiece and then lifted away from it.
Striking the arc with the LiftArc functiont. Step 1: the electrode is touched on to the workpiece. Step
2: the trigger switch is pressed, and a low current starts to flow. Step 3: the welder lifts the electrode
from the workpiece: the arc strikes, and the current rises automatically to the set value.
2 stroke
Gas pre-flow
Functions when using 2 stroke control of the welding torch.
In the 2 stroke control mode, pressing the TIG torch trigger switch (1) starts gas
pre-flow (if used) and strikes the arc. 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.
bi15d1ea
Slope Slope down
up
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Gas post-flow