ESAB ET 180iP Instruction Manual page 23

5 OPERATION
LiftArc™
The LiftArc™ function initiates the arc when the tungsten electrode is brought into
contact with the workpiece, the trigger switch is pressed, and the tungsten electrode is
lifted away from the workpiece. In order to minimize the risk of tungsten contaminations
the start current is very low and will slope up to the set current (controlled by the slope
up function).
2-stroke
In 2-stroke mode, press the TIG torch trigger switch (1) to start the shielding gas flow
and iniate the arc. The current slopes up to the set current value. Release the trigger
switch (2) to start to slope down the current and terminate the arc. The shielding gas
will continue to flow in order to protect the weld and the tungsten electrode.
A = Gas pre flow
B = Slope up
C = Slope down
D = Gas post flow
4-stroke
In 4-stroke mode, press the TIG torch trigger switch (1) to start shielding gas flow and
initiate the arc at a pilot level. Release the trigger switch (2) to slope up the current to
the set current value. To stop the welding, press the trigger switch again (3). The
current will slope down to the pilot level again. Release the trigger switch (4) to
terminate the arc. The shielding gas will continue to flow in order to protect the weld
and the tungsten electrode.
A = Gas pre flow
B = Slope up
C = Slope down
D = Gas post flow
Gas pre flow
The gas pre flow function controls the time during which shielding gas flows before the
arc is initiated.
Gas post flow
The gas post flow function controls the time during which shielding gas flows after the
arc is terminated.
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