Lift-Arct Tig With Auto-Cratert And Auto-Stopt - Miller TRAILBLAZER 302 AIR PAK Owner's Manual

6-6. Lift-Arct TIG With Auto-Cratert And Auto-Stopt

Arc Start With Lift-Arc
1
Arc End With Auto-Crater
1
OR
Arc End With Auto-Stop
1
2
2 3
2 3
.
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Arc Start With Lift-Arc TIG
Lift-Arc is used for the DCEN
GTAW process when HF Start
method is not permitted.
Select Lift-Arc at Process/Contac-
tor switch.
Turn gas on.
1 Touch or scratch.
2 Lift at any angle.
Touch
workpiece at weld start point.
Slowly lift electrode. Arc is started
when electrode is lifted.
Maintain shielding gas coverage
and eliminate tungsten and work-
piece contamination by using
Auto-Crater or Auto-Stop to end
the arc.
4
Arc End With Auto-Crater:
.
Remote control is not needed
when using Auto-Crater.
1 While welding.
2 Lift torch slightly to start
Auto-Crater end (current is
reduced).
3 Lower torch. Weld current
ramps down.
4 Shielding gas continues until
shut off.
Arc End With Auto-Stop:
1 While welding.
2 Lift torch to start Auto-Stop.
(Lift higher than that needed
to start Auto-Crater.) Arc
stops.
3 Move torch back down to
maintain gas coverage and
prevent contamination.
tungsten electrode to
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