Lift-Arct Tig With Auto-Stopt - Miller Big Blue 350 PipePro Owner's Manual

6-4. Lift-Arct TIG With Auto-Stopt

Arc Start With Lift-Arc
1
Arc End With Auto-Stop
1
Notes
WELD POSITION:
WELD JOINT
TYPES
GROOVE
FILLET
Ref. AWS/ANSI D1.1
2
2 3
FLAT HORIZONTAL
BUTT
BUTT
1G
2G
T−JOINT
1F
VERTICAL
BUTT
3G
T−JOINT
2F
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 TIG at Process/
Contactor switch.
Turn gas on.
1 Touch or scratch.
2 Lift at any angle.
Touch tungsten electrode
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-Stop to end the arc.
Arc End With Auto-Stop:
1 While welding.
2 Lift torch to start Auto-Stop.
Arc stops.
3 Move torch back down to
maintain gas coverage and
prevent contamination.
WM Marketing
OVERHEAD
BUTT
4G
T−JOINT
4F
T−JOINT
3F
Ref. 804 248-A
OM-244 620 Page 33
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