OM-251387 Page 27
7-2. Scratch Start TIG Welding Mode - GTAW Process
!
Weld terminals are energized at all
times in Scratch Start TIG welding
mode.
1
Mode Switch
2
Left Display
3
Right Display
4
Adjust Control
Setup
For typical system connections refer to
Section 7-1.
Rotate Mode Switch to SCRATCH START
TIG position as shown.
The open circuit voltage is shown in the Left
Display. Preset amperage is shown in the
Right Display.
Operation
The Adjust Control is used to set desired
preset amperage.
.
If a remote control is used for amper-
age adjustment, the adjustment will
function as a percentage of the preset
amperage.
.
For best results, gently scratch the
tungsten electrode to the work to initi-
ate an arc. To minimize arc flare at the
end of the weld, pull back the electrode
quickly to extinguish the arc.
251142-A
2
3
1
4
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