Sequence Of Piercing Operation - Hobart AirForce 625 Manual

4-7. Sequence Of Piercing Operation

Connect work clamp to a clean, paint-free
location on workpiece, as close to cutting
area as possible.
°
90
Rotate torch to upright position
°
approximately 90 to surface.
When arc has pierced through
workpiece, start cutting.
.
Set air pressure to 75 PSI
(517 kPa) for cutting.
°
90
°
Maintain approximately 90 torch
position to surface, and continue
cutting.
The pilot arc starts immediately
when trigger is pressed.
Hold torch at an angle to the
workpiece. Raise trigger lock and
press trigger. Pilot arc starts.
Release trigger. Postflow continues for
approx. 20 seconds after releasing trigger;
arc can be instantly restarted during postflow
by raising trigger lock and pressing trigger.
OM-926 Page 21
801 400-B