Specifications

OM-1600 Page 6
B. Connecting Torch With Two-Piece Cable
Ref. ST-802 540-A
Turn Off welding power source, and
disconnect input power before in-
stalling torch.
Obtain the following hose:
1 Gas Hose With 5/8-18 Right-
Hand Fittings
Connections:
2 Regulator/Flowmeter
3 Gas Cylinder
4 Welding Power Source
5 Gas Valve
Valve controls gas preflow and
postflow. Open valve on torch just
before welding.
Preflow is used to purge the imme-
diate weld area of atomsphere.
Preflow also aids in consistent arc
starting.
Postflow is required to cool tung-
sten and weld, and to prevent con-
tamination of tungsten and weld. Af-
ter welding, leave valve open about
1 second for every 10 amperes of
weld current. Close valve on torch
when postflow is finished. Increase
postflow time if tungsten or weld is
dark in appearance
6 Torch Gas-In Hose
7 Torch Power Cable
8 Work Clamp
Connect work clamp to a clean,
paint-free location on workpiece, as
close to weld area as possible.
Use wire brush or sandpaper to
clean metal at weld joint area.
If applicable, install high-frequency unit.
Tools Needed:
5/8, 7/8 in
Torch With Gas Valve
5
6
7
8
4
2
3
1
C. Connecting Torch With Flow-Through Type Connection
Turn Off welding power source, and
disconnect input power before in-
stalling torch.
Obtain the following hose:
1 Gas Hose With 5/8-18 Right-
Hand Fittings
Connections:
2 Regulator/Flowmeter
3 Gas Cylinder
4 Welding Power Source
5 Gas Valve
6 One-Piece Torch Cable
7 Work Clamp
Connect work clamp to clean, paint-
free location on workpiece, as close
to weld area as possible.
Use wire brush or sandpaper to
clean metal at weld joint area.
Ref. ST-802 540-A
If applicable, install high-frequency unit.
Tools Needed:
5/8, 7/8 in
1
2
3
4
5
6
7
Torch Without Gas Valve