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B. Connecting Air-Cooled Torch With Two-Piece Cable
Torch Without Gas Valve
Torch With Gas Valve
C. Connecting Air-Cooled Torch With Flow-Through Type Connection
Torch Without Gas Valve
4
6
7
8
4
−
6
9
7
4
6
7
2
3
1
5
2
3
5
2
3
1
5
Tools Needed:
!
Turn Off welding power source
power before installing torch.
.
If applicable, install high-frequen-
cy unit.
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
Torch Gas-In Hose
6
Torch Power Cable
7
Work Clamp
Connect work clamp to a clean, paint-
free location on workpiece, close to
weld area.
Use wire brush to clean weld joint
area.
8
Foot Control
803314
9
Gas Valve
Valve controls gas preflow and post-
flow. Open valve on torch just before
welding.
Preflow is used to purge the immedi-
ate weld area of atmosphere.
Postflow is required to cool tungsten
and weld, and to prevent contamina-
tion of tungsten and weld. After weld-
ing, leave valve open about 1 second
for every 10 amperes of weld current.
Close valve on torch when postflow is
finished.
Tools Needed:
803664-A
!
Turn Off welding power source
power before installing torch.
.
If applicable, install high-frequen-
cy unit.
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
Located on back of machine.
6
One-Piece Torch Cable
7
Work Clamp
Connect work clamp to clean, paint-
free location on workpiece, close to
weld area.
Use wire brush to clean metal at weld
joint area.
5/8, 7/8 in.
5/8, 7/8 in.
804330-A
OM-251981 Page 9