Miller Electric DB1712RDI25 - Manual (Page 9)

OM-1600 Page 5
3-3. Connecting Torch
A. Connecting Torch With One-Piece Cable
Y Turn Off welding power
source power before install-
ing 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
Operating Torch 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 atomsphere.
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 sec-
ond for every 10 amperes of weld
current. Close valve on torch when
postflow is finished.
6
One-Piece Torch Cable
7 Power Cable Adapter
Connect gas hose and power cable
to adapter before connecting adapt-
er to weld output terminal.
8
Work Clamp
Connect work clamp to clean, paint-
free location on workpiece, close to
weld.
Use wire brush to clean weld joint
area.
9
Foot Control
803 313
If applicable, install high-frequency unit.
Tools Needed:
5/8, 7/8 in
1
2
3
5
Torch Without Gas Valve
4
8 7
6
1
2
3
4
5
6
7 8
Torch With Gas Valve
9
9