Miller Electric DB1725RDI25, DB17V12R manual Connecting Torch With One-Piece Cable, Connections

3-3. Connecting Torch

A. Connecting Torch With One-Piece Cable

If applicable, install high-frequency unit.

Torch Without Gas Valve

4

2

3

1

6

5

8 7

9

Torch With Gas Valve 4

2

3

1

6

5

8 7

YTurn Off welding power source power before install- ing torch.

Obtain the following hose:

1Gas Hose With 5/8-18 Right- Hand Fittings

Connections:

2Regulator/Flowmeter

3Gas Cylinder

4Welding Power Source

5Gas 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.

6One-Piece Torch Cable

7Power 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

Tools Needed:

9 5/8, 7/8 in

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