Miller Electric DB17V12R, DB1725RDI25, DB1712RDI25 manual Connecting Torch With Two-Piece Cable

Page 10

B. Connecting Torch With Two-Piece Cable

If applicable, install high-frequency unit.

2

 

4

3

 

 

Torch Without Gas Valve

 

1

 

 

6

7

5

 

8

803 314

 

 

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

5Torch Gas-In Hose

6Torch Power Cable

7Work 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

Torch With Gas Valve

2

9 Gas Valve

Valve controls gas preflow and

4

Tools Needed:

9 6

5/8, 7/8 in

3

postflow. Open valve on torch just before welding.

Preflow is used to purge the imme- diate weld area of atomsphere.

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.

5

7

803 664-A

C. Connecting Torch With Flow-Through Type Connection

If applicable, install high-frequency unit.

2

Y Turn Off welding power

 

source power before install-

 

 

 

 

3

ing torch.

 

4

Obtain the following hose:

 

1 Gas Hose With 5/8-18 Right-

Torch Without Gas Valve

 

 

 

Hand Fittings

 

1

Connections:

 

2

Regulator/Flowmeter

 

 

 

5

3

Gas Cylinder

 

4

Welding Power Source

6

 

 

5

Gas Valve

 

 

 

 

6 One-Piece Torch Cable

 

 

7

Work Clamp

 

Tools Needed:

Connect work clamp to clean, paint-

 

 

free location on workpiece, close to

 

 

weld area.

Use wire brush to clean metal at weld joint area.

Ref. ST-802 540-A

5/8, 7/8 in

7

OM-1600 Page 6

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Contents Processes OM-1600199 525EDescription From Miller to You Table of Contents Page Symbol Usage −SAFETY Precautions for Gtaw Torches − Read Before UsingGtaw Torch Hazards EMF Information About PacemakersExceeding Rated Amperage can damage torch and void warranty − SpecificationsSpecifications Duty CycleInternational Style Connector Assembly − InstallationRequired Torch Parts And Torch Assembly Installing TungstenConnections Connecting TorchConnecting Torch With One-Piece Cable Operating Torch Gas ValveConnecting Torch With Two-Piece Cable Connecting Torch With Flow-Through Type ConnectionTroubleshooting − Maintenance & TroubleshootingRoutine Maintenance Disconnect torch before maintaining HoursEssary Amperage Range Gas Type Polarity 50-150Positioning The Torch − Guidelines for TIG Welding GtawPreparing Tungsten Electrode For Welding Preparing Tungsten For Conventional AC WeldingTungsten Without Filler Rod Torch Movement During WeldingPositioning Torch Tungsten For Various Weld Joints Tungsten With Filler Rod− Parts List Complete Torch AssemblyEnglish 194 ADAPTER, intl style flow through Torch Models With Gas Valve 17V12R Page Page Service SupportOwner’s Record Miller Electric Mfg. Co