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Miller Electric HF-251D-1, HF-251-2 manual Installing Gas Supply, In-Gas-Out

Models: HF-251-2 HF-251D-1

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3-3. Installing Gas Supply

1

6

2

3

5

4

Argon Gas

8

IN-GAS-OUT

To Torch

7

Tools Needed:

1-1/8, 5/8 in

Obtain gas cylinder and chain to running gear, wall, or other station- ary support so cylinder cannot fall and break off valve.

1Cap

2Cylinder Valve

Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve.

3Cylinder

4Regulator/Flowmeter Install so face is vertical.

5Gas Hose Connection

Fitting has 5/8-18 right-hand threads.

6 Flow Adjust

Typical flow rate is 15 cfh (cubic feet per hour).

Make sure flow adjust is closed when opening cylinder to avoid damage to the flowmeter.

7Gas In Fitting

8Gas Out Fitting

Open left side panel.

The Gas In and Gas Out fittings have 5/8-18 right-hand threads. Obtain proper size, type, and length hose and make connections as fol- lows:

Connect hose from shielding gas supply regulator/flowmeter to Gas In fitting.

Connect shielding gas hose from torch to Gas Out fitting.

Close left side panel.

ssb3.3* 5/94 − Ref. 158 697-A / Ref. 098 956-B

OM-611 Page 10

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Miller Electric HF-251D-1, HF-251-2 manual Installing Gas Supply, In-Gas-Out

Contents

Description OM-611Processes From Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information Identifie un message de sécurité particulier − Consignes DE Sécurité − À Lire Avant UtilisationLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LE Bruit peut affecter l’ouïe’EMPLOI Excessif peut Faire Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser LES Pièces Mobiles peuvent cau- ser des blessuresConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques Typical Process Connections − InstallationSpecifications Installing Gas Supply IN-GAS-OUTPower Source Plug Information And Connections Amperage ControlSocket Operator Control Receptacle Information And ConnectionsOperator Control Receptacle Socket Information Connecting To Weld Output Terminals Electrode Electrode OUT Work INPUT/OUTPUTConnecting Input Power − Operation High Frequency SwitchHigh Frequency Selector Switch ControlsHigh Frequency Intensity Control Power Switch And Pilot LightPostflow Timer Shielding Gas− Maintenance & Troubleshooting Routine Maintenance MonthsAdjusting Spark Gaps Troubleshooting Trouble Remedy− Electrical Diagrams Circuit Diagram For 115 Volts ModelCircuit Diagram For 230 Volts Model Welding Processes Requiring High Frequency Incorrect Installation− High Frequency Weld ZoneMetal Building Requirements Correct InstallationMetal Building Amperage Range Gas Type Polarity AC − Argon AC − Argon −Positioning 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 RodReturn To Table Of Contents − Parts List Complete Assembly Part 1 of 2 115V ModelComplete Assembly Part 1 Complete Assembly Part 2 of 2 115V Model Complete Assembly Part 2 Page Page Page Service SupportOwner’s Record Miller Electric Mfg. Co