Hobart Welding Products OM-947 212 149D manual Installing Gas Supply, Tools Needed 11/16, 1-1/8

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4-4. Installing Gas Supply

NOTE

This Section only applies to MIG units or units equipped with MIG kit.

Tools Needed:

11/16, 1-1/8 in

6

Obtain gas cylinder and chain to running gear, wall, or other stationary 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

4

5 7

Install regulator/flowmeter to cylinder valve. Be sure that gauge face is vertical for viewing and adjusting.

5Regulator/Flowmeter Gas Hose Connection

6Welding Power Source Gas Hose Connection

Connect gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source.

1

2

3

Shielding

Gas

802 028 / Ref. 803 379-A

7 Flow Adjust

Turn flow adjust screw to increase or decrease gas flow. Flow rate should be set when gas is flowing through welding power source and welding gun. Turn Range switch to Purge or Fan Only position. Press gun trigger to start gas flow. Typical flow rate is 20 cfh (cubic feet per hour). Check wire manufacturer’s recommended flow rate.

OM-947 Page 12

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Contents Description ProcessesFile Flux Cored Fcaw From Hobart to You Table of Contents Warranty Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique un message de sécurité particulier LE Soudage peut provoquer un Incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesSpecifications − SpecificationsDuty Cycle And Overheating − Installation Installing Work ClampVolt-Ampere Curves VoltageProcess/Polarity Table Changing PolarityTools Needed 11/16, 1-1/8 Installing Gas SupplyShielding Gas Installing Wire Spool And Adjusting Hub Tension Tools NeededDo not move or operate unit where it could tip Installing Contact Tip And Nozzle Turn off welding power sourceThreading Welding Wire 150 mm Pull and hold wire cut off endBe sure that wire is positioned Reinstall tip adapter, if applicable, contact tip− Operation ControlsOperating The Gun LoadWeld Parameter Chart 210 − Maintenance &TROUBLESHOOTING Routine MaintenanceOverload Protection Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Replacing Gun Contact Tip Cleaning Gun Liner Head Mm / 10 mm Tube Replacing Gun LinerLoosen liner setscrew 10 mm Trouble Remedy Troubleshooting TableDoes not run − Electrical Diagram Circuit DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesTypical MIG Process Connections Typical Control Settings Wire Size Amperage RangeThickness to Amperage a Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Short Normal LongShortNormalLong Slow Normal FastGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Spatter Troubleshooting − PorosityTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionTroubleshooting Guide For Semiautomatic Welding Equipment Wire does not feed− Parts List Main AssemblyOptional 225 − See TablePkg Pkg209 195 Hub Kit For 8 in Wire SpoolWeatherproof Nylon Page Page Page Support ServiceAssistance Contact your Distributor for Hobart Welding Products