Hobart Welding Products OM-947 212 149D Replacing Gun Contact Tip, Turn off welding power source

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6-5. Replacing Gun Contact Tip

Tools Needed:

Y Turn off welding power source.

1 Nozzle Remove nozzle.

2 Contact Tip

3 Tip Adapter

Cut off welding wire at contact tip. Remove contact tip from tip adapter, and install new contact tip. Reinstall nozzle.

Ref. 804 241-A

OM-947 Page 22

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Contents File Flux Cored Fcaw ProcessesDescription From Hobart to You Table of Contents Warranty 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 Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesDuty Cycle And Overheating − SpecificationsSpecifications Volt-Ampere Curves − InstallationInstalling Work Clamp VoltageProcess/Polarity Table Changing PolarityShielding Gas Installing Gas SupplyTools Needed 11/16, 1-1/8 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 sourceBe sure that wire is positioned Threading Welding Wire150 mm Pull and hold wire cut off end Reinstall tip adapter, if applicable, contact tipOperating The Gun − OperationControls LoadWeld Parameter Chart 210 Overload Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Replacing Gun Contact Tip Cleaning Gun Liner Loosen liner setscrew Replacing Gun LinerHead Mm / 10 mm Tube 10 mm Does not run Troubleshooting TableTrouble Remedy − Electrical Diagram Circuit DiagramTypical MIG Process Connections − Wire Welding GuidelinesTypical Fcaw Process Connections Thickness to Amperage a Typical Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun ShortNormalLong Conditions That Affect Weld Bead ShapeShort Normal Long Slow Normal FastGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Troubleshooting Guide For Semiautomatic Welding Equipment Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Wire does not feed− Parts List Main AssemblyOptional Pkg 225− See Table PkgWeatherproof Nylon 195 Hub Kit For 8 in Wire Spool209 Page Page Page Assistance ServiceSupport Contact your Distributor for Hobart Welding Products