Hobart Welding Products OM-947 212 149D manual Installing Contact Tip And Nozzle

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4-7. Installing Contact Tip And Nozzle

YTurn off welding power source.

1 Nozzle Remove nozzle. 2 Contact Tip 3 Tip Adapter

Thread welding wire through gun (see

Section 4-8).

Slide contact tip over wire and tighten tip into tip adapter.

Install nozzle.

Flux Nozzle

Use with flux cored wire only. Narrow design allows access in tight spaces and provides better visibility of puddle during welding.

Push nozzle over contact tip and adapter until it is seated onto adapter. Contact tip will be exposed approximately 7/16 in (11.3 mm) when installed properly.

MIG Nozzle

Use with solid or flux cored wire.

Push nozzle over contact tip and adapter until it is seated onto adapter. End of contact tip will be flush with end of nozzle when installed properly.

Tools Needed:

Ref. 804 241-A

OM-947 Page 15

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Contents Description ProcessesFile Flux Cored Fcaw From Hobart to You Table of Contents Warranty Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia 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 DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéSpecifications − SpecificationsDuty Cycle And Overheating Voltage − InstallationInstalling Work Clamp Volt-Ampere CurvesChanging Polarity Process/Polarity TableTools Needed 11/16, 1-1/8 Installing Gas SupplyShielding Gas Tools Needed Installing Wire Spool And Adjusting Hub TensionDo not move or operate unit where it could tip Turn off welding power source Installing Contact Tip And NozzleReinstall tip adapter, if applicable, contact tip Threading Welding Wire150 mm Pull and hold wire cut off end Be sure that wire is positionedLoad − OperationControls Operating The GunWeld Parameter Chart 210 Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload 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 Circuit Diagram − Electrical DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesTypical MIG Process Connections Select Voltage Typical Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Slow Normal Fast Conditions That Affect Weld Bead ShapeShort Normal Long ShortNormalLongGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Wire does not feed Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Troubleshooting Guide For Semiautomatic Welding EquipmentMain Assembly − Parts ListOptional Pkg 225− See Table Pkg209 195 Hub Kit For 8 in Wire SpoolWeatherproof Nylon Page Page Page Support ServiceAssistance Hobart Welding Products Contact your Distributor for