Installing Contact Tip And Nozzle | Hobart Welding Products 125

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5-8. Installing Contact Tip And Nozzle

! Turn off welding power source.

1Nozzle Remove nozzle.

2Contact Tip

3Tip Adapter

Thread welding wire through gun (see Section 5-9).

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

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Hobart Welding Products 125 manual Installing Contact Tip And Nozzle, Turn off welding power source

Contents

Description ProcessesFile Flux Cored Fcaw From Hobart to You Protect Your Investment Table of Contents 10-1 10-2 Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burn Welding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyes Falling Equipment can injure Welding Wire can injureFire or Explosion hazard Moving Parts can injure EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical Devices UNE Décharge Électrique peut entraîner la mort Symboles utilisésIndique des instructions spécifiques LES Fumées ET LES GAZ peuvent être dangereux LES Pièces Chaudes peuvent provoquer des brûluresLE Soudage peut provoquer un incendie ou une explosion Risque D’INCENDIE OU LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’ÉQUIPEMENT peut provoquer des blessures LES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLes Pièces Mobiles peuvent causer des blessures LE Soudage À L’ARC risque de provoquer des interférences Informations relatives aux CEM Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-947 Specifications − SpecificationsSymbols And Definitions − Definitions Volt-Ampere Curves WarrantyDuty Cycle And Overheating Can damage unit or gun and void Installing Work Clamp − InstallationSlide insulating grips over handles Tools Needed OM-947 Process/Polarity Table Changing Polarity Installing Gas Supply Tools Needed 11/16, 1-1/8 Shielding Gas Only applies to units equipped with Installing Wire Spool And Adjusting Hub TensionOptional hub kit Serial Number And Rating Label Location Selecting a Location And Connecting 115 Volt Input PowerMake this installation Section Installing Contact Tip And Nozzle Turn off welding power source Threading Welding Wire Hold wire tightly to keep it from unraveling Operating The Gun − OperationControls Load Weld Parameter Chart Overload Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Drive Motor Protection Changing Drive Roll Or Wire Inlet Guide Retaining Knob Opening Turn Off power before replacing contact tip Replacing Gun Contact Tip Thread wire according to Cleaning Gun LinerHold wire tightly to keep it From unraveling. Secure Tools Needed Head Tube Mm / 10 mm Remove black sleeving from end of replacement linerReplacing Gun Liner Tube. Separate gun handle halves 10 mm Power source see Section Troubleshooting TableSecure power cord plug in receptacle see Section Trouble Remedy − Electrical Diagram Circuit Diagram Typical Fcaw Process Connections − FCAW/GMAW Welding GuidelinesTypical Gmaw MIG Process Connections Amperage Typical Control SettingsWire Size Amperage Range Select Voltage Holding And Positioning Welding Gun End View of Work Angle Short Normal Long Conditions That Affect Weld Bead ShapeSlow Normal Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Porosity Troubleshooting − Excessive SpatterPossible Causes Corrective Actions Troubleshooting − Lack Of Penetration Troubleshooting − Excessive PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Distortion Troubleshooting − Burn-ThroughTroubleshooting − Waviness Of Bead Base metal to move Application Troubleshooting Guide For Semiautomatic Welding EquipmentCommon Gmaw MIG Shielding Gases Fillet Gas hose in gun and cable assembly Gas nozzle plugged Clean or replace gas nozzleOpen gas valve at cylinder and adjust flow rate Loose or broken wires to gas solenoid Consumables − ACCESSORIES/CONSUMABLESAccessories Pkg Material Thickness Reference Chart Work like a Pro Support ServiceAssistance Contact your Distributor for Hobart Welding Products

Hobart Welding Products 125 Installing Contact Tip And Nozzle, Turn off welding power source

Models: 125

5-8. Installing Contact Tip And Nozzle

! Turn off welding power source.

Flux Nozzle

MIG Nozzle

OM-947 Page 18