227 949-B | Hobart Welding Products OM-227 978B manual

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227 949-B

OM-227 978 Page 21

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Hobart Welding Products OM-227 978B manual 227 949-B

Contents

Processes OM-227 978BDescription 2007−04 From Hobart to You Table of Contents − MIG Welding Gmaw Guidelines − Parts ListTypical MIG Process Connections Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can kill Welding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or kill California 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 Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionDES Pièces Chaudes peuvent provoquer des brûlures graves LE Bruit peut endommager l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessures En ce qui concerne les stimulateurs cardiaques Boulevard, Rexdale, Ontario, Canada M9W 1R3 téléphone Symbols And Definitions − SpecificationsSpecifications − Definitions Volt-Ampere Curves Duty Cycle And OverheatingAmperes Output Installing Welding Gun − InstallationInstalling Work Clamp Changing Polarity Process/Polarity Table Installing Gas Supply Selecting a Location And Connecting Input Power Installing Wire Spool And Adjusting Hub Tension Electrical Service GuideTools Needed Installing Contact Tip And Nozzle Appropriate setting Connecting Optional Spool Gun Threading Welding Wire Controls − Operation Weld Parameter Chart For 230 VAC Model 227 949-B Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor Protection Months Turn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip 030/.035 Groove Stamped 023/.025 Groove Stamped .030/.035 Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting Table OM-227 978 Circuit Diagram − Electrical Diagram 227 951-B Typical MIG Process Connections − MIG Welding Gmaw Guidelines Wire Size Amperage Range Typical MIG Process Control SettingsThickness to Amperage a Amperage Holding And Positioning Welding Gun Push Conditions That Affect Weld Bead ShapePerpendicular Drag Short Normal Long Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Porosity Troubleshooting − Excessive SpatterTroubleshooting − Excessive Penetration Possible Causes Corrective Actions Troubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting − Distortion Troubleshooting − Waviness Of BeadCommon MIG Shielding Gases Weld bead Troubleshooting Guide For Semiautomatic Welding Equipment OM-227 978 Main Assembly − Parts List Dia Part Dia Part Mkgs Description Quantity 231 H-14 Gun Options Optional Drive RollsConsumables Page Work like a Pro Support ServiceAssistance Hobart Welding Products Contact your Distributor for