Hobart Welding Products 180 manual MIG Welding Gmaw Guidelines, Typical MIG Process Connections

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SECTION 9 − MIG WELDING (GMAW) GUIDELINES

9-1. Typical MIG Process Connections

Y Weld current can damage electronic parts in vehicles. Disconnect both battery cables before welding on a vehicle. Place work clamp as close to the weld as possible.

Regulator/

Flowmeter

Wire Feeder/

Power Source

Shielding Gas	Gas Hose

Gun

Work Clamp Workpiece

light mig 5/97 / Ref. 803 715-A

OM-925 Page 31

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Contents Description ProcessesFrom Hobart to You Table of Contents − Parts List 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 About Pacemakers Principal Safety StandardsEMF Information LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − À Lire Avant Utilisation LES Décharges Électriques peuvent être mortellesLE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures gravesLES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut FaireConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques − Definitions − SpecificationsSymbols And Definitions SpecificationsVAC Model Output Amperes Duty Cycle And OverheatingAmperes Output Duty Cycle %Amperage Volt-Ampere CurvesVoltage Installing Work Clamp − InstallationInstalling Welding Gun Changing Polarity Process/Polarity TableInstalling Gas Supply Section Special installation may beDo not move or operate unit where it could tip Installing Wire Spool And Adjusting Hub Tension Electrical Service Guide For 230 VAC ModelHold wire tightly to keep it From unraveling Threading Welding WireControls − OperationWeld Parameter Chart For 115 VAC Model 217 618-A Weld Parameter Chart For 230 VAC Model 217 754-B Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun from unit Replacing Switch And/Or Head Tube Does not run Troubleshooting TableTrouble Remedy Circuit Diagram For 115 VAC Model − Electrical DiagramCircuit Diagram For 230 VAC Model Typical MIG Process Connections − MIG Welding Gmaw GuidelinesSelect Voltage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage aHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Gun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Distortion Troubleshooting − Waviness Of BeadApplication Troubleshooting Guide For Semiautomatic Welding EquipmentWire does not feed Common MIG Shielding GasesWelding arc not stable Wire slipping in drive rolls OM-925 Main Assembly − Parts ListDia Part Description Quantity Dia Part Description Quantity Mkgs 195 H-10 GunOptions Optional Drive RollsSupport ServiceHobart Welding Products Contact your Distributor for