Hobart Welding Products OM-925 217 694A manual

SECTION 8 − MIG WELDING (GMAW) GUIDELINES

8-1. 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

Shielding Gas

Wire Feeder/

Power Source

Gas Hose

Gun

Work Clamp Workpiece

light mig 5/967 / Ref. 803 715-A

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Hobart Welding Products OM-925 217 694A manual MIG Welding Gmaw Guidelines, Typical MIG Process Connections

Contents

Description OM-925Processes From Hobart to You Table of Contents Options and Accessories Warranty Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding Hazards Buildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyes California Proposition 65 Warnings About Pacemakers Principal Safety StandardsEMF Information − Consignes DE Sécurité − À Lire Avant Utilisation Identifie un message de sécurité particulier LE 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 graves LES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut Faire Consignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques VAC Model − SpecificationsSpecifications VAC Model Output Amperes Duty Cycle And OverheatingAmperes Output Duty Cycle % Voltage Volt-Ampere Curves Installing Welding Gun Installing Work Clamp − Installation Changing Polarity Process/Polarity Table Installing Gas Supply Is required = GND/PE Do not move or operate unit where it could tip Installing Wire Spool And Adjusting Hub Tension Electrical Service Guide For 230 VAC Model Hold wire tightly to keep it From unraveling Threading Welding Wire Controls − Operation Steel Weld Parameter Chart For 115 VAC Model Inch 20 ga 18 ga 16 ga 11 ga Weld Parameter Chart For 230 VAC Model 18 ga 16 ga 11 ga 048 060 Inch Wire Welding Package Overload Protection Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Disconnect power before maintaining Replacing 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 Trouble Remedy Troubleshooting Table Circuit Diagram For 115 VAC Model − Electrical Diagram Circuit Diagram For 230 VAC Model Typical MIG Process Connections − MIG Welding Gmaw Guidelines Select Voltage Typical MIG Process Control SettingsWire Size Amperage Range Thickness to Amperage a Holding 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 Penetration Troubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Distortion Troubleshooting − Waviness Of Bead Application Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases Welding arc not stable Wire slipping in drive rolls Return To Table Of Contents Main Assembly − Parts List Dia Part H-10 Gun 195 Optional Drive RollsOptions Page Support Service Hobart Welding Products Contact your Distributor for