Hobart Welding Products OM-925 217 694A manual Options and Accessories Warranty

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TABLE OF CONTENTS

SECTION 8 − MIG WELDING (GMAW) GUIDELINES		31
8-1. Typical MIG Process Connections		31
8-2. Typical MIG Process Control Settings		32
8-3.	Holding And Positioning Welding Gun	33
8-4.	Conditions That Affect Weld Bead Shape	34
8-5.	Gun Movement During Welding	35
8-6.	Poor Weld Bead Characteristics	35
8-7.	Good Weld Bead Characteristics	35
8-8.	Troubleshooting − Excessive Spatter	36
8-9.	Troubleshooting − Porosity	36
8-10.	Troubleshooting − Excessive Penetration	36
8-11.	Troubleshooting − Lack Of Penetration	37
8-12.	Troubleshooting − Incomplete Fusion	37
8-13.	Troubleshooting − Burn-Through	37
8-14.	Troubleshooting − W aviness Of Bead	38
8-15.	Troubleshooting − Distortion	38
8-16.	Common MIG Shielding Gases	39
8-17.	Troubleshooting Guide For Semiautomatic Welding Equipment	39
SECTION 9 − PARTS LIST		42
OPTIONS AND ACCESSORIES
WARRANTY

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Contents Processes OM-925Description From Hobart to You Table of Contents Options and Accessories Warranty Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings EMF Information Principal Safety StandardsAbout Pacemakers Identifie un message de sécurité particulier − Consignes DE Sécurité − À Lire Avant UtilisationLE Soudage peut causer un incen- die ou une explosion LES Particules Projetées peu- vent blesser les yeuxLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresInformation sur les champs électromagnétiques Principales normes de sécuritéConsignes relatives aux stimulateurs cardiaques Specifications − SpecificationsVAC Model Duty Cycle And Overheating AmperesOutput Duty Cycle % VAC Model Output AmperesVolt-Ampere Curves Voltage− Installation Installing Welding Gun Installing Work ClampProcess/Polarity Table Changing PolarityInstalling Gas Supply Is required Do not move or operate unit where it could tip = GND/PEElectrical Service Guide For 230 VAC Model Installing Wire Spool And Adjusting Hub TensionThreading Welding Wire Hold wire tightly to keep it From unraveling− Operation ControlsWeld Parameter Chart For 115 VAC Model Steel20 ga 18 ga 16 ga 11 ga InchWeld Parameter Chart For 230 VAC Model Wire Welding Package 18 ga 16 ga 11 ga 048 060 Inch− Maintenance &TROUBLESHOOTING Routine MaintenanceDisconnect power before maintaining Overload Protection Drive Motor ProtectionTurn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Disconnect gun from unit Cleaning Or Replacing Gun LinerTo Reassemble Gun Replacing Switch And/Or Head Tube Troubleshooting Table Trouble Remedy− Electrical Diagram Circuit Diagram For 115 VAC ModelCircuit Diagram For 230 VAC Model − MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsTypical MIG Process Control Settings Wire Size Amperage RangeThickness to Amperage a Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Good Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Spatter Troubleshooting − PorosityTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionCommon MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentApplication Welding arc not stable Wire slipping in drive rolls Return To Table Of Contents − Parts List Main AssemblyDia Part H-10 Gun Options Optional Drive Rolls195 Page Service SupportContact your Distributor for Hobart Welding Products