Electrical Diagram, Circuit Diagram | Hobart Welding Products 140

SECTION 8 − ELECTRICAL DIAGRAM

230 952-A

Figure 8-1. Circuit Diagram

OM-925 Page 29

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Hobart Welding Products 140 manual Electrical Diagram, Circuit Diagram

Contents

OM-925 ProcessesDescription From Hobart to You Table of Contents − ACCESSORIES/CONSUMABLES − MIG Welding Gmaw GuidelinesTypical 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 Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique 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 Duty Cycle And Overheating WarrantyOutput Duty Cycle % Exceeding duty cycle can Voltage Volt-Ampere Curves15.0 10.0 100 110 120 130 140 150 160 Installing Welding Gun − InstallationInstalling Work Clamp Drive assembly. Tighten thumbscrew Changing Polarity Process/Polarity Table CO2 gas regulator/flowmeter Installing Gas Supply Do not move or operate unit Where it could tip Selecting a Location And Connecting Input Power Align locking hole in spool with locking pin on spool hub Installing Wire Spool And Adjusting Hub Tension Installing Contact Tip And Nozzle Turn off welding power sourceUse with solid or flux cored wire Lay gun cable out straight Threading Welding Wire Tighten Pressure Indicator Scale Source or -2. Do not switch under load − OperationControls Material Thickness Reference Chart Weld Parameter Chart 217 618-A Routine Maintenance − Maintenance & TroubleshootingDisconnect power Overload Protection Drive Motor Protection Turn Off power before replacing contact tip Changing Drive Roll Or Wire Inlet GuideReplacing Gun Contact Tip Tools Needed 030/.035 Groove Cleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Replacing Switch And/Or Head Tube Remove handle locking nut Secure head tube in viceSlide handle Trouble Remedy Troubleshooting Table Circuit Diagram − Electrical Diagram Typical MIG Process Connections − MIG Welding Gmaw Guidelines Wire Size Amperage Range Typical MIG Process Control SettingsThickness to Amperage a Select Voltage Holding And Positioning Welding Gun Push Conditions That Affect Weld Bead ShapePerpendicular Drag Short Normal Long Poor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Porosity Troubleshooting − Excessive SpatterTroubleshooting − Excessive Penetration Possible Causes Corrective Actions Troubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Waviness Of Bead Troubleshooting − DistortionWeld bead Troubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Readjust welding parameters Welding arc not stable Wire slipping in drive rollsWelding power source Drive rolls if necessary Accessories − ACCESSORIES/CONSUMABLESReplacement Drive Rolls Consumables Work like a Pro Start Your Professional Service SupportAssistance Hobart Welding Products Contact your Distributor for