Hobart Welding Products 210 MVP manual Process/Polarity Table, Changing Polarity

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5-4. Process/Polarity Table

Process	Polarity	Cable Connections

		Cable To Gun	Cable To Work
		Cable To Gun	Cable To Work

GMAW − Solid wire with shield-	DCEP − Reverse polarity	Connect to positive (+) out-	Connect to negative (−) output
ing gas		put terminal	terminal

FCAW − Self-shielding wire −	DCEN − Straight Polarity	Connect to negative (−)	Connect to positive (+) output
no shielding gas		output terminal	terminal

5-5. Changing Polarity

CHANGING

POLARITY

DCEN

Electrode negative for

flux cored wire

DCEP

Electrode positive for

solid wire

! Turn off welding power source.

1Lead Connections For Direct Current Electrode Negative (DCEN)

2Lead Connections For Direct Current Electrode Positive (DCEP)

Always read and follow wire manufacturer’s recommended polarity, and see Section 5-4.

Close door.

Ref. 209 228 / Ref. 209 229

OM-249 498 Page 17

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Contents Processes OM-249 498BDescription File MIG GmawProtect Your Investment From Hobart to YouTable of Contents Warranty Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can burnARC Rays can burn eyes and skin Fumes and Gases can be hazardousWelding can cause fire or explosion Flying Metal or Dirt can injure eyesFire or Explosion hazard Welding Wire can injureFalling Equipment can injure Moving Parts can injureCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical DevicesUNE Décharge Électrique peut entraîner la mort Symboles utilisésLES Pièces Chaudes peuvent provoquer des brûlures LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un incendie ou une explosion LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU LA Chute DE L’ÉQUIPEMENT peut provoquer des blessuresLes Pièces Mobiles peuvent causer des blessures Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures LE Soudage À L’ARC risque de provoquer des interférencesPrincipales normes de sécurité Informations relatives aux CEMEn ce qui concerne les implants médicaux OM-249 498 − Definitions Symbols And DefinitionsI1max I1eff− Specifications Specifications For 230 VACSpecifications For 115 VAC 30% duty cycle at 150 amps Minutes Welding Duty Cycle And Overheating20% duty cycle at 90 amps Minutes Welding OverheatingVoltage Amperage Volt-Ampere Curves− Installation Installing Nozzle, Contact Tip, And AdapterInstalling Welding Gun Installing Work Clamp Turn off welding power source Process/Polarity TableChanging Polarity Installing Gas Supply After flow is set, close pressure assemblyTools Needed 1-1/8 Extension Cord Data Use Shortest Cord Possible Electrical Service GuideMulti−Voltage Plug MVP Connection Do not move or operate Unit where it could tip Selecting a Location And Connecting Input PowerDo Not modify or rewire receptacle Connection Serial Number And Rating Label LocationLocal Codes − have only InstallationQualified Persons Make YellowConnecting 1-Phase Input Power For 115 VAC Input Installing 8 in mm Wire Spool Installing Wire Spool And Adjusting Hub TensionConnecting Optional Spool Gun Wire Feed Speed ControlExposed O-rings Threading Welding Wire Controls − OperationWeld Parameter Chart Routine Maintenance − Maintenance &TROUBLESHOOTINGOverload Protection Drive Motor Protection023/.025 Changing Drive Roll Or Wire Inlet Guide030/.035 Groove Knurled Smooth StampedNozzle Contact Tip Tip Adapter Head Tube Remove nozzle, contact tip, and adapter Blow out gun casingStickout Tools Needed Mm, 10 mm Replacing Switch And/Or Head Tube Trouble Remedy Troubleshooting TableCircuit Diagram − Electrical Diagram249 315-A − MIG Welding Gmaw Guidelines Regulator Flowmeter Shielding Gas Wire Feeder Power SourceTypical MIG Process Connections Gun Workpiece Work ClampTypical MIG Process Control Settings Wire Size Amperage RangeSelect Voltage Groove Welds Holding And Positioning Welding GunPush Conditions That Affect Weld Bead ShapePerpendicular Drag Short Normal LongPoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Porosity Troubleshooting − Excessive SpatterTroubleshooting − Excessive Penetration Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Troubleshooting − Distortion Troubleshooting − Waviness Of BeadBase metal to move DirectionTroubleshooting 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− Parts List 57 5849 32 Dia Part Description Quantity Optional 245 H100S4-10 GunOptional Drive Rolls OptionsConsumables Service SupportAssistance Hobart Welding Products Contact your Distributor for