Hobart Welding Products 230 manual Setting Gun Polarity For Wire Type, Changing Polarity

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3-7. Setting Gun Polarity For Wire Type

Changing Polarity

Wire Drive Assembly Lead

+Positive Terminal

− Negative Terminal	Work Clamp Lead

Shown as shipped - Electrode Positive (DCEP): For solid steel, stainless steel, aluminum, or flux core with gas wires (GMAW).

Electrode Negative (DCEN):

Reverse lead connections at terminals from that shown above for gasless flux core wires (FCAW). Drive assembly becomes negative.

Tools Needed: 3/4 in

Ref. 242 145-A

3-8. Installing 2 lb Wire Spool And Adjusting Hub Tension

1Keyed Washer

2Wire Spool (2 LB)

3Keyed Washer

4Compression Spring

5Washer

6Nut

Assemble components in numer- ical order as shown.

Hand tighten nut to create a slight drag while rotating wire spool.

.Over tightening nut may

6cause wire slippage.

242 146-A

OM-235 281 Page 15

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Contents File MIG Gmaw OM-235 281AProcesses DescriptionProtect Your Investment From Hobart to YouTable of Contents Warranty HOT Parts can burn Symbol UsageArc Welding Hazards Electric Shock can killFlying Metal or Dirt can injure eyes Fumes and Gases can be hazardousARC Rays can burn eyes and skin Welding can cause fire or explosionMoving Parts can injure Welding Wire can injureFire or Explosion hazard Falling Equipment can injureAbout Implanted Medical Devices Principal Safety StandardsCalifornia Proposition 65 Warnings EMF InformationUNE Décharge Électrique peut entraîner la mort Symboles utilisésLES Fumées ET LES GAZ peuvent être dangereux DES Pièces Chaudes peuvent provoquer des brûlures gravesLE Soudage peut provoquer un in cendie ou une explosion LA Chute DE L’APPAREIL peut blesser LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées Risque D’INCENDIE OU D’EXPLO- SionLES Fils DE Soudage peuvent provoquer des blessures Proposition californienne 65 AvertissementsLE Soudage À L’ARC risque de provoquer des interférences Information EMF Principales normes de sécuritéEn ce qui concerne les implants médicaux OM-235 281 Welding Power Source Duty Cycle And Overheating SpecificationsOverheating 40.0 35.0 30.0 25.0 20.0 15.0 10.0 100 150 200 250 300 Volt-Ampere CurvesVoltage AmperageMIG GUN Installing Welding GunInstalling Work Clamp Connecting To Weld Output TerminalsElectrode Negative Dcen Setting Gun Polarity For Wire TypeInstalling 2 lb Wire Spool And Adjusting Hub Tension Changing PolarityInstalling 33 lb Wire Spool And Adjusting Hub Tension Installing 10 lb Wire Spool And Adjusting Hub TensionRear Panel Installing Gas SupplyTools Needed 1-1/8, 5/8 Positioning Jumper Links Turn off and disconnect input powerInput Amperes At Rated Output Electrical Service GuideHz Single Input VoltageConductors from unit Selecting a Location And Connecting Input PowerDo not move or operate unit where it could tip Special installation may beThreading Welding Wire Turn Off unit, and disconnect input power Controls Wire Speed Control3070 2080 1090 Weld Parameters Selecting Wire, Gas and Control SettingsBefore maintaining Routine MaintenanceDisconnect power Supplementary ProtectorsTurn Off power Replacing Drive Roll And Wire Inlet GuideRemoving Knob From Front Panel Turn Off power before replacing contact tip Aligning Drive Rolls and Wire GuideReplacing Gun Contact Tip Turn Off power before Installing cable hangers Installing Cable HangersCable Hanger Screws Tools Needed Turn off welding power source/wire feeder Welding Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Wire Drive/Gun Trouble RemedyTypical MIG Process Connections − MIG Welding Gmaw GuidelinesSelect Voltage Typical MIG Process Control SettingsWire Size Amperage Range AmperageGroove Welds Holding And Positioning Welding GunShort Normal Long Conditions That Affect Weld Bead ShapePush Perpendicular DragGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Direction Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Base metal to moveCommon MIG Shielding Gases Troubleshooting Guide For Semiautomatic Welding EquipmentApplication Drive rolls if necessary Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Welding power source− Electrical Diagram 10 − Fig 17 − Fig Main AssemblyItem Dia Part Description Quantity Mkgs Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components 234 Wire Drive Assembly Wire Drive Assembly237 H200L4−15 GunKnurl Drive Roll For Hard Shell Cored Wires AccessoriesSupport ServiceAssistance Hobart Welding Products Contact your Distributor for