Hobart Welding Products 230 manual Replacing Drive Roll And Wire Inlet Guide, Turn Off power

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5-3. Replacing Drive Roll And Wire Inlet Guide

		1	Securing Screw
2		2	Inlet Wire Guide
		Loosen screw. Slide tip as close to

		drive rolls as possible without
	4	touching. Tighten screw.
		3	Drive Roll

The drive roll consists of two differ- ent sized grooves. The stamped markings on the outer surface of the

1foll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread wire (see Section 3-15).

	3	4 Drive Roll Securing Nut
	3	Turn nut one click to secure drive
		Turn nut one click to secure drive
		roll.

242 533-A

5-4. Removing Knob From Front Panel

! Turn Off power.

Slide

Knob Depress Spring

Clip 5

1Front Panel

2Knob

3Spring Clip

4Control Shaft

5Slot

Rotate knob to allow access to slot. Insert Allen wrench (or stiff piece of wire) into slot, and while depressing spring clip, slide knob off control shaft.

To reinstall, push knob fully onto control shaft.

242 693-A

OM-235 281 Page 26

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Contents Description OM-235 281AProcesses File MIG GmawFrom Hobart to You Protect Your InvestmentTable of Contents Warranty Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can burnWelding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyesFalling Equipment can injure Welding Wire can injureFire or Explosion hazard Moving Parts can injureEMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical DevicesSymboles utilisés UNE Décharge Électrique peut entraîner la mortDES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion Risque D’INCENDIE OU D’EXPLO- Sion LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’APPAREIL peut blesserProposition californienne 65 Avertissements LES Fils DE Soudage peuvent provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux OM-235 281 Specifications Welding Power Source Duty Cycle And OverheatingOverheating Amperage Volt-Ampere CurvesVoltage 40.0 35.0 30.0 25.0 20.0 15.0 10.0 100 150 200 250 300Installing Welding Gun MIG GUNConnecting To Weld Output Terminals Installing Work ClampChanging Polarity Setting Gun Polarity For Wire TypeInstalling 2 lb Wire Spool And Adjusting Hub Tension Electrode Negative DcenInstalling 10 lb Wire Spool And Adjusting Hub Tension Installing 33 lb Wire Spool And Adjusting Hub TensionInstalling Gas Supply Rear PanelTools Needed 1-1/8, 5/8 Turn off and disconnect input power Positioning Jumper LinksInput Voltage Electrical Service GuideHz Single Input Amperes At Rated OutputSpecial installation may be Selecting a Location And Connecting Input PowerDo not move or operate unit where it could tip Conductors from unitThreading Welding Wire Turn Off unit, and disconnect input power Wire Speed Control Controls3070 2080 1090 Selecting Wire, Gas and Control Settings Weld ParametersSupplementary Protectors Routine MaintenanceDisconnect power Before maintainingReplacing Drive Roll And Wire Inlet Guide Turn Off powerRemoving Knob From Front Panel Aligning Drive Rolls and Wire Guide Turn Off power before replacing contact tipReplacing Gun Contact Tip Installing Cable Hangers Turn Off power before Installing cable hangersCable Hanger Screws Tools Needed Turn off welding power source/wire feeder Wire Drive/Gun Trouble Remedy Welding Troubleshooting TableWire Drive/Gun Troubleshooting Table Welding Trouble Remedy− MIG Welding Gmaw Guidelines Typical MIG Process ConnectionsAmperage Typical MIG Process Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun Groove WeldsPerpendicular Drag Conditions That Affect Weld Bead ShapePush Short Normal LongPoor Weld Bead Characteristics Good Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Lack Of Penetration Troubleshooting − Incomplete FusionTroubleshooting − Burn-Through Base metal to move Troubleshooting − Waviness Of BeadTroubleshooting − Distortion DirectionTroubleshooting Guide For Semiautomatic Welding Equipment Common MIG Shielding GasesApplication Welding power source Welding arc not stable Wire slipping in drive rollsReadjust welding parameters Drive rolls if necessary− Electrical Diagram Main Assembly 10 − Fig 17 − FigItem Dia Part Description Quantity Mkgs Center Baffle w/Components Center Baffle w/Components -1Item Rear Panel w/Components Front Panel w/Components Wire Drive Assembly 234 Wire Drive AssemblyH200L4−15 Gun 237Accessories Knurl Drive Roll For Hard Shell Cored WiresService SupportAssistance Contact your Distributor for Hobart Welding Products