Hobart Welding Products 230 manual Turn off welding power source/wire feeder

Page 33

5-8. Removing Nozzle, Contact Tip, And Adapter, Changing Liner, And Cleaning Gun Casing

2	3	4
	3

		Head
1		Tube
1

7/16 in

5/8 in

Remove nozzle, contact tip, and adapter.

Blow out gun casing.

Cut off wire and disconnect gun from feeder.

Lay gun cable out straight before installing new liner.

! Turn off welding power source/wire feeder.

1Nozzle

2Contact Tip

3Tip Adapter

4Nozzle Adapter

.Wire size stamped on tip − check and match wire size.

Unscrew and remove liner.

3/4 in

(20 mm)

Liner

Stickout

Tools Needed:

5/8, 7/16 in

Reassemble gun in reverse order from taking it apart.

Install

Liner

.Thread wire according to

welding power source/wire feeder manual.

242 207-A

OM-235 281 Page 29

Image 33

Contents Processes OM-235 281ADescription 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 utilisésDES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU D’EXPLO- Sion 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 Voltage Volt-Ampere CurvesAmperage 40.0 35.0 30.0 25.0 20.0 15.0 10.0 100 150 200 250 300MIG GUN Installing Welding GunInstalling Work Clamp Connecting To Weld Output TerminalsInstalling 2 lb Wire Spool And Adjusting Hub Tension Setting Gun Polarity For Wire TypeChanging Polarity Electrode Negative DcenInstalling 33 lb Wire Spool And Adjusting Hub Tension Installing 10 lb Wire Spool And Adjusting Hub TensionInstalling Gas Supply Rear PanelTools Needed 1-1/8, 5/8 Positioning Jumper Links Turn off and disconnect input powerHz Single Electrical Service GuideInput Voltage Input Amperes At Rated OutputDo not move or operate unit where it could tip Selecting a Location And Connecting Input PowerSpecial installation may be Conductors from unitThreading Welding Wire Turn Off unit, and disconnect input power Wire Speed Control Controls3070 2080 1090 Weld Parameters Selecting Wire, Gas and Control SettingsDisconnect power Routine MaintenanceSupplementary Protectors 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 Troubleshooting Table Welding Troubleshooting TableWire Drive/Gun Trouble Remedy Welding Trouble RemedyTypical MIG Process Connections − MIG Welding Gmaw GuidelinesWire Size Amperage Range Typical MIG Process Control SettingsAmperage Select VoltageGroove 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− 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 AccessoriesService SupportAssistance Hobart Welding Products Contact your Distributor for