Miller Electric Complete Guide to Maintaining Your Welder's Gun Liner

Page 33

6-8. Cleaning Or Replacing Gun Liner

YDisconnect gun from unit.

Head Tube

Remove nozzle, contact tip, adapter, gas diffuser, and wire outlet guide.

1/2 in

Lay gun cable out straight before installing new liner.

Blow out gun casing.

Tools Needed:

3/8 in

Remove liner.

To Reassemble Gun:

Install and tighten new liner.

Cut liner off 3/4 in (20 mm) (3/8 in [9.5 mm] for aluminum) from head tube.

Install adapter, contact tip, and nozzle.

Ref. 802 399-A

OM-1330 Page 29

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Contents Processes OM-1330220 237HDescription File MIG GmawFrom Miller to You Table of Contents − Parts List Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia 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 Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéSpecifications Symbols And DefinitionsGeneral Specifications 115 VACOverheating Duty Cycle And OverheatingVolt-Ampere Curves MIG Welding Gun Duty Cycle And OverheatingDefinition Installing Work Clamp Connecting To Weld Output TerminalsSetting Gun Polarity For Wire Type Installing Welding GunRear Panel Installing Gas SupplyInstalling 1 Or 2 lb Wire Spool Installing MIG Wire Spool and Adjusting Hub TensionConnecting 1-Phase Input Power For 230 VAC Electrical Service Guide For 230 VAC Hz Single PhaseExtension Cord Data Do not move or operate unit where it could tip Selecting a Location And Connecting Input PowerScale Threading Welding WireInstalling Diverter Valve And Switch For Optional Spool Gun Turn Off unit, and disconnect input powerOperation End of hose Connecting An Optional Spool GunControls − OperationOM-1330 Weld Parameter Chart 220 493-A Routine Maintenance Supplementary Protector CB1Months Turn Off power Changing Drive Roll and Wire Inlet GuideUnit Overload Replacing Gun Contact TipRemoving Knob From Front Panel Aligning Drive Rolls and Wire GuideCleaning Or Replacing Gun Liner Disconnect gun from unitTo Reassemble Gun Disconnect gun first Replacing Switch And/Or Head TubeWelding Trouble Remedy Troubleshooting− Electrical Diagram 220 197-E Typical MIG Process Connections − MIG Welding Gmaw GuidelinesWire Recommendation Wire Speed Typical MIG Process Control SettingsSelect Wire Size Select VoltageHolding And Positioning Welding Gun Conditions That Affect Weld Bead Shape Poor 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 BeadWire does not feed Troubleshooting Guide For Semiautomatic Welding EquipmentCommon MIG Shielding Gases ApplicationWelding arc not stable Wire slipping in drive rolls − Parts List CABLE,POWER 12 FT 5 in 12GA 4C Soow W/SPL Plug Baffle, Center w/Components Baffle, Center w/Components -1Item Panel, Rear w/Components Panel, Front w/Components 204857 See Section Drive Roll & Wire Guide KitsM-10 Gun 207 Optional Spoolmate Spool Gun Switch Drive Roll And Wire Guide KitsPage Page Support ServiceMiller Electric Mfg. Co Owner’s Record
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