Hobart Welding Products OM-198 683C manual Replacing Gun Contact Tip, Turn Off power

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4-4. Replacing Gun Contact Tip

2

1

Tools Needed:

4-5. Changing Drive Roll and Wire Inlet Guide

5

3

2

1

4

Tools Needed:

5/64 in 7/16 in

YTurn Off power.

1Nozzle

2Contact Tip

Cut off welding wire at contact tip. Remove nozzle.

Remove contact tip and install new contact tip. Reinstall nozzle.

Ref. 800 797-C

1Securing Screw

2Inlet Wire Guide

Loosen screw. Slide tip as close to drive rolls as possible without touching. Tighten screw.

3 Anti-Wear Guide

Install guide as shown.

4 Drive Roll

Install correct drive roll for wire size and type.

5 Drive Roll Securing Nut

Turn nut one click to secure drive roll.

ST-150 227-D

OM-198 683 Page 21

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Contents Processes OM-198 683CDescription From Hobart to You Table of Contents Page 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 killPrincipal Safety Standards About Pacemakers EMF InformationConsignes DE Securite Lire Avant Utilisation Signification des symbolesUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxDES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer un incendie ou une explosionLE Bruit peut affecter l’ouïe LA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresInformation sur les champs é lectromagné tiques Principales normes de sé curitéConsignes relatives aux stimulateurs cardiaques Specifications InstallationWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyVolt-Ampere Curves Welding Gun Duty Cycle And OverheatingDefinition Installing Welding Gun Installing Work ClampConnecting Olympic 30A Gun Installing Gas Supply Setting Gun Polarity For Wire TypePositioning Jumper Links Installing Wire Spool and Adjusting Hub TensionSelecting a Location And Connecting Input Power Electrical Service GuideScale Threading Welding WireWeld Parameter 196 Controls OperationPower Up Status Voltmeter And Wire Feed Speed Meter OperationError Message Welding StatusRoutine Maintenance Maintenance &TROUBLESHOOTINGCircuit Breaker CB1 Unit OverloadTurn Off power Changing Drive Roll and Wire Inlet GuideReplacing Gun Contact Tip Aligning Drive Rolls and Wire Guide Disconnect gun from unit first Cleaning Or Replacing Gun LinerTo Reassemble Gun Disconnect gun first Replacing Switch And/Or Head TubeTrouble Remedy TroubleshootingOM-198 683 Circuit Diagram Electrical DiagramMain Assembly Parts ListDia Part Description Mkgs Quantity Baffle, Center w/Components Baffle, Center w/Components -1 Item M-25 Gun M-25 Gun -1 Item Panel, Front w/Components -1 Item Wire Drive And Gears Wire Drive And Gears -2 ItemPanel, Rear w/Components -1 Item Drive Roll And Wire Guide KitsPage Page Support ServiceHobart Welding Products Contact your Distributor for