Hobart Welding Products M-25 GUN Maintenance and Troubleshooting, Routine Maintenance, Months

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SECTION 4 – MAINTENANCE AND TROUBLESHOOTING

4-1. Routine Maintenance

Y Disconnect power before maintaining.

3 Months

Replace unreadable labels.

Repair or replace cracked weld cable.

Clean and tighten weld terminals.

6 Months

Blow out or vacuum inside. During heavy

service, clean monthly.

OR

Remove drive roll and carrier. Apply light coat of oil or grease to drive motor shaft.

4-2. Circuit Breaker CB1

1

1 Circuit Breaker CB1

If CB1 opens, wire feeding stops.

2 Welding Gun

Check gun liner for blockage or kinks.

3 Wire Drive Assembly

Check for jammed wire, binding drive gear or misaligned drive rolls.

Allow cooling period and reset breaker. Close door.

2

3

Ref. ST-801 789 / Ref. 800 797-C

OM-194 430 Page 20

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Contents OM-194 430A ProcessesDescription JunePage Table of Contents Page Symbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying Metal can injure eyes Buildup of GAS can injure or killPrincipal Safety Standards EMF Information About PacemakersSignification des symboles Consignes DE Securite Lire Avant UtilisationUN Choc É Lectrique peut tuer LES Fumé ES ET LES GAZ peuvent ê tre dangereuxLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe Risque D’INCENDIE OU LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Installation SpecificationsWelding Power Source Duty Cycle And Overheating Exceeding duty cycle can damage unit and void warrantyWelding Gun Duty Cycle And Overheating Volt-Ampere CurvesDefinition Installing Running Gear Installing Welding GunSetting Gun Polarity For Wire Type Installing Gas Supply Installing Wire Spool And Adjusting Hub TensionInstalling Work Clamp Positioning Jumper LinksElectrical Service Guide Selecting a Location And Connecting Input PowerInput Voltage Min Grounding Conductor Size In AWG/KcmilThreading Welding Wire Hold wire tightly to keep it from unravelingOperation ControlsWeld Parameters CO2Knockout Panel Maintenance and Troubleshooting Routine MaintenanceDisconnect power before maintaining Circuit Breaker CB1Changing Drive Roll And Wire Inlet Guide Aligning Drive Rolls And Wire GuideUnit Overload Replacing Gun Contact TipTurn off welding power source/wire feeder Wire size stamped on tip check and match wire sizeReplacing Switch And/Or Head Tube Disconnect gun firstTroubleshooting Trouble RemedyElectrical Diagram Circuit Diagram For Welding Power SourceOM-194 430 Parts List Main AssemblyItem Dia Part Description Mkgs Quantity Center Baffle w/Components Center Baffle w/Components -1 Item Wire Drive Assembly -2 Item Gun And Cable Assembly, M-25 Part Description Quantity Options and Accessories Page File a claim for loss or damage during ship Ment