Hobart Welding Products 1800 specifications Replacing Switch And/Or Head Tube

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4-4. Replacing Switch And/Or Head Tube

Y Disconnect gun first.

1Remove handle locking nut.

3 Slide handle.

2 Remove switch housing. Note: If installing new switch, push switch lead connectors onto terminal of new switch (polarity is not important). Install switch back into handle, and secure with handle locking nut. If replacing head tube, continue to end of figure.

4Secure head tube in vice.

5 Loosen jam nut. Remove from vice and turn head tube out by hand.

6Install existing shock washer onto new head tube. Hand-tighten head tube into connector cable.

7Place head tube in vice and tighten until nuts are tight.

8Remove from vice. Reposition handle and install switch housing. Secure with handle locking nut.

Tools Needed:

3/4 in

Ref. ST-800 795-C

OM-929 Page 20

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Contents OM-929 ProcessesDescription From Hobart to You 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 Specifications Exceeding duty cycle can damage unit and void warrantyIntroduction Duty Cycle And OverheatingInstalling Welding Gun Volt-Ampere CurvesSetting Gun Polarity For Wire Type GUN Polarity Changeover ConnectionsInstalling Gas Supply Installing Wire Spool And Adjusting Hub TensionElectrical Service Guide Changing Input Voltage From 230 Volts To 200 VoltsInput Voltage Min Grounding Conductor Size In AWG/KcmilSelecting a Location And Connecting Input Power = GND/PEThreading Welding Wire Hold wire tightly to keep it from unravelingOperation Controls Weld Parameters 12 ga 14 ga 16 ga 18 ga 20 ga 22 gaMaintenance and Troubleshooting Routine MaintenanceCircuit Breakers MonthsCleaning Or Replacing Gun Liner Disconnect gun firstTo Reassemble Gun Replacing Switch And/Or Head Tube Remove handle locking nut Slide handleChanging Drive Roll And Wire Inlet Guide Welding Troubleshooting TableReplacing Gun Contact Tip Welding Trouble RemedyWire Drive/Gun Troubleshooting Table Wire Drive/Gun Trouble RemedyElectrical Diagram Circuit Diagram For Welding Power SourceParts List Main AssemblySR1 Center Baffle w/Components Center Baffle w/Components -1 Item M-15 Gun 169Page Page Service SupportContact your Distributor for Hobart Welding Products