Miller Electric 456 CV, 456 CC manual Lift-Arc TIG Procedure

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4-4. Lift-Arc TIG Procedure

1 2

1 – 2

“Touch” Seconds

Do NOT Strike Like A Match!

With Mode switch in the Lift-Arc TIG position, start an arc as follows:

1TIG Electrode

2Workpiece

Touch tungsten electrode to work- piece at weld start point, hold electrode to workpiece for 1-2 seconds, and slowly lift electrode. An arc will form when electrode is lifted.

Normal open-circuit voltage is not present before tungsten electrode touches workpiece; only a low sensing voltage is present between electrode and workpiece. The solid-state output contactor does not energize until after electrode is touching workpiece. This allows electrode to touch workpiece with- out overheating, sticking, or getting contaminated.

Ref. S-156 279

OM-188 422 Page 23

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Contents OM-188 422F ProcessesDescription From Miller to You Table of Contents Standards DirectivesElectric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumé ES ET LES GAZ peuvent ê tre dangereux Signification des symbolesConsignes DE Securite Lire Avant Utilisation UN Choc É Lectrique peut tuerLE Soudage peut provoquer un incendie ou une explosion DES Particules Volantes peuvent blesser les yeuxLE Bruit peut affecter l’ouïe DES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutPrincipales normes de sé curité Information sur les champs é lectromagné tiquesConsignes relatives aux stimulateurs cardiaques Manufacturer’s Warning Label Definitions Definitions60 s Symbols And Definitions I1maxI1eff Manufacturer’s Rating Label Installation SpecificationsDuty Cycle And Overheating Dimensions And Weight Volt-Ampere CurvesCV Modes CC Modes Selecting a Location Movement TippingLocation Weld Output Terminals And Selecting Cable Sizes ARC Welding can cause Electromagnetic InterferenceTerminals Socket Remote 14 Receptacle InformationVolts AC Duplex Receptacle Electrical Service GuideAlways connect grounding conductor first Connecting Input PowerFront Panel Controls OperationMeter Functions PPPMode Output Control Mode Switch SettingsLift-Arc TIG Procedure Maintenance & Troubleshooting Do not remove case when blowing out inside of unitBlowing Out Inside Of Unit Removing Case and Measuring Input Capacitor Voltage Help 3 Display Voltmeter/Ammeter Help DisplaysTrouble Remedy TroubleshootingCircuit Diagram For Welding Power Source Electrical Diagram192 Complete Assembly Parts ListDia Part Description Mkgs Quantity HD1 168 OM-188 422 OM-188 422 Support ServiceMiller Electric Mfg. Co Owner’s Record
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