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Miller Electric XMT 456CV, XMT 456 CC manual Lift-Arc TIG Procedure For CC/CV Models

Models: XMT 456CV XMT 456 CC

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5-7. Lift-Arc TIG Procedure For CC/CV Models

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“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-203 034 Page 26

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Miller Electric XMT 456CV, XMT 456 CC Lift-Arc TIG Procedure For CC/CV Models, Touch Seconds Do not Strike Like a Match

Contents

Description OM-203 034NProcesses File MIG Gmaw From Miller to You Table of Contents Directives StandardsDecstat6/05 Electric Shock can kill Symbol UsageArc Welding Hazards HOT Parts can cause severe burns Welding can cause fire or explosion Fumes and Gases can be hazardousARC Rays can burn eyes and skin Flying Metal or Dirt can injure eyes Falling Unit can cause injury Welding Wire can cause injuryFire or Explosion hazard Moving Parts can cause injury EMF Information Principal Safety StandardsCalifornia Proposition 65 Warnings About Implanted Medical Devices Symboles utilisés UNE Décharge Électrique peut entraîner la mort DES Pièces Chaudes peuvent provoquer des brûlures graves LES Fumées ET LES GAZ peuvent être dangereuxLE Soudage peut provoquer un in cendie ou une explosion Risque D’INCENDIE OU D’EXPLO- Sion LE Bruit peut endommager l’ouïeLES Bouteilles peuvent exploser si elles sont endommagées LA Chute DE L’APPAREIL peut blesser Proposition californienne 65 Avertissements LES Fils DE Soudage peuvent provoquer des blessuresLE Soudage À L’ARC risque de provoquer des interférences Principales normes de sécurité Information EMFEn ce qui concerne les implants médicaux OM-203 034 Disconnect input plug or power before working on machine Manufacturer’s Warning Label DefinitionsKeep your head out of the fumes 60 s I1eff Symbols And DefinitionsI1max Weee Label Manufacturer’s Rating Labels Specifications Duty Cycle And Overheating Dimensions And Weight Volt-Ampere CurvesCV Modes CC Modes Movement Tipping Connecting To Weld TerminalsSelecting a Location Location Weld Output Terminals And Selecting Cable Sizes ARC Welding can cause Electromagnetic Interference350 ft 400 ft Put terminals Connecting Weld Output Cables Remote 14 Receptacle Information Volts AC Duplex Receptacle Electrical Service GuideHz Three Phase Input Voltage Always connect grounding conductor first Connecting Input PowerInput Filter Board L21 Tools Needed Front Panel Controls For CV Only Models Mode And Voltage Control For CV Only ModelsMode Control Voltage Control Meter Functions For CV Only Models Preset Volts BlankPower Switch Front Panel Controls For CC/CV Models Hold TIG Gtaw Blank Meter Functions For CC/CV ModelsPanel Control Gtaw Pulsed MIG Mode Switch Settings For CC/CV Models Lift-Arc TIG Procedure For CC/CV Models Touch Seconds Do not Strike Like a Match Do not remove case when blowing out inside of unit Blowing Out Inside Of Unit Removing Case and Measuring Input Capacitor Voltage Voltmeter/Ammeter Help Displays Troubleshooting Reset circuit breaker CB1 see Section OM-203 034 − Electrical Diagram 203 505-A Circuit Diagram For CC/CV Welding Power Source 204 950−B Complete Assembly 39 40 41 Dia Part Description Quantity Mkgs 180 Service Your distributor also givesSupport For assistance in filing or settling claims, contact To locate a Distributor or Service Agency visitMiller Electric Mfg. Co Your distributor and/or equipment manufacturer’s