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

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

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-203 034 Page 25

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Contents Processes OM-203 034RDescription File MIG GmawFrom Miller to You Table of Contents Page Arc Welding Hazards Symbol UsageElectric Shock can kill HOT Parts can cause severe burnsARC Rays can burn eyes and skin Fumes and Gases can be hazardousWelding can cause fire or explosion Flying Metal or Dirt can injure eyesFire or Explosion hazard Welding Wire can cause injuryFalling Unit can cause injury Moving Parts can cause injuryCalifornia Proposition 65 Warnings Principal Safety StandardsEMF Information About Implanted Medical DevicesUNE Décharge Électrique peut entraîner la mort Symboles utilisésLE Soudage peut provoquer un in cendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures gravesLES Fumées ET LES GAZ peuvent être dangereux LES Bouteilles peuvent exploser si elles sont endommagées LE Bruit peut endommager l’ouïeRisque D’INCENDIE OU D’EXPLO- Sion LA Chute DE L’APPAREIL peut blesserLE Soudage À L’ARC risque de provoquer des interférences Proposition californienne 65 AvertissementsLES Fils DE Soudage peuvent provoquer des blessures En ce qui concerne les implants médicaux Principales normes de sécuritéInformation EMF OM-203 034 Keep your head out of the fumes Disconnect input plug or power before working on machineManufacturer’s Warning Label Definitions 60 s I1max Symbols And DefinitionsI1eff Weee LabelDuty Cycle And Overheating SpecificationsCV Modes CC Modes Dimensions And WeightVolt-Ampere Curves Selecting a Location Connecting To Weld TerminalsMovement Tipping Location350 ft 400 ft Put terminals Weld Output Terminals And Selecting Cable SizesARC Welding can cause Electromagnetic Interference Remote 14 Receptacle Information Connecting Weld Output CablesHz Three Phase Electrical Service GuideVolts AC Duplex Receptacle Input VoltageInput Filter Board Connecting Input PowerAlways connect grounding conductor first L21 Tools NeededMode Control Mode And Voltage Control For CV Only ModelsFront Panel Controls For CV Only Models Voltage ControlPower Switch Preset Volts BlankMeter Functions For CV Only Models Front Panel Controls For CC/CV ModelsPanel Control Gtaw Meter Functions For CC/CV ModelsHold TIG Gtaw Blank Pulsed MIGMode Switch Settings For CC/CV Models Touch Seconds Do not Strike Like a Match Lift-Arc TIG Procedure For CC/CV ModelsBlowing Out Inside Of Unit Do not remove case when blowing out inside of unitRemoving Case and Measuring Input Capacitor Voltage Voltmeter/Ammeter Help Displays Reset circuit breaker CB1 see Section Troubleshooting− Electrical Diagram 239 524-A Circuit Diagram For CC/CV Welding Power Source 239 526-A 39 40 41 Complete AssemblyDia Part Description Quantity Mkgs 180 Material Thickness Gauge Work like a Pro Support ServiceYour distributor also gives Miller Electric Mfg. Co To locate a Distributor or Service Agency visitFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s

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