Miller Electric CST 250 VRD manual Selecting 400 440 Volts AC Three Phase Input Voltage

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3-11. Selecting 400 - 440 Volts AC Three Phase Input Voltage

1

2 3

5

43

Tools Needed:

5/16 in

YTurn Off welding power source, and disconnect

input power before proceeding.

Check input voltage available at site.

1Voltage Selection View Window

The input voltage that the power source is linked for appears in the Voltage Selection View Window.

Check voltage selected in unit. Changing selection is only necessary if selected value does not match available input voltage.

To change relinking board position, remove top cover and left side panel.

2Relinking Board

3Unused Terminal

4Terminal Screws Loosen terminal screws.

5Relinking Board (Connection For 400 - 440 VAC Input Power)

Slide relinking board off connected terminals, move relinking board to correct input voltage terminals, and secure relinking board.

.Be sure to tighten all four screws. Three screws securing relinking board in place.

803 079 / 803 078

OM-220 812 Page 17

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Contents OM-220 812B ProcessesDescription From Miller to You Table of Contents Page Marks a special safety message Symbol UsageArc Welding Hazards Electric Shock can killWelding can cause fire or explosion ARC Rays can burn eyes and skinFlying Metal can injure eyes Buildup of GAS can injure or killCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers − Consignes DE Sécurité − À Lire Avant Utilisation Signification des symbolesLES Décharges Électriques peuvent être mortelles LES Fumées ET LES GAZ peuvent être dangereuxLES Particules Projetées peu- vent blesser les yeux LE Soudage peut causer un incen- die ou une explosionLES Pièces Chaudes peuvent cau- ser des brûlures graves LE Bruit peut affecter l’ouïeLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut Faire LES Pièces Mobiles peuvent cau- ser des blessuresPrincipales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Installation SpecificationsDuty Cycle And Overheating DC Amps Stick Smaw Volt-Ampere CurvesTIG Gtaw Volt-Ampere Curve Dimensions And Weight Selecting a LocationLocation And Airflow 150 ft 200 ft 250 ft Weld Output Terminals And Selecting Cable Sizes350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 m Terminals AmperesPositive + Weld Output Terminal 50/60 Hz Single-Phase 50/60 Hz Three-Phase Electrical Service GuideStick Dcep Direct Current Electrode Positive Connections Input VoltageSelecting 220 Volts AC Single/Three Phase Input Voltage Relinking Board Connection For 400 440 VAC Input Power Selecting 400 440 Volts AC Three Phase Input VoltageFor three-phase operation Connecting Input PowerFor single-phase operation = GND/PEControls − OperationLift-ArctTIG Normal Process Select ControlLift-ArcStart Procedure Stick Start Procedure − Scratch Start TechniqueLift-Arc Start ApplicationRemote 14 Receptacle Information Amp Adjust ControlFan-On-Demand Rack MountingRoutine Maintenance − Maintenance and TroubleshootingBlowing Out Inside Of Unit MonthsTrouble Possible Causes Remedy TroubleshootingUse proper size and type of weld cable see Section Circuit Diagram − Electrical DiagramsSafety Information About Tungsten − Selecting and Preparing Tungsten ElectrodeSelecting Tungsten Electrode Tungsten Electrode OM-220 812 Main Assembly − Parts ListCAPACITOR,ELCTLT 2400 UF 500 VDC can 2.5 DIA Panel, Front w/Components Panel, Rear w/Components Magnetics Subassembly Heat Sink Assembly, Output Diode Base Assembly Heat Sink Assembly, Input Page Support ServiceMiller Electric Mfg. Co Owner’s Record