Miller Electric CST 250 manual Maintenance and Troubleshooting, Routine Maintenance, Months

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SECTION 5 − MAINTENANCE AND TROUBLESHOOTING

5-1. Routine Maintenance

Y Disconnect power before maintaining.

. Maintain more often during severe conditions.

3 Months

Replace unreadable labels.

Clean and tighten weld terminals.

Replace Damaged Gas Hose

3 Months

Repair Or Replace

Cracked Cables

And Cords

6 Months

YDo not remove case when blowing out inside of unit (see Section 5-2) .

Blow out inside. During heavy service clean monthly.

5-2. Blowing Out Inside Of Unit

Y Do not remove case when blowing out inside of unit.

To blow out unit, direct airflow through front and back louvers as shown.

803 080

OM-2237 Page 23

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Contents OM-2237 206 035H ProcessesDescription From Miller to You Table of Contents Page Electric 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 eyesCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Sécurité − À Lire Avant Utilisation LES Décharges Électriques peuvent être mortellesLE Bruit peut affecter l’ouïe LE Soudage peut causer un incen- die ou une explosionLES Particules Projetées peu- vent blesser les yeux LES Pièces Chaudes peuvent cau- ser des brûlures gravesLES Pièces Mobiles peuvent cau- ser des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut FairePrincipales normes de sécurité Information sur les champs électromagnétiquesConsignes relatives aux stimulateurs cardiaques − Installation SpecificationsDuty Cycle And Overheating 100 150 200 250 300 350 Stick Smaw Volt-Ampere CurvesAmps TIG Gtaw Volt-Ampere CurveDimensions And Weight Selecting a LocationLocation And Airflow Terminals Amperes Weld Output Terminals And Selecting Cable Sizes150 ft 200 ft 250 ft 350 ft 400 ft 45 m 60 m 70 m 90 m 105 m 120 mPositive + Weld Output Terminal Input Voltage Electrical Service Guide50/60 Hz Single-Phase 50/60 Hz Three-Phase Stick Dcep Direct Current Electrode Positive ConnectionsSelecting 230 Volts AC Single/Three Phase Input Voltage Relinking Board Connection For 460 575 VAC Input Power Selecting 460 575 Volts AC Three Phase Input Voltage= GND/PE Connecting Input PowerFor three-phase operation For single-phase operationControls − OperationLift-ArctTIG Normal Process Select ControlApplication Stick Start Procedure − Scratch Start TechniqueLift-ArcStart Procedure Lift-Arc StartRack Mounting Amperage ControlRemote 14 Receptacle Information Fan-On-DemandMonths − Maintenance and TroubleshootingRoutine Maintenance Blowing Out Inside Of UnitTrouble 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-2237 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