Miller Electric XR Control manual Duty Cycle And Overheating

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4-2. Duty Cycle And Overheating

Duty Cycle is percentage of 10 min- utes that unit can weld at rated load without overheating.

Y Exceeding duty cycle can damage unit and void warranty.

Air-Cooled Models

100% Duty Cycle At 200 Amperes Using Argon	60% Duty Cycle At 250 Amperes Using Argon

Continuous Welding

6 Minutes Welding

4 Minutes Resting

Water-Cooled Models

100% Duty Cycle At 400 Amperes Using Argon

Continuous Welding

sduty1 5/95

OM-1594 Page 12

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Contents OM-1594181 715Z ProcessesDescription From Miller to You Table of Contents Options and Accessories Warranty Directives StandardsPage Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion Buildup of GAS can injure or killCalifornia Proposition 65 Warnings Principal Safety Standards EMF InformationAbout Pacemakers UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaques + + Rating Label For CE Products Power Symbols And DefinitionsSpecifications DiameterDuty Cycle And Overheating Do not use gas pressure Above 50 psi 345 kPaAir-Cooled Feeder Connections Air-Cooled Gun Connections Water-Cooled Feeder Connections Water-Cooled Gun Connections Installing voltage sensing lead Pin Plug InformationMeter Circuit Board Settings Voltage Sensing FunctionDigital Meter Display Opening Top Cover Of XR-Edge Gun Removing Top Cover Of Pistol Grip GunInstalling Wire Spool Threading Welding Wire Through Feeder It from unravelingFor Pistol-Grip Gun Threading Welding Wire Through GunFor XR-Edge Gun For Both GunsAdjusting Wire Feed Starting Speed Setting Switches For Preflow And Postflow Adjusting Trigger Hold Actuation Time Trigger hold actuation time range is from 0 to 4 seconds− Operation ControlsGun wire feed speed Internal ControlsGun Controls Shielding GasCoolant Supply For Water-Cooled Models Only To 6 Weeks Disconnect powerSequence Of Gas Metal Arc Welding Gmaw − Continuous Or Spot MonthsFeeder Drive Assembly Maintenance Wire sizeGun Drive Assembly Maintenance For An XR-Edge Gun Post Pressure Roll w/Bearing030-1/16 wire size Replacing Head Tube Liner In XR-Edge GunsTurn Off welding power source and wire feeder Replacing The LinerReplacing Or Cleaning Gun Drive Roll In Pistol-Grip Guns Changing Gun Contact TipReplacing Head Tube Liner In Pistol-Grip Guns Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns Replacing Hub Assembly Overload Protection Water Flow Switch Optional For Water-Cooled ModelsTurn Off Wire Engine WeldingTrouble Remedy TroubleshootingDisconnect power before troubleshooting Shielding gas does not flowOM-1594 − Electrical Diagrams 218 814-B Circuit Diagram For XR Edge Gun OM-1594 − Parts List MP1 Motor & Wire Drive Motor & Wire Drive -1Item Panel, Front w/Components Water-Cooled Model Illustrated Panel, Front w/Components -1Item Exploded View Of XR-Edge Gun Part Description Quantity Part Description Barrel Assembly Of XR-Edge Gun Exploded View Of Pistol-Grip Gun 214 166 Barrel Assembly Of Pistol-Grip Gun XR-A Edge Head Tube NumberXR-A Spoolmatic Head Tube XR-W Edge Head TubeConsumables Flowchart Nozzles Heavy Duty FasTiptContact TipsExtra Heavy Duty FasTiptContact Tips Gas Diffusers Consumables Flowchart Tapered FasTipt Contact TipsValue Multi−Turn Contact Tips InsulatorsStart Your Professional Welding Career Now Page Service SupportOwner’s Record Miller Electric Mfg. Co