Miller Electric XR Control manual Operation, Controls

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SECTION 6 − OPERATION

6-1. Controls

1

2

3

4

12

5

6

7

8

9

10

11

801 554

1Voltage/Wire Speed Meter

2Voltage/Wire Speed Switch

When switch is in Voltage position, and operator is welding, meter displays arc voltage. Cable resistance and poor connections may cause displayed voltage to vary slightly from actual voltage at welding arc.

When switch is in Wire Speed position and operator is welding, meter displays preset wire speed in inches per minute. This wire speed is the combined settings of the Weld Speed Control on unit and Wire Speed Control on gun.

During run-in portion of weld cycle, meter displays run-in speed as selected on Run-In Speed control on feeder.

When welding Direct Current Electrode Negative (DCEN), meter does not display accurate output voltages; however, meter displays accurate wire speed values.

3 Remote Voltage Control (Optional)

Use control to adjust arc voltage at the wire feeder.

The scale around the control is marked in percent.

4 Wire Speed Control

Use control to set wire feed speed after arc initiation.

.The gun wire feed speed control adjusts wire speed from minimum to maximum setting on Wire Speed Control.

The scale around the control is percent of full range, not wire speed.

5 Schedule A Indicator LED

LED illuminates when Schedule A is active. 6 Press To Set Push Button

Use push button to set wire speed for Schedule B.

7 Schedule B Indicator LED

LED illuminates when Schedule B is active. 8 Wire Speed B Control (Optional)

Use control to set wire feed speed for a schedule B welding operation.

.A dual schedule switch must be installed in unit to set wire speed B. There is no run-in speed setting for wire speed B.

The scale around the control is percent of full range, not wire speed.

9 Remote Voltage B Control (Optional)

Use control to adjust arc voltage at the wire feeder for a schedule B welding operation.

The scale around the control is marked in percent.

10 Jog/Purge Switch

Push up to momentarily feed welding wire at speed set on Wire Speed control without energizing welding circuit or shielding gas valve.

Push down to momentarily energize gas valve to purge air from gun or adjust gas regulator.

11 Trigger Hold Switch

Push up to weld without holding gun trigger throughout the weld cycle.

To start weld, press gun trigger, and trigger hold will actuate after 3 seconds of weld time. To end weld, press and release gun trigger.

12 Flowmeter (Optional)

Use flowmeter to control shielding gas flow at the feeder. The scale on the flowmeter is in cubic feet per hour (CFH). Read gas flow at the widest part of the float in the meter. Rotate valve to change gas flow as necessary.

A regulator is still required on shielding gas supply with this option.

OM-1594 Page 27

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Contents OM-1594181 715Z ProcessesDescription From Miller to You Table of Contents Options and Accessories Warranty Standards DirectivesPage 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 UNE Décharge Électrique peut entraîner la mort LES Fumées ET LES GAZ peuvent être dangereuxIndique un message de sécurité particulier Incendie ou une explosion LE Soudage peut provoquer unDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesLA Chute DE L’APPAREIL peut blesser Risque D’INCENDIE OU D’EXPLO’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresEn ce qui concerne les stimulateurs cardiaques Principales normes de sécurité+ + Rating Label For CE Products Specifications Symbols And DefinitionsPower DiameterDuty Cycle And Overheating Above 50 psi 345 kPa Do not use gas pressureAir-Cooled Feeder Connections Air-Cooled Gun Connections Water-Cooled Feeder Connections Water-Cooled Gun Connections Pin Plug Information Installing voltage sensing leadMeter Circuit Board Settings Voltage Sensing FunctionDigital Meter Display Removing Top Cover Of Pistol Grip Gun Opening Top Cover Of XR-Edge GunInstalling Wire Spool It from unraveling Threading Welding Wire Through FeederFor XR-Edge Gun Threading Welding Wire Through GunFor Pistol-Grip Gun For Both GunsAdjusting Wire Feed Starting Speed Setting Switches For Preflow And Postflow Trigger hold actuation time range is from 0 to 4 seconds Adjusting Trigger Hold Actuation TimeControls − OperationInternal Controls Gun wire feed speedGun Controls Shielding GasCoolant Supply For Water-Cooled Models Only Sequence Of Gas Metal Arc Welding Gmaw − Continuous Or Spot Disconnect powerTo 6 Weeks MonthsWire size Feeder Drive Assembly MaintenancePost Pressure Roll w/Bearing Gun Drive Assembly Maintenance For An XR-Edge GunReplacing Head Tube Liner In XR-Edge Guns 030-1/16 wire sizeReplacing The Liner Turn Off welding power source and wire feederChanging Gun Contact Tip Replacing Or Cleaning Gun Drive Roll In Pistol-Grip GunsReplacing Head Tube Liner In Pistol-Grip Guns Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns Replacing Hub Assembly Turn Off Wire Water Flow Switch Optional For Water-Cooled ModelsOverload Protection Engine WeldingDisconnect power before troubleshooting TroubleshootingTrouble Remedy 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 Spoolmatic Head Tube NumberXR-A Edge Head Tube XR-W Edge Head TubeConsumables Flowchart Nozzles Heavy Duty FasTiptContact TipsExtra Heavy Duty FasTiptContact Tips Value Multi−Turn Contact Tips Consumables Flowchart Tapered FasTipt Contact TipsGas Diffusers InsulatorsStart Your Professional Welding Career Now Page Support ServiceMiller Electric Mfg. Co Owner’s Record