Miller Electric XR A, XR W manual Run-In Speed Control, Jog Switch

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5-4. Run-In Speed Control

	1 Run-In Speed Control
1	Use control to set wire feed speed
	before arc initiation.

After arc initiation, wire feed speed is controlled by the Wire Speed Control on the welding gun (see Section 5-12).

The scale around the control is per- cent of full range, not wire speed. As a general rule, set run-in speed lower than welding wire feed speed.

Set control at 0 (zero) for scratch start.

Ref. 176 700-A

5-5. Jog Switch

1 Jog Switch

Use switch to energize drive mo- tors in feeder and gun without ener-

1gizing welding power source con- tactor. When switch is held up in Jog position, wire speed is set by Wire Speed Control on gun.

5-6. Voltage/Wire Speed Switch And Meter (Optional)

Volt sensing lead must be con- nected to workpiece for me- ters to operate.

1

2

1Voltage/Wire Speed Meter

2Voltage/Wire Speed Switch

When switch is in Voltage position, and operator is welding, meter dis- plays 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 posi- tion and operator is welding, meter displays preset wire speed in in- ches per minute. This wire speed is set by Wire Speed Control on the gun.

During run-in portion of weld cycle, meter displays run-in speed as se- lected on Run-In Speed control on feeder (see Section 5-4).

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

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Contents Processes OM-1581137 532YDescription File MIG GmawFrom Miller to You Table of Contents Spot Controls Optional TroubleshootingMarks 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 About Pacemakers Principal Safety StandardsEMF Information Indique un message de sécurité particulier UNE Décharge Électrique peut entraîner la mortLES Fumées ET LES GAZ peuvent être dangereux 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 sécuritéWire Feeder Specifications − SpecificationsGun Specifications Duty Cycle And Overheating− Installation Constant Voltage CV Weld- ing Power Source Plug Push door back into original posi- tion to close Removing Top Cover Of Pistol Grip GunTop Cover Triangular Boss Air-Cooled Gun Connections Water-Cooled Gun Connections Regulator Air-Cooled Feeder ConnectionsTop View Rear Panel Water-Cooled Feeder ConnectionsReturn Fitting On Supply Fitting On RegulatorVoltage Sensing Lead Connections Reinstall right side panel11 VAC/Contactor Control Plug Information Or -4, install 5-pin or Pins a & B of PLG5Receptacle on welding power Source, and install plug ontoInstalling Wire Spool Threading Welding Wire Through Feeder Coolant Guidelines Threading Welding Wire Through GunAdjusting Wire Feed Starting Speed − Operation Safety EquipmentFront Panel Controls Of Feeder Air-Cooled Model Shown Work And Voltage Sensing Cable ClampsRun-In Speed Control Jog SwitchVoltage/Wire Speed Switch And Meter Optional Remote Voltage Control Optional Power SwitchSpot Controls Optional Internal Controls Flowmeter OptionalShielding Gas Gun ControlsCoolant Supply For Water-Cooled Models Only Sequence Of Gas Metal Arc Welding Gmaw − Continuous Or SpotRoutine Maintenance − Maintenance & TroubleshootingTurn Off all power before maintaining MonthsChanging Or Cleaning Gun Drive Roll Changing Feeder Drive Roll And Wire Inlet Guide Close pressure roll assembly. Close and latch door Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns Changing Gun Contact TipReplacing The Liner Turn Off welding power source and wire feederSplit End Drive Roll Collet NutClose gun pressure roll assembly and reinstall gun cover Replacing Hub AssemblyOverload Protection Adjusting Hub TensionWater Flow Switch Optional For Water-Cooled Models Wire Feeder Trouble TroubleshootingGun Trouble Reinstall current pick-up tab if applicable see SectionFilter, and clean fittings see Section Circuit Diagram For Wire Feeder − Electrical DiagramsCircuit Diagram For Gun OM-1581 45 46 − Parts List12 13 9 10 17 18 17 Dia Part Description Quantity Mkgs CB1 Includes Items Motor & Wire Drive -1 ItemPanel, Front w/Components Water-Cooled Model Illustrated Panel, Front w/Components -1 Item Includes 38FigItems 24 PLG20 136 Head Tube Assembly Of Pistol-Grip Gun Number − Parts List Including ConsumablesTapered FasTipt Contact Tips Heavy Duty FasTiptContact TipsExtra Heavy Duty FasTiptContact Tips Insulators Gas DiffusersBarrel Assemblies Head Tube AssembliesSupport 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