Miller Electric XR W Gun Controls, Shielding Gas, Coolant Supply For Water-Cooled Models Only

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5-12. Gun Controls

1 Gun Trigger

Press trigger to energize welding power source contactor (if applica- ble), start shielding gas flow, and begin wire feed.

For shielding gas preflow and post- flow, partially press trigger before and partially release after welding.

2 Wire Speed Control

Use control to adjust wire feed speed. The numbers around the control are for reference only.

1

2

Ref. 151 666-E

5-13. Shielding Gas

2

1

1 Shielding Gas Cylinder

2 Valve

3 Gun Trigger

Open valve on cylinder just before welding.

Gun trigger turns weld output and gas flows on and off (see Section 5-12).

	3	Close valve on cylinder when
	3	finished welding.
		finished welding.

sb5.1 6/92 − S-0621-C / Ref. 151 666-E

5-14. Coolant Supply For Water-Cooled Models Only

	1	Coolant Supply
	See	Section 4-16for coolant
1	guidelines.
	Turn On coolant supply before
	welding.
	Turn Off coolant supply when
	finished welding.

Ref. 150 755-A

5-15. Sequence Of Gas Metal Arc Welding (GMAW) − Continuous Or Spot

Install &	Put On		Turn On Gas	Turn On Feeder	Begin Welding
Connect	Personal Safety	Set Controls	And Water (If	And Welding	Begin Welding
Equipment	Equipment		Applicable)	Power Source
					ssb6.1* 9/92

OM-1581 Page 28

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Contents

OM-1581137 532Y ProcessesDescription File MIG GmawFrom Miller to You Table of Contents Troubleshooting Spot Controls OptionalSymbol Usage Marks a special safety messageArc Welding Hazards Electric Shock can killARC Rays can burn eyes and skin Welding can cause fire or explosionFlying 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 LE Soudage peut provoquer un Incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent provoquer des brûlures gravesRisque D’INCENDIE OU D’EXPLO LA Chute DE L’APPAREIL peut blesser’EMPLOI Excessif peut SUR DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaques− Specifications Wire Feeder 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 Air-Cooled Feeder Connections RegulatorWater-Cooled Feeder Connections Top View Rear PanelReturn Fitting On Supply Fitting On RegulatorReinstall right side panel Voltage Sensing Lead Connections11 VAC/Contactor Control Plug Information Pins a & B of PLG5 Or -4, install 5-pin orReceptacle on welding power Source, and install plug ontoInstalling Wire Spool Threading Welding Wire Through Feeder Threading Welding Wire Through Gun Coolant GuidelinesAdjusting Wire Feed Starting Speed Safety Equipment − Operation Front 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 Flowmeter Optional Internal ControlsGun Controls Shielding GasCoolant Supply For Water-Cooled Models Only Sequence Of Gas Metal Arc Welding Gmaw − Continuous Or Spot− Maintenance & Troubleshooting Routine MaintenanceTurn 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 Changing Gun Contact Tip Removing Diffuser In Air And Water-Cooled Pistol-Grip GunsTurn Off welding power source and wire feeder Replacing The LinerSplit End Drive Roll Collet NutReplacing Hub Assembly Close gun pressure roll assembly and reinstall gun coverOverload Protection Adjusting Hub TensionWater Flow Switch Optional For Water-Cooled Models Troubleshooting Wire Feeder TroubleGun Trouble Reinstall current pick-up tab if applicable see SectionFilter, and clean fittings see Section − Electrical Diagrams Circuit Diagram For Wire FeederCircuit Diagram For Gun OM-1581 45 46 − Parts List12 13 9 10 17 18 17 Dia Part Description Quantity Mkgs CB1 Motor & Wire Drive -1 Item Includes ItemsPanel, 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 − Parts List Including Consumables NumberTapered FasTipt Contact Tips Heavy Duty FasTiptContact TipsExtra Heavy Duty FasTiptContact Tips Gas Diffusers InsulatorsBarrel Assemblies Head Tube AssembliesSupport ServiceYour distributor also gives To locate a Distributor or Service Agency visit Miller Electric Mfg. CoFor assistance in filing or settling claims, contact Your distributor and/or equipment manufacturer’s