Miller Electric XR A, XR W manual Wire Feeder Specifications, Gun Specifications

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SECTION 3 − SPECIFICATIONS

3-1. Wire Feeder Specifications

Specification	Description


Type Of Input Power	115 Volts AC, 3 Amperes At 50/60 Or 100 Hz Power
Control Circuit Voltage Provided At Gun	30 Volts DC
Wire Feed Speed Range	70-875 ipm (1.9-22.2 mpm)
Overall Dimensions	Length: 19 in (483 mm); Width: 9-1/4 in (235 mm); Height: 15-1/4 in (387 mm)
Maximum Spool Capacity	12 in (305 mm)
Cooling Method	Air-Cooled (A Models) Or Water-Cooled (W Models)
Weight (Feeder With Gun)	Models With 15 ft (4.6 m) Cable Assembly
	Net: 56 lb (25 kg); Ship: 58 lb (26 kg)
	Models With 30 ft (9.1 m) Cable Assembly
	Net: 63 lb (29 kg); Ship: 65 lb (30 kg)

3-2. Gun Specifications

Specification		Description


Input Voltage	30 Volts DC
Duty Cycle (Air-Cooled Models)	At 200	Amperes, 100% Using Argon Or Argon Mixture Shielding Gas
	At 250	Amperes, 60% Using Argon Or Argon Mixture Shielding Gas (See
	Section 3-3)
Duty Cycle (Water-Cooled Models)	At 400	Amperes, 100% Using Argon Or Argon Mixture Shielding Gas (See Sec-
	tion 3-3)
Wire Size Range	.030 Thru 1/16 in (0.8 Thru 1.6 mm) Aluminum Wire
	.030 Thru .045 in (0.8 Thru 1.1 mm) Hard Or Cored Wire

3-3. 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

OM-1581 Page 9

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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 EMF Information Principal Safety StandardsAbout Pacemakers LES Fumées ET LES GAZ peuvent être dangereux UNE Décharge Électrique peut entraîner la mortIndique 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 sécuritéWire Feeder Specifications − SpecificationsGun Specifications Duty Cycle And Overheating− Installation Constant Voltage CV Weld- ing Power Source Plug Top Cover Triangular Boss Removing Top Cover Of Pistol Grip GunPush door back into original posi- tion to close 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 ClampsVoltage/Wire Speed Switch And Meter Optional Jog SwitchRun-In Speed Control Spot Controls Optional Power SwitchRemote Voltage Control 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 AssemblyWater Flow Switch Optional For Water-Cooled Models Adjusting Hub TensionOverload Protection Wire Feeder Trouble TroubleshootingFilter, and clean fittings see Section Reinstall current pick-up tab if applicable see SectionGun Trouble Circuit Diagram For Wire Feeder − Electrical DiagramsCircuit Diagram For Gun OM-1581 12 13 9 10 17 18 17 − Parts List45 46 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 Items 24 38FigIncludes PLG20 136 Head Tube Assembly Of Pistol-Grip Gun Number − Parts List Including ConsumablesExtra Heavy Duty FasTiptContact Tips Heavy Duty FasTiptContact TipsTapered FasTipt Contact Tips Insulators Gas DiffusersBarrel Assemblies Head Tube AssembliesYour distributor also gives ServiceSupport 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