Miller Electric D-74D manual Installing And Threading Welding Wire

Page 19

5-7. Installing And Threading Welding Wire

Install wire spool. Adjust tension nut so			Install wire guides and
wire is taut when wire feed stops.			anti-wear guide.

Install drive rolls.

		Pressure
	Pressure	Indicator
	Pressure	Scale
	Adjust
	Rear	Pressure
	Rolls	Pressure
	Rolls	Adjust
		Adjust
		Front
		Rolls

No Wire Slip	Wire Slips
NONCONDUCTIVE	NONCONDUCTIVE
SURFACE	SURFACE

Drive Rolls		Tools Needed:
Drive Rolls
	Back Of Gun	3/16, 5/64 in
	Back Of Gun
		15/16, 3/8 in

End Of Liner

. For best wire feeding performance, be

. For soft wire or small diameter stainless

. To adjust drive roll pressure, hold nozzle

sure that the outlet cable has the proper size liner for the welding wire size being used. Also, when the gun is installed, the liner extending from the back of the gun should be as close to the drive rolls as possible, without touching.

Install gun. Lay gun cable out straight. Cut off end of wire. Push wire through guides up to drive rolls; continue to hold wire. Press Jog button to feed wire out gun.

steel wire, reduce drive roll pressure on	about 2 in (51 mm) from nonconductive
the rear roll to half that of the front rolls.	surface and press gun trigger to feed wire
	against surface. Tighten knob so wire
	does not slip. Do not overtighten. If con-
	tact tip is completely blocked, wire should
	slip at the feeder (see pressure adjust-
	ment above).Cut wire off. Close cover.
	Ref. 156 929-A / Ref. 150 922 / Ref. 156 930 / S-0627-A
	OM-1500-6 Page 15

Image 19

Contents File MIG Gmaw OM-1500-6 206 805HProcesses DescriptionFrom Miller to You Table of Contents Directives Decwire6/05Standards Electric Shock can kill Symbol UsageMarks a special safety message Arc Welding HazardsBuildup of GAS can injure or kill ARC Rays can burn eyes and skinWelding can cause fire or explosion Flying Metal can injure eyesCalifornia 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 DES Pièces Chaudes peuvent provoquer des brûlures graves LE Soudage peut provoquer unIncendie ou une explosion DES Particules Volantes peuvent blesser les yeuxDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peut SUREn ce qui concerne les stimulateurs cardiaques Principales normes de sécuritéDrive rolls can injure fingers Disconnect input plug or power before working on machineKeep your head out of the fumes Rating Label For CE Products Symbols And DefinitionsSite Selection SpecificationsRating Equipment Connection Diagrams Rear Panel Connections And Rotating Drive Assembly Gun Recommendation Table Wire Type, Size, And Feed Speed Capability TableMotor Speed Wire Type Wire Size Feed Speed Capability Pin Plug InformationInstalling And Threading Welding Wire Automatic Run-In OFF S1-1 And S1-2 Setting Internal DIP SwitchesCurrent Detect Override OFF Factory Default S1-1 And S1-2 Right Side Motor Control Board PC1 Left Side Motor PC101PC60 Optional Equipment DIP Switch SettingsJog/Purge Power SwitchLeft/Right Select Switch Power SwitchTrigger Hold Switches Trigger Hold SwitchVoltage Control And Digital Meters Disconnect power before maintaining Routine MaintenanceMonths Diagnostics Trouble Remedy TroubleshootingDisconnect power before troubleshooting Wire feeds, shielding gas flows, butOM-1500-6 − Electrical Diagram 204 716-B 21 −2 Main AssemblyPart Description Quantity Control Box 130 Harness Connectors/ReceptaclesDrive Assembly, Wire -1Item Drive Assembly, Wire203 Roll Drive Kit Drive Roll And Wire Guide Kits Fraction MetricKit Roll Wire Size Roll DrivePage Page Your distributor also gives ServiceSupport Your distributor and/or equipment manufacturer’s To locate a Distributor or Service Agency visitMiller Electric Mfg. Co For assistance in filing or settling claims, contact