Miller Electric XLT 135, XLT 165, XLT 165, XLT 135 warranty Holding And Positioning Welding Gun

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7-3. Holding And Positioning Welding Gun

NOTE

Welding wire is energized when gun trigger is pressed. Before lowering helmet and pressing trigger, be sure wire is no more than 1/2 in (13 mm) past end of nozzle, and tip of wire is positioned correctly on seam.

	1			1	Hold Gun and Control Gun
					Trigger
				2	Workpiece
			3	3	Work Clamp
		2	3	4	Electrode Extension (Stickout)
				4	Electrode Extension (Stickout)
					1/4 to 1/2 in (6 To 13 mm)
					1/4 to 1/2 in (6 To 13 mm)
				5 Cradle Gun and Rest Hand on
5					Workpiece
5
	4
		0°-15°
90°	90°
End View Of Work Angle		Side View Of Gun Angle
	GROOVE WELDS
	45°	0°-15°
45°
End View Of Work Angle		Side View Of Gun Angle
	FILLET WELDS				S-0421-A
					S-0421-A

OM-198 076 Page 31

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Contents April OM-198 076AProcesses DescriptionPage Table of Contents Page 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 eyesPrincipal Safety Standards About Pacemakers EMF InformationLES Fumées ET LES GAZ peuvent être dangereux Signification des symboles− Consignes DE Securite − Lire Avant Utilisation UN Choc Électrique peut tuerLE Bruit peut affecter l’ouïe LE Soudage peut provoquer un incendie ou une explosionDES Particules Volantes peuvent blesser les yeux DES Pièces Chaudes peuvent pro- voquer des brûlures gravesDES Organes Mobiles peuvent provoquer des blessures Risque D’INCENDIE OULA Chute DE L’APPAREIL peut blesser ’EMPLOI Excessif peutConsignes relatives aux stimulateurs cardiaques Principales normes de sécuritéInformation sur les champs électromagnétiques VAC Model − SpecificationsSpecifications Overheating Duty Cycle And OverheatingOutput Duty Cycle % Output AmperesVolt-Ampere Curves Installing Welding Gun Installing Work Clamp − InstallationChanging Polarity Process/Polarity TableRegulator/flowmeter and CO2 cylinder CO2 Gas Installing Gas SupplyFlow Adjust CO2 Adapter Customer Sup- pliedUp to 200 ft 61 m Rating LabelGrounded Receptacle Volt, 20 ampere individualSee Section Do not move or operate unit where it could tipPlug ReceptacleAdjusting Hub Tension Electrical Service Guide For 230 VAC ModelInstalling Wire Spool And Adjusting Hub Tension Standard Wire Spool 8 Lb Wire Spool 4Threading Welding Wire Controls Voltage SwitchPower Switch OM-198 076 − OperationWeld Parameters For 115 VAC Model Weld Parameters For 230 VAC Model Drive Motor Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Overload ProtectionReplacing Gun Contact Tip Changing Drive Roll Or Wire Inlet GuideTurn Off power before replacing contact tip To Reassemble Gun Cleaning Or Replacing Gun LinerDisconnect gun from unit Replacing Switch And/Or Head Tube Does not run Troubleshooting TableTrouble Remedy Circuit Diagram For 115 VAC Model − Electrical DiagramCircuit Diagram For 230 VAC Model Typical MIG Process Connections − MIG Welding Gmaw GuidelinesSelect Voltage Typical MIG Process Control SettingsWire Size Amperage Range Select Wire Size Recommendation Wire SpeedHolding And Positioning Welding Gun ShortNormalLong Conditions That Affect Weld Bead ShapePush Perpendicular Drag Short Normal LongGun Movement During Welding Poor Weld Bead CharacteristicsGood Weld Bead Characteristics Possible Causes Corrective Actions Troubleshooting − Excessive SpatterTroubleshooting − Porosity Troubleshooting − Excessive PenetrationTroubleshooting − Burn-Through Troubleshooting − Lack Of PenetrationTroubleshooting − Incomplete Fusion Direction Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Base metal to moveFlat & Horizontal1 Fillet Common MIG Shielding GasesApplication Main Assembly − Parts ListDia Part Description Quantity Mkgs Gun 024 .6 and .045 042024 .6 and .030/.035 .8 Page Warranty Owner’s Record