Hobart Welding Products OM-947 212 149D manual Holding And Positioning Welding Gun

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8-4. 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

OM-947 Page 30

Image 34

Contents Description ProcessesFile Flux Cored Fcaw From Hobart to You Table of Contents Warranty Arc Welding Hazards Symbol UsageMarks a special safety message Electric Shock can killFlying Metal can injure eyes ARC Rays can burn eyes and skinWelding can cause fire or explosion 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 DES Particules Volantes peuvent blesser les yeux LE Soudage peut provoquer unIncendie ou une explosion DES Pièces Chaudes peuvent provoquer des brûlures graves’EMPLOI Excessif peut SUR Risque D’INCENDIE OU D’EXPLOLA Chute DE L’APPAREIL peut blesser DES Organes Mobiles peuvent provoquer des blessuresPrincipales normes de sécurité En ce qui concerne les stimulateurs cardiaquesSpecifications − SpecificationsDuty Cycle And Overheating Volt-Ampere Curves − InstallationInstalling Work Clamp VoltageProcess/Polarity Table Changing PolarityTools Needed 11/16, 1-1/8 Installing Gas SupplyShielding Gas Installing Wire Spool And Adjusting Hub Tension Tools NeededDo not move or operate unit where it could tip Installing Contact Tip And Nozzle Turn off welding power sourceBe sure that wire is positioned Threading Welding Wire150 mm Pull and hold wire cut off end Reinstall tip adapter, if applicable, contact tipOperating The Gun − OperationControls LoadWeld Parameter Chart 210 Overload Protection − Maintenance &TROUBLESHOOTINGRoutine Maintenance Drive Motor ProtectionChanging Drive Roll Or Wire Inlet Guide Replacing Gun Contact Tip Cleaning Gun Liner Head Mm / 10 mm Tube Replacing Gun LinerLoosen liner setscrew 10 mm Trouble Remedy Troubleshooting TableDoes not run − Electrical Diagram Circuit DiagramTypical Fcaw Process Connections − Wire Welding GuidelinesTypical MIG Process Connections Thickness to Amperage a Typical Control SettingsWire Size Amperage Range Select VoltageHolding And Positioning Welding Gun ShortNormalLong Conditions That Affect Weld Bead ShapeShort Normal Long Slow Normal FastGood Weld Bead Characteristics Poor Weld Bead CharacteristicsGun Movement During Welding Troubleshooting − Excessive Penetration Troubleshooting − Excessive SpatterTroubleshooting − Porosity Possible Causes Corrective ActionsTroubleshooting − Incomplete Fusion Troubleshooting − Lack Of PenetrationTroubleshooting − Burn-Through Troubleshooting Guide For Semiautomatic Welding Equipment Troubleshooting − Waviness Of BeadTroubleshooting − Distortion Wire does not feed− Parts List Main AssemblyOptional Pkg 225− See Table Pkg209 195 Hub Kit For 8 in Wire SpoolWeatherproof Nylon Page Page Page Support ServiceAssistance Contact your Distributor for Hobart Welding Products