Lincoln Electric IM10051 manual Problems in TIG Welding, Your local Lincoln Authorized

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	E-3		TROUBLESHOOTING		E-3

		Observe all Safety Guidelines detailed throughout this manual

		PROBLEMS		POSSIBLE	RECOMMENDED
		(SYMPTOMS)		CAUSE	COURSE OF ACTION

		PROBLEMS IN TIG WELDING

	Oxidation		1. lnsufficient gas.
			2.	No protection on the back side.

	Tungsten inclusions		1. lncorrect electrode sharpening.
			2.	Electrode too small.
			3.	Operating failure (contact of the
				tip with the workpiece).

	Porosity		1. Dirt on the edges.
			2.	Dirt on the filler material.
			3.	Excessive travel speed.	If all recommended possible areas of
			4.	Current intensity too low.	If all recommended possible areas of
			4.	Current intensity too low.	misadjustment have been checked
			5.	Insuffient gas flow rate	misadjustment have been checked
			5.	Insuffient gas flow rate	and the problem persists, Contact
					and the problem persists, Contact
	Hot cracking		1 Unsuitable filler material.		your local Lincoln Authorized
	Hot cracking		1 Unsuitable filler material.		Field Service Facility.
			2.	High heat supply.	Field Service Facility.
			2.	High heat supply.
			3.	Dirty materials.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

INVERTEC® V311-T AC/DC TIG

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Contents Invertec 11685Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcElectromagnetic Compatibility EMC Safety On-Line Product Registration ViiPlease Examine Carton and Equipment For Damage Immediately Table of Contents Installation Technical Specifications Invertec V311-T AC/DC TIG K2915-1Operating Temperature Range Storage Temperature Range Invertec V311-T AC/DC TIGSafety Precautions Select Suitable LocationStacking TiltingReconnect Procedure Input ConnectionsInput Plug Installation Power Cord ConnectionSingle Phase Input Three Phase InputOutput Connections Output and GAS Connection for TIG Welding Figure A.1Work Cable Connection Output Connection for Stick Welding Figure A.2Remote Control Connection Shielding GAS ConnectionSafety Instructions OperationGeneral Description Welding CapabilityRear Control Panel Figure B.1 Lower Control Panel Figure B.2Push BUTTON/ROTARY Encoder Mode Push Buttons A-D User Interface Overview and OperationDynamic LCD Display Status LED Lights Seven segment LED display HDynamic LCD Display Two Step with Arc Start Switch Welding ModesTable B.2 TIG Trigger ModesStick Trigger Modes TIG Pulse ModesSaving to Memory Recalling from MemorySymbol Unit Min Max Welding ParametersTable B.3 Parameter Parameter RangeUser Menu SET UP Parameters Figure B.7Table B.4 SET UP Menu Parameters VRDTable B.4 Optional COOL-ARC 35 Water CoolerStick Crisp Mode Dynamic Current Regulation Tips for Improved TIG StartingAccessories Optional AccessoriesField Installed Compatible EquipmentCable Plugs Maintenance Safety PrecautionsInput Filter Capacitor Discharge Procedure Routine MaintenanceTroubleshooting HOW to USE Troubleshooting GuideTroubleshooting Your local Lincoln Authorized Problems in TIG WeldingField Service Facility Electrical Failures 5TROUBLESHOOTINGE-5 Alarm ID CodesAlarm Icon + Alarm Code + Alarm Type Icon ExxWiring Diagrams Wiring DiagramPrecaucion Warnung