HI-FREQ Problems | Lincoln Electric TIG 275 instruction

E-4		TROUBLESHOOTING	E-4

	Observe all Safety Guidelines detailed throughout this manual

	PROBLEMS	POSSIBLE	RECOMMENDED
	(SYMPTOMS)	CAUSE	COURSE OF ACTION

HI-FREQ PROBLEMS

No hi-freq	1. Circuit breaker CB1 open
	2.	Bad connection at P12 of Control
		PC board
	3.	Spark gaps shorted
	4.	Faulty Control PC board

Hi-freq intensity too weak	1. Dirty spark gap or improper gap
		setting
	2.	Faulty Arc Starter assembly

Hi-freq on continuously in DC Tig	1. Bad connection at P11 of Control
		PC board
	2.	Micro-switch S2A is not engaged &
		disengaged properly when switch-
		ing between DC & AC polarity.
		(S2A locates on the Polarity
		switch)
	3.	Faulty Control PC board

Hi-freq shuts off after starting in AC	1. Micro-switch S2A is not engaged &
Tig		disengaged properly when switch-
		ing between DC & AC polarity.
		(S2A locates on the Polarity
		switch)

If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Lincoln Authorized Field Service Facility.

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.

PRECISION TIG 275

Image 36

Lincoln Electric TIG 275 manual HI-FREQ Problems

Contents

Precision TIG IP21S Safety California Proposition 65 Warnings Electric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’Arc Safety Safety Thank You Table of Contents Installation Rated Input Single Phase onlyPrecision TIG Recommended Input Wire and Fuse Sizes Physical DimensionsTemperature Ranges Additional Output Capacity Safety Precautions Input and Grounding Connections Work Cable Connection Stick Electrode Cable ConnectionOutput CABLES, Connections and Limitations TIG Torch Connection Figure A.2 Auxiliary Power Connections Figure A.3 Robotic Interface Connection Figure A.4 Operation Product DescriptionPipe Thawing Welding Sparks Recommended Processes and Equipment Recommended ProcessesProcess Limitations Equipment Limitations Controls and Settings Figure B.1 Control Panel Operation Do not USE 4-STEP if Using AN Amptrol Remote Advanced Panel Controls Operation Internal SET UP Controls Stick Welding FeaturesTIG Welding Features Figure B.3 Figure B.4 TIG Weld Cycle Chart Setup Guidelines for TIG Welding with AN AmptrolUsing the Start Pedal Foot Amptrol K870-1 Figure B.5 Making a TIG Weld with AN Amptrol Recommended Electrode Amperage Ranges Precision TIG Accessories Factory Installed OptionsField Installed Options Optional Equipment Maintenance Safety PrecautionsRoutine and Periodic Maintenance Overload Protection Service Procedures Component AccessSpark GAP Adjustment UNDER-COOLER Service Troubleshooting HOW to USE Troubleshooting Guide Symptoms Output ProblemsCourse of Action Meter Problems GAS Problems HI-FREQ Problems Preset & Output Control Problems Stick Welding Problems TIG Welding Problems TIG Problems Wiring Diagram Precision TIG 275 Wiring Diagram for Code Dimension Print L11660 Precision TIG Precision TIG Warnung Aviso DE