Welding Problems | Lincoln Electric 170I instruction

E-4		TROUBLESHOOTING		E-4

TROUBLESHOOTING GUIDE

Observe Safety Guidelines detailed in the beginning of this manual.

PROBLEMS	POSSIBLE AREAS OF			RECOMMENDED
(SYMPTOMS)	MISADJUSTMENT(S)			COURSE OF ACTION

		WELDING PROBLEMS
Arc is unstable – Poor starting	1. Check for correct input voltage
		to machine. See Installation sec-
		tion, “Electrical Input
		Connections”.
	2.	Check for proper electrode
		polarity for process.
	3.	Check gun tip for wear or dam-
		age and proper size – Replace.		If all recommended possible areas
				If all recommended possible areas
	4.	Check for proper gas and flow		of misadjustments have been
		rate for process. (For MIG only.)		checked and the problem persists,
				contact your local Liquid Arc
	5.	Check work cable for loose or		Authorized Field Service Facility.
		faulty connections.
	6.	Check gun for damage or
		breaks.
	7.	Check for proper drive roll orien-
		tation and alignment.
	8.	Check liner for proper size.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

LOCAL AUTHORIZED LIQUID ARC FIELD SERVICE FACILITY for assistance before you proceed.

Handymig 170i

Image 41

Lincoln Electric 170I manual Welding Problems

Contents

Handymig For Engine powered equipment Safety Electric and Magnetic Fields may be dangerous ARC Rays can burn Electric Shock can killFumes and Gases can be dangerous Iii Welding Sparks can cause fire or explosion Cylinder may explode if damaged Assessment of Area Instructions for ELECTRO- Magnetic Compatibility Please Examine Carton and Equipment For Damage Immediately Table of Contents Section D ViiiSection E Section F Technical Specifications Handymig Installation Identify and Locate Components Safety Precautions Select Suitable Location Work Clamp InstallationOutput Connections Stacking Work Cable Installation GUN InstallationConnecting Gun Cable to the Handymig GAS Connection Figure A.5 Input Connections Line Cord Connection Electrical Input Connection For Rated Output Operational Features and Controls Design Features AdvantagesOperation General Description Limitations Controls and SettingsWelding Capability Sequence of Operation Wire LoadingWelding Operations Figure B.4 Wire Threading Making a Weld Cleaning Tip And NozzleProcess Guidelines Welding with Gmaw MIG Changing Machine Over to Feed Other Wire SizesWelding with Fcaw Innershield Shielding Gas Learning to Weld Learning to WeldOverload Protection Gmaw MIG Welding ARC SELF-SHIELDED Fcaw Welding ARC Joint Types and Positions Process SelectionCommon Metals Fillet Welds Welding In The Vertical PositionPenetration Welding Techniques for the SELF- Shielded Fcaw Process Machine SET UP for the SELF-SHIELDED Fcaw ProcessVertical-down Welding Correct Welding Position Correct Welding Speed Correct Electrical Stickout ESO Practice Helpful Hints Welding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG Process For the Handymig 170i, use the following To Eliminate a Ropy Convex Bead Troubleshooting WeldsTo Correct Poor Penetration in order of impor- tance To Eliminate Stubbing* in order of importance Proper Gun Handling Application Chart GUN and Cable Maintenance MaintenanceRoutine Maintenance Changing Drive Roll Component Replacement ProceduresChanging the Contact TIP Liner trim length Changing LinerGUN Handle Parts Ground Test Procedure HOW to USE Troubleshooting Guide 1TROUBLESHOOTINGE-1 Troubleshooting Guide TroubleshootingProblems Possible Areas Symptoms Misadjustments Recommended Course of Action Contact your local Liquid Arc Authorized Field Service Facility Welding Problems Handymig 170i Wiring Diagram Code Wiring Diagrams Precaucion Warnung Copyright 2000 Lincoln Global Inc