Lincoln Electric 170I manual Welding Problems

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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

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Contents Handymig For Engine powered equipment SafetyElectric and Magnetic Fields may be dangerous ARC Rays can burn Electric Shock can killFumes and Gases can be dangerous IiiWelding Sparks can cause fire or explosion Cylinder may explode if damagedAssessment of Area Instructions for ELECTRO- Magnetic CompatibilityPlease Examine Carton and Equipment For Damage Immediately Table of Contents Section D ViiiSection E Section FTechnical Specifications Handymig InstallationIdentify and Locate Components Safety PrecautionsSelect Suitable Location Work Clamp InstallationOutput Connections StackingWork Cable Installation GUN InstallationConnecting Gun Cable to the Handymig GAS ConnectionFigure A.5 Input ConnectionsLine Cord Connection Electrical Input Connection For Rated OutputOperational Features and Controls Design Features AdvantagesOperation General DescriptionLimitations Controls and SettingsWelding Capability Sequence of Operation Wire LoadingWelding Operations Figure B.4 Wire ThreadingMaking a Weld Cleaning Tip And NozzleProcess Guidelines Welding with Gmaw MIG Changing Machine Over to Feed Other Wire SizesWelding with Fcaw Innershield Shielding GasLearning to Weld Learning to WeldOverload Protection Gmaw MIG Welding ARC SELF-SHIELDED Fcaw Welding ARCJoint 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 PositionCorrect Welding Speed Correct Electrical Stickout ESOPractice Helpful HintsWelding Techniques for the Gmaw MIG Process Machine SET UP for the Gmaw MIG ProcessFor 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 importanceProper 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-1Troubleshooting Guide TroubleshootingProblems Possible Areas Symptoms Misadjustments Recommended Course of ActionContact your local Liquid Arc Authorized Field Service FacilityWelding Problems Handymig 170i Wiring Diagram Code Wiring DiagramsPrecaucion Warnung Copyright 2000 Lincoln Global Inc