Welding Problems | Lincoln Electric UWW-170 specification

	E-4			TROUBLESHOOTING					E-4

			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.
							Contact your local Lincoln
					4.	Check for proper gas and flow	Authorized Field Service Facility.
						rate for process. (For MIG only.)
					5.	Check work cable for loose or
						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 LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.

SP-170-I

Image 42

Lincoln Electric UWW-170 manual Welding Problems

Contents

SP 170-I and UWW-170 Safety California Proposition 65 Warnings Electric Shock can kill Welding Sparks can cause fire or explosion Iii Précautions DE Sûreté Sûreté Pour Soudage a L’Arc Thank You Please Examine Carton and Equipment For Damage Immediately Table of Contents Installation Identify and Locate Components 2INSTALLATIONA-2Safety Precautions Electric Shock can kill Output Connections Select Suitable LocationLimitations Stacking Connecting Gun Cable to the SP GUN InstallationWork Cable Installation GAS Connection Power Input Cable Input Connections Line Cord Connection 230 50/60 Operation Design Features AdvantagesOperational Features and Controls General Description Controls and Settings Welding Capability Welding Operations Wire LoadingFriction Brake Adjustment Sequence of Operation Figure B.4 Cleaning Tip And Nozzle Process GuidelinesMaking a Weld Changing Machine Over to Feed Other Wire Sizes Welding with Gmaw MIGOverload Protection ARC-WELDING Circuit Learning to WeldLearning to Weld SELF-SHIELDED Fcaw Welding ARC Gmaw MIG Welding ARC Process SelectionFor Gmaw MIG Process For Fcaw Innershield Process Common MetalsJoint Types and Positions Butt Welds Welding In The Vertical Position PenetrationFillet Welds Vertical-down Welding Machine SET UP for the SELF-SHIELDED Fcaw ProcessWelding Techniques for the SELF- Shielded Fcaw Process Correct Welding Position Correct Electrical Stickout ESO Correct Welding Speed Helpful Hints Practice Machine SET UP for the Gmaw MIG Process Welding Techniques for the Gmaw MIG Process For the SP 170-I, use the following To Correct Poor Penetration in order of impor- tance Troubleshooting WeldsTo Eliminate a Ropy Convex Bead in order of importance To Eliminate Stubbing* in order of importance Proper Gun Handling Application Chart Output PolarityDrive Roll Orientation K464 .035 0.9 mm Innershield Welding Kit AccessoriesOptional Accessories K491 .045 1.2 mm Innershield Welding Kit Replacement Parts Innershield Fcaw Conversion Maintenance Maintenance Safety PrecautionsRoutine Maintenance Gun Cable Cleaning GUN and Cable MaintenanceConfiguration of Components in Wire Feeding System Contact Tip Cable Liner Drive Roll Component Replacement Procedures Changing Drive Roll SP 170-I onlyChanging Drive Roll UWW-170 only Changing Liner Fully seat the liner bushing into the con GUN Handle Parts black trigger GUN Handle Parts red trigger Troubleshooting HOW to USE Troubleshooting Guide Problems Possible Areas Symptoms Misadjustments Recommended Course of Action GAS Flow Problems Welding Problems Wiring WiringPage Need Welding Training? How To Read Shop DrawingsNew Lessons in Arc Welding $700.00 Precaucion Warnung