Troubleshooting | Lincoln Electric SVM103-C guide

3. Make sure lead 5 (white) is grounded to the machine frame (zero ohms).

4. Check for an open or grounded auxiliary winding in the stator, 6 to 3. See the Wiring Diagram.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-800-833-9353

POWER-ARC 4000

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F-6			TROUBLESHOOTING				F-6
			TROUBLESHOOTING

	TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual

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

				OUTPUT PROBLEMS

No auxiliary power - welding output			1.	Check circuit breakers CB1 and	1.	Check the auxiliary power re-
is normal - engine runs normally.				CB2. Reset if tripped.		ceptacles and associated wires
			2.	Make sure that the control rheo-		for loose or faulty connections.
			2.	Make sure that the control rheo-
				stat (R1) is set at “GENERATOR”	2.	Check the continuity (zero ohms)
				(maximum).		of leads 3, 3A, 3B; 6, 6A, 6B, 6C;
			3.	Check for loose or faulty plug at		and 5, 5A, 5B from the recepta-
			3.	Check for loose or faulty plug at		cles to the stator windings. See
				power receptacle.		cles to the stator windings. See
				power receptacle.		the Wiring Diagram.
						the Wiring Diagram.

Image 54

Lincoln Electric SVM103-C service manual Troubleshooting

Contents

POWER-ARC Safety Depends on You Safety California Proposition 65 Warnings Electric Shock can kill Welding Sparks can cause fire or explosion Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications POWER-ARC Safety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Spark Arrester Cert. Kool Bore Cable Size for Electrical Output ConnectionsWelding Cable Connections 125 amp Auxiliary Power Receptacles Machine GroundingPlugs and HAND-HELD Equipment Premises Wiring Circuit Breakers These Devices Without POWER-ARC Table of Contents Operation Section Operating Instructions Safety InstructionsOperation General Description Recommended Applications Operational Features and ControlsDesign Features Advantages Welding Capability Controls and Settings GENERATOR/WELDER Controls Gasoline Engine Controls 20 AMP, 120 Volt Duplex Receptacle Engine Operation Before Starting the EngineStarting the Engine For a HOT Engine To USE the Generator AS AN Auxiliary Power Supply Generator OperationGeneral Information Table B.1 Generator Power Applications Suggested Power Applications Running Watts Start-up Watts Welding Operation Welding Guidelines Table B.2 Welding APPLICATIONS/ELECTRODE Selection Guide Operation What Happens in the Arc? Correct Welding Position Correct Arc Length Do the following PracticeUse the following Butt Welds Fillet Welds Penetration Vertical-Up Welding Vertical-Down Welding Overhead Welding Hardfacing To Reduce WearWelding Sheet Metal Welding Cast Iron Cast Iron Plate Preparation High-Speed Group AWS E6013 Out-of-Position Group AWS E6011Low Hydrogen Group Stable-Arc E7018 Table of Contents Accessories Section Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Section Engine Maintenance MaintenanceRoutine and Periodic Maintenance Engine Adjustments Figure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Table D.1 Engine Maintenance Schedule GENERATOR/WELDER Maintenance Do not attempt to polish slip rings while engine is running Figure D.6. Major Component Locations Table of Contents Theory of Operation Section Theory of Operation ENGINE, EXCITATION, Rotor and Stator Rotor Field Feedback and Auxiliary Power Figure E.3 Field Excitation and Auxiliary Power Auxiliary Power Overcurrent Protection Weld Winding and Reactor Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting Guide Troubleshooting Output Problems Or contact your local Lincoln Electric Authorized Field SerVice Facility Field Service Facility Local Lincoln Electric Authorized Troubleshooting Rotor Resistance Test Engine Problems Troubleshooting Engine Throttle Adjustment Test Description This procedure takes approximately 15 minutes to performRotor Voltage Test Materials Needed Test Procedure Rotor Voltage Test This procedure takes approximately 25 minutes to perform Rotor Resistance Test Rotor Resistance Test Figure F.3 Brushes Retained with Cable TIE Engine Throttle Adjustment Test This procedure takes approximately 20 minutes to perform Strobe-tach Method Frequency Counter MethodOscilloscope Method Wing NUT High Speed Stop Screw Scope Settings Normal Open Circuit Weld Voltage WaveformHigh Idle no Load Normal Open Circuit Voltage Waveform 115 VAC Supply Typical Weld Output Waveform Machine LoadedMachine Loaded to 125 Amps AT 23 VAC Brush Removal and Replacement Description Brush Removal and Replacement Procedure Procedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal and Replacement This procedure takes approximately 35 minutes to perform Procedure Capacitor Removal and REPLACE- Ment Figure F.8 Location and Discharging the Field Capacitor Procedure Field Diode Bridge Removal and Replacement Figure F.8A Field Diode Bridge Location STATOR/ROTOR Removal and Replacement This procedure takes approximately 3 hours to performInstructions STATOR/ROTOR Removal and Replacement Troubleshooting & Repair Rotor Removal Procedure Figure F.12 Checking ROTOR-STATOR AIR GAP Engine Output Auxiliary Power Receptacle OUTPUT1Retest After Repair WELDER/GENERATOR OUTPUT1 Return to Section TOC Table of Contents Diagrams Section Diagrams Wiring Diagram Power ARC DIAGRAMSG-3 DIAGRAMSG-4 Dimension Print Power ARC Return to Section TOC SVM Error Reporting Form