Lincoln Electric SVM103-A Retest After Repair, Engine Output, WELDER/GENERATOR OUTPUT1

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F-34

TROUBLESHOOTING & REPAIR

RETEST AFTER REPAIR

Retest a machine:

•If it is rejected under test for any reason that requires you to remove any mechanical part which could affect the machine’s electrical characteristics.

OR

• If you repair or replace any electrical components.

ENGINE OUTPUT

	No Load RPM	Load RPM
Maximum Speed	3725	3650
Minimum Speed	3675	3400

WELDER/GENERATOR OUTPUT1

Output Control	Field Volts	Field Amps	Open Circuit	Load Volts	Load Amps
			Volts
Maximum	43 - 49	4.8 - 5.8	60 - 63	12 - 25	120	- 125
Minimum	–	–	55 - 60	14 - 27	75	- 85

AUXILIARY POWER RECEPTACLE OUTPUT1

	230 Volt Receptacle			115 Volt Receptacle2
Output	Open Circuit	Load Volts	Load Amps	Open Circuit	Load Volts	Load Amps
Control	Volts			Volts
Maximum	255 - 267	215 - 230	18 - 20	127 - 133	112 - 120	18 - 20

1Current Control Dial set at MAXIMUM or GENERATOR.

2Output values of each receptacle can vary within the range shown

12/95 POWER-ARC 4000

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Contents POWER-ARC TM4000 POWER-ARC SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionPrécautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications POWER-ARC InstallationSafety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Cable Size and Length Power ARCElectrical Output Connections Welding Cable ConnectionsPlugs and HAND-HELD Equipment Auxiliary Power ReceptaclesCable Installation Machine GroundingCircuit Breakers Premises WiringType Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARCTable of Contents Operation Section General Description Safety InstructionsOperation Operating InstructionsWelding Capability Operational Features and ControlsDesign Features Advantages Recommended ApplicationsGENERATOR/WELDER Controls Controls and SettingsGasoline Engine Controls Figure B.2 Gasoline Engine ControlsEngine Operation Before Starting the EngineStarting the Engine Stopping the Engine Running the EngineBREAK-IN Period To USE the Generator AS AN Auxiliary Power Supply Generator OperationGeneral Information Table B.3 Generator Power Applications To USE the POWER-ARC 4000 for Welding Welding OperationAfter YOU Finish the Weld Material Thickness Electrode Type Size Setting Welding GuidelinesStick Welding ARC Welding CircuitCorrect WAY to Strike AN ARC 12/95 POWER-ARCFour Factors of Successful Welding ElectrodeCorrect Welding Speed Correct ARC LengthTable of Contents Accessories OPTIONS/ACCESSORIES Lincoln Electric AccessoriesBriggs and Stratton Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceFigure D.2 Clean Rotating SCREEN/FINGER GUARD/DEBRIS Guard Figure D.4 SET Spark Plug GAP Table D.2 Engine Maintenance Parts GENERATOR/WELDER MaintenancePart Part Number Figure D.6. Major Component Locations Table of Contents Theory of Operation Section ENGINE, EXCITATION, Rotor and Stator Theory of OperationFigure E.3 Field Excitation and Auxiliary Power Rotor Field Feedback and Auxiliary PowerWeld Winding and Reactor Auxiliary Power Overcurrent ProtectionTable of Contents Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairOutput Problems Troubleshooting GuideOr contact your local Lincoln Local Lincoln Electric Authorized Troubleshooting & Repair Troubleshooting & Repair Engine Problems Engine Problems Welding Problems Rotor Voltage Test Test DescriptionMaterials Needed Ground Stud Lead 200A Connection Output Panel Test ProcedureRotor Resistance Test Rings SlipCable TIE Brushes Figure F.3 Brushes Retained with Cable TIEEngine Throttle Adjustment Test Oscilloscope Method MarkStrobe-tach Method Frequency Counter MethodNUT Figure F.5 Location of Engine Throttle Adjustment NUTScope 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 Description Brush Removal and ReplacementFigure F.6 Brushes Retained with Cable TIE ProcedureProcedure Rheostat Removal and Replacement Figure F.7 Rheostat Removal Capacitor AND/OR Diode Bridge Removal Replacement Procedure Capacitor Removal and Replacement Capacitor AND/OR Diode Bridge Removal and ReplacementProcedure Diode Bridge Removal and Replacement Instructions STATOR/ROTOR Removal and ReplacementTerminals Stator Removal ProcedureTIE Wrap OutputFigure F.10 Stator END Bracket Support and THRU-BOLTS Thru Bolts Support Nuts POWER-ARCRotor Removal Procedure Reassembly ProcedureRotor THRU-BOLT Rotor Feeler GaugeWELDER/GENERATOR OUTPUT1 Auxiliary Power Receptacle OUTPUT1Retest After Repair Engine OutputPOWER-ARC Table of Contents Electrical DiagramsSection G POWER-ARC Electrical DiagramPOWER-ARC POWER-ARC