Mark, Strobe-tach Method | Lincoln Electric SVM103-A specification

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F-16

TROUBLESHOOTING & REPAIR

ENGINE THROTTLE ADJUSTMENT TEST (continued)

FIGURE F.4 - BLOWER PADDLE MARKED FOR STROBE-TACH METHOD

MARK

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TEST PROCEDURE

This test can be conducted by any of three methods.

Strobe-tach Method:

1.Stop the engine and remove the spark plug wire to prevent accidental kickback or starting.

2.With the black or red marking pencil, place a mark on one of the blower paddles, which can be reached through the vent slots in the end bracket. See Figure F.4.

3.Connect the strobe-tach according the manufacturer’s instructions.

4.Reconnect the spark plug wire and start the engine. Direct the strobe-tach light on the blower paddle and synchronize it to the rotating mark. The tach should read 3700 RPM.

5.Use the 7/16 wrench to turn in the spring- loaded adjustment nut. Increase the high idle speed until the tach reads 3700 RPM. See Figure F.5 for location of the adjust- ment nut.

Frequency Counter Method:

1.Plug the frequency counter into one of the 115 VAC auxiliary receptacles.

2.Start the engine and check the frequency counter. At the proper RPM (3700), the counter should read 61.7 Hz.

3.Use the 7/16 wrench to turn in the spring- loaded adjustment nut. Increase the high idle speed until the frequency counter reads 61.7 Hz. See Figure F.5 for location of the adjustment nut.

Oscilloscope Method:

1.Connect the oscilloscope according to the manufacturer’s instructions. At 3700 RPM, the waveform should exhibit a period of 16.2 milliseconds. Refer to the NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM (115 VAC SUPPLY) HIGH IDLE - NO LOAD in this section of the manual.

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POWER-ARC 4000

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Lincoln Electric SVM103-A service manual Mark, Strobe-tach Method, Frequency Counter Method, Oscilloscope Method

Contents

POWER-ARC TM4000 POWER-ARC Safety Electric Shock can kill Iii Welding Sparks can cause fire or explosion Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications POWER-ARC Installation Safety Precautions Location and VentilationStoring PRE-OPERATION Engine Service Electrical Output Connections Power ARCWelding Cable Connections Cable Size and Length Cable Installation Auxiliary Power ReceptaclesMachine Grounding Plugs and HAND-HELD Equipment Circuit Breakers Premises Wiring Type Common Electrical Devices Possible Concerns Table A.2 Electrical Device USE with the POWER-ARC Table of Contents Operation Section Operation Safety InstructionsOperating Instructions General Description Design Features Advantages Operational Features and ControlsRecommended Applications Welding Capability GENERATOR/WELDER Controls Controls and Settings Gasoline Engine Controls Figure B.2 Gasoline Engine Controls Engine 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 Circuit Four Factors of Successful Welding 12/95 POWER-ARCElectrode Correct WAY to Strike AN ARC Correct Welding Speed Correct ARC Length Table of Contents Accessories OPTIONS/ACCESSORIES Lincoln Electric AccessoriesBriggs and Stratton Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic Maintenance Figure 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 Operation Figure E.3 Field Excitation and Auxiliary Power Rotor Field Feedback and Auxiliary Power Weld Winding and Reactor Auxiliary Power Overcurrent Protection Table of Contents Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & Repair Output Problems Troubleshooting Guide Or 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 Procedure Rotor Resistance Test Rings Slip Cable TIE Brushes Figure F.3 Brushes Retained with Cable TIE Engine Throttle Adjustment Test Strobe-tach Method MarkFrequency Counter Method Oscilloscope Method NUT Figure F.5 Location of Engine Throttle Adjustment NUT 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 Description Brush Removal and Replacement Figure F.6 Brushes Retained with Cable TIE Procedure Procedure 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 Replacement Procedure Diode Bridge Removal and Replacement Instructions STATOR/ROTOR Removal and Replacement TIE Wrap Stator Removal ProcedureOutput Terminals Figure F.10 Stator END Bracket Support and THRU-BOLTS Thru Bolts Support Nuts POWER-ARC Rotor Removal Procedure Reassembly ProcedureRotor THRU-BOLT Rotor Feeler Gauge Retest After Repair Auxiliary Power Receptacle OUTPUT1Engine Output WELDER/GENERATOR OUTPUT1 POWER-ARC Table of Contents Electrical DiagramsSection G POWER-ARC Electrical Diagram POWER-ARC POWER-ARC