Lincoln Electric SVM207-A service manual Low Idle Adjustment SolenoidNut Housing

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F-27	TROUBLESHOOTING AND REPAIR	F-27

ENGINE THROTTLE ADJUSTMENT TEST (continued)

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FIGURE F.7

HIGH IDLE ADJUSTMENT NUT

Throttle linkage

Choke

Cable

3/8" High Idle

Adjustment 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 HIGH IDLE (3700 RPM), the counter should read 60.8 to 62.5 Hz. At LOW IDLE (2200 RPM), the counter should read 38.3 to 41.6 Hz. Note that these are median measurements; hertz readings may vary slightly above or below.

3.If either of the readings is incorrect, adjust the throttle as follows:

Adjust HIGH IDLE: Use the 3/8” wrench to turn the spring-loaded adjustment nut. See Figure F.7 for location of the adjustment nut. Turn the nut clock- wise to increase HIGH IDLE speed. Adjust the speed until the frequency reads between 60.8 and 62.5 Hz.

FIGURE F.8

LOW IDLE ADJUSTMENT NUT

3/8" Low Idle

Adjustment

SolenoidNut

Housing

Adjust LOW IDLE: First make sure there is no load on the machine. Set the IDLER switch to AUTO and wait for the engine to change to low idle speed. Use the 3/8” wrench to adjust the solenoid nut, which changes the amount of throw in the throttle lever arm. See Figure F.8 for location of the adjust- ment nut. Adjust the nut until the frequency reads between 38.3 and 41.6 Hz.

RANGER® 3 PHASE

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Contents Ranger 3 Phase Ranger 3 Phase SafetyFumes and Gases Welding Cutting Précautions DE Sûreté Safety Methods of Reducing Emissions Mains Supply Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Ranger 3 Phase K2337-1 & K2337-2 InstallationAuxiliary Power Height Width Depth WeightMachine Grounding Safety PrecautionsSpark Arrester TowingGasoline PRE-OPERATION ServiceVehicle Mounting Can cause fire or explosionTotal Combined Length of Electrode and Work Cables Welding Output CablesHigh Altitude Operation Angle of OperationInstructions Volt 3 Phase Receptacle with Ground Auxiliary PowerGfci Duplex Receptacles 120/240 Volt Dual Voltage ReceptacleStandby Power Connections Ground WireAuxiliary Power While Welding TABLE A.1 Simultaneous Welding and PowerFigure A.3 Connection of Ranger 3 Phase to Premises WiringDevices Without Addi Tional Resistive Type Loads Electrical Device USE with the Ranger 3 PhaseUSE These Devices with a Ranger 3 Phase Table of Contents Operation Section Operation Engine SwitchGENERAL DESCRIPTION Welder Controls Function and OperationRanger 3 Phase Approximate Fuel Consumption Polarity SwitchRange Switch Control DialWelding Process Wire Feed Welding Processes Constant VoltageStick Constant Current Welding TIG Constant Current WeldingStick Auto BREAK-IN Period STARTING/SHUTDOWN InstructionsStarting the Engine Stopping the EngineTable of Contents Accessories Section K1745-1 Welding GAS Cylinder LPG Tank Holder AccessoriesRECOMMENDED EQUIPMENT WIRE FEEDStick TIGRanger 3 Phase Table of Contents Maintenance Section Safety Precautions MaintenanceAIR Cleaner and Other Maintenance Slip Rings Gfci Receptacle Testing and RESET- Ting ProcedureOIL Filter Change Do not attempt to polish slip rings while engine is runningEngine Maintenance Parts KOHLER C23S BatteryFram CA79 CHAMPION RC12YCFigure D.1 Major Component Location MAINTENANCED-5Ranger 3 Phase 1TABLE of CONTENTS-THEORY of Operation Section E-1 Engine Components and Operation Theory of OperationGeneral Description Figure E.2 ROTOR, Stator and Control Circuits ROTOR, Stator & Control CircuitsFigure E.2 Weld Circuitry Weld Circuitry1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting and RepairReturn to Section PC Board Troubleshooting ProceduresDiagram Perform the Output Bridge Test Gram Wiring Wiring Diagram Troubleshooting and Repair Figure F.4 and/or the Wiring Materials Needed Rotor Voltage Test ProcedureTest Description Rotor Voltage Test Test ProcedureRotor Resistance Test Figure F.2 Slip Rings TEST PROCEDUREAuxiliary and Field Winding Test Probes Reading To test the 480 VAC 3 Phase windingAuxiliary Windings To test the 120 VAC windingField Winding Figure F.4 Control PC BoardRanger 3 Phase Output Rectifier Bridge Test + Meter Lead Meter Reading Figure F.5 OUTPUT RECTIFIERToroid Test Toroid Test Charging Circuit Test Voltage Regulator AC Lead DC Lead Engine Throttle Adjustment Test Engine Throttle Adjustment Test Low Idle Adjustment SolenoidNut Housing Figure F.9 115VAC Supply Waveform High IDLE- no Load High Idle no Load Output Control AT Maximum Scope SettingsNormal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded Typical DC Weld Output Waveform CV ModeMachine Loaded to 200 Amps AT 26 VDC Typical DC Weld Output Waveform CC ModeMachine Loaded to 225 Amps AT 25 VDC Typical AC Weld Output WaveformAbnormal Open Circuit Weld Voltage Waveform CV Mode Abnormal Open Circuit DC Weld Voltage Waveform Normal Open Circuit Weld Voltage Waveform CV Mode Normal Open Circuit DC Weld Voltage Waveform CC Mode Normal Open Circuit AC Weld Voltage Waveform Ranger 3 Phase Brush Removal and Replacement Procedure Procedure Brush Removal and Replacement ProcedureBrush Assembly Bracket Bolts Ranger 3 Phase Printed Circuit Board Removal Replacement Procedure Figure F.10 Door Removal Printed Circuit Board RemovalOutput Rectifier Bridge Removal Replacement Procedure Figure F.11 OUTPUT RECTIFIER Output Rectifier Bridge RemovalENGINE/ROTOR Removal and Replacement Procedure ENGINE/ROTOR Removal and Replacement Procedure Procedure Figure F.13 Engine and Rotor Removed from Stator Rotor Removal ProcedureReassembly Procedure Retest After Repair Table of Contents Diagram Section RaNGEr 3 phaSE Ranger 3-PHASEL12259 SchEmaTic cOmplETE machiNE l12259ElEcTrical DiaGramS