Lincoln Electric SVM207-A service manual Wiring Diagram

Page 46

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F-8

TROUBLESHOOTING AND REPAIR

F-8

 

Observe Safety Guidelines detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

RECOMMENDED

(SYMPTOMS)

MISADJUSTMENT(S)

COURSE OF ACTION

 

 

 

 

 

 

ENGINE PROBLEMS

 

 

 

Engine will not idle down to low

1. Make sure the Engine Control

1. With the Engine Control Switch

speed. Machine has normal weld

Switch (S3) is in the “AUTO”

in the “AUTO” position, check

output and auxiliary power.

position.

for the presence of 12VDC at

 

2. Make sure there is NOT an exter-

leads #213 to #215 located at

 

the Idler Solenoid. If 12VDC is

 

nal load on the weld terminals or

 

present and the Idler Solenoid is

 

the auxiliary power receptacles.

 

not activating, then the solenoid

 

 

 

 

may be faulty or there is a

 

 

mechanical

restriction

prevent-

 

 

ing it from functioning.

 

 

 

2. If there is NOT 12VDC at leads

 

 

#213 to #215, then test for

 

 

12VDC from lead #213 to

 

 

ground (lead #5). See Wiring

 

 

Diagram. If 12VDC is present,

 

 

then check lead #215 for conti-

 

 

nuity (zero ohms) from the Idler

 

 

Solenoid to the Printed Circuit

 

 

Board plug 3J1. If lead #215 is

 

 

OK, then the Printed Circuit

 

 

Board may be faulty. Replace

 

 

3. If there is NOT 12VDC from lead

 

 

#213 to ground (lead #5), then

 

 

check the

Engine

Control

 

 

Switch (S3) for proper operation

 

 

and associated wires for loose

 

 

or faulty connections. See the

 

 

Wiring Diagram.

 

Engine will not crank or cranks very 1.

Check for loose or faulty battery

1.

If the battery is replaced or tests

slow.

cable connections.

 

good, then the charging circuit

2.

The battery may be faulty.

 

may be faulty. Perform the

 

Charging Circuit Test.

 

 

 

3.

Check the ammeter to see if the

2.

The starter motor or starter

 

battery is charging. If not, the

 

solenoid may be faulty.

 

charging circuit may be defec-

 

 

3.

The Engine may be hard to

 

tive.

 

 

 

crank due to a mechanical fail-

 

 

 

ure in the engine.

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 1-888-935-3877.

RANGER® 3 PHASE

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Contents Ranger 3 Phase Safety Ranger 3 PhaseFumes 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 Auxiliary Power InstallationTechnical Specifications Ranger 3 Phase K2337-1 & K2337-2 Height Width Depth WeightSpark Arrester Safety PrecautionsMachine Grounding TowingVehicle Mounting PRE-OPERATION ServiceGasoline Can cause fire or explosionHigh Altitude Operation Welding Output CablesTotal Combined Length of Electrode and Work Cables Angle of OperationInstructions Gfci Duplex Receptacles Auxiliary PowerVolt 3 Phase Receptacle with Ground 120/240 Volt Dual Voltage ReceptacleAuxiliary Power While Welding Ground WireStandby Power Connections TABLE A.1 Simultaneous Welding and PowerConnection of Ranger 3 Phase to Premises Wiring Figure A.3USE These Devices with a Ranger 3 Phase Electrical Device USE with the Ranger 3 PhaseDevices Without Addi Tional Resistive Type Loads Table of Contents Operation Section GENERAL DESCRIPTION Engine SwitchOperation Welder Controls Function and OperationRange Switch Polarity SwitchRanger 3 Phase Approximate Fuel Consumption Control DialStick Constant Current Welding Wire Feed Welding Processes Constant VoltageWelding Process TIG Constant Current WeldingStick Auto Starting the Engine STARTING/SHUTDOWN InstructionsBREAK-IN Period Stopping the EngineTable of Contents Accessories Section Accessories K1745-1 Welding GAS Cylinder LPG Tank HolderStick WIRE FEEDRECOMMENDED EQUIPMENT TIGRanger 3 Phase Table of Contents Maintenance Section Maintenance Safety PrecautionsOIL Filter Change Gfci Receptacle Testing and RESET- Ting ProcedureAIR Cleaner and Other Maintenance Slip Rings Do not attempt to polish slip rings while engine is runningFram CA79 BatteryEngine Maintenance Parts KOHLER C23S CHAMPION RC12YCMAINTENANCED-5 Figure D.1 Major Component LocationRanger 3 Phase 1TABLE of CONTENTS-THEORY of Operation Section E-1 General Description Theory of OperationEngine Components and Operation ROTOR, Stator & Control Circuits Figure E.2 ROTOR, Stator and Control CircuitsWeld Circuitry Figure E.2 Weld Circuitry1TABLE of Contents Troubleshooting and Repair F-1 Troubleshooting and Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Return to SectionDiagram Perform the Output Bridge Test Gram Wiring Wiring Diagram Troubleshooting and Repair Figure F.4 and/or the Wiring Test Description Rotor Voltage Test ProcedureMaterials Needed Test Procedure Rotor Voltage TestRotor Resistance Test TEST PROCEDURE Figure F.2 Slip RingsAuxiliary and Field Winding Test Auxiliary Windings To test the 480 VAC 3 Phase windingProbes Reading To test the 120 VAC windingFigure F.4 Control PC Board Field WindingRanger 3 Phase Output Rectifier Bridge Test Figure F.5 OUTPUT RECTIFIER + Meter Lead Meter ReadingToroid 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 Normal Open Circuit Voltage Waveform 115 VAC Supply Scope SettingsHigh Idle no Load Output Control AT Maximum Typical DC Weld Output Waveform CV Mode Machine LoadedTypical DC Weld Output Waveform CC Mode Machine Loaded to 200 Amps AT 26 VDCTypical AC Weld Output Waveform Machine Loaded to 225 Amps AT 25 VDCAbnormal 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 Brush Removal and Replacement Procedure ProcedureBrush Assembly Bracket Bolts Ranger 3 Phase Printed Circuit Board Removal Replacement Procedure Printed Circuit Board Removal Figure F.10 Door RemovalOutput Rectifier Bridge Removal Replacement Procedure Output Rectifier Bridge Removal Figure F.11 OUTPUT RECTIFIERENGINE/ROTOR Removal and Replacement Procedure ENGINE/ROTOR Removal and Replacement Procedure Procedure Rotor Removal Procedure Figure F.13 Engine and Rotor Removed from StatorReassembly Procedure Retest After Repair Table of Contents Diagram Section Ranger 3-PHASE RaNGEr 3 phaSESchEmaTic cOmplETE machiNE l12259 L12259ElEcTrical DiaGramS
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