Lincoln Electric SVM189-B service manual ACCESSORIESC-13, Routine Welding Machine Preparation

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C-13

ACCESSORIESC-13

ROUTINE WELDING MACHINE

PREPARATION

WARNING

ELECTRIC SHOCK CAN KILL.

1.Disconnect input power to the machine.

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2.Machine polarity setting: Set to DC electrode posi- tive polarity per the machine’s Instruction Manual.

3.Gas selection and flow rate: Connect 100% welding grade argon gas supply to the machine’s gas sole- noid valve. Set the supply regulator to deliver a gas flow rate of 20 to 50 SCFH thru the spool gun.]

4.Flip the machine’s wire drive selector switch (behind the access door) to "Magnum 100SG". (See Figure C.4)

FIGURE C.4

PREPARING THE SPOOL GUN

WARNING

ELECTRIC SHOCK CAN KILL.

1.Disconnect input power to the machine.

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2.The Conical Spring is used as the spool brake only when feeding the stronger and harder aluminum alloy 5356. The Conical Spring must be removed from the spool gun whenever using the softer alu- minum alloy 4043.

COMPACT WIRE WELDERS

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Contents SVM189-B Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill ARC Rays can burn For Electrically Welding CuttingIii Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications InstallationSelect Suitable Location Safety PrecautionsStacking TiltingIdentify and Locate Components Table of Contents Operation Section Product Description Product Capabilities OperationCommon Welding Abbreviations Wear eye, ear and body protec- tionSee Figure B.1 Controls and SettingsSee Figure B.2 Drive Roll Tension Thumbscrew Turning See Figure B.3Number Part Number Wire Diameter Drive Roll Drive Roll Part Inner Wire GuideItems Needed for Flux Cored Welding Setting UP and Making a FLUX-CORED WeldConnect Leads and Cables on Load Wire SpoolMachine Figure B.9 025 MIG Conversion Kit K2526-1Shielding GAS Install Shielding GASConnect Leads and Cables on the Machine 11OPERATIONDo not Remove or Conceal Warning Labels 12OPERATIONFigure B.20 Compact Wire Welders Table of Contents Accessories Section K2525-1 Spot Timer Kit AccessoriesK2532-1 Magnum 100SG Spool Gun K2377-1 Small Canvas CoverK520-Utility Cart K2275-1 Welding Cart Unpacking the Spool GUN Technical Specifications Magnum 100SG Spool GUN K2532-1Locating Spool GUN Components Features Safety PrecautionsFigure C.3 Assembly of Items Inside the Magnum Spool GUNRecommended Welding Machines Safety Precautions Welding MachinesSpool GUN Disconnect input power from the machine Spool GUN / Wire Drive Selector Switch InstallationOpen the Machine 11.B. Connect P5 6-pin to harness J8 6-pin Electrical Connections11.C. Connect harness P8 6-pin to board J5 6- pin 544A 543A If Machine does have Optional Spot Timer .A. thru 12.DRE-ASSEMBLE Machine AS Follows Mounting the SwitchDisconnect input power to the machine ACCESSORIESC-13Routine Welding Machine Preparation Preparing the Spool GUNFigure C.5 Loading Aluminum WireFigure C.11 Figure C.17 Connecting the GUN to the Welding MachineTable of Contents Maintenance Section Maintenance Safety Precautions MaintenanceRoutine Maintenance Overload Protection GUN and Cable MaintenanceFor Magnum 100L GUN GUN Handle Parts Changing LinerLiner trim length Major Component Locations Maintenance 1TABLE of CONTENTS-THEORY of Operation Section E-1 General Description Theory of OperationInput Line VOLTAGE, FAN Motor & Main Transformer Figure E.3 Input Power CircuitsFigure E.4 Output Circuits Output CONTROL, Rectification & Voltage FeedbackFigure E.5 TRIGGER, GAS Solenoid & Wire Drive TRIGGER, GAS Solenoid and Wire DriveFigure E.6 SCR Operation SCR OperationElectronic Wire Drive Motor Protection Compact Wire Welders Table of Contents Troubleshooting & Repair HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board Troubleshooting Procedures Wiring Diagram OUTPUT/FEEDING Problems Feeding Problems Welding Problems Maintenance Section Issues Maintenance Section Cone or gas diffuser Test Description Case Cover Removal and Replacement ProcedureMaterials Needed Figure F.1 Case Removal ProcedureGAS Solenoid Test GasSolenoid Leads Wire Drive Motor Test MOT-MOT+ Test ProcedureMain Transformer Test Secondary Test Procedure Secondary Lead Compact Wire Welders FAN Motor Test Figure F.5. Control Board Lead Locations Typical Output Voltage Waveform Machine Loaded Scope SettingsVolts 10Volts 20ms Abnormal Open Circuit Voltage Waveform Control Board Removal and Replacement Procedure See Figure F.7 Nameplate Control Knob Compact Wire Welders Power Module Removal and Replacement Procedure Viewed from Rear of Machine Center Panel PolarityPanel CenterPanelScrews OutputStuds Compact Wire Welders Misc. Hand Tools Dow Corning Fine Steel Wool See Figure F.12 Dow Corning Figure F.12 DOW Corning Application Areas Transformer Compact Wire Welders Wire Drive Motor Removal and Replacement Procedure Lincolnelectric Phillips Mounting Screws Compact Wire Welders FAN Motor Assembly Removal and Replacement Procedure Viewed from Rear of Machine Center Panel CenterPanelScrews Locking Tabs Fan Wire Speed Range Troubleshooting & Repair Retest After Repair 125 AMP UnitsRetest After Repair 140 AMP Units Open Circuit VoltageTroubleshooting & Repair Retest After Repair 180 AMP Units Table of Contents Diagram Section COmpacT WirE WElDErS Wiring DiagramSpool GUN Interface Wiring Diagram Wiring Diagram Thermostat TMP FAN TS1 M20410-3 a COmpacT WirE WElDErSSchEmaTic cOmplETE machiNE m21240 C12 R1Feed R24