Lincoln Electric SVM104-A service manual To Section TOC

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TROUBLESHOOTING & REPAIR

F-48

FAN BLADE AND FAN MOTOR REMOVAL/REPLACEMENT

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9.Pull the rubber air line hose into the machine out of the rubber grommet. Be sure to keep the Case Back Assembly support- ed. Allow it to lean out away from the machine at about a 450 angle so you have plenty of room to work on the fan blade and fan motor.

10.Remove the fan blade. Note fanblade position on motor shaft for reference when replacing fan.

a.Loosen the fan blade clamp using a slot head screw- driver or 5/16” nut driver. Do not completely unscrew the clamp.

b.Slide the fan blade and clamp off the motor shaft.

NOTE: See Step 13 when reinstalling the fan.

11.Remove the fan motor.

a.Loosen and remove the two nuts, flat washers, and lock washers from the motor mounting bracket using an 11/32” open end wrench. When the motor is free from the mounting bracket, place it carefully on the bottom of the machine.

b. Remove the Case Back Assembly.

c.Cut the wire wraps bundling the motor leads.

d.Cut the motor leads or remove the wire connectors to remove the motor.

12.Install replacement motor in reverse order of removal.

13.Install fan blade. When installing the fan blade, be sure the clamp is placed on the motor side of the shaft.

a.Slide the fan .25” past the end of the shaft and tighten the clamp.

b.Spin the fan to be sure it is free to rotate.

14.Reassemble the remaining components in reverse order of removal.

PRO-CUT 60

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Contents SVM104-A Electric Shock can kill SafetyWelding or Cutting Sparks can cause fire or explosion Electric and Magnetic Fields IiiSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Technical Specifications PRO-CUT InstallationSelect Proper Location Safety Precautions Electric Shock can KillHigh Frequency Interference Protection TiltingInput Electrical Connections ➁ ➂ ➀ ➃Ground Connection Fuse and Wire SizesInput Power Supply Connections AIR Input Connections 208/230/460 VAC machines Reconnect ProcedureWork Output ConnectionsOperation Section Table of ContentsElectric Shock can kill OperationDesign Features Advantages Operational Features and ControlsGeneral Description Recommended Processes and EquipmentLimitations Controls and SettingsCutting and Gouging Capability ON/OFF Operating StepsUse Pilot Arc Properly Cutting Procedure RecommendationsCutting Thin Gauge Sheet Metal Cutting Expanded Metal Figure B.3 -- Gouging Metal Return to Section TOC Accessories Section OPTIONS/ACCESSORIES AccessoriesSection D Maintenance SectionSafety Precautions MaintenanceCapacitor Discharge Procedure Procedure DescriptionFigure D.1 Capacitor Discharge Procedure ProcedurePerform the following daily Routine and Periodic MaintenanceMaintenance PRO-CUT Theory of Operation Section Theory of Operation SectionInput Line Voltage and Main Transformer Theory of OperationFigure E.3 Output Rectification, Control and Feedback Output Rectification Control and FeedbackHigh Voltage / High Pilot ARC Theory of OperationFigure E.7 Transistor Switching Operation Transistor Switching OperationThermal Protection Pulse Width ModulationThermostat Thermal SensorPRO-CUT Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairBoard can be dam- aged by static electricity Troubleshooting PC Board Troubleshooting ProceduresTroubleshooting Guide PRO-CUT Troubleshooting GuideConnect ALL Input Disconnect ALL Input Machine Troubleshooting & Repair Function Problems AIR Flow Problems Cutting Problems Power Board Connector Location Control Board Connector LocationCapacitor Discharge Procedure Insulated Pliers Gloves Figure F.19-Capacitor Discharge ProcedureTest Description Work Torch and Cable Resistance Test ProcedureFigure F.4 Torch and Cable Resistance Test Points Internal Trigger Safety Circuit TestReturn to Return to Section TOC Figure F.6-Control Board and 4-pin Locations Test Description Transistor Module TestTest Procedure J21 Main Transformer Test Test a Main Secondary Voltage Test Test ProcedureCR2 Power Board Test Figure F.11-Power Board Test Points Transistor Module Test Troubleshooting & Repair High Voltage Transformer and Circuit Test Figure F.12-High Voltage Test Component Locations Test C Test Resistance of High Voltage Transformer Secondary REMOVAL/REPLACEMENT Description ON/OFF Power Switch Removal➂ ➃ ➄ REMOVAL/REPLACEMENT ProcedureControl Board Removal To Section TOC Power Board Removal Figure F.14-Power Board Removal/Replacement Return to Return to Section TOC Transistor Module Removal 41TROUBLESHOOTING & RepairRemoval Procedure SCR Module Removal Socket Head CAP Screws Torque to Power Board REMOVAL/ Replacement Procedure FAN Blade and FAN Motor REMOVAL/REPLACEMENT Figure F.17-Fan Blade & Fan Motor To Section TOC Torch Head REMOVAL/REPLACEMENT Figure F.18-Torch Head Removal/Replacement Section TOC Retest After Repair Maximum Acceptable Output Voltage AT Minimum Output SettingInput Idle Amps Recommended Meters for Machine Output TestsPRO-CUT Electrical Diagrams Electrical DiagramsStatus Board Schematic Diagram H E M a T I C Bypass Board Schematic Diagram M15603Bypass Board Schematic Diagram M17322 PRO-CUT Electrical Diagrams Identification Control BoardPower Board Identification Power BoardM15601 Status Status PC BoardM15601 Status PC BoardBypass Bypass PC Board M15603Bypass PC Board M15603 Bypass PC Board M17322 Bypass PC Board M17322 0 , J 2 Wiring Diagram for Codes 10112Wiring Diagram for Codes 9819 Control Board Schematic Drawing G2015 Power Board Schematic Design SVM Error Reporting Form