Output Capacitors Replacement | Lincoln Electric SVM167-A guide

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F-38	TROUBLESHOOTING AND REPAIR	F-38

OUTPUT CAPACITORS REPLACEMENT (Continued)

PROCEDURE

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1.Using a 3/8” nutdriver, remove the lower right side case wraparound cover. See Figure F.14.

2.Locate capacitor bank. See Figure F.14.

3.Label and remove the five leads connected to the capacitor bank using a 1/2” wrench. Note washer position upon removal. See Figure

F.15.

4.Using a 3/8” nutdriver, remove the three capac- itor bank nuts and lock washers from the three mounting bolts. See Figure F.15.

5.Remove the capacitor bank assembly from the machine.

6.Place the new capacitor bank into its proper location inside the machine.

7.Replace the three 3/8” nuts and lock washers previously removed.

8.Using a 1/2” wrench, reconnect the five labeled leads and associated washers previously removed.

9.Replace the lower right side case wraparound cover previously removed.

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FIGURE F.14. - CAPACITOR BANK LOCATION

LOWER RIGHT

CASE WRAPAROUND

COVER

CAPACITOR BANK

ASSEMBLY

POWER MIG® 215

Image 74

Lincoln Electric SVM167-A service manual Output Capacitors Replacement, Figure F.14. Capacitor Bank Location

Contents

Power MIG Safety Depends on You Safety California Proposition 65 Warnings Electric Shock can kill ARC Rays can burn Can be dangerous Iii Welding and Cutting Sparks can cause fire or explosionCylinder may explode if damaged Précautions DE Sûreté Sûreté Pour Soudage a L’Arc Master Table of Contents for ALL Sections Table of Contents Installation SECTION Installation Technical Specifications Power MIG Installation Safety PrecautionsUncrating the Power MIG Location Output Polarity Connections Shielding GAS GUN and Cable InstallationAUXILIARY POWER RECEPTACLES Cylinder may explode if damaged Power MIG Operation SECTION OPERATIONB-2 Wear eye, ear and body protec- tion Operation To Start the Welder Procedure for Changing Drive AND IDLE Roll SetsWire Reel Loading READI-REELS, Spools or Coils Wire Drive Configuration Feeding Wire ElectrodeIdle Roll Pressure Setting Making a Weld Figure B.2b FAN Control Avoiding Wire Feeding ProblemsWire Feed Overload Protection Input Line Voltage Variations Power MIG Accessories SECTION Accessories Making a Weld with the Spool GUN 3ACCESSORIESC-3Installed Adapter KIT and Spool GUN Power MIG Maintenance SECTION Maintenance Liner Removal and Replace Ment Table D.1 GUN Handle Disassembly English Metric Description Size Figure D.2 Major Component Locations Power MIG Line Switch Theory of Operation SECTION Figure E.2 Input Power Circuit Theory of Operation Output Rectification Contactor and Control Board Figure E.3 Control Circuits Control BOARD, GUN Trigger and Wire Drive Motor Figure E.4 Optional Circuits Thermal and Overload Protection Wirefeed Overload ProtectionProtective Devices and Circuits Power MIG TROUBLESHOOTING AND REPAIR SECTION Troubleshooting and Repair How To Use Troubleshooting Guide PC Board Troubleshooting Procedures Perform the Main Transformer Perform the Output Contactor Your body These capacitors is toxicAvoid contact with any portion Function Problems Wire Speed Potentiometer Test Welding Problems Weld bead is narrow or ropy Make sure the welding proce Materials Needed Main Transformer TestTest Description Main Transformer Test Test ProcedureON/OFF Power Switch will be hot during these tests X10 Table F.1. Test Points Input Voltage Test Points Wire Drive Motor and Wire Speed Potentiometer Test Black White VDC Test for Feedback Voltage to Control Board1109 a Power MIG Output Bridge Rectifier Test Negative Lead Output Bridge Rectifier Test Contactor Test Contactor Test Figure F.7. Contactor Terminals and Leads Volts 10.0 Typical Output Voltage Waveform Machine Loaded MAX TAP G Volts 20.0 Normal Open Circuit Voltage Waveform MAX TAP G Machine Loaded to 180 Amps AT 16 VDC Scope Settings Volts 20.0 Control Board Replacement Description Control Board Replacement Procedure Wire Drive Motor Assembly Replacement Wire Drive Wire Drive Motor Assembly Replacement Bolt Gas Hose TOC Output Diode Bridge Rectifier Replacement Output Diode Bridge Rectifier Mounting Bracket Mounting Bolts Rectifier Power MIG Output Capacitors Replacement Output Capacitors Replacement Figure F.14. Capacitor Bank Location Lead Mounting Bolts Nuts Lock washers 3 places Power MIG 41TROUBLESHOOTING and Repair F-41 Main Transformer Replacement Main Transformer Replacement See Figure F.17 Replacement Figure F.17. Leads X9, X10, 104B,104C, & H1B X2 X3 X4 X5 X6 X7 Lead Power MIG FAN BLADE/MOTOR Replacement FAN BLADE/MOTOR Replacement Perform the Output Capacitor Bank Removal Procedure Output Contactor Replacement Output Contactor Replacement Figure F.24 Mounting Bolts Retest After Repair Electrical Diagrams Table of Contents Electrical Diagrams Section Power MIG 215 208/220/230V POWEr miG Power MIG 215 208/220/230V for Codes 11099 SchEmaTic cOmplETE machiNE cODE 11247 l12308 pG1 L12308 SchEmaTic cOmplETE machiNE cODE 11247 l12308 pG2 ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS ElEcTrical DiaGramS