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F-23 F-23
TROUBLESHOOTING & REPAIR
CHOPPER MODULE CAPACITOR DISCHARGE PROCEDURE
WARNING
Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid elec- trical shock, please observe all safety notes and precautions detailed throughout this manual. If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshoot- ing assistance before you proceed. Call
TEST DESCRIPTION
This procedure will insure that the large capacitors in the chopper module have been dis- charged. This procedure should be performed whenever work is to be attempted on or near the chopper module.
MATERIALS NEEDED
Miscellaneous hand tools
Volt/Ohmmeter
Resistor
Lincoln part
Jumper leads
Wiring Diagram