TROUBLESHOOTING & REPAIR
INPUT FILTER CAPACITOR DISCHARGE PROCEDURE
WARNING
Service and repair should be performed by only Lincoln Electric factory trained person- nel. Unauthorized repairs performed on this equipment may result in danger to the tech- nician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical 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 trou- bleshooting assistance before you proceed. Call
DESCRIPTION
This procedure will drain off any charge stored in the two large capacitors that are part of the power board assembly. This procedure MUST be performed, as a safety precau- tion, before conducting any test or repair procedure that requires you to touch internal components of the machine.
MATERIALS NEEDED
Volt/Ohmmeter (Multimeter) 5/16” Nut driver Insulated gloves Insulated pliers
High wattage resistor - 25 to 1000 ohms, 25 watts minimum
