Chopper Module Capacitor Discharge Procedure - Lincoln Electric Ranger 305D Service Manual

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CHOPPER MODULE CAPACITOR DISCHARGE PROCEDURE

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 1-888-935-3877.
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 (25-1000 ohms and 25 watts minimum)
Lincoln part #S01404-114 works well for this purpose
Jumper leads
Wiring Diagram
TROUBLESHOOTING & REPAIR
All manuals and user guides at all-guides.com
WARNING
RANGER 305D
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