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TROUBLESHOOTING & REPAIR
F-15 F-15
RANGER 250
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WARNING
POWER 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
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 1-800-833-9353 (WELD).
TEST DESCRIPTION
This procedure will insure that the large capacitors in the power module have been dis-
charged. This procedure should be performed whenever work is to be attempted on or
near the power module.
MATERIALS NEEDED
3/8" Wrench or socket wrench
9/16" Wrench
Volt/Ohmmeter
Resistor (25-1000 ohms and 25 watts minimum)
Jumper leads
This procedure should take approximately 20 minutes to perform.