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INPUT POWER FACTOR CAPACITOR VOLTAGE CHECK
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 trou-
bleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353 (WELD).
PURPOSE FOR THE PROCEDURE
This procedure ensures that the power factor capacitors are discharged, for greater safety
when you are working on the Square Wave TIG 355 with INPUT POWER REMOVED.
MATERIALS NEEDED
Volt/Ohmmeter capable of testing 600 VAC
5/16" Nut driver
Resistor (500 ohms, 25 watts minimum)
TROUBLESHOOTING & REPAIR
AND DISCHARGE PROCEDURE
WARNING
SQUARE WAVE TIG 355
F-20
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