Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B - Manual (Page 117)

OUTPUT RECTIFIER DIODES TEST
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 1-800-833-9353 (WELD).
TEST DESCRIPTION
The following procedure will determine whether one of the output rectifier diodes is
shorted. If one of the diodes is shorted, the output rectifier assembly must be replaced.
MATERIALS NEEDED
Analog Volt/Ohmmeter (Multimeter)
5/16" Nut driver
3/8" Nut driver
Machine Wiring Diagram in the Electrical Diagrams section of this manual
WARNING
TROUBLESHOOTING & REPAIR
F-57 F-57
POWER WAVE 450
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This procedure takes approximately 15 minutes to perform.