Static Scr Rectifier Assembly Test - Lincoln Electric IDEALARC SP-250 Service Manual

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STATIC SCR RECTIFIER ASSEMBLY TEST

Service and repair should be performed only by Lincoln Electric factory trained per-
sonnel. Unauthorized repairs performed on this equipment could result in danger to
the technician or the machine operator and will invalidate your factory warranty. For
your safety and to avoid electrical shock, please observe all safety notes and pre-
cautions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform
the tests/repairs safely, contact the Lincoln Electric service department for technical
troubleshooting assistance before you proceed.
Call (216) 383-2531 or (800) 833-9353 (WELD).
TEST DESCRIPTION
The Static SCR Test is used to quickly determine if an SCR is shorted or "leaky." See the
Waveform Section in this manual for normal and abnormal SCR waveforms.
MATERIALS NEEDED
Analog Ohmmeter (Multimeter)
IDEALARC SP-250 wiring diagrams (See Electrical Diagrams Section of this Manual).
5/16" Nut Driver
fi" open end or socket wrench
TROUBLESHOOTING & REPAIR
IDEALARC SP-250
WARNING
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