Further test the scrs, go to the active scr test, Troubleshooting & repair, Warning active scr test – Lincoln Electric IDEALARC R3R-500 User Manual
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TROUBLESHOOTING & REPAIR
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IDEALARC R3R
WARNING
ACTIVE SCR 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
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 216-383-2531 or 1-800-833-9353 (WELD).
DESCRIPTION
This test will help determine if the device can be gated ON and conduct current from anode
to cathode.
MATERIALS NEEDED
An SCR tester as specified in this procedure.
5/16” Nut driver
Idealarc R3R Wiring Diagrams (See the Electrical Diagrams section of this manual.)
This procedure takes approximately 30 minutes to perform.