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F-22

TROUBLESHOOTING & REPAIR

F-22

 

 

ACTIVE SCR RECTIFIER ASSEMBLY TEST

WARNING

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 Active SCR Test will determine if the device is able to be gated ON and conduct current from anode to cathode.

MATERIALS NEEDED

An SCR Tester as specified in this procedure.

IDEALARC SP-250 wiring diagrams (See Electrical Diagrams Section of this Manual). SCR Heat Sink Assembly Drawings

IDEALARC SP-250

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Lincoln Electric SP-250 service manual Active SCR Rectifier Assembly Test, Test Description