Lincoln Electric SVM123-A service manual Static SCR Test

Models: SVM123-A

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F-30

TROUBLESHOOTING & REPAIR

F-30

 

 

STATIC SCR TEST

WARNING

Service and repair should be performed only by Lincoln Electric factory trained personnel. 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 precautions 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 trou- bleshooting assistance before you proceed.

Call (216) 383-2531 or (800) 833-9353 (WELD).

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TEST DESCRIPTION

The Static SCR Test is a quick check to determine if an SCR is shorted or “leaky”. See machine waveform section for normal and abnormal SCR waveforms.

MATERIALS NEEDED

Analog ohmeter Volt/Ohm Meter (Multimeter)

DC-1000 Wiring Diagrams (See Electrical Diagram Section of Manual).

IDEALARC DC-1000

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Lincoln Electric SVM123-A service manual Static SCR Test