Return to Section TOC Return to Master TOC
Return to Section TOC Return to Master TOC
Return to Section TOC Return to Master TOC
F-33 TROUBLESHOOTING & REPAIRF-33
STATIC SCR TEST
WARNING
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
DESCRIPTION
The 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
3/8” Nut Driver
Analog Ohmmeter (Multimeter)
Tig 275 Wiring Diagrams
SCR Heatsink Assembly Drawing
Return to Section TOC Return to Master TOC
