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TROUBLESHOOTING & REPAIR
EXCITER VOLTAGE FEEDBACK 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 troubleshooting assistance before you proceed. Call
DESCRIPTION
This test will determine whether the exciter voltage module is reading each exciter phase voltage back to the control board accurately. An inaccurate reading can cause the control board to shut down the machine with an “ECH” or “ECL” error code when operating the machine at high currents.
MATERIALS NEEDED
None
This procedure takes approximately 20 minutes to perform.
