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Dear All,
GE 5001 Mark VI Unit Tripped by Alarm "IGV not following Trip." We checked the LVDTs feedback and excitation and everything was ok. We check IGV servo valve resistance and it was ok. we tried to calibrate IGV actuation piston the maximum angle we could get was 56 we couldn't exceed it.
We're highly suspecting that the actuation piston is worn and oil is passing through the piston rings. What are the practice that could help us emphasizes the piston issue?
your help is appreciated.
GE 5001 Mark VI Unit Tripped by Alarm "IGV not following Trip." We checked the LVDTs feedback and excitation and everything was ok. We check IGV servo valve resistance and it was ok. we tried to calibrate IGV actuation piston the maximum angle we could get was 56 we couldn't exceed it.
We're highly suspecting that the actuation piston is worn and oil is passing through the piston rings. What are the practice that could help us emphasizes the piston issue?
your help is appreciated.