In one of our units, GE Gas Turbine frame 9E, Controlled by Mark IV+, the SRV start hunting and P2 pressure is flactuating as well from firing till FSNL. After synchronization directly, SRV is not hunting and performing very normal. there are no other alarms or diagnostics.
We have replaced the moog servo-valve, stroked the valve from 0 to 100% and every thing is normal. Mechanical team replaced the hydraulic cylinder also but still the issue is not yet solved.
could you please advise in this regard.
We have replaced the moog servo-valve, stroked the valve from 0 to 100% and every thing is normal. Mechanical team replaced the hydraulic cylinder also but still the issue is not yet solved.
could you please advise in this regard.