Torque Converter pressure GE Frame 6b

B

Thread Starter

bobbygemok

We have a problem with our gas turbine frame 6 GE cannot start because of alarm 'Starting Device Trip'. But our diesel starter rpm is about 2200 and enough to start turbine. We've checked all the relieve valve and replace with new one but also the same. However, we noticed that the torque converter pressure became "0 bar" after certain time. What is the solution for this type of problem?

Thank you
 
Dear bobbygemok,

We have faced the same problem in our Frame 6B. Our machine starting device is Electric motor and the machine tripped during the purging time showing 'Starting Device Trip'. Initially we thought that the torque converter air bleed solenoid valve 20TU was problematic. But later we found that there was one regulating orifice in between solenoid valve and torque converter which permitted more air into the torque converter hence reducing the performance of the torque converter. We readjusted (partially close) the regulating orifice and the problem solved.

N.B.: You have to be very careful in readjusting the regulating orifice as a very little adjustment will bring comparatively large speed variation.
 
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