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  1. grajesh

    Hydraulic ratchet trouble

    Dears. Our site one of the GE Frame-6B unit is having ratchet trouble. Earlier when unit was on cool down we used to get "ratchet trouble" but shaft is rotating. In the past two days with the same alarm shat is not rotating. Hydraulic ratchet pressure is 50 bar and 20CS is getting...
  2. grajesh

    Diagnostic alarm <L63FD2H>

    Dear CSA, It is Mark V TMR > Why would you think that checking the calibration of the switch would have an > effect on the value seen be a single processor (I'm presuming the panel is TMR)? Because problem started after the maintenance outage. > Have you tried replacing the TCDA...
  3. grajesh

    Fire protection

    Ok understood, since there is no insurance requirement we may not go for fire protection system in the load and exciter compartment. About the damper feedback you and Mr.Pascal already had explained (i didn't check your replies due to maintenance activity, sorry). the link is below...
  4. grajesh

    IGV calibration

    Dear CSA, 0% = 0.825 Vrms, IGV angle in HMI screen is 35.1 DGA (Hydraulic pump is not running) 0% = 0.775 Vrms, IGV angle in HMI screen is 34.1 DGA (Hydraulic pump is running). 100 % = 3.085 (84 DGA) Our problem here is when unit on cooldown it won't give start permissive as IGV is...
  5. grajesh

    IGV calibration

    During auto calibration the results are 0% = -1.012V, 100% = 4.278 V but in specification 0%= -0.763, 100% = 3.92. Why auto calibration result is differ from specification?? Before the auto calibration we have serviced our IGV cylinder and manually calibrated, found IGV normal. G.Rajesh
  6. grajesh

    Diagnostic alarm <L63FD2H>

    Can anybody suggest opinion for the diagnostic alarm <R> L63FD2H voter mismatch? Cheers G.Rajesh
  7. grajesh

    Fire protection

    Dears, We have 3 Frame-6B and 2 Frame-9E GE machines. In Fr-6B all compartments were equipped with fire protection system like fire detector and Co2 lines. In Fr-9E after turbine compartment there is no fire protection system. What is the reason GE didn't provide fire detector and Co2...
  8. grajesh

    4-20ma and loop powered

    Very useful information thank you G.Rajesh
  9. grajesh

    IGV calibration

    Dear CSA, Thank you again for your reply. We not done any adjustment as unit was started due to summer load. We are closely watching the parameters like exhaust temperature and CPD. Thank you G.Rajesh
  10. grajesh

    IGV calibration

    Dears, In SRV & GCV calibration 0% and 100% LVDT feedback can be found during manual stroke or Auto calibrate and entered into I/O configurator. In IGV is concern, 100% is limited to 84 deg, so how to calculate 100% stroke value to enter into I/O configurator. Somewhere I read y...
  11. grajesh

    Mark V shutdown

    Dears, Is there any procedure to shutdown the Mark V panel? if processor is power off in the following order, which is more safer? 1. <P>, <R>,<S>,<T> AND <C> 2. <R>,<S>,<T> <P> AND <C> 3. <C>, <R>,<S>,<T> AND <P> Thanks G.Rajesh
  12. grajesh

    Pressure Transmitters

    As CSA pointed out, check is there any force logic? as during transmitter calibration vent valve (20VG) will be forced. all the very best G.Rajesh
  13. grajesh

    IGV control

    Dear All, One doubt has raised when I was reading about Siemens gas turbine. Our site is consisting GE frame-6B and 9E machines. Here IGV is being controlled by hydraulic cylinder equipped with servo valve (moog). How IGV is being controlled by electric motor in Siemens...
  14. grajesh

    Diagnostic alarm <L63FD2H>

    Dear All, We have been running, 3 Frame-6B and 2 frame-9E machines. In one of the FR-9E is having diagnostic alarm "<R> L63FD2H votter mismatch". What will be the cause? We have calibrated the particular pressure switch and restarted the <R> and <C> processor. But the the...
  15. grajesh

    Damper closing feedback

    Dear All, Hi, We are running GE designed simple cycle gas turbine, Frame-6B & 9E. In simple cycle gas fired turbine, if fire takes place all dampers should close. Present system not having any feedback from the dampers whether it closed or not if fire happened. Will it be useful if...
  16. grajesh

    Mark V time from HMI

    Dear all, How are you? We are running gas turbine with Mark-V HMI. We would like to change the Mark V pre-processer time. We are able to change the HMI time as like PC, How to sent this HMI time to controller? Thanks G.Rajesh
  17. grajesh

    Calibration difference

    Thanks for all for detailed reply. G.Rajesh
  18. grajesh

    GE Energy & GE Oil & Gas

    What is GE Energy and GE Oil & Gas? Are both same company or not? Thanks G.Rajesh
  19. grajesh

    View 2 tool

    Dear All, We running 3 frame-6B and 2 frame -9E machines with Mark V TMR. Recently we finished the <I> to <HMI> upgrade, I would like to know, how to collect the past data for the analysis purpose if unit tripped? Can I use view2 for this purpose? Will View2 collect the past data to...
  20. grajesh

    After GCV & SRV maintenance

    Dear CSA / Sd, Please clarify this one, If SRV I/O conf. download to processor, Is it necessary to change the regulator type from 77 to 43 (since SRV is a pressure feedback control)? I think during auto calibrate regulator type won't be a problem. Thanks G.Rajesh
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