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Logic_Seal air

By Travis Parker,2014-06-01 01:47
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Logic_Seal air

Logic diagram

    Shaijao C 3x660MW FGD Project Seal air unit, diffuser - TAG No.: 10HTW10/11/12 & 20HTW10/11/12 & 30HTW10/11/12

     Seal air unit, inlet box - TAG No.: 10HTW20/21/22 & 20HTW20/21/22 & 30HTW20/21/22 Variax ANN-5150/2500B PI-diagram - Howden Drawing No.: 0-123332-9 Howden Order No.: S7473 Functional descript. Trip-schedule Howden Draw. No.:

    P< 250 Pa

    AN001Interlock startSealing air pressureCP001(inlet box)&

    ODTTimerAN001Trip&

    240 min.

    &Alarm

    10FHTW21-AN002 orChange over to&10FHTW22-stand-by fanAN002

    P> Pa determined at test-run

    Sealing air filter&CP501AT001Change filter(inlet box)

    P> Pa determined at test-run

    Sealing air filter&CP501AT002Change filter(inlet box)

17.08.2004 Order no.: S7473 Rev.: - Drawn: FHP Check: LFA 57321307.doc Page 1/2

Logic diagram

    Shaijao C 3x660MW FGD Project Seal air unit, diffuser - TAG No.: 10HTW10/11/12 & 20HTW10/11/12 & 30HTW10/11/12

     Seal air unit, inlet box - TAG No.: 10HTW20/21/22 & 20HTW20/21/22 & 30HTW20/21/22 Variax ANN-5150/2500B PI-diagram - Howden Drawing No.: 0-123332-9 Howden Order No.: S7473 Functional descript. Trip-schedule Howden Draw. No.:

    P< 250 PaSealing air pressureCP001AN001Interlock start&(difuser)

    ODTTimer&AN001Trip

    240 min.

    &Alarm

    10FHTW11-Change over toAN002 or&stand-by fan10FHTW12-AN002

    P> Pa determined at test-run

    Sealing air filter&AT001Change filterCP501(difuser)

    P> Pa determined at test-run

    Sealing air filter&AT002Change filterCP501(difuser)

    Sealing air fanCut in heating10FHTW11 or&AH001in operationelement10FHTW12Fan runs

    Sealing air fan out of10FHTW11 orCut out heating&AH001operation10FHTW12elementFan runs

    17.08.2004 Order no.: S7473 Rev.: - Drawn: FHP Check: LFA 57321307.doc Page 2/2

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