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  1. #1
    Join Date
    Nov 2005
    Location
    wales
    Posts
    66
    Rep Power
    15

    Back-up / over-ride settings



    I have a CO2 rack with a primary and back up control system. The back up contoller acts as a watchdog and takes over from the primary controller if the rack suction pressures increase above set-point for a time period.
    As a rule of thumb at what pressure would you expect to see a pack (HT or LT) go into back-up and how long would you expect the time delay to be?



  2. #2
    Join Date
    Jun 2011
    Location
    Australia
    Age
    39
    Posts
    336
    Rep Power
    16

    Re: Back-up / over-ride settings

    Howdy,

    Cut in 3800kPa Cut out 3600kPa (bottom of page 32);
    https://www.bitzer.de/shared_media/d...o-104-1-au.pdf

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