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  1. #1
    Join Date
    Dec 2009
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    New Zealand
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    FYI , Biflow driers and Reversing valves.



    I had an issue with a package A/C unit this week. In cooling pressures were normal , switch to heating and with in 10 seconds unit running in to vac . My thought was the expansion valve faulty but these were accurators and all moving and seals all ok. Next on the list was RV , what a mission to change (1 3/8 tubing)! the boss said i ll order one and you change it. I thought about it and asked about the bi flow filter could be blocked in one direction , No said boss.
    So thought , ill just change filter first so i cut out the bi flow first and replacing and vac down the system , charge it up and run it , sure enough it was the filter check valve faulty , i could blow through one end but not the other.
    Just something else to check out when diagnosing i quess.
    Cheers Andy



  2. #2
    Join Date
    Aug 2006
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    england
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    Re: FYI , Biflow driers and Reversing valves.

    Very interesting! What make and model were the driers and what where they fitted too? Just had same problem...

    http://www.youtube.com/watch?v=6pUZBi38rCM

    Cheers Jon
    Mostly found in Oxfordshire, UK :)

  3. #3
    Join Date
    Dec 2009
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    Re: FYI , Biflow driers and Reversing valves.

    Hey Monkey, they were an emerson filter drier , not sure of exact details, 5/8 solder . The unit was a Temperzone package, New Zealand made.

  4. #4
    Join Date
    Dec 2009
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    Re: FYI , Biflow driers and Reversing valves.

    Just seen your video and the drier i replaced it with was a Sporlan ! dooh

  5. #5
    Join Date
    Jul 2010
    Location
    NTH.QLD Australia
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    56
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    Re: FYI , Biflow driers and Reversing valves.

    Quote Originally Posted by monkey spanners View Post
    Very interesting! What make and model were the driers and what where they fitted too? Just had same problem...

    http://www.youtube.com/watch?v=6pUZBi38rCM

    Cheers Jon
    .. Forensic investigation at it's best. I see the core and felt pads had some discolouration. Maybe it was a good thing to have the bi-flow drier replaced at that time before further dramas developed.
    Last edited by mikeref; 07-03-2013 at 08:13 AM. Reason: Unable to give you points..... or cheese. Sorry.
    To the optimist, the glass is half full. To the pessimist, the glass is half empty.

  6. #6
    Join Date
    Aug 2006
    Location
    england
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    Re: FYI , Biflow driers and Reversing valves.

    Quote Originally Posted by AndyHX View Post
    Just seen your video and the drier i replaced it with was a Sporlan ! dooh
    Interesting... Same size too, will be in contact with Sporlan to see what they have got to say about it.
    Mostly found in Oxfordshire, UK :)

  7. #7
    Join Date
    Aug 2006
    Location
    england
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    44
    Posts
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    Rep Power
    38

    Re: FYI , Biflow driers and Reversing valves.

    Quote Originally Posted by mikeref View Post
    .. Forensic investigation at it's best. I see the core and felt pads had some discolouration. Maybe it was a good thing to have the bi-flow drier replaced at that time before further dramas developed.
    Was surprised at the discolouration, system had a failed reversing valve which was change at same time as the driers.
    Mostly found in Oxfordshire, UK :)

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