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  1. #1
    Join Date
    Aug 2017
    Location
    UK
    Age
    23
    Posts
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    Red face R404a to R407a Retrofit



    Hi All,

    Due to the ever increasing price and the fact 404a is being phased out I've been tasked with coming up with a plan to change it to 407a. The system in question contains around 600kg and is a multipack system, which operates at around 8 degrees Celsius currently and will do for the foreseeable future.

    In regards to the things being considered I've listed below things that may need changing in order to accommodate this change:
    - TEV's
    - Pressure Switches
    - PRV's
    - Drier Filters
    - Schraeder Valves
    - Compressor oil change

    If I've missed anything please feel free to tell me, any advice would be much appreciated.

    Jurgen



  2. #2
    Join Date
    Sep 2010
    Location
    Dorset
    Age
    69
    Posts
    210
    Rep Power
    10

    Re: R404a to R407a Retrofit

    Is R407a the best choice ?

    Some alternatives maybe... http://bit.ly/2eswIeT
    Brian, retired in Devon.

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