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  1. #1
    Chris Siers's Avatar
    Chris Siers Guest

    Domestic fridge/freezer pressures



    Hi All.
    My normal job is in installation of splits/add-ons using R22 and R410.
    My fridge and freezers at home are giving me trouble.
    1. Freezer. R143. Cabinet temperature slowing decreasing - currently 5.4 C. Fitted piercing valve on suction line. Pressure about 3 psi. What should the running pressure be?

    2. Fridge/freezer in garage. R12. Lowest cabinet temperatures are 4.9 and - 9 C. Want to add some SP34E. What pressure should I be expecting on suction?

    3. Chest freezer. R12. Lowest temperature - 13 C. Again to top up with SP34E. What is an ideal suction pressure.

    Many thanks

    Chris Siers



  2. #2
    Join Date
    Oct 2008
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    mallorca, spain,
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    Re: Domestic fridge/freezer pressures

    chris , how long have you been working on a/c- fridge ? do you normally guess the temp or have you got any comparitors to see what the psi is temp= happy guessing

  3. #3
    Join Date
    Feb 2008
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    adelaide sth.oz
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    Re: Domestic fridge/freezer pressures

    dont know about manufacturers now,low temp stuff was 0 psi or less,westinghouse fridges where similar.
    probably not handling the heat chris
    mmm to beer or not to beer...........lets drink breakfast

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