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  1. #1
    Join Date
    Feb 2010
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    Suction and liquid line



    Hi all

    I have come across a 2 door freezer with liquid line and suction line same size (both 3/8" but the compressor suction is 1/2") and it 's taking so long for the temperature to drop down. Any ideas?



  2. #2
    Join Date
    May 2007
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    Scotland
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    Re: Suction and liquid line

    Whereabouts exactly is the suction 3/8''? Also, what are the arrangements for the expansion device, what is your superheat / subcooling, and dT across evap and condenser?

  3. #3
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    Feb 2010
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    NT
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    Re: Suction and liquid line

    Hi mate,

    i have rectify this problem, suction line was too small...the dropper pipe from the evaporator to the condensing unit was too small, was 3/8". There was pressure drop. i have increase it to 1/2" and i'm getting a better flow of suction vapour.
    thanks to reply

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