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Thread: System charging

  1. #1
    Dylan's Avatar
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    System charging



    Has anyone had problems with charging a system with liquid in the low side of a domestic refrigerator using 134A? I have always been taught and have also read that there is a risk of compressor damage by doing this.



  2. #2
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    Re: System charging

    Quote Originally Posted by Dylan
    .....that there is a risk of compressor damage by doing this.
    That's right, there may be the possibility of liquid entering the cylinders and wrecking the compressor.

    It could be argued that the maximum system charge for the fridge/compressor should ensure safe operation but with a cold compressor on start up and charging a risk is there.
    Brian - Newton Abbot, Devon, UK
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    Exclamation Re: System charging

    Quote Originally Posted by Dylan
    there is a risk of compressor damage by doing this.
    Yes there is a risk if u dump whole charge in one go. but if you are charging with small quantities then you will not face any problem.As heat generated by Compressor will vaporise the liquid refrigrent.

    Good Practice is to charge with vapours only but in case of blends where refrigerant has to be charged in liquid state only then do the what I have mentioned earlier.

    Tejbir singh

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    Re: System charging

    Hi Dylan

    I use a cap-kit ie a copper spun drier with a length of capillary c/w 1/4 brass connection.

    Best regards Mark
    Last edited by Mark; 16-12-2004 at 07:22 PM.

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    Re: System charging

    i use one of those flow reducer things from "yellow jacket" seems to work ok.
    i timed it a couple of days ago, it took 15mins for 600g of 134a.

    cheers

    eggs

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    Re: System charging

    There is a small device called KWIK CHARGE that you connect to the suction line and charge with liquid refrigerant.

    Never used it, only saw it. I believe it made by Imperial of USA.

    Chemi

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    Re: System charging

    As good practice I always take my time when filling with liquid.

    On the comps I have opened the intake is at the top inside the body and probebly not much chance of completly filling the body with liquid.

    I thought it was that when even a smallish amount of liquid is put in, in boils off and lifts the oil into the pump which can destroy it and not the actual refrigerant liquid.

    Exspeicially when youve already evacuated the system and the oil is ready to absorb most of the charge before it warms up.

    ps any chance of getting a spell checker on this page. cos mine is atrotious
    IF AT FIRST YOU DON`T SUCCEED.
    DESTROY ALL EVIDENCE THAT YOU TRIED!
    and go get a cuppa

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    Re: System charging

    just write it full of spelling mistakes and bad grammer, i've only been sort of told off for it once.

    cheers

    eggs

  9. #9
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    Re: System charging

    where's 'quinte'??

    cheers

    richard

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    Wink Re: System charging

    Use a drier that has a schreader valve fitted ,then charge directly into the liquid line.(NRS)

  11. #11
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    Re: System charging

    Quote Originally Posted by rbartlett
    where's 'quinte'??
    You'll have to learn to Google more, Richard.

    According to the WWW it is in Canada, which I suppose means that it is really somewhere completely different
    Brian - Newton Abbot, Devon, UK
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