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  1. 26-01-2007, 01:09 PM #1
    gspssk's Avatar
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    R12 to R22 changing



    Hi im new member to here.

    i want convert my exiting chilling system run by R12 to R22 gas . is it possible to run same compressor by R22 ? what are important things ( modification ) to change to get same chilling capacity ?

    any one can explain detaily ?
    thax
    ssk


  2. 26-01-2007, 02:21 PM #2
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    LRAC
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    Re: R12 to R22 changing

    Hi gspssk

    You will need to inform us as to what compressor you have.

    When converting to R22 ( don't know why you could use R413a) may involve re-sizing pipework and definately you will need a bigger condenser.

    Please advise the forum on more information please and why you want to use R22.

    Regards
    Lrac

    Sorry changed my avator again seamed more apt for a lonely life as a fridge guy with no office back up!
    Last edited by LRAC; 26-01-2007 at 02:52 PM. Reason: avator
  3. 26-01-2007, 04:08 PM #3
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    Re: R12 to R22 changing

    bad move for lots of reasons that will take an age to type, spend your time reseaching the best drop in available for the application,your refrigerant supplier will help you,
  4. 26-01-2007, 09:11 PM #4
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    Re: R12 to R22 changing

    hi gspssk
    old gas bottle is right.get a drop in.is it worth it. remember their phazing 22 out
  5. 27-01-2007, 07:27 AM #5
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    Re: R12 to R22 changing

    Compressor can't handle the additional load associated with R22 and asLrac said, much bigger condensor.
    And, your evaporator isn't designed for this.
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
  6. 28-01-2007, 07:45 AM #6
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    Re: R12 to R22 changing

    Is this for the same plant where you want the duct calculation?
    It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
  7. 02-02-2007, 04:34 PM #7
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    Re: R12 to R22 changing

    R 134A is usually recommended for a drop in for R12.You will need to watch out for seal compatability and oil compatability as they tend to break down with R134A.I agree don't consider R22 as this out.You could consider R407c but you may as well design a new sytem.Best bet is a drop in.
  8. 02-02-2007, 10:18 PM #8
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    Re: R12 to R22 changing

    Hi, Wkd

    Welcome to RE

    Quote Originally Posted by wkd View Post
    R 134A is usually recommended for a drop in for R12.You will need to watch out for seal compatability and oil compatability as they tend to break down with R134A.I agree don't consider R22 as this out.You could consider R407c but you may as well design a new sytem.Best bet is a drop in.
    You have been very busy today, with a lot of good posts, 12 actually until now , thanks.

    Please can you tell us something more about yourself in New to RE.

    What kind of tests are you performing?

    Best regards, Josip

    It's impossible to make anything foolproof because fools are so ingenious...
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  9. 02-02-2007, 11:34 PM #9
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    Re: R12 to R22 changing

    Quote Originally Posted by wkd View Post
    R 134A is usually recommended for a drop in for R12..

    Uh! this is NOT a drop in
  10. 03-02-2007, 04:50 AM #10
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    Re: R12 to R22 changing

    Well it is a drop in after an oil change and some slight adjustments
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