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  1. #1
    krjalone's Avatar
    krjalone Guest

    direct replace r12



    Hello. I have an old vending machine /water chiller.
    It is working fine but cooling capacity is a bit low.
    I wonder is it possible to refill the compressor whit new
    refrigerant ? Compressor is danfoss sc10b and is using
    R12 refrigerant. Is there a direct replacement for this ?
    My friend has a llicence to change gas but I am not sure
    which gas to use. I dont want to scrap the whole thing.

    Thanks if you can help me.



  2. #2
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    Re: direct replace r12

    It Depends whats available where you are.

    normally i would use R409a here in the UK but there other options.

    Regards

    fatboy

  3. #3
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    Re: direct replace r12

    Quote Originally Posted by krjalone View Post
    Hello.
    R12 refrigerant. Is there a direct replacement for this ?

    Thanks if you can help me.

    R401a, R409a are good straight drop in refrigerants.

    Cheers taz.

  4. #4
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    Cool Re: direct replace r12

    I personally think that R409a is the best Drop in - If your friend has a license to change gas then I am surprised that he didn't know this? If your friend is a gas engineer then he would handle gas in boilers, Gas Ovens etc, and wouldn't have the type of gas used in Refrigeration. Although it may be different in Finland.


  5. #5
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    Re: direct replace r12

    Used FX 56 (409A) in both hermetic (Unite Hermetique compressor) with an air-cooled condenser, and open systems (York a\c compressor) with a water cooled condenser, both with mineral oils.

    My girlfriend in Sweden had her restaurant food freezer system, using a Bitzer open compressor and a water-cooled condenser, changed from R12 to R404A but there has been a very small but persistent oil leak from the shaft seal since then.

    Steve

  6. #6
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    Re: direct replace r12

    Canada has a wonderfull gas called R-414b, good stuff if you can get it. I don't think that its available in the USA, but maybe in Europe?? Beauty Blend.

  7. #7
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    Re: direct replace r12

    Quote Originally Posted by taz24 View Post
    R401a, R409a are good straight drop in refrigerants.

    Cheers taz.

    Generally the R-12 systems I have seen converted to R-401a have been fairly low temperature things.

    DuPont's web site
    http://refrigerants.dupont.com/Suva/.../suvamp66.html
    suggests temperatures for that conversion well below freezing.

  8. #8
    VS-41's Avatar
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    Re: direct replace r12

    R-414b is known as 'HOT SHOT' here in the US. But I find that R-414a works better than R414b. In fact if you do warranty work for Whirlpool's non 134a systems you are required to use R-414a. this is on Whirlpool household Refig. & Freezers. I also use it in Auto A/C instead of retrofitting to 134a. Plus you only use 80% as compared to R-12.

  9. #9
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    Re: direct replace r12

    Quote Originally Posted by VS-41 View Post
    R-414b is known as 'HOT SHOT' here in the US. But I find that R-414a works better than R414b. In fact if you do warranty work for Whirlpool's non 134a systems you are required to use R-414a. this is on Whirlpool household Refig. & Freezers. I also use it in Auto A/C instead of retrofitting to 134a. Plus you only use 80% as compared to R-12.


    That’s odd!! 414a was mostly used in automobile A/C, where you buy that stuff?
    414b is available everywhere in the US, I been using the stuff for years as drop in r-12 replacement and it works great.

  10. #10
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    Re: direct replace r12

    We use mainly sp34e here, which is 97% r134a and 3% propane. The propane means a decent mix and return of the mineral oil. This means it's fairly cheap and easy to get.

  11. #11
    VS-41's Avatar
    VS-41 Guest

    Re: direct replace r12

    R-414a is sold as Whirlpool's brand name with the 'FSP' . I can get it in 12oz. cans or 25lbs. jugs. I get it at 1st Source parts Servell.

  12. #12
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    Re: direct replace r12

    U can use R409 gas , without charging compressor oil or Exp Valve but about the pressure .........!!!!!!

  13. #13
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    Re: direct replace r12

    what about r49 or r413a

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