Results 1 to 8 of 8
  1. #1
    Join Date
    Feb 2005
    Posts
    11
    Have an older soda machine (standard size like outside Wally World), compressor needed R-12 freon. Boss had me add drop in replacement freon, which never cooled well. Recovered, pulled vacumn and added 3 12 oz. cans of R=12. What should my pressures and suction line temps be? Thanks

  2. #2
    Join Date
    May 2005
    Posts
    1,397
    man there should have been a tag with that info on it.

    low side should be around 20/35 psi..

    i think you may have over done it..

  3. #3
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    6,038
    20/35????????????? To funny. You suppose box temp/outdoor ambient has anything to do with it??? Think superheat/sub cooling plays any part of the operation???? In ove 40 years I have never ever seen a tag with operating pressures on a machine. Test pressures but not operating pressures. Education is a beautiful thing.

    [Edited by rayr on 06-25-2005 at 04:26 AM]
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

  4. #4
    Join Date
    Mar 2005
    Location
    Louisiana
    Posts
    211
    "man there should have been a tag with that info on it."
    If it was only that easy..
    First time I hear of such a thing myself.


    HiltonTech

  5. #5
    Join Date
    Dec 2004
    Posts
    56
    all kidding asisde i work on some self contained units that do post ci n co on thier tags it is out there not common but is around

  6. #6
    Join Date
    May 2005
    Posts
    1,397

    Hmm

    OK, i'll try to make this a bit more clearer..there should have been a tag with the refrigerant type and amount..

    like in: r-12..12 oz.

    is that more better??

  7. #7
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    6,038
    lol. More better and gooder.
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

  8. #8
    Join Date
    Jan 2005
    Posts
    56
    Naturally starting with a proper charge the pressures on the high and suction side will be higher than one would expect. This is due in part to the ambient temp, and trying to cool down warm metal in the evap. you mentioned a drop in? I have used R409A with great results.

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