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  1. #1
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    Low Pressure Recovery

    I am just looking for options on an issue I run into occasionally.

    Low pressure Chillers with leaks , prior to repair will no doubt be full of non condensables. When you recover the charge for repairs, liquid recovery via push pull is easy. But then there’s the vapor with non condensables.

    Now if it is were r11 , it was easy in the past. But r123 has presented safety issues. Usually we bring in a water cooled purge to assist and recover into tanks. However the water cooled purge isn’t always available.

    I’ve tried recovering with just using recovery machine which has a water cooled condenser. However the low pressure recovery tanks relief valve is set at 15 psi. The tanks over pressurize quick. But when there is 1 or 2 hundred pounds of vapor left , what are the options? Do you charge additional to dispose of and add fresh ? Charge extra to distill/ clean ? And what is the most cost effective method in this situation.

    I’m just putting this out there for professional opinion. Locally I hear almost something different from each tech I talk to. Thanks for look8ng.
    cant make this crap up

  2. #2
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    This will be good, I know what most people do.
    If you dont stand behind our troops, please feel free...........to stand in front of them.

  3. #3
    Join Date
    Jun 2010
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    U.A. (upper Alabama)
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    Quote Originally Posted by chillrdude View Post
    This will be good, I know what most people do.
    I don’t do that!


    Sent from my iPhone using Tapatalk

  4. #4
    Join Date
    Mar 2004
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    R123 safety issues ?
    Such as ?
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

  5. #5
    Join Date
    Aug 2006
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    Mixing oil and fire with a big spoon.
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    Get an air cooled portable purge...they are nicer and easier to use. You can also use a large empty tank for the vapor recovery, install a 10 psig pressure relief and let the tank and relief valve act as a purge. Not as effective as a mechanical purge but it works, especially if you have lots of air or leaks and may not get it all out. You have to expect that you won’t get it all out with a machine that has large leaks, anyway.
    "Right" is not the same as "Wise".

    Don't step on my favorite part of the Constitution just to point out your favorite part.

  6. #6
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    Quote Originally Posted by cperk View Post
    I don’t do that!


    Sent from my iPhone using Tapatalk
    me neither, I cant even spell deminnus
    If you dont stand behind our troops, please feel free...........to stand in front of them.

  7. #7
    Join Date
    Aug 2002
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    Southold, NY
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  8. #8
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    Jan 2004
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    You have to use a purge on your tanks, it's the only way to do it. I would never hook a hose up to the tank with the valve slightly cracked and vented through the rupture disc line.
    Federal Reserve, stealing your kids futures since 1913

    UA290

  9. #9
    Join Date
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    Quote Originally Posted by acjourneyman View Post
    You have to use a purge on your tanks, it's the only way to do it. I would never hook a hose up to the tank with the valve slightly cracked and vented through the rupture disc line.
    I would also never set the relief valve on the tank to 4lbs.
    If you dont stand behind our troops, please feel free...........to stand in front of them.

  10. #10
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    Feb 2004
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    Thread Starter
    Just as I suspected.... Feel better knowing we’re all on the same page , well at least same chapter...

    I always wondered why the relief valve outlets had hose fittings , lol.

    Thanks for feedback
    cant make this crap up

  11. #11
    Join Date
    Mar 2004
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    Quote Originally Posted by jerseydevil View Post
    Just as I suspected.... Feel better knowing we’re all on the same page , well at least same chapter...

    I always wondered why the relief valve outlets had hose fittings , lol.

    Thanks for feedback
    I would still like to know what the R123 safety issues are
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

  12. #12
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
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    Quote Originally Posted by Healey Nut View Post
    I would still like to know what the R123 safety issues are
    Causes Cancer in California!

  13. #13
    Join Date
    Mar 2004
    Location
    ottawa canada
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    Quote Originally Posted by pecmsg View Post
    Causes Cancer in California!
    Guess Im ok then seeing as Im in the great white north .
    PS its -22C here today
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

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