Results 1 to 7 of 7

Thread: POE and MP39

  1. #1
    Join Date
    Jul 2008
    Posts
    414

    POE and MP39

    Just read on Duponts site that only AB or MO is recommended with MP39. Thought i was ok to run with POE. Wouldn't 134a be a better choice with POE on a smaller system anyway?
    "It's just like it doesn't work. I mean it seems to be ok now, but it usually like never works"

    "Never an always and always a maybe"

  2. #2
    Join Date
    Sep 2010
    Location
    Western, MO
    Posts
    871
    Got a link to that? Has something changed since the retrofit guide?


    Either alkylbenzene (AB) lubricants or polyol ester
    (POE) lubricants can be used with Suva®
    service refrigerants. In some cases, mineral oil may be
    acceptable (see below). These lubricants are available from DuPont Distributors
    jim
    Common sense isn't very common anymore.

  3. #3
    Join Date
    Jul 2008
    Posts
    414
    http://www2.dupont.com/Refrigerants/.../SuvaMP39.html

    hope that works-note the part "recommended lubricants"
    "It's just like it doesn't work. I mean it seems to be ok now, but it usually like never works"

    "Never an always and always a maybe"

  4. #4
    Join Date
    Sep 2010
    Location
    Western, MO
    Posts
    871
    That's strange. I thought MO was only good with small cap tube systems that had good oil return.

    I'll just keep using it in the small systems without an oil change. And maybe ask the compressor manufacture on the bigger stuff.

    jim
    Common sense isn't very common anymore.

  5. #5
    Join Date
    Jul 2011
    Location
    Nanaimo,BC, Canada!
    Posts
    345
    I have seen mp-39 in med temp systems quite frequently, and have used mp-39 as a retrofit on old r-12 reach ins, with out having to change the oil, with Great success. I've also used it in supermarket refrigeration, however have changed the oil to ab200.

    Poe oil is backwards compatible, therefore there is no reason why you couldn't use it with mp-39 if you had to or wanted to, other than it quite a bit more pricey than ab.

  6. #6
    Join Date
    Apr 2011
    Location
    indiana
    Posts
    13
    Must be a typo they mean poe. Using mo is a gamble. And remember you should cut some cap tube off on retrofit jobs to 39, or 134

  7. #7
    Join Date
    Dec 2011
    Location
    USA
    Posts
    66
    I have left the MO in MP39 larger supermarket systems and have been running for over 8 years without any problems.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event