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  1. #14
    Join Date
    Feb 2007
    Location
    Napa
    Posts
    111
    R-22 refrigerant...and the foam is not just a little foam on top, the complete sight glass is foamed...

  2. #15
    Join Date
    Nov 2009
    Location
    Richmond, working under tarps
    Posts
    483
    set SH to copeland's 8-10deg suggestion and se what happens.

    If you don't have a oil pressure or level problem I don't see the problem.

  3. #16
    converting from mineral to POE there should be no more than 5% mineral oil left in system
    and they are not compateable.
    These were basic rules during the refrigerant retrofits in the 90's for refrigeration

  4. #17
    Join Date
    May 2010
    Posts
    1,291
    Mixing of the oils is your first problem.

    Also, verify your crankcase heater is working and you are not slugging the compressor

  5. #18
    Join Date
    Nov 2009
    Location
    Richmond, working under tarps
    Posts
    483
    He is still using an HCFC, and was told by the manufact, that POE is backwards compatible.

    I believe the less than 5% other than POE applies if a HFC is being used.

  6. #19
    Join Date
    Jun 2007
    Location
    Vancouver BC
    Posts
    5
    Just wanted to agree with indy2000 regarding POE and HCFC's, this is what Copeland says about the subject:

    http://www.emersonclimate.com/en-US/...essor.aspx#Q15

  7. #20
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    How much oil was in the old compressor? If it was low, and did not leak out. it would be someware in the system , which would cause too much oil and make foam.

  8. #21
    Join Date
    Mar 2010
    Location
    central us
    Posts
    32
    mineralix oil and poe oil do not mix

  9. #22
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,386
    Quote Originally Posted by james32 View Post
    mineralix oil and poe oil do not mix
    Beg to differ.

    I've seen POE and mineral mixed and working just fine.

  10. #23
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    So whats the verdict here man....... Elvis..........We need an Elvis sighting here...

  11. #24
    Join Date
    Oct 2011
    Location
    hayward ca
    Posts
    58
    So whats the verdict here man..??..... We need an Elvis sighting here...I'm very curious what the outcome here will be. I'm taking notes here.

  12. #25
    Join Date
    Nov 2011
    Location
    British Columbia
    Posts
    48
    Old thread, but couldn't help it, made me curious. With elvis66 MIA, I think indy2000 has called it on this one. No need to worry if level present and not tripping.

    One thought tho... POE has more detergent qualities and is more miscible than mineral oil. It will disolve in and out of refrigerant faster than MO especially in HCFCs. That being the case, "foaming" at the crankcase is not unrealistic.

  13. #26
    Join Date
    Feb 2007
    Location
    Napa
    Posts
    111
    The outcome was that oil pressures was pretty stable at about 40 psi, and since there doesn't seem to be a definative answer, I am just going to accept it's foamy oil personality and call it good.

    Thanks for all the input, you all really got me going in the right direction.

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