Click for Burger Click for Westport Click for Cheoy Lee Click for Lurssen Click for Nordhavn

Post 46 cockpit freezer

Discussion in 'HVAC' started by boatpoor, May 13, 2020.

You need to be registered and signed in to view this content.
  1. boatpoor

    boatpoor Member

    Joined:
    May 4, 2016
    Messages:
    68
    Location:
    32407
    1992 Post 46 cockpit compressor running but freezer won't cool. I don't have any documentation and can't find a name on it anywhere. Does anyone have an idea what freon would have been used back then? R12?
  2. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    8,429
    Location:
    Satsuma, FL
    There is a tag or part number stamped on the compressor somewhere. Google it and look for the Freon type used.
    There are a few different oils only compatible with different gasses so you can not just shoot anything in there.
  3. boatpoor

    boatpoor Member

    Joined:
    May 4, 2016
    Messages:
    68
    Location:
    32407
    Thanks Ralph. I know ther is a number somewhere but I haven't located it yet. Rigging up some better lights now. I can see where a tag used to be but that's it so far.
  4. rtrafford

    rtrafford Senior Member

    Joined:
    Jul 13, 2019
    Messages:
    555
    Location:
    Ft Lauderdale
    Camera on phone with a flash?
  5. 45SS

    45SS New Member

    Joined:
    Sep 12, 2018
    Messages:
    9
    Location:
    New Jersey
    My hunch would be r22 but you need to be sure.
  6. boatpoor

    boatpoor Member

    Joined:
    May 4, 2016
    Messages:
    68
    Location:
    32407
    It's R22, I figured it out today.
  7. boatpoor

    boatpoor Member

    Joined:
    May 4, 2016
    Messages:
    68
    Location:
    32407
    Correction...R12
  8. wdrzal

    wdrzal Senior Member

    Joined:
    Feb 6, 2006
    Messages:
    402
    Location:
    Baltimore
    One caution to the tag on the compressor. That's what refrigerant it was designed for. Many R-12 systems were flushed , oil changed and 134a was dropped in. When R-12 reached $1200.00 for a #30 pound jug. To the OP, R-12 mineral oil is compatible with R-22 but not R-134a.
  9. wdrzal

    wdrzal Senior Member

    Joined:
    Feb 6, 2006
    Messages:
    402
    Location:
    Baltimore
    In the 1980s before the "Montreal Protocol" when into effect R-12 cost me $26.00 for a #30 pound jug.
  10. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    8,429
    Location:
    Satsuma, FL
    In the old days, the color of the oil helped identify the type of oil. Sadly, the new synthetic oils and new blends seem to not adhere to colors of oil any more.
    OR, I just can not find it on the web.

    Not to be confused with the Freon bottle colors.

    I have a feeling it is NOT R12. Small fridges and ice makers had a different curve (vs cars and houses) with R designs after Ammonia and propane.
    BTW, R290 is one of my Faves. Just nobody uses natural Freon any more. Something about blowing up???

    I'm leaning to R410.

    There was this same question a while ago. Maybe 2 years ago?? Grab a few beers and start digging.
    Thing Skip had this question also in his later Cabo, so 2 previous threads to search.
  11. Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    8,429
    Location:
    Satsuma, FL
    I used to pick up R12 cheap in the islands. Still have 2 small cans in my inventory.