Results 1 to 6 of 6
  1. #1
    Kato's Avatar
    Kato Guest

    Outside Operating Temperature for a refrigerator


    I have an old Westinghouse (c1964) refrigerator as an extra in my garage.

    My question is: As winter is coming, does anyone know what the minimum outside operating temperature is for this fridge (or just your run-of-the-mill home refrigerator)?

    Also, what problems occur if you run a fridge below this minimum?


  2. #2
    Brian_UK's Avatar
    Brian_UK is online now Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Rep Power
    I'm not conversant with your fridge model Kato but one thing that would concern me is the temperature that the compressor will go down to.

    With a cold, or very cold, compressor the oil inside it will be sluggish possibly causing motor start up problems. There is also the fact that the refrigerant will have migrated to the coldest spot, namely the compressor, and this refrigerant will wash away any lubricant on start up.

    The first thing I would suggest is that you fit a crankcase heater to the bottom half of the compressor and provide a permanent power supply to it. This should, I say should, help preserve the life of your long standing friend.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015
    Please support

  3. #3
    Join Date
    Apr 2001
    Southern England
    Rep Power

    Smile Colder Still

    Depending on the Class rating lowest Class SN 10Deg C and Class N 16 Deg C.

    Normally the rating class is on the back. These were the manufacturers limits. There was a discussion on this on some time ago. The seach words should be low and ambinet or or course derek!

  4. #4
    Kato's Avatar
    Kato Guest
    Thanks for the input!


  5. #5
    Join Date
    Feb 2001
    Rep Power
    The problem with low ambient is that you have very low head pressures which in turn means a lower pressure drop at the metering device, if you even have any liquid refrigerant making it that far.

    You can cover the condenser simulating a higher ambient temperature and causing head pressure to raise creating more liquid in the condenser, creating a liquid seal at the capillary tube. Tricky part is that you have to adjust it as the actual ambient temperature rises and falls. If you really want to get savy you can install an automatic dampering system to do it for you as the ambient changes or by head pressure. Or you might even get away with a headmaster... depending on the condenser type.

    If you really like the unit.... take it in the house... alittle more brawn is required but definitely less expensive than retrofitting to meet low ambient conditions.

    Extinction is simply proof of failure to adapt.

  6. #6
    Kato's Avatar
    Kato Guest



    I think that the easiest solution is to bring it inside ... I turned it off last year during the winter and I'll do it again this winter. We're moving into a bigger house come springtime so it's new home will be the basement of the new house.


Similar Threads

  1. CARE refigerants by BOC
    By dogma in forum Refrigerants
    Replies: 8
    Last Post: 23-03-2010, 12:39 PM
  2. re ref. circuit
    By shsalameh in forum Fundamentals
    Replies: 5
    Last Post: 06-08-2007, 12:59 PM
  3. Q=? h1=? mechanical schematics
    By fridg in forum Technical Speculations
    Replies: 22
    Last Post: 19-03-2006, 01:43 PM
  4. Article in ACH&R News
    By Gary in forum Fundamentals
    Replies: 8
    Last Post: 20-05-2003, 12:27 AM
  5. Replies: 5
    Last Post: 16-10-2002, 12:38 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts