Results 1 to 3 of 3
  1. #1
    Join Date
    Jul 2006
    Location
    MN
    Posts
    173

    Oil questions conversion 404a

    Copeland mn#LACA-0131A-TAC-800 sn#CT98102235

    Putting a closed up bakery on line after a 4 year shutdown. System is at least 30 years old no condenser tag.

    W/IN freezer system flat leaks found and fixed.

    Now converting to 404A... was HP80.... before that was 502.

    Dont have a refractometer or whatever. Any other way to determine what oil was/is in there??
    Due to the clarity, cleanness of the oil I suspect AB but not sure. Using POE.

    Anyone know what that comp was shipped with? will call in am to distributor.

    Its been a while since I have done a conversion.
    Potentially still a bunch of oil trapped in the recievers below only pulled maybe a couple quarts from comp holds like 80 oz. charge
    I know 5% low mix acceptable by copeland any isssues with higher mix concentrations?

    Thanks

  2. #2
    Join Date
    Jun 2005
    Location
    Las Vegas NV
    Posts
    1,139
    Quote Originally Posted by airon View Post
    Copeland mn#LACA-0131A-TAC-800 sn#CT98102235

    Putting a closed up bakery on line after a 4 year shutdown. System is at least 30 years old no condenser tag.
    airon,

    Even though the system is 30 yrs old, the compressor is a 98 yr model. The -800 at the end of the model number tells you it is a wholesaler model number replacement, not the original OEM compressor which was probably a LAC1-0300-TAC -2??. The compressor you have came with alky-benzene oil (the A in 031A) tells us that.

    Here is the link to the Copeland AE bulletin which will help you with the conversion.

    Section: 26
    94-15 Refrigerant Changeover Guideline
    http://www.hvacrinfo.com/ae_index.htm

    Regards.............Powell

  3. #3
    Join Date
    Jul 2006
    Location
    MN
    Posts
    173
    Thankyou Powell

    Yeah I knew it was a 98 model changeout. guess I should have know the A too but didnt register.

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