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  1. #1
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    1,985

    Oldest one I have ever worked on

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    She is hanging on by a thread but still functional.

    Anyone know what the date code decodes to?
    UA LU189

    10mm, because it's better than .45acp

  2. #2
    Join Date
    Jul 2011
    Location
    East coast USA
    Posts
    962
    i want to say 1989 or 1990. They look the same as the ones i had...I had a few that was air cooled and water cooled.

  3. #3
    Join Date
    Aug 2006
    Location
    Vancouver , Canada
    Posts
    297
    ZW17:
    I have a few 1989/1990 vintage units here and they all have the ' 00 ' board which is the version just after what you have - I have worked on units like the one you listed, but I am inclined to say mid - late 80's.

    I have been working on Lieberts since the early 80's, but my brain is getting fuzzy - there will be someone out there with a definitive answer.

    Good photos!

    Freonguy CM
    Superheat and subcooling tell it all !

  4. #4
    Join Date
    Mar 2007
    Posts
    3,108
    Wow! Not many of them around! I think I have seen one or two in my travels. Oldest one I take care of at the moment is a 1991 model with the Level 10 controls. I upgraded an early 90s Level 00 to AM about 5 years ago and it's still running strong as far as I know.

    Cool pictures, thanks for posting them!
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  5. #5
    Join Date
    Aug 2012
    Posts
    15
    89. I have worked on and replaced ones from the 70's down here in Louisiana

  6. #6
    Join Date
    Aug 2006
    Location
    Vancouver , Canada
    Posts
    297
    [QUOTE=Tech Rob;14036911]Wow! Not many of them around! I think I have seen one or two in my travels. Oldest one I take care of at the moment is a 1991 model with the Level 10 controls. I upgraded an early 90s Level 00 to AM about 5 years ago and it's still running strong as far as I know.

    TechRob:

    I have 3 on site ( 1990 vintage ) that I have upgraded from 00 to AM in the last couple years - works great!

    Freonguy CM
    Superheat and subcooling tell it all !

  7. #7
    Join Date
    Feb 2004
    Location
    New Mexico
    Posts
    5,495
    I wouldn't call it old. Maybe numerically challenged. I remember a job at the air base here where I moved the control panel on one of these to another room and ran the wires back to the unit. It must have been awhile ago because I remember drawing the schematic using Generic Cad.
    Tracers work both ways.

  8. #8
    Join Date
    Jun 2010
    Location
    Miami
    Posts
    257
    That ain't nuthin. My liebert has pnuematic controls. 1978 vintage IIRC. Runs like a top.

    Now if you want a real laugh....I have AHU controls.....old barber-coleman....that run on vacuum tubes....that are still on-line.

  9. #9
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    1,985
    Quote Originally Posted by Russ57 View Post
    That ain't nuthin. My liebert has pnuematic controls. 1978 vintage IIRC. Runs like a top.

    Now if you want a real laugh....I have AHU controls.....old barber-coleman....that run on vacuum tubes....that are still on-line.
    Pics or it never happened.
    UA LU189

    10mm, because it's better than .45acp

  10. #10
    Join Date
    Jun 2010
    Location
    Miami
    Posts
    257
    Hmm, so now I'm a liar? Let me get through this hurricane and I'll see if I can figure out how to post a pic.

    Pray tell, what is better about a 10mm?

  11. #11
    Join Date
    Aug 2010
    Location
    Memphis
    Posts
    343
    We currently have 3 1983 models with both dx and the econo coil (chilled water coil). They are all in pretty fair shape still.

  12. #12
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    1,985
    Quote Originally Posted by Russ57 View Post
    Hmm, so now I'm a liar? Let me get through this hurricane and I'll see if I can figure out how to post a pic.

    Pray tell, what is better about a 10mm?

    No, I am not calling you a liar. I just want to see this beast.
    UA LU189

    10mm, because it's better than .45acp

  13. #13
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    What are they big AC for computer rooms? I have never seen one. Probaly due to my age

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