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  1. #1
    Join Date
    Jul 2003
    Location
    Texas
    Posts
    296

    Hmm cvhe250, 1989 vintage model

    what would cause the compressor discharge temperature to run hot around 160 degrees at 45 % load. there is no issue with condenser or evaporator water flow,no non condensibles, charged was weighed in with a micron test of 500 microns. chiller makes capacity just notice the discharge runs hot and the economizer pipe nearest to the discharge is also very warm. any ideas???

  2. #2
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472
    aproach which is the condenser?

  3. #3
    Join Date
    Jul 2003
    Location
    Texas
    Posts
    296
    1-2 degrees

  4. #4
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472
    readings of the machine will have in operation?

  5. #5
    Join Date
    Jul 2007
    Location
    The Hot South
    Posts
    1,317
    Post a complete log.

  6. #6
    Join Date
    Aug 2000
    Location
    USA
    Posts
    4,990
    Its running unloaded, not a large enough volume of gas to cool the discharge down. Once it loads up the discharge temp will drop.
    Your poor planning does not constitute an emergency on my part!!!!

  7. #7
    Join Date
    Mar 2007
    Posts
    3,108
    In my experience R-11 machines, and particularly small R-11 CVHEs run high discharge temps to begin with. When you say 45% loaded, are you talking about %RLA or is 45% an approximation of the vane position? If it's 45% RLA, the chiller's unloaded and that's why your discharge temp is high.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  8. #8
    Join Date
    Jul 2003
    Location
    Texas
    Posts
    296
    I figured unloaded was the issue, it is a r11 machine, when i ruled out the noncondensibles it made sense, however ive seen other machine similar run between100 to 125 degrees. I know the carrier 19dk are famous for getting hot when they have noncondensibles. Ill load it up and test it once again. The building added rtus for some areas which took load off the chiller.....ill follow up
    By the way all the approaches ard right on the money.

  9. #9
    Join Date
    Jul 2003
    Location
    Texas
    Posts
    296
    Thanks guys

  10. #10
    Join Date
    Mar 2007
    Posts
    3,108
    You're welcome.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

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