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  1. #1
    Join Date
    Feb 2012
    Posts
    11

    trane chiller question

    hi i am working on a trane chiller the alarm is chiller water flow (ent wtr temp) we have changed sensor in evap barrel (inlet & outlet) & added water to system chill water side. it still going out same alarm .any more ideas?

  2. #2
    Join Date
    Dec 2009
    Location
    Southern US
    Posts
    504
    Yep!!!!
    I'm good at making things cold...You can ask my first two wives!

  3. #3
    Join Date
    Aug 2009
    Location
    Fort Lauderdale Fl
    Posts
    282
    Whats the entering and leaving water temp?

    Sent from my SPH-D710 using Tapatalk

  4. #4
    Join Date
    Feb 2012
    Posts
    11
    ent 62, lvg 64 why is ent lower then lvg then look out on alarm we hve read the trane manual page 5-29

  5. #5
    Join Date
    Aug 2009
    Location
    Fort Lauderdale Fl
    Posts
    282
    This might seem like a crazy question are you sure those sensors are not reversed?

    Sent from my SPH-D710 using Tapatalk

  6. #6
    Join Date
    Feb 2012
    Posts
    11
    well we did that and it started to work but not sure if that was the right thing to do. i'm a new guy working on chillers but not new to hvac work just trying to stay float

  7. #7
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    1,985
    I can tell you are very unsure about what you are doing so please, call someone who is sure about it. Do not change the sensors around.
    UA LU189

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

  8. #8
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,353
    Quote Originally Posted by zw17 View Post
    I can tell you are very unsure about what you are doing so please, call someone who is sure about it. Do not change the sensors around.
    double down on that advice.

    there are several things that could be happening. the sensors could be reversed although it is unlikely. you could have a bunch of crud in the bottom of the evaporator where the entering water temperature is located. you could have pushed the new entering water temperature sensor in too far. you could have very low flow. you could be missing your internal water baffles. you could have a poor system design where an existing chiller that is running and making cold water 'shocks' this chiller at start up.

    get someone in there that can teach you what to look for. pick the 'wrong' solution and you could be buying a new chiller...i don't think that would keep you a float much.
    "Mother" is the name for God on the lips and hearts of children....The Crow

  9. #9
    Join Date
    Aug 2006
    Location
    Columbus Ohio
    Posts
    1,985
    I just was thinking about it and if you switched around the EEWT and ELWT sensors in the right way and under the right conditions (which I believe you are) you run a very real risk of freezing the barrel.

    Stop what you are doing, put things back the way they were, and call for some help.
    UA LU189

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

  10. #10
    Join Date
    Feb 2012
    Posts
    11
    this chiller has been there for five years with no problems .this chiller has no bypass on cooling tower. it seems do this on cold mornings 18 degree f

  11. #11
    Join Date
    Feb 2012
    Location
    EVERYWHERE
    Posts
    228
    what is the model#?

  12. #12
    Join Date
    Feb 2012
    Posts
    11
    do not have it will get it

  13. #13
    Join Date
    Feb 2010
    Location
    MEXICO
    Posts
    472
    reviewed and water filters, or diffusers water pumps

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