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  1. #27
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    Sometimes he looks like one too!!! But I do not employ them for their looks???

  2. #28
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    Feb 2010
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    Thread Starter
    A few split pins, dowelling, one seal tight, the rest so wide ???.

    Why don't we make some easy money, and get the chw plant doing what it should be.

    Any monkey can rebuild a chiller , takes a smarter monkey to do both.

  3. #29
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    Jan 2012
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    Getting chillers to do what it was designed to do is simple. Most chillers are reprogrammed to suit the problems of the site or incorrectly selected through inexperienced salesman.

  4. #30
    Join Date
    Mar 2004
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    ottawa canada
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    Quote Originally Posted by rover View Post

    Any monkey can rebuild a chiller
    This maybe correct , but can the monkey do it right and make it work properly ? JMHO
    The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage and yes it still gives me goosebumps
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    In the new big shop , greasin', oilin' . tweakin' n shinin' !!

  5. #31
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    true knowledge exists in knowing that you know nothing.

  6. #32
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    true knowledge exists in knowing that you know nothing.

  7. #33
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    true knowledge exists in knowing that you know nothing.

  8. #34
    Join Date
    Feb 2010
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    Thread Starter
    My experience,


    My experience,

    Run into one of these Trane gurus??, 15 years working as a mechanic.

    Installed an after market soft start upside down, (cheaper for the company he was employed with), every config. wrong inside delta, bla ,bla etc.

    Went in got the chiller running, hasn't faulted on aux, bla .bla yet, been running for three years.

    Obviously he didn't get the tick off list to install after market switchgear from TRANE, NOW THATS WHAT I CALL A MONKEY????

  9. #35
    Join Date
    Oct 2017
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    Hi everyone,

    I've started to work with a group of several Trane CVAE chiller (32). Do you know where I can find this chiller series catalog specifications?
    My first concern related to this machines is their poor performance, especially when compared to the new ones (even one stage).

    Thanks,

  10. #36
    Join Date
    Jun 2003
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    Need a little more info than that, I assume your referring to an older air cooled centravac running on 134-A, I dont think the CVAE model was ever introduced in the States (could be wrong), what country is the chiller in and do you have a specific question? Here in the states we had CVAA air cooled centrifugals that were R-12 back in the day, overhauled a handful of them. Complete model number and serial would be helpful.
    If you dont stand behind our troops, please feel free...........to stand in front of them.

  11. Likes kkmarus liked this post
  12. #37
    Join Date
    Oct 2017
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    Quote Originally Posted by chillrdude View Post
    Need a little more info than that, I assume your referring to an older air cooled centravac running on 134-A, I dont think the CVAE model was ever introduced in the States (could be wrong), what country is the chiller in and do you have a specific question? Here in the states we had CVAA air cooled centrifugals that were R-12 back in the day, overhauled a handful of them. Complete model number and serial would be helpful.
    Yap, they're in Europe
    They're air-cooled centrifugal Trane CVAE 32 chillers, installed in 1997 and already converted to R134a. I can give you, the serial number EKG5705 of one of them.
    My first impression is the low COP for nominal conditions, about 2.74...but from what I've seen it seems even worse at partial load working conditions.

    Some time ago I've worked with more recently Trane centrifugal chillers (CVGF - water ones), with better COP, around 6..Of course this is an older machine, but the difference is so big, and the partial load so poor. Is there a reason for this?

    I'm also interested in getting exterior air temperature influence in the chillers performance...I think that the product catalog has this...

    Many thanks,

  13. #38
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    They never were very efficient but filled a need before the RTAA came out, all the ones I worked on were R-12 not sure if the R-134A machines were ever sold here in the states, I'm pretty sure I have the service guide for the CVAA machines and I think the only difference in the CVAB or later was the micro, dont think I have a product guide and if I did it would be for R-12 machines.

    We had several catch on fire internally when the high speed bearing went out caught fire inside the machine, what a mess, had to scrap them after that.
    If you dont stand behind our troops, please feel free...........to stand in front of them.

  14. #39
    Join Date
    Nov 2004
    Location
    North Florida/South Georgia
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    Gears?! We don’t need no stinking gears!!!!!

    LOL

    Anyway, hello everyone, I’ve been quiet for a long while but it feels good to chime in.

    For me, it’s the refrigerant, part load efficiency, and overall reliability.

    I’m a low pressure guy it’s true. But even when we still 19D DG DH & DK machines as well as HT and YT machines, i was still a wheel mechanic at heart.

    But now that we have fewer low pressure choices, Trane my chiller of choice.

    Yes, I’m aware that 123 is going away but! So is 134a.......

    So an interesting question, will York or Carrier make a low pressure machine again???? I mean, why not?! Supposedly they got out because of the dreadful 123 anyway..... so, stay tuned....... right?!

    Having said all that, i still prefer direct drive low speed machines.

    Hey, you think Daikin will take a stab at a low pressure machine?? I mean since the replacement for 123 won be bad for gonads!

    What about TonRack? :-) think they’ll come back??

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