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  1. #1
    Join Date
    Oct 2019
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    Confused emergency switch button

    What will be the consequence of frequent using of emergency switch button when shutting off chiller?

  2. #2
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,164
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    Why are you using it?

    My carriers push it once and the chiller would slowly ramp dawn and shut off. Push it twice and full shut off, then back spin. No oil was being pumped during these few seconds just like a power failure. No good for the machine.

  3. #3
    Join Date
    Oct 2019
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    6
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    Thread Starter
    We used the emergency button because when OFF button was pressed on the touchscreen it wont activate. However, all the other buttons were functioning normally.

  4. #4
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    27,164
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    Quote Originally Posted by YROLL View Post
    We used the emergency button because when OFF button was pressed on the touchscreen it wont activate. However, all the other buttons were functioning normally.
    Does it go thru a normal shutdown or just immediately stop?

  5. #5
    Join Date
    Oct 2019
    Posts
    6
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    Thread Starter
    Yeah it stops immediately (turbocor compressor)

  6. #6
    Join Date
    Nov 2011
    Location
    East Side
    Posts
    7,469
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    Turbo core is a maglev shaft. When you hit E-Stop, the shaft crashes into the touchdown bearings, instead of slowing, stopping, then setting down on the bearings. Continued crash will likely cause bearing issues.

  7. #7
    Join Date
    Mar 2017
    Location
    Orange County, CA
    Posts
    85
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    Are you referring to a WMC? If so, open up the control panel, you can shut off the compressors individually, and they will shutdown normal.


    Sent from my iPhone using Tapatalk

  8. #8
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    3,328
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    Its called “Emergency Stop” for a reason .
    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' !!

  9. Likes stanbyyourword liked this post.
  10. #9
    Join Date
    Jun 2008
    Location
    Windsor, Ont.
    Posts
    787
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    Assuming this is the Multistack chiller from your other post.... the E-stop should be a digital input to the chiller control system which should disable all running compressors immediately. The compressors themselves should shutdown more or less normally as they should still have main power to spin down and then de-levitate the shaft.

  11. #10
    Join Date
    Oct 2019
    Posts
    6
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    Thread Starter
    Multistack

  12. #11
    Join Date
    Sep 2009
    Location
    So Cal
    Posts
    62
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    On the MultiStack, you should be able to hit the system switch on the top right corner of the display to shut down the Chiller Locally. If that's not working, then have the Rep reprogram that function.

    Air Treatment Corp is the local rep in this part of the woods and they did that config adjustment for a job site that I'm on. That chiller starts/stops via remote Hardwired Enable Command on DI-1 from the BMS System. The engineers can go up to the chiller and shut it down locally by tapping on the system switch on the display.

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