YORK YK CHILLER
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  1. #1
    Join Date
    Aug 2012
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    YORK YK CHILLER

    Hi all,
    i m currently facing a problem on this YKDFDFP65CKF YORK CENTRIFUGAL CHILLER,
    when the chiller hit the setpoint 6.5c it cannot unload smoothly. it giving fluctuate reading on the display ( %FULL LOAD AMPS ) and continuous surging sound . The reading for chilled liquid temp- leaving at 6.5c, return at 11.6c, condenser liquid temp- leaving at 34.9c,return at 29.6c.Is there anyone here can give me some advice what going on and what must do. thank :anyone

  2. #2
    Join Date
    Jan 2011
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    1,113
    What are the design conditions? Your conditions indicate it's a 10*F machine. Incidentally, since this is a USA based forum many will pass up questions that require they convert temperatures to fahrenheit. It would help if you converted them before you ask your question.

    If you go to the sales order screen it should tell you what the design conditions are. Generally speaking, when a machine starts surging the actual head has exceeded the design head. The other piece of information that may help is the small difference (approach) in the condenser and the evaporator. On the York Optiview they are reported as "small difference" on the evaporator and condenser screens.

  3. #3
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    Prattville, Alabama
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    Quote Originally Posted by KnewYork View Post
    Incidentally, since this is a USA based forum many will pass up questions that require they convert temperatures to fahrenheit.
    Yeah, KnewYork's right, I'm one of those lazy ones...

  4. #4
    Join Date
    Aug 2012
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    My apologies. I'm situated in Singapore and all chillers' readings are in degrees celsius. Rather than explaining the issues in words, may i send you a video clip so that you can advice me appropriately? Chilled water leaving at 44F return at 53F, Condenser water leaving at 95F return at 85F!

  5. #5
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    Jan 2011
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    Send it to my email address, I'll post it on the thread. My email address is in my profile.

  6. #6
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    I know what it's doing. It's surging. I've seen it countless times. I'm trying to figure out why. Take a picture of the sales order screen, the evaporator and condenser screens and post them here. That may be enough. By the way, I had done the conversions...I knew what was happening from that standpoint. Now I'm trying to find out what the chiller was designed to do and see if you may have a problem in the either of the shells. Where in the condenser sight glass is the liquid level being maintained?

    Also if you could go into the setpoints>setup screen and change the units from Celcius to Fahrenheit before you take the picture I, for one, would greatly appreciate it.

  7. #7
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    Quote Originally Posted by KnewYork View Post
    Also if you could go into the setpoints>setup screen and change the units from Celcius to Fahrenheit before you take the picture I, for one, would greatly appreciate it.
    Actually, after logging in, go to setpoints>setup>user. Change the data display mode to English and the language to English (if it isn't already). That would help those of us who only speak English to help you.

  8. #8
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    Jan 2011
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    I got the photos and hopefully once uploaded here, all can see them. I'm a bit confused because there are photos from different chiller control panels. Are we trying to diagnose different problems or the one problem you are having (surging)? One thing you did that is to say chiller one is in operation when it's clearly not, because it's off on high heat sink temperature. Also you didn't provide a snapshot of the sales order screen so we could see the design specs of the chiller. Of all the other photos, nothing is jumping out at me right away. But it's 5:30 AM here, so nothing surprises me.

    Chiller Analysis.pdf

  9. #9
    Join Date
    Aug 2012
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    Hi knewyork advice taken! Thank! I will post you ASAP!

  10. #10
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    There are a lot of things that could be going on post all the operating data so we can all look at it please and thank you.
    Arguing with your Boss is like wrestling with a pig in
    mud.
    After a while you realize that while you are getting
    dirty, the pig is actually enjoying it.

    It is not exactly cheating, I prefer to consider it
    creative problem solving.

    25 years ago we had Bob Hope , Steve Jobs , and Johnny Cash today we have no Hope no Jobs and no Cash !
    I can fix broke but i can't fix stupid !

  11. #11
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    Jan 2011
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    Is there any way to get a photo of the sales order page? (In English units) YKs typically experience some surging when they are close to design temperatures and pressures. I want to make sure that this isn't a machine that was designed to deliver 45︒F chilled water. Doesn't this machine have a variable orifice? If so, it appears to be disabled since there is no level shown on the condenser screen.

  12. #12
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    Aug 2012
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    http://www.youtube.com/watch?v=c6BWp9TemoA

    Hi all it a short video clips just check it out!!!

  13. #13
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    Aug 2012
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    http://www.youtube.com/watch?v=M6n20f5ZmTw


    Hi all annoy the first video clip

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