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  1. #1
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    Nov 2008
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    York millennium ycch163 rotary screw compressor



    I understand the slide valve operation, but I do have a question about when the system is down. On this particular chiller there is no external oil pump to drive the slide back to minimal position for start-up. I can only assume (which I hate to do) that there is an internal spring that forces the slide back to minimal position, or ?? Thanks.



  2. #2
    Join Date
    Jul 2007
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    Re: York millennium ycch163 rotary screw compressor

    Yes, the spring is forcing unloading.
    Josef.

  3. #3
    Join Date
    Feb 2006
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    Hampshire
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    Re: York millennium ycch163 rotary screw compressor

    What's the compressor? Is it the dxs?

    If you're having load / unload issues, it's not unknown for the springs to break on these and require replacement.

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