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  1. #27
    Join Date
    Feb 2014
    Posts
    9
    Post Likes
    Thread Starter
    Thank you all for your replies. I haven't responded in a few days due to high customer load and dealing with other malfunctions (not related to this cabinet). I have tried everything here and lots of things that are not before we finally decided to evacuate the system. I'll be changing drier cores as well while it's empty. I'll post again when we do this as we figure out exactly what's going on.

  2. #28
    Join Date
    Sep 2019
    Posts
    1
    Post Likes
    Hello all, from what I’ve made of this thread, the discharge pressure takes seconds to trip the HP. And without a restriction in the discharge line that could cause this, i’d Suggest checking the valves on the valve plate ( especially if no check valves are in the discharge line), it might be bleeding refrigerant back from the condenser whilst not running and forming as liquid in the cylinder. Then at start up it’s compressing liquid refrigerant which will give an immediate and massive increase in discharge pressure, I’ve seen a compressor blow the head completely off because of a faulty HP In this scenario. Hope this helps

  3. #29
    Join Date
    Feb 2014
    Posts
    9
    Post Likes
    Thread Starter
    I should have updated a long time ago... we found the cause to be blown seals inside of the chiller barrel allowing gases from one compressor to enter another. We decided the best course of action was to replace the entire unit with a more efficient 100 tonn dual-screw compressor unit and haven't had any issues since.

    The company that originally installed the unit did not calculate head and just stuck a HUGE pump on the brine system, which was flowing at almost double the maximum rated capacity for the chiller barrel.

  4. #30
    Join Date
    Nov 2011
    Location
    East Side
    Posts
    6,691
    Post Likes
    holy crap, and then one gets updated after 5 years!

  5. #31
    Join Date
    Jan 2010
    Posts
    17,323
    Post Likes
    after a New Guest resurrected it

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