Results 1 to 2 of 2
  1. #1
    Join Date
    Dec 2012
    Location
    Kuwait
    Age
    53
    Posts
    24
    Rep Power
    0

    York pc compressor unloading problem



    Hi,
    Can anyone think for expert solution on the following problem, kindly suggest if you have any idea in this.

    Ambient Air cooled Liquid chiller
    York model - YAEP99WD9C50PA
    controller - YAEP
    Compressor - York PC, 8cylinder, 2 unloader valves

    Problem is with compressor loading
    Compressor is running at 45% load continuously, not going in load.
    Running parameters are
    SP-75, DP-285, Oil pr-60, current-45%, temp setting 52-56, LWT - 68
    checked- solenoid valves electric supply, not present (i assume there shouldn’t be for loading)
    What could be the reason for continuous unload? i suspect any stuck up of unloader valves in side compressor but how is it possible for both at a time or any other reason could be?
    Kindly suggest,
    Thanks in advance
    Regards
    T.V.Rao



  2. #2
    Join Date
    Sep 2007
    Location
    Somerset
    Age
    64
    Posts
    4,590
    Rep Power
    39

    Re: York pc compressor unloading problem

    Hi TV RAO.
    Sorry as your settings are in imperial and you don't say what refrigerant you are using?
    I not going to try and analyse your running parameters.
    But I will ask what does the display called "Temperature demand" on the Micro controller say?
    Only there are several Controller settings that can and do influence the "Load Rate and how the Compressor loads up and down.
    When reading those displayed settings press the status button and read what is displayed.
    What is displayed may help?
    Grizzly
    Despite the High Cost of Living it still remains Popular!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •