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  1. #1
    Join Date
    Jun 2010
    Location
    West Kentucky
    Posts
    19

    Unloaders or Valves?

    Hey guys,
    I have read several of the threads concerning Carlyle unloaders but I am still not sure of what my problem may be. I have a Carlyle 06D compressor, 6 cylinder with two pressure controlled unloaders. R22 with 200 psig head and 100 psig suction. The unit starts off at these pressures. I have a feeling that both unloaders may be the problem but everything I have read seems to indicate that they should not unload unless suction pressure is low. Also, at least one of them is leaking at the control setpoint adjustment nut. If the diaphram is leaking wouldn't this cause the unloader to stay in the unloaded position? Is it sensible that both unloaders has failed? I did not do a pump down test to see if my valves are leaking by. Oh yeah, my space temp is 76* and OAT was 85* so I should definitely have enough load. How do I determine whether I am looking at an unloader problem or a valve problem?

  2. #2
    Join Date
    Oct 2005
    Location
    Phoenix, Arizona
    Posts
    353
    start by attempting to pump down the compressor
    RTFM!!!

  3. #3
    Join Date
    Jun 2010
    Location
    West Kentucky
    Posts
    19
    I guessed that might be my reply. I just didntThink of it at the time. I got hung up on those unloaders thinking they may be the problem, I couldnt see the forest for the trees.

  4. #4
    Join Date
    Feb 2011
    Location
    colorado mountians
    Posts
    117
    Shut down the suction king valve slowly and watch an amp probe to check/ set those unloaders along with the suction gage

  5. #5
    Join Date
    Apr 2006
    Location
    mechanical room
    Posts
    1,255
    well the first thing i would do is find the rla on the compressor, and compare it to your actual amps

  6. #6
    Join Date
    Apr 2007
    Location
    Pa
    Posts
    758
    Check valves. Did you check heads to see if one is hotter than the other?

  7. #7
    Join Date
    Jul 2007
    Location
    New Jersey
    Posts
    3,031
    Quote Originally Posted by HvAckid82 View Post
    Check valves. Did you check heads to see if one is hotter than the other?
    you get an asterisk for that
    “If I have seen further than others, it is by standing upon the shoulders of giants.” ~ Sir Isaac Newton


    I'm learning all the time, the tombstone will be my diploma!!!


    Did you ever stop to think, and forget to start again?

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