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  1. #1
    Join Date
    Oct 2003
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    tidewater, va
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    2,136

    York shell quandry

    York types:
    I have a YKNBMCHO-CPC that I am going to be starting up soon. This is a "C" style machine, using control panel #371-01200-004. It is a cooling only machine, Non-VSD/VGD, with a fixed orifice.Just finished the overhaul and pumped about 900 pounds into machine. Charge is R134a, and this is the amount I pulled.
    The original start up tech did not log the start up evap approach or amount of charge on the unit and I have consulted 160.49-01. and according to the shell code chart, I should have 1905 lbs of R134a. This is only a 450 ton machine. I did consult 160.49-02, on a whim, and the same shell codes call for 1650 pounds of charge. Both pertaining to a "C" style machine. I lend more credence to 160.49-01 due to the age of the machine (1994), even though both manuals state that they cover the numbers on the dates. the only difference is the panel#.
    I will check sight glasss levels after start up and charge by approach, but can these shell charges be accurate? seems awfully high. any input is appreciated.

    r404a

  2. #2
    Join Date
    Sep 2007
    Location
    Somewhere in the world.
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    I would have to look it up and get back to 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 !

  3. #3
    Join Date
    Sep 2007
    Location
    Somewhere in the world.
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    check your M/N again your missing 3 digits should be YK then cooler code then condenser code then compressor code look at IOM 160.49.02 figure 4 will give you the charge number for 134a
    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 !

  4. #4
    Join Date
    Oct 2003
    Location
    tidewater, va
    Posts
    2,136
    york

    thanks. I have "YK" then "NB" for cooler and "MC" for condenser and "HO" for compressor. the shell charts only give the first digit of each heatexchanger "N" and "M" in my case. thanks.

    r404a

  5. #5
    Join Date
    Sep 2007
    Location
    Somewhere in the world.
    Posts
    1,601
    From what I checked I would put 1650 lbs. check level in glass with machine down refer to the page I listed before , should get you where you need to be. Good luck.
    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 !

  6. #6
    Join Date
    Oct 2003
    Location
    tidewater, va
    Posts
    2,136
    York,
    thanks for the help. I started it today and at 1000 pounds of charge approach was WAY too high and could almost see a little liquid peak under bottom glass. Ran for a while and will get more charge tomorow. I am going to weigh in 300 pounds, check it, then another 300 and shut down for shell check. thanks again.


    r404a

  7. #7
    Join Date
    Feb 2006
    Location
    SouthEastern Virginia
    Posts
    1,075
    Hey r,

    Does the "r" in r404a stand for Rudy Sarzo?

    The Duke
    It might get loud!

  8. #8
    Join Date
    Oct 2003
    Location
    tidewater, va
    Posts
    2,136
    Duke...I wish...how was your lunch the other day?


    I got this one back online at 1600 pounds of charge and approaching well at the load range.

    thanks for the insight guys...now for another post...

    r404a

  9. #9
    Join Date
    Jul 2006
    Location
    The Great country of Texas
    Posts
    429
    Not that this applies but watch the literature on York refrigerant charges. YT's with and without varable orifices have different charges. Not a little but a bunch!
    "I'm from Texas, what country are you from?"

  10. #10
    Join Date
    Oct 2003
    Location
    tidewater, va
    Posts
    2,136
    thanks for the replies


    r404a

  11. #11
    Join Date
    Feb 2006
    Location
    SouthEastern Virginia
    Posts
    1,075
    r,

    How about a new photo in your heading. How about your van with the "V-3" emblem on the side? That may generate some conversation.

    The D_ _ _
    It might get loud!

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