Page 4 of 5 FirstFirst 12345 LastLast
Results 40 to 52 of 53
  1. #40
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,609
    Quote Originally Posted by mr hottstepper View Post
    im not tryin to argue or make enimies,or waste time im a contractor trying to make money and learn cuz i really love thermodynamics, just like u , and i think i have a valid question and a problem thats worth bringing forward and i have tried most of what was recommended by other members before so i dont think im that bad off.im from the caribbean btw , i tend to get a little beside myself sometimes , . dude i jus wanna get the equipment running ,i just asked for a lil help im sure when u started to work on these equipment you didnt know everything, but i welcome a challange cuz this isnt really a js compressor or screw,or gas fired absorb system,or one of those tecogen natural gas engine driven chillers, it is a piece of work and i really wanna see this job tru, ....and if u guys think thats something they want me to overhaul the backup cvhe chiller from pre rotational veins the works befor the year ends , the bearings in the motor are singing away, i alreddy signed up to go la croose for cvhe mechanical but they said i have to do cvhe fundementals first,but cuz of my good business with them they will try get me in the mechanical on nov 1st but i cant leave the equipment hanging till then, so im here jus tryin get some advice frm u guys, beside how would u like it if u went to get a light bulb in the supermarket and they told you they only sell light bulbs to electricans. u doh hav to gimme such a hard time because i dont no more about low pressure centrifugal than you.
    No offense intended. I wish you the best of luck in figuring out where your problem lies.

  2. #41
    Join Date
    Jan 2011
    Location
    tt, west indies
    Posts
    127
    Quote Originally Posted by mr hottstepper View Post
    NOPE theres no exchanger on the condenser frame actually looked to see if it had one cause i had to do the same with a carrier XRV centrifugal last year but it was 134a not vaccum. i even inspected the rapture guard ,cuz that has a way of spoiling a good day.
    Quote Originally Posted by klove View Post
    No offense intended. I wish you the best of luck in figuring out where your problem lies.


    NO PROB DUDE, i jus needed some insight in the low pressure side of the system cause i saw so many potential problems and i'm not that much of a low pressure chiller guy

  3. #42
    Join Date
    Jul 2008
    Location
    LOS ANGELES
    Posts
    24
    you said there was another trane of the same model/ser does it have the same purge to compare ? do you have a low pressure pumpout unit handy and a recovery drum..... have you leak tested not just by purge count? consider a new purge or a REDI PURGE sorry i keep reading post again , verify cond flow delta p, do a gpm calc & compare to design if you can get it

  4. #43
    Join Date
    Oct 2011
    Location
    New Hampshire
    Posts
    22
    Have you let the machine sit and checked pressures? Possible someone added R-11?

  5. #44
    Join Date
    Mar 2010
    Location
    Va.
    Posts
    180
    Check the purge valves and make sure they are open. Sounds obvious but someone could have serviced the purge and left them closed. Clogged orifice or closed pump out solenoid will cause the suction temperatures to remain low if the tank is full of air. When you brushed the tubes did you check them for scale? What's the saturated condenser temperature? The attached PDF has an trouble shooting guide that will show you were to take your readings and what they should be.
    Attached Files Attached Files

  6. #45
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,045
    Quote Originally Posted by mr hottstepper View Post
    NO PROB DUDE, and i'm not that much of a low pressure chiller guy

    These are the key words in all of this thread
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  7. #46
    Join Date
    Jan 2011
    Location
    tt, west indies
    Posts
    127
    Quote Originally Posted by Phisher View Post
    Check the purge valves and make sure they are open. Sounds obvious but someone could have serviced the purge and left them closed. Clogged orifice or closed pump out solenoid will cause the suction temperatures to remain low if the tank is full of air. When you brushed the tubes did you check them for scale? What's the saturated condenser temperature? The attached PDF has an trouble shooting guide that will show you were to take your readings and what they should be.
    the valves were open, i headin back down to the sight tomorrow so ill be sure to use all the info i got thanks for the serv bulletin especially, and thank you every body else let you guy know how it goes tomorrow

  8. #47
    Join Date
    Oct 2009
    Location
    USA
    Posts
    48
    Don't forget what I said. Inspect the compressor for worn out valves. additionally; it was common for the expansion valve to plug up with sludge. When this happens the compressor becomes a vacuum pump and it's toast as well. My vote (from 17 years at Trane) bad condensing unit. This is a long distance diagnosis mind you

  9. #48
    Join Date
    Mar 2011
    Posts
    258
    Quote Originally Posted by mr hottstepper View Post
    the valves were open, i headin back down to the sight tomorrow so ill be sure to use all the info i got thanks for the serv bulletin especially, and thank you every body else let you guy know how it goes tomorrow
    I'm guessing your in Trinidad and Tobago, West Indies? Trane Service in Miami has techs that travel the Caribbean. I suggest giving them a call and having a tech go down to check this machine out for you. They could probably have it figured out in under an hour. If you need the phone number send me a PM.

    You could also call Trane Puerto Rico, they could send someone down also, but I don't know their level of expertise.

  10. #49
    Join Date
    Jan 2011
    Location
    tt, west indies
    Posts
    127

    Thumbs up

    Quote Originally Posted by mr hottstepper View Post
    THE manual guage is reading the same. Purge compressor running its jus not pumping out which means there iss no air but still, the hi pressure issue is still there, this morning it was 92f, water temp was 51 dropped setpoint to 46 wen system loads pressure gradualy goes up to 16 and cut off on hi press cutout. i really dont hav much experience with the purge unit changed the purge drier yesturday incase it was saturated, at this point im totally lost
    well i went back to the site today and met the unit purging on its own i loaded it up and condenser pressure is 13.5, 95% current and system is purging , .so according to the service bullitin "after you change the drier wait 72 hours to allow system to remove moisture properly",so the drier was definately saturated .. (i saw that a little to late) as luck would have it today is the 3rd day since i installed the drier. guys im so sorry for wasting your time ,but i thank you soo much for all the help and advice you gave me, if any of yall ever comin to d caribbean holla at me ill hook u guys up good ..

  11. #50
    Join Date
    Jan 2011
    Location
    tt, west indies
    Posts
    127
    now its onto changing out the bearings on the other cvhe, any body got a manual for that by chance? although i think trane might send a bullitin with the bearings, but i wanna change the seals in it as well , can or if u dont have a manual can any of u guys tell me if the seal to impeller clearences are the same as the cvhf?

  12. #51
    Join Date
    Jan 2011
    Location
    tt, west indies
    Posts
    127
    Quote Originally Posted by TheChillerMan View Post
    I'm guessing your in Trinidad and Tobago, West Indies? Trane Service in Miami has techs that travel the Caribbean. I suggest giving them a call and having a tech go down to check this machine out for you. They could probably have it figured out in under an hour. If you need the phone number send me a PM.

    You could also call Trane Puerto Rico, they could send someone down also, but I don't know their level of expertise.
    i cant seem to private message ill e-mail u

  13. #52
    Join Date
    Jan 2009
    Location
    Not in Iran
    Posts
    1,091


    This was / is a good thread!!

    1.Condenser pressure 116*= 13.5psig

    2.So by leaving water temp converted to psig 96*=4.6psig

    3.Equals = 8.9psig



    I did not realize that leaving water temp was used
    to determine if air was present.
    Last edited by milkyway; 09-03-2012 at 11:00 AM. Reason: Adding
    no signature blast'em man blast'em
    !!!KILL THE TERRORIST!!!

Page 4 of 5 FirstFirst 12345 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event