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  1. #40
    Join Date
    Mar 2007
    Posts
    3,108
    Thanks a lot for the comments, guys. I appreciate it.

    AiResearch, as far as the hypothetical McQuay air-run goes, I will leave that one alone for now lol

    Socotech, I do occasionally teach some classes for work now, although I would not call myself a seasoned instructor. I have a great deal of social anxiety and it's difficult for me to get up in front of people and be the center of attention and be the answer man. It never gets any easier for me, either... I guess I keep volunteering for it because I am a nerd and I do love to talk shop and share experiences with people who do the same stuff
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  2. #41
    Join Date
    Sep 2009
    Location
    Hampton, GA
    Posts
    529
    Quote Originally Posted by AiResearch View Post
    Rob a while back we had a conversation and I remember something about you relocating to the Tampa area. Haha I'm not that good. But a Floridian can tell its definitely Florida.

    Why not air run the McQuay.... Loose papers within 25 yards beware! No really a 126 unit 1,000 tonner would have a 12.6 inch wheel running at about 12,500 rpm after transition. The intake velocity might be extreme there for a minute and quite loud and dangerous. These units have expansion valves so the condenser would fill up almost immediately and the compressor would probably surge itself to pieces. Plus the chiller would be contaminated with air and moisture. Not as big of a deal with a low pressure Trane I'm sure.
    It sure does look like Florida! LOL, nice job and man that chiller looks like it is no joke!

  3. #42
    Join Date
    Dec 2012
    Location
    Hamilton Ontario Canada
    Posts
    103
    Quote Originally Posted by Tech Rob View Post
    Thanks a lot for the comments, guys. I appreciate it.

    AiResearch, as far as the hypothetical McQuay air-run goes, I will leave that one alone for now lol

    Socotech, I do occasionally teach some classes for work now, although I would not call myself a seasoned instructor. I have a great deal of social anxiety and it's difficult for me to get up in front of people and be the center of attention and be the answer man. It never gets any easier for me, either... I guess I keep volunteering for it because I am a nerd and I do love to talk shop and share experiences with people who do the same stuff
    Rob the picks and info is awesome , you just answered about about a million questions I had , reading about and seeing are two different things , maybe one day I'll get to do one , for someone who stands and wonders after reading lots of info the pics and comments really give me a better understanding , I wish there was more of this thanks again and cheers

  4. #43
    Join Date
    Mar 2007
    Posts
    3,108
    Glad you got something out of it, Troy! It sounds like you're getting good exposure to big duplex Trane machines where you work now, so you are already much farther along than I was when I turned out of my apprenticeship. As a newly minted journeyman, I was practically begging for the experience to take calls on air-cooled screw machines.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  5. #44
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    I just saw this thread Rob. Awesome! I have a brand new 900 ton York with two 500 ton back-up Yorks all on a research laboratory. I also have a 100 ton York due for a rebuild 1st quarter 2013.

    Just out of curiosity what refrigerant and how many pounds? Also do you know the motor HP and FLA?

    After almost 40 years in this business I just graduated into the realm of these huge systems. It's pretty cool.

    Once again Rob awesome pics! I'll try to get some more pics of my new playground soon.
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

    `. .` .>(((>

    `... `. .` .>(((>

    .` .>(((>

    LMAOSHMSFOAIDMT

  6. #45
    Join Date
    Mar 2007
    Posts
    3,108
    Motor RLA is 643 at 460VAC, if I remember correctly. That would make it a 512KW or 650HP. The nameplate charge was 1400# of R-123.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  7. #46
    Join Date
    Jan 2005
    Location
    Houston TX
    Posts
    874
    Great pictures, isn't it nice to have room to work and put sections away from the job- GEO
    Once in a while everything falls into place and I am able to move forward, most of the time it just falls all over the place and I can't go anywhere-GEO

  8. #47
    Join Date
    Mar 2007
    Posts
    3,108
    Quote Originally Posted by ga1279 View Post
    Great pictures, isn't it nice to have room to work and put sections away from the job- GEO
    Thanks, and yes. It is very nice. Unfortunately, not all jobs are this clean, well lit, organized, or air-conditioned. The one just before this had none of those things in fact...
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  9. #48
    Join Date
    Jan 2008
    Location
    windy city
    Posts
    4,430
    Quote Originally Posted by Nuclrchiller View Post
    I just want to point out to some of the people viewing this Open Forum that Rob is being kind to share his experiences with us, and his purpose is not to educate, or train, to the point of anyone being qualified to perform this work (at least, I believe so). I especially am concerned with the folks who may be watching, but not participating in the discussion. There, I feel better now. Carry on. Oh, and I agree completely with the comment about making a great instructor.
    yep. Kinda surprised Rob put this in the 'open' section
    \m/
    original member of the racoon brotherhood

  10. #49
    Join Date
    Jan 2011
    Location
    NJ
    Posts
    13
    Wow I would love to do that type of work. The only thing I have done on a chiller was clean the tubes and that was a pain in the ass job.The chiller we had was a 250 ton Trane lithium bromide absorption chiller at the college I used to work for.

  11. #50
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,375
    Quote Originally Posted by heavymetaldad View Post
    yep. Kinda surprised Rob put this in the 'open' section
    Yeah me too, I can only imagine all the DIY following the pictures and tearing chillers apart in a lonely basement near you. the cat is out of the bag and all hope is lost because of Rob.

  12. #51
    Join Date
    Jan 2009
    Location
    Not in Iran
    Posts
    1,083
    I wouldn't say that exactly,. You do know that building owners have brains and responsibility also,. I'm sure that they will know about the contractor and their cabilities befor giving the go ahead . With that being said, also, the person or persons attempting or bidding a teardown Like this would need to have the parts and the part numbers and the correct number to call for them,. U can't just to Walmart and say I need a lamybrith seal,. Journal bearing,. An inner and outer seal,. High and low speed,. 2 new flange gaskets,. For this ___ frame ,. Ect
    Following,.
    Last edited by milkyway; 01-19-2013 at 06:37 PM.

  13. #52
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    2,019
    This reminds me of a story I heard early in my career from one of my mentors. An owner had a motor burnout on a Trane sidewinder (model PCV or CVHA) and decided to replace the motor themselves. They disconnected the electrical, and removed the terminal-side motor housing bolts, and then chained the motor housing to a forklift (or something similar), and then they PULLED. That is, until they heard the sound of something inside "giving way". Yep, they completely skipped disassembling the compressor. I don't recall hearing what it was that broke.

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