Page 1 of 6 123456 LastLast
Results 1 to 13 of 72

Hybrid View

  1. #1
    Join Date
    Mar 2007
    Posts
    3,074

    Another Chiller Teardown & Rebuild

    770 ton Trane CVHF, bearing failure and a worn oil seal

    Name:  1.jpg
Views: 1307
Size:  53.6 KB
    Removing the economizer

    Name:  2.jpg
Views: 1231
Size:  39.5 KB
    Economizer sealed up for storage to prevent rust

    Name:  3.jpg
Views: 1195
Size:  46.8 KB
    Rigging of suction elbow

    Name:  4.jpg
Views: 1115
Size:  44.2 KB
    Removing suction elbow

    Name:  5.jpg
Views: 1093
Size:  40.1 KB
    Suction elbow covered to prevent rust

    Name:  6.jpg
Views: 1110
Size:  45.2 KB
    Compressor and evaporator flanges covered to prevent rust and prevent debris from falling in

    Name:  7.jpg
Views: 1070
Size:  54.2 KB
    Preparing to remove suction cover

    Name:  8.jpg
Views: 1088
Size:  48.5 KB
    Removing suction cover

    Name:  9.jpg
Views: 1117
Size:  49.0 KB
    Rigging the suction cover down and a shot of one of the work-tables where all of the tools return when we are done with something

    Name:  10.jpg
Views: 1150
Size:  29.7 KB
    Checking the run-out of the 1st stage impeller
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  2. #2
    Join Date
    Mar 2007
    Posts
    3,074
    Name:  11.jpg
Views: 729
Size:  63.1 KB
    This is where the inter-stage shaft seal mounts on the 1st stage diffuser

    Name:  12.jpg
Views: 731
Size:  42.6 KB
    Looking at the motor journal bearing support with the oil seal, mounting plate, and internal oil line removed

    Name:  13.jpg
Views: 756
Size:  40.6 KB
    Setting up the dial indicator to make sure we do not move the shaft too much when we remove the bearing and bearing support

    Name:  14.jpg
Views: 738
Size:  48.0 KB
    Another shot of the dial indicator setup

    Name:  15.jpg
Views: 826
Size:  40.5 KB
    The failed journal bearing

    Name:  16.jpg
Views: 753
Size:  38.8 KB
    Dowel pins installed to make sure the bearing support goes back exactly where it was before

    Name:  17.jpg
Views: 756
Size:  41.9 KB
    Removal of bearing support - we monitored the shaft at all times with the dial indicator as it could move no more than .003" in any direction

    Name:  18.jpg
Views: 741
Size:  41.2 KB
    Another shot of the removed journal bearing support and the bad back oil seal

    Name:  19.jpg
Views: 796
Size:  34.0 KB
    Inside the motor

    Name:  20.jpg
Views: 771
Size:  53.9 KB
    Last edited by Tech Rob; 10-29-2012 at 10:23 PM.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  3. #3
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Something wrong with the second post, I cant see the pictures, first post is ok.

  4. #4
    Join Date
    Mar 2007
    Posts
    3,074
    Quote Originally Posted by y7turbo View Post
    Something wrong with the second post, I cant see the pictures, first post is ok.
    Fixed. This new site format is glitchy.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  5. #5
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Quote Originally Posted by Tech Rob View Post
    Fixed. This new site format is glitchy.
    Works now, Thanks for sharing.

  6. #6
    Join Date
    Mar 2007
    Posts
    3,074
    Quote Originally Posted by y7turbo View Post
    Works now, Thanks for sharing.
    Thanks for checking it out and commenting!
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  7. #7
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,051
    Very cool. Those of us DX guys dont get to see too many of these...disassembled anyway!

    Any ideas as to the cause of bearing failure? Oil system blunder?

    Thanks for sharing and keep em comin!

  8. #8
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Any idea on what the weights were on the parts you removed?

  9. #9
    Join Date
    Mar 2007
    Posts
    3,074
    Economizer 840#
    Suction elbow 700#
    1st vane assy. 400#
    Suction cover 1700#
    Inter-stage 2000#

    Also a couple of smaller items between 50# and 200#
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  10. #10
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,051
    Hey Rob can you describe the "air run" with the suction elbow off that you mentioned in your other tear down thread? For those of us who dont know.

    Im assuming it is not to check rotation.

  11. #11
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,393
    that is cool! it looks like you know what your doing

  12. #12
    Join Date
    Mar 2007
    Posts
    3,074
    Thanks! My motto is "fake it until you make it"!!!
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  13. #13
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,044
    Quote Originally Posted by Tech Rob View Post
    "fake it until you make it"!!!

Page 1 of 6 123456 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