Another Chiller Teardown & Rebuild
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  1. #1
    Join Date
    Mar 2007
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    Another Chiller Teardown & Rebuild

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

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    Removing the economizer

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    Economizer sealed up for storage to prevent rust

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    Rigging of suction elbow

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    Removing suction elbow

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    Suction elbow covered to prevent rust

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    Compressor and evaporator flanges covered to prevent rust and prevent debris from falling in

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    Preparing to remove suction cover

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    Removing suction cover

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    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

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    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
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    This is where the inter-stage shaft seal mounts on the 1st stage diffuser

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    Looking at the motor journal bearing support with the oil seal, mounting plate, and internal oil line removed

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    Setting up the dial indicator to make sure we do not move the shaft too much when we remove the bearing and bearing support

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    Another shot of the dial indicator setup

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    The failed journal bearing

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    Dowel pins installed to make sure the bearing support goes back exactly where it was before

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    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

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    Another shot of the removed journal bearing support and the bad back oil seal

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    Inside the motor

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    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
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    Something wrong with the second post, I cant see the pictures, first post is ok.

  4. #4
    Join Date
    Mar 2007
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    3,103
    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
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    Anytown USA
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    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
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    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
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    Jul 2006
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    Any idea on what the weights were on the parts you removed?

  8. #8
    Join Date
    Mar 2007
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    3,103
    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

  9. #9
    Join Date
    Jul 2009
    Location
    Columbia, MD
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    3,783
    that is cool! it looks like you know what your doing

  10. #10
    Join Date
    Mar 2007
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    3,103
    Thanks! My motto is "fake it until you make it"!!!
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  11. #11
    Join Date
    Jul 2006
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    Quote Originally Posted by Tech Rob View Post
    "fake it until you make it"!!!

  12. #12
    Join Date
    Oct 2005
    Location
    Phoenix, Arizona
    Posts
    353
    Wow. thanks for sharing the pics. I would love to do a tear down like that. nice job!
    RTFM!!!

  13. #13
    Join Date
    Aug 2009
    Location
    Prattville, Alabama
    Posts
    1,966
    I've never seen that bearing bracket removed while the motor is still mounted to the discharge volute. Do you plan to replace the motor-to-volute o-ring? How about the discharge volute-to-condensor o-ring? Appreciate the pics. Very nice equipment room... once you get past the chilled water lines above the starter.

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