Page 1 of 2 12 LastLast
Results 1 to 13 of 16
  1. #1
    Join Date
    Oct 2010
    Posts
    28

    thrust bearing failure on a trane ctv

    GUYS I NEED SOME INPUTS ON THRUST BEARING FAILURE ON A TRANE CTV HAVE ANYBODY HAD ISSUE WHEN THE chiller motor experiences A SHAFT VOLTAGE ISSUE ON NON VFD CHILLER.

  2. #2
    Join Date
    Dec 2003
    Location
    45th Parallel
    Posts
    954
    Do you have the bearings out and have you visually inspected the races?
    If not, why do you think you have a fluting problem?
    If it is just a noisy bearing it could be from a spall or copper plating,
    Typically do not see fluting with non vfd motors, not to say it couldn't happen, but have never personally seen it, or heard of it.
    “If your work speaks for itself, don't interrupt.” ~Henry J. Kaiser

  3. #3
    Join Date
    Oct 2010
    Posts
    28
    Quote Originally Posted by drivewizard View Post
    Do you have the bearings out and have you visually inspected the races?
    If not, why do you think you have a fluting problem?
    If it is just a noisy bearing it could be from a spall or copper plating,
    Typically do not see fluting with non vfd motors, not to say it couldn't happen, but have never personally seen it, or heard of it.

    well Iam picking up amps readings on the oil return line of the thrust bearing,there are two chillers that are doing the same thing and both bearings are very noisy and the other two chillers don't have any type of amp readings on the oil return line and the bearings are running normal.

  4. #4
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,258
    Quote Originally Posted by gbrlgms View Post
    well Iam picking up amps readings on the oil return line of the thrust bearing,there are two chillers that are doing the same thing and both bearings are very noisy and the other two chillers don't have any type of amp readings on the oil return line and the bearings are running normal.
    amp readings on the oil return line are common to all of the ctv's. you will also find an amp reading on the oil sump vent line, motor cooling lines (in and out) and the eductor lines.

    there is NO connection between noisy bearings and amp draws on any line.

    you have noisy bearings because they are noisy. they are most likely needing to be replaced. a proper vibration analysis will indicate it for sure, however, usually by the time you can hear it, it is too late.
    my 1st time jumping out of a plane...http://youtu.be/Kv38G0MHsGo

  5. #5
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,011
    Quote Originally Posted by gbrlgms View Post
    well Iam picking up amps readings on the oil return line of the thrust bearing,there are two chillers that are doing the same thing and both bearings are very noisy and the other two chillers don't have any type of amp readings on the oil return line and the bearings are running normal.
    Here we go again with "amp readings on the oil lines" theory
    Let the fun Begin ???????????
    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 .

  6. #6
    Join Date
    Sep 2004
    Posts
    175
    As JayGuy said collect vibration data to see whats going on.

  7. #7
    Join Date
    Oct 2010
    Posts
    28
    Quote Originally Posted by jayguy View Post
    amp readings on the oil return line are common to all of the ctv's. you will also find an amp reading on the oil sump vent line, motor cooling lines (in and out) and the eductor lines.

    there is NO connection between noisy bearings and amp draws on any line.

    you have noisy bearings because they are noisy. they are most likely needing to be replaced. a proper vibration analysis will indicate it for sure, however, usually by the time you can hear it, it is too late.
    I KNOW THE BEARINGS NEEDS TO BE REPLACE,BUT WHAT IAM SAYING IS THAT THE ELECTRIC CURRENT IS FLOWING THRU THE BEARINGS AND CAUSING THEM TO FAIL CREATING COPPER PLATTING,TRANE HAVE COME UP WITH PLASTIC BEARINGS AND A BRUSH KIT TO GROUND THE BEARINGS.

  8. #8
    Join Date
    Nov 2008
    Posts
    361
    Quote Originally Posted by gbrlgms View Post
    I KNOW THE BEARINGS NEEDS TO BE REPLACE,BUT WHAT IAM SAYING IS THAT THE ELECTRIC CURRENT IS FLOWING THRU THE BEARINGS AND CAUSING THEM TO FAIL CREATING COPPER PLATTING,TRANE HAVE COME UP WITH PLASTIC BEARINGS AND A BRUSH KIT TO GROUND THE BEARINGS.
    The bearing are not plastic the cage is.

    The brush kit goes on machines with drives.

    Of a certain vintage the peek cage brg. will be the only brg avaliable but it is for oil flow not what you are reffering to, depends on whether you have a center feed brg. bracket or not.

    The brgs. used for drives were ceramic. They are not being used anymore either as they have gone to chokes on the drive load lines.

    If you want to put on a brush kit I don't see where it will hurt but I have never heard of it for a non drive application. You may or may not be able to get a ceramic brg. for your machine but they are around 3 to 4 times the money.

    Using the proper installation method for the brgs. will go farther in solving your proble than anything else. Along with not letting the machine surge.

  9. #9
    Join Date
    Mar 2007
    Posts
    3,103
    Quote Originally Posted by gbrlgms View Post
    I KNOW THE BEARINGS NEEDS TO BE REPLACE,BUT WHAT IAM SAYING IS THAT THE ELECTRIC CURRENT IS FLOWING THRU THE BEARINGS AND CAUSING THEM TO FAIL CREATING COPPER PLATTING,TRANE HAVE COME UP WITH PLASTIC BEARINGS AND A BRUSH KIT TO GROUND THE BEARINGS.
    I don't think copper plating in a bearing is caused by electrical current.
    "There is no greater inequality than the equal treatment of unequals."

    -Thomas Jefferson

  10. #10
    Join Date
    Oct 2009
    Location
    USA
    Posts
    48
    Copper plating is usually caused when the machine has leaks over a period of time and this issue is not addressed in a timely manner.

  11. #11
    Join Date
    Oct 2010
    Posts
    28
    Quote Originally Posted by Trane_Dude View Post
    Copper plating is usually caused when the machine has leaks over a period of time and this issue is not addressed in a timely manner.
    What Causes Copper Plating Anode Passivation?

    An anode is a metallic node through which electric current passes and eventually meets with a cathode. Oxidation occurs at an anode. For a copper anode, this means that electrons leave the copper atoms and eventually join with other atoms at the cathode. Passivation is a process by which materials become inert, or inactive; in this case the copper anodes lose their oxidation potential, stopping the flow of electrons



    Read more: What Causes Copper Plating Anode Passivation? | eHow.com http://www.ehow.com/list_7181604_cau...#ixzz1T2d61fDI

  12. #12
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,258
    Quote Originally Posted by gbrlgms View Post
    What Causes Copper Plating Anode Passivation?

    An anode is a metallic node through which electric current passes and eventually meets with a cathode. Oxidation occurs at an anode. For a copper anode, this means that electrons leave the copper atoms and eventually join with other atoms at the cathode. Passivation is a process by which materials become inert, or inactive; in this case the copper anodes lose their oxidation potential, stopping the flow of electrons



    Read more: What Causes Copper Plating Anode Passivation? | eHow.com http://www.ehow.com/list_7181604_cau...#ixzz1T2d61fDI

    that's great. nice explanation.

    here's another thing that can happen. smoking causes lung cancer.

    however, neither your description of 'copper plating anode passivation' nor my description of 'smoking causes lung cancer' is happening inside your chiller. does copper plating happen? yes. but not due to electrical plating.

    if you want to spend a lot of time and money on something, by all means go ahead. i love it when people waste money on things that do not work because it means that i do not have to get us out of this poor economic situation by myself.

    either way, you are going to be changing your bearings and the brush grounds the shaft, not the bearings.
    my 1st time jumping out of a plane...http://youtu.be/Kv38G0MHsGo

  13. #13
    Join Date
    Oct 2009
    Location
    USA
    Posts
    48
    If the machine is clean and tight it wont plate. I know this explanation lacks all that technical stuff, but its reality.

Page 1 of 2 12 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