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  1. #14
    Join Date
    May 2013
    Location
    Baton Rouge, La
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    42
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    Source 1...
    I think Germany?

  2. #15
    Join Date
    May 2013
    Location
    Baton Rouge, La
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    42
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    must not have caught the idea Mr. Ga hvac tech
    re-read what you highlighted.
    can you spell sarkastick?

  3. #16
    Join Date
    Sep 2005
    Location
    Atlanta GA area
    Posts
    31,467
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    Quote Originally Posted by 02JeepKing View Post
    must not have caught the idea Mr. Ga hvac tech
    re-read what you highlighted.
    can you spell sarkastick?
    Spelling is not my forte.. My posts would be horrible if computers did not clean things up for me.

    Agree with the thought...
    GA-HVAC-Tech

    Quality work at a fair price with excellent customer service!

    Romans Ch's 5-6-7-8

    2 Chronicles 7:14

  4. #17
    Join Date
    May 2013
    Location
    Baton Rouge, La
    Posts
    42
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    back on topic i do believe the bearing theory was correct.
    i dug the motor out the scrap bin today and the shaft did have a small bit of play paralell.
    i know the shaft normally moves up and down slightly but this one had an odd movement left and right. although slight possibly this was the culprit.
    too bad they cant make motors as well as they cook huh Mr. Eugene?

  5. #18
    Join Date
    May 2009
    Location
    Earth
    Posts
    2,619
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    Yeah, it is usually bearing failure, cap failure usually will not lock it up.

  6. #19
    Join Date
    Nov 2008
    Location
    Spring Green, WI
    Posts
    69
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    was it one of those multi horse motors? I find those only last about a year because getting the right amp draw from the right speed and capacitor combination can be difficult.

    Sent from my XT901 using Tapatalk 4

  7. #20
    Join Date
    Oct 2004
    Location
    Central WA
    Posts
    1,833
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    An old thread resurrected, but nobody ever actually answered your question.

    When a motor starts the magnetic field induced in the stator tries to pull the rotor to one side, but it can't so it turns, then as the current reverses the rotor continues on chasing its tail. When you get enough lateral play in the bearings (side to side) that rotor is actually pulled into the stator when energized and you end up with a very expensive drum brake. If you were able to manually get that motor spinning fast enough and then energized it the magnetic field would likely hold it centered and it would run.

    What causes the bearing failure? Sometimes it could be a fan out of balance, but often anymore it seems to be shotty construction and cheap materials. How often have we all seen a shaft-down motor that is nothing but an oil slick between the motor and the fan blade, and often less than a year old?

  8. #21
    Join Date
    Jun 2013
    Location
    NORTHERN
    Posts
    1,122
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    Quote Originally Posted by cjpwalker View Post
    An old thread resurrected, but ...
    Politely: and I respect cjp !

    but thanks Eugenewith this quoted #7:
    What is the cause of bad bearings? Purely mechanical failure, maybe the fan was not balanced?

    and in post #4
    Process cooling: NO COMPRESSORS Earth-Coupled since 1996
    ... however, much still needs to be hybridized energy transfer.

    CLOSED LOOP 2015 listed EER's
    even 49+ now; and "blended from low to high variable speeds" for 32deg.F ~ E-Star

    Perhaps you need a 32F Chiller/HW-Heat: buy a GEO-T Heat Pump (GHP with Heat-Recovery)
    http://www.energystar.gov/index.cfm?...mal_heat_pumps

    http://www.hydro-temp.com/products.html and Bosch/Carrier and AquasystemsInc.com

  9. #22
    Join Date
    Oct 2004
    Location
    Central WA
    Posts
    1,833
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    You're right GT - I skimmed over the thread too fast...

  10. #23
    Join Date
    Feb 2010
    Location
    Gridley, California, United States
    Posts
    20
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    Good advise why over think it.

  11. #24
    Join Date
    Aug 2012
    Location
    Iraq
    Posts
    1,310
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    Quote Originally Posted by EugeneTheJeep View Post
    Bad bearings, magnetic field locks it up when power is applied by pulling it into the windings.
    can u explain sir
    here i encountered same problem with bush sleeve motor not ball bearing

  12. #25
    Join Date
    Feb 2014
    Location
    northern ny/ saint lawrence valley
    Posts
    2
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    enviorment

    Quote Originally Posted by kefah View Post
    can u explain sir
    here i encountered same problem with bush sleeve motor not ball bearing
    dirt or abrasives in the enviorment can lead to early failure of bearings. given your location fine sand and dust could be your problem

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