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Thread: want to autopsy a compressor

  1. 05-04-2020, 07:18 PM #1
    navyguy1
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    want to autopsy a compressor

    Hi Guys,

    Whats the best way to open up a hermetic compressor? Grinder or ?
    Real curious as to how or why this scroll compressor took a crap.


    Thanks
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  3. 05-04-2020, 07:32 PM #2
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    pecmsg
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    Quote Originally Posted by navyguy1 View Post
    Hi Guys,

    Whats the best way to open up a hermetic compressor? Grinder or ?
    Real curious as to how or why this scroll compressor took a crap.


    Thanks
    Best way it to send it back and let them do it. They’ll have the specs needed!

    Copeland will autopsy when requested for a price.
    Last edited by pecmsg; 05-04-2020 at 07:53 PM.
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  4. 05-04-2020, 07:45 PM #3
    Spide
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    We usually used angle grinders.

    Always educational to cut them open!
    "Compressors never die; they're always murdered!" - Glenn Hannegan Jr
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  6. 05-04-2020, 08:00 PM #4
    navyguy1
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    Quote Originally Posted by pecmsg View Post
    Best way it to send it back and let them do it. They’ll have the specs needed!

    Copeland will autopsy when requested for a price.
    Well I’m curious but not that curious. The cost for shipping alone wouldn’t justify it.
    Thanks though.
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  7. 05-04-2020, 08:08 PM #5
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    Quote Originally Posted by navyguy1 View Post
    Well I’m curious but not that curious. The cost for shipping alone wouldn’t justify it.
    Thanks though.
    1st dump the oil and measure. Look for acid and moisture.

    2nd Cut it open. Sawzall or grinder and a ton of filings inside.
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  8. 05-04-2020, 08:42 PM #6
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    Ive used a grinder before...it's a bit of work but cool to see inside of them

    Sent from my SM-G960U using Tapatalk
    "I think Quantum tunneling would work great... "

    "Call a technician for God's sake. Or we'll see you on the news or the Dark Side of the Moon."
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  9. 05-04-2020, 09:44 PM #7
    Saturatedpsi
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    Quote Originally Posted by navyguy1 View Post
    Hi Guys,


    Real curious as to how or why this scroll compressor took a crap.


    Thanks
    What kind of crap did it take? ..electrical or mechanical. Assuming you replaced it, find anything wrong with the system operation afterward?
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  11. 05-05-2020, 12:27 AM #8
    navyguy1
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    Quote Originally Posted by Saturatedpsi View Post
    What kind of crap did it take? ..electrical or mechanical. Assuming you replaced it, find anything wrong with the system operation afterward?
    Mechanical crap. Compressor running but with both suction and discharge pressures the same.
    Any idea how a scroll can lose its ability to pump?
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  12. 05-05-2020, 12:27 AM #9
    navyguy1
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    Replaced compressor and ac is working just fine now
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  13. 05-05-2020, 06:56 AM #10
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    Quote Originally Posted by navyguy1 View Post
    Mechanical crap. Compressor running but with both suction and discharge pressures the same.
    Any idea how a scroll can lose its ability to pump?
    The scroll popped up during relief and never reset.
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  14. 05-05-2020, 09:03 AM #11
    Saturatedpsi
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    Quote Originally Posted by navyguy1 View Post
    Mechanical crap. Compressor running but with both suction and discharge pressures the same.
    Any idea how a scroll can lose its ability to pump?
    Quote Originally Posted by pecmsg View Post
    The scroll popped up during relief and never reset.
    That's as good a guess as any...there's also a "floating seal" that might not have been sealing.

    I've been studying 'em for years, seen all sorts of mechanical failure modes and still don't fully understand how they work or fail. You can click on the YT video link which will lead you to a bunch of autopsies and save you the trouble...

    https://www.youtube.com/watch?v=hapg3FbD9Es
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  15. 05-21-2020, 12:10 PM #12
    Hurst11
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    A portable band saw works well and the gullet of the teeth on the band does a good job of dragging the shavings out. Doesn’t get em all but does better than sawzall.
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  16. 05-21-2020, 12:19 PM #13
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    Have your helper hold the shop vac hose next to the blade as you cut.

    Quote Originally Posted by Hurst11 View Post
    A portable band saw works well and the gullet of the teeth on the band does a good job of dragging the shavings out. Doesn’t get em all but does better than sawzall.
    PHM
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  17. 05-21-2020, 04:23 PM #14
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    Quote Originally Posted by navyguy1 View Post
    Mechanical crap. Compressor running but with both suction and discharge pressures the same.
    Any idea how a scroll can lose its ability to pump?
    there are youtube videos, that show a few.. the cam fails at the top...sometimes sheared off

    this is a running open one... https://youtu.be/9dCh3L3Y-iY
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  18. 05-21-2020, 04:32 PM #15
    TechmanTerry
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    The Scroll itself could of snapped/busted.
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  19. 05-21-2020, 04:42 PM #16
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    this is a hermetic ...with valve damage..
    https://youtu.be/2j4SGkGs3vw
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  20. 05-21-2020, 04:46 PM #17
    TechmanTerry
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    Quote Originally Posted by Unlimited1 View Post
    this is a hermetic ...with valve damage..
    https://youtu.be/2j4SGkGs3vw
    Post #1 says Scroll. And it is also a Hermetic.
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  21. 05-22-2020, 09:49 AM #18
    theoldscroll
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    Quote Originally Posted by Hurst11 View Post
    A portable band saw works well and the gullet of the teeth on the band does a good job of dragging the shavings out. Doesn’t get em all but does better than sawzall.
    Did a recip one time yrs ago with a sawzall, it took about $30 worth of blades by the time i was done.
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