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  1. #1
    Join Date
    Nov 2011
    Posts
    16

    Compressor overheating and shut down???

    system had a leak fixed the leak and charged unit up. At first the compressor turn on and off, Then i opened the main disconnect and restarted it, Compressor turned on and was making a funny noise then stop making the noise, ran for a couple of minutes and then shut off, At the touch of the compressor it was hot. now compressor will not run?????



    History on the unit: hasnet ran in couple of months its a cold room 404A, I barrowed the compressor overload when the unit was unoccupied, to replace a cold room that burnt out its overload, order a new and then installed it back to the compressor wired it the same as the others, charged the system up 22lb of 404A liqiud, and started the unit and now compressor isnt running ????

  2. #2
    Join Date
    Aug 2011
    Location
    North West FL
    Posts
    97
    We are going to need alot more info than that.
    www.mcleanair.com

    "It was working until it quit."

  3. #3
    Join Date
    Oct 2011
    Location
    Chicagoland Area
    Posts
    4,578
    Soiunds like its broken
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  4. #4
    Join Date
    Nov 2011
    Posts
    16
    Quote Originally Posted by McLean Air View Post
    We are going to need alot more info than that.
    what kinda of info ?

  5. #5
    Join Date
    Nov 2011
    Posts
    16
    Had voltage going to the compressor and ohm out the compressor windings seem good.... even when compressor is off the block warms up...

  6. #6
    Join Date
    Aug 2011
    Location
    North West FL
    Posts
    97
    3 phase? Amps? Semi herm? What do your pressures look like when it does run? Why did the old overload fail? What kind of overload? Did you pull a good vac? Did you weigh in a charge? Why 22 pounds of 404? Receiver?
    www.mcleanair.com

    "It was working until it quit."

  7. #7
    Join Date
    May 2004
    Location
    Salt Lake City/Tooele
    Posts
    2,465
    Part winding start?

  8. #8
    Join Date
    Apr 2012
    Location
    Jackson, MS
    Posts
    33
    I would Chk my voltage, everything you said leads me in that direction. It could be under, over or you've lost a leg and single phasing. A blown fuse or bad breaker will do this every time. Good luck.

  9. #9
    Join Date
    Jul 2010
    Location
    Denver, CO
    Posts
    435
    Quote Originally Posted by smjrusche View Post
    I would Chk my voltage, everything you said leads me in that direction. It could be under, over or you've lost a leg and single phasing. A blown fuse or bad breaker will do this every time. Good luck.
    It sounds like a power problem to me as well. Other things could be a large voltage drop on the contactor or disconnect, loose connection, short to ground, or you didn't wire the new overload correctly (I would recommend wiring it as the manufacturer specifies, not how the other ones are).
    The fact that you can not get it to run now period is a reason for concern. I would recommend being very confident in all your electrical before you attempt to start it again.

  10. #10
    Join Date
    Jan 2012
    Location
    WEST COLUMBIA S.C.
    Posts
    278
    Did u check capacitor

  11. #11
    Join Date
    Nov 2011
    Posts
    16
    Wired to specs, Contactor chatters a little but its pulled in, got voltage out of the contactor and into the overload and the compressror windings, Compressor trys to start and heats up...

  12. #12
    Join Date
    Nov 2011
    Posts
    16
    Compressor has been down for a couple of 4 months,

  13. #13
    Join Date
    Nov 2004
    Location
    up in the hizzy
    Posts
    1,376
    My guess would be, you liquid charged it too fast washing away the oil and bearings seized up, the funny noise was the liquid refrigerant slugging the compressor, by the time it stopped all the oil was gone.

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