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  1. #1
    Join Date
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    Default Noisy extractor motor

    I moved my extractor into the honey facility and today after anchoring it down I started it up. It is very noisy. A loud electric motor hum.
    How do I quieten it down?
    Ian Steppler >> Canadian Beekeeper's Blog
    www.stepplerfarms.com

  2. #2
    Join Date
    Feb 2010
    Location
    Sudbury, Ontario
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    148

    Default Re: Noisy extractor motor

    Quote Originally Posted by Ian View Post
    I moved my extractor into the honey facility and today after anchoring it down I started it up. It is very noisy. A loud electric motor hum.
    How do I quieten it down?
    Slather the bearings in honey.
    Beekeeping since 2009; currently running 20+ hives.

  3. #3
    Join Date
    Jan 2007
    Location
    Bonn, Germany
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    122

    Default Re: Noisy extractor motor

    Quote Originally Posted by Ian View Post
    I moved my extractor ... A loud electric motor hum.
    Check the connection of phases.

  4. #4
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    Default Re: Noisy extractor motor

    what does that mean?
    Ian Steppler >> Canadian Beekeeper's Blog
    www.stepplerfarms.com

  5. #5
    Join Date
    Nov 2011
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    Rader, Greene County, Tennessee, USA
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    Default Re: Noisy extractor motor

    Ian, "phases" is a reference to 3 phase electrical power. Essentially, sjj is suggesting that you may not have hooked the wires to the extractor back up the same way after the move.


    In USA and Canada, the AC distribution network is based on 3 phase AC which is likely to have 3 'hot' wires, plus maybe a neutral. Typically, small users such as residences do not get 3 phase power and only have 2 'hot' wires plus neutral. 3 phase is a more efficient way of powering large motors, and is preferred for industrial uses, but 3 phase power may not be available at every power pole. In my case, 3 phase distribution stops about 1 mile from my property.

    In locations without 3 phase, equipment with motors designed for 3 phase can still be utilized IF you were to install a phase converter to feed the motor.
    Graham
    USDA Zone 7A Elevation 1400 ft

  6. #6
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    Default Re: Noisy extractor motor

    The motors are not running on 3 phase power.
    I think the difference is that the extractor is running in a large echoey room as compared to before. I need to somehow eliminate that hum which is vibrating through the machine.

    Does powering the motors on 220v help?

  7. #7
    Join Date
    Feb 2011
    Location
    Belpre,Ohio, USA
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    1,295

    Default Re: Noisy extractor motor

    Ian, assuming you are running 3 phase your motor may be running backwards, you will need to check the direction of motor rotation. If indeed your motor is turning the wrong direction all you need do in take just 2 of the 3 hot wires that Graham spoke of and reverse them. In other words disconnect 2 of the wires and switch them, this will change motor rotation to the other direction. It is very possible that this is the source of your noise.

    Edit: oops I was typing while you were posting.
    Bill...in Southeast Ohio

  8. #8
    Join Date
    Apr 2005
    Location
    Salem, Oregon
    Posts
    948

    Default Re: Noisy extractor motor

    Three phase NEVER has a neutral unless you are just running one leg such as 208.
    Three phase is power 120 degrees offset potential.
    Single phase 220 is 180 degrees.

    Ian, if you have the option to run 220, (I don't know if you do) the motor will run cooler and quieter.
    I have exactly ONE hive more than you.
    That makes my opinion beyond question.

  9. #9
    Join Date
    Jan 2014
    Location
    Brazoria County, Texas
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    89

    Default Re: Noisy extractor motor

    Make sure your connection to the source of power is tight and secure and making good contact.
    Is the new footprint of the extractor on solid flooring ?
    Also need to be level and plumb if the motor is mounted horizontal.
    You may have damaged the bearings and thrust bearings while moving.
    Check all the mounting bolts also.
    If none of that works to quieten it, try removing the motor and running it on the bench. It it is noisy running on the bench the bearings may need replacing at a motor shop or install new.

  10. #10
    Join Date
    Aug 2012
    Location
    Barrie, Ontario, Canada
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    457

    Default Re: Noisy extractor motor

    Maybe it's a resonance issue? A different coupling might help isolate the motor vibration from the extractor. Lovejoy for example. Rubber or urethane between the motor and it's mounting surface might help too.
    Adam - Zone 5A
    www.adamshoney.com

  11. #11
    Join Date
    Nov 2011
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    Rader, Greene County, Tennessee, USA
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    Default Re: Noisy extractor motor

    I think zhiv9 may be on the right track. It could be that the extractor is torqed/stressed slightly differently than it was due to the move if the mounting surface has some irregularity (or is flat but the previous surface was irregular).


    > Three phase NEVER has a neutral unless you are just running one leg such as 208.

    If the machine has non-motor loads as well as the 3 phase motor, there may be a neutral to allow those non-motor loads to utilize single phase power. For instance, a press with a 3 phase motor may also have an ordinary light bulb to allow for inspection of the work, so the cable from the wall to the press would have 3 'hot' wires plus neutral, plus possibly a separate ground.


    Graham
    USDA Zone 7A Elevation 1400 ft

  12. #12
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    Default Re: Noisy extractor motor

    Thanks guys, your feedback is all very useful. Ill let you know how I make out. Im also going to be talking to my electrician.
    Ian Steppler >> Canadian Beekeeper's Blog
    www.stepplerfarms.com

  13. #13
    Join Date
    Dec 2008
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    Menomonee Falls, Wis.
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    Default Re: Noisy extractor motor

    I must support Rader, the "Y" three phase I worked with had a neutral that was used to power control circuits, but it was Nazi power.

    I also support the divide and conquer, slip the belt off and listen.


    crazy Roland

  14. #14
    Join Date
    Jan 2007
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    Bonn, Germany
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    122

    Default Re: Noisy extractor motor

    Quote Originally Posted by Ian View Post
    The motors are not running on 3 phase power.
    I think the difference is ....
    Is it a capacitor induction motor ? Electrolytes in these capacitors change over the time and they lose their ability to shift the phase.

  15. #15
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    Default Re: Noisy extractor motor

    Would a capacitor change do anything to quieten down the motor ?

    I talked to my electrician and we removed the motors and he figured the motors are as quiet as I can expect. It's the vibration they are sending through my machine. It's acting kinda like an amplifier. In looking into rubber mounts.

  16. #16
    Join Date
    Jan 2014
    Location
    Brazoria County, Texas
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    89

    Default Re: Noisy extractor motor

    If the device was quieter before the move than something has changed dealing with the move. I suspect level and plumb of the machine or something has shifted. Loose bolting or mountings ?
    Good luck to you and hope it is solved quickly!!!

  17. #17
    Join Date
    Jan 2007
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    Bonn, Germany
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    122

    Default Re: Noisy extractor motor

    Quote Originally Posted by Ian View Post
    Would a capacitor change do anything to quieten down the motor ? ....
    Motorcapacitors change their capacitance with time.
    The wrong value of capacitance results in torque pulsations at full speed.

    If a wrong capacitance value is installed, it will cause an uneven magnetic field which causes the rotor to hesistate at those spots that are uneven,
    which can be observed as uneven motor rotation speed, especially under load.

    This hesitation can cause the motor to become noisy,
    increase energy consumption, cause performance to drop, and cause the motor to overheat.[3]

    http://en.wikipedia.org/wiki/Motor_capacitor

    It is wise to have a spare motorcapacitor handy in case you need to change one very quickly in usually unexpected circumstances.

    Johann

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