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  1. #27
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    24,404
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    Quote Originally Posted by heatingman View Post
    What do you consider yourself? Mr Exhaust fan?


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    Refrigeration and Industrial. These toy fans are easy, try a fan you can stand in the wheel!

  2. #28
    Join Date
    Aug 2009
    Location
    Beatrice, NE
    Posts
    9,627
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    Quote Originally Posted by pecmsg View Post
    Refrigeration and Industrial. These toy fans are easy, try a fan you can stand in the wheel!
    Sounds more like a human hamster wheel.

  3. #29
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    31,473
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    Quote Originally Posted by BNME8EZ View Post
    Sounds more like a human hamster wheel.
    I heard you can buy them online.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

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  4. #30
    Join Date
    Dec 2004
    Location
    Chicago area
    Posts
    8,362
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    Quote Originally Posted by pecmsg View Post
    Refrigeration and Industrial. These toy fans are easy, try a fan you can stand in the wheel!
    Ive done plenty.


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  5. #31
    Join Date
    Feb 2016
    Location
    Louisburg Kansas
    Posts
    3,449
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    The main thing wrong with the exhaust fan in the picture is the variable pitch sheave is adjusted wrong and the driven sheave is wore out.
    No man can be both ignorant and free.
    Thomas Jefferson

  6. #32
    Join Date
    Aug 2019
    Posts
    3
    Post Likes
    Thread Starter
    I want to thank everyone for their input. I spoke the the GM and the POC at the site, and they said they thought it would last longer. I told them that at the end of the day, it’s their equipment and we’ll do what they ask us to, but the manufacturer (Bosch) recommends A belts. I’ll keep tabs on the 75 units they have that use belts to see what happens as they run.

    We’ll also report back the motor amp draw and any enthalpy differences from using a B belt instead. When it gets slow in Florida “winter”, it gets SLOW.......

  7. #33
    Join Date
    Apr 2003
    Location
    Maple Grove, MN
    Posts
    3,148
    Post Likes
    Quote Originally Posted by Amwilson10478 View Post
    We'll also report back the motor amp draw and any enthalpy differences from using a B belt instead.......
    You should adjust the sheaves so that the amps are about the same as before. Definitely check the amp draw and make adjustments as necessary so that the motors don't exceed nameplate FLA.

    You might also have to go up a size on length. I'm sure the first few will be an experiment.

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