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Weil McLain damper sound - PLEASE HELP

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Vijayssj5
Vijayssj5 Member Posts: 1
edited February 2022 in Strictly Steam
My Weil McLain damper wasn’t working properly. Had it replaced but now keeps making a buzzing sound when in the off position. Once the heat turns on, the damper rotates and the sound is gone. Once heat is off, damper rotates to off position and buzzing sound returns. 
Can any one help. The person who replaced the damper isn’t sure the cause of sound

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  • Jamie Hall
    Jamie Hall Member Posts: 23,313
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    Probably the damper is misadjusted and not making the end switch to turn off the motor when it tries to close. Won't last long that way. And the person who installed it should have checked that.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England

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