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Do-It-Yourself (DIY) Question & Answer Forum
Reversing A Single Phase Fan
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<blockquote data-quote="Marvo" data-source="post: 290382" data-attributes="member: 20838"><p>Yes, not all fans overload, backward curved /radials tend not to but axials especially tend to be unpredictable in reverse. Some fans are designed with a bi-directional bladeset but because of the efficiency sacrifices involved these are usually for a specific purpose and not general use. Fan manufacturers almost never give operational curve info for absorbed power in reverse rotation direction so I'd exercise caution unless the results are being closely monitored.</p></blockquote><p></p>
[QUOTE="Marvo, post: 290382, member: 20838"] Yes, not all fans overload, backward curved /radials tend not to but axials especially tend to be unpredictable in reverse. Some fans are designed with a bi-directional bladeset but because of the efficiency sacrifices involved these are usually for a specific purpose and not general use. Fan manufacturers almost never give operational curve info for absorbed power in reverse rotation direction so I'd exercise caution unless the results are being closely monitored. [/QUOTE]
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Reversing A Single Phase Fan
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