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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: 290380" data-attributes="member: 20838"><p>My first thought is why is the fan running the wrong way in the first place. If you reverse the direction of most fans so they're running the opposite way they were intended to then they often become innefficient because of the profile and aerodynamics of the bladeset. This causes high noise levels and can also cause a higher shaft power requirement and motor overload...not to mention lower air volumes and less static pressure abilities.</p><p></p><p>If the fan is running the way it was manufactured to do so but the wrong way to your liking then physically removing it and reinstalling it in the opposite orientation might be a better option. If it's running the wrong way because someone originally wired it wrong then changing it electrically is the best way to go.</p></blockquote><p></p>
[QUOTE="Marvo, post: 290380, member: 20838"] My first thought is why is the fan running the wrong way in the first place. If you reverse the direction of most fans so they're running the opposite way they were intended to then they often become innefficient because of the profile and aerodynamics of the bladeset. This causes high noise levels and can also cause a higher shaft power requirement and motor overload...not to mention lower air volumes and less static pressure abilities. If the fan is running the way it was manufactured to do so but the wrong way to your liking then physically removing it and reinstalling it in the opposite orientation might be a better option. If it's running the wrong way because someone originally wired it wrong then changing it electrically is the best way to go. [/QUOTE]
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Reversing A Single Phase Fan
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