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 Posted: Thu Jul 27th, 2017 03:36 am
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Wilfred Smith
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I am going to build an enclosure for a atic fan. The normal direction for airflow directs the air thur the housing and across the fan motor and pulley. Will the fan move just as much air if  i reverse the motor and move air opposite the design. Meaning i will be moving air from the motor and pulley side first.   

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 Posted: Thu Jul 27th, 2017 11:34 am
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Stan Adams
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No it won't, the air is directed by the venturi, instead of directing the air, it will spread the air. I have done a lot of these over the years, some of them the strut bars bolted on, those are easy, turn the assembly around to the other side & bolt it back on, then remove the blade & install it the other way. If they are welded on, you can cut the bars at the venturi housing & weld it back on the other side, then take the blade off & flip it around. Easiest to do is like the ones on my deck, just let it blow out the pulley side.

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 Posted: Thu Jul 27th, 2017 08:45 pm
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Tom Zapf
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the blade pitch and curve will be thew wrong way if you switch the motor 

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