Adjusting Already Installed Attic Fan


Old 05-12-04, 10:49 AM
Simply Devine
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Adjusting Already Installed Attic Fan

Attic fan belt broke. Replaced the belt, but now one or more fan blades scrape against small motor box which is permanently screwed into frame. Perhaps not locating it, but don't see an obvious place to make adjustment.
Initially tried gently bending the one blade that was scraping. This seemed to provide clearance. But after a minute of running fan, 3 blades were now scraping.
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Old 05-12-04, 07:59 PM
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My wild and crazy guess is you didn't correctly replace the belt.

Don't loosen and 'adjust' the fanblade shaft, you need to loosen the motor mount and slide that around for adjustment.

Never bend the blades, that's a formula for failure.
Old 05-13-04, 11:03 AM
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You sure you got the same belt size?????? Like steve said move the motor over dont bend the fan blades. should be able to like push the belt in a 1/4" in the center of it when on the pulleys.

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