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Author Topic: Flapper on blowers on Model 400  (Read 2006 times)

tinfoilhat2020

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Flapper on blowers on Model 400
« on: December 04, 2015, 05:02:47 AM »

how far are the flappers suppose to open on the blowers???? mine open about 1 inch??? are they suppose to open all the way or no??? This is my first time with a forced draft unit....THANKS
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juddspaintballs

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Re: Flapper on blowers on Model 400
« Reply #1 on: December 04, 2015, 02:10:31 PM »

Mine only swings open about that far.  I highly doubt they're supposed to open all of the way since they don't have a servo on them to open/close them and they close by gravity only.  Think of it more like the flapper on the exhaust of a semi with vertical stacks.  They open as far as they need to to pass the air that the blower can produce through the opening. 
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tinfoilhat2020

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Re: Flapper on blowers on Model 400
« Reply #2 on: December 04, 2015, 04:12:12 PM »

Makes perfect sense....thanks
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