Re: Smog Pump

["William Vannerson" <William_Vannerson at ama-assn_org>]

Norm has had such a unit running in his fishroom for years.  It's not quiet, but it's not annoyingly loud either.  I have a photo that I took that I'll try to post to the ChiKA web site in a few days.

The one shown on the linked page has a few interesting features.  One, the fan mounted on the motor shaft to help cool the motor is a novel concept.  If the the unit is in the fish room, it could help circulate the air in the room.  Two, the air intake is piped in from another room to reduce condensation.  I did notice that line has a 90 degree elbow.  The air will "pile up" and compress at this point, increasing the noise.  You want smooth turns to reduce this effect.  I also know folks who have added mufflers after the pump, a glass jar with filter material will reduce the noise and provide mechanical filtration for dust and other airborn matter, especially carbon from the wearing vanes. (see http://www.thekrib.com/Filters/air-pumps.html for a better explanation)

Bill Vannerson
McHenry, IL
http://vannerson.home.att.net/


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