[pure-silver] Re: air pump for Devere 108S
- From: Shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 12 Jan 2008 18:07:55 -0600
This lead me to think that your blower is a little bit on the overkill
side and that the air that goes in has no way to go out... So "it
bounces back" and impose a stress on the motor making it vibrate more
than planned and make noise.
My little knowledge on cooling thing is that you can make it without
noise (well quite), provided that the air coming in goes out as freely
as possible.
If you get fans with blades designed to be quiet, you will like it and
spend more time in the darkroom.
Here is my suggestion :
1) measure the opening of the vent on the head where the previous fan
goes in.
2) look at the opposite side of the head and ask yourself if there is
an opening of an equal surface to let the air out. If yes, my first
hypothesis is wrong. If not you've to make one.
OK, I'll do that when I get back to my darkroom in a couple of weeks.
There are two vents for the air to come in, with little filters in
them.
Once I learned to seal up the door for the negatives correctly, and
fixed the modifications to said door that the previous owner had made,
the vibration problem sort of went away.
Interesting that there might be a quieter, higher-tech, third party fan
that might work. I wonder how to find out how much air volume per
minute or whatever is needed? Maybe Devere can tell me?
--shannon
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