[pure-silver] Re: air pump for Devere 108S
- From: Peter De Smidt <pdesmidt@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 12 Jan 2008 19:50:30 -0600
Shannon Stoney wrote:
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
=
Get a low-noise bathroom fan. Connect it with a flexible duct tot he
fan exhaust opening. Use a switch designed for ceiling fans such that
you can control how fast the motor runs. You will have plenty of
airflow. Turn the head on and turn the fan on high. Feel the head
after about 1 minute. Is it only warm to the touch, approximately 100*F.
If so, then turn the fan down a bit and feel again. It can feel warm
but shouldn't be burning hot. Find the lowest setting that keeps the
head temp appropriate. Use a marker and tape to show where to turn the
knob on the speed control such that you get adequate cooling at the
lowest fan speed. There you go.
As I said in an earlier post, I've done this with a De Vere that has a
very similar setup to yours. It works.
On another matter, it's a good idea to keep a universal type fire
extinguisher in your darkroom.
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