Having Kemper here and discovered the charcoal filter is actually on timer
(not so much on saturation detection, which would be rather expensive) .
Than the siren tells you chuck the us$+/-500 filter out .
Having the outlet back to room is not recommended because of the heat and
some odor still prevails ;
and letting the air out you do not have to be so tight = any car exhaust
will be much worst .
So you can save money being sensible about the charcoal , = reset the timer
.
Different story on HEPA ; make absolutely sure of prefilter seal ; otherwise
this as expensive item fills in a week through the direct leak .
The prefilter change time is when the drag reaches the red line ; if that
does not move ; HEPA goes as well ;
if that does not move it, carbon is full too .
The seals (foam tape mostly) seem almost on purpose (better sales)
underdesigned (as you slide in the HEPA; you drag and disturb the foam tape
; back especially ; it's an ergonomical challenge to seat all the filters
right) .
Same experienced with Pace ; and likely all the rest of them .

Paul Klasek
ResMed

-----Original Message-----
From: Kenny Bloomquist [mailto:[log in to unmask]]
Sent: Tuesday, 31 August 1999 1:49
To: [log in to unmask]
Subject: Re: [TN] Solder Station Fume Extractors


We've been evaluating fume extractors and have found Airflow Systems to
have a good line. They recommend a pre-filter, 99.97% DOP HEPA filter and
2" charcoal final filter for solder, flux and alcohol fumes. We have been
trying a loaner from them and have found it to be very effective.


Ken Bloomquist
Sr. Principal Process Engineer
PRIMEX Aerospace Company
P.O. Box 97009
Redmond, WA 98073-9709
http://www.primextech.com

Ph:   425-885-5000
FAX: 425-882-5786
[log in to unmask]

Northcon/2000, Board Member
http://www.northcon.org

Electronics Manufacturers Association (EMA), Vice President
http://www.ema-wa.org

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