Brian,
You might want to read GR-78 Section 8 and pay attention to R8-3. GR-63
Airborne contaminants does not deal with air particles large enough to be
captured by a filter.
Richard.
Marko Radojicic <ma...@caspiannetworks.com> on 09/21/2000 10:08:10 AM
Please respond to nebs@world.std.com
Sent by: Marko Radojicic <ma...@caspiannetworks.com>
To: "'nebs @world.std.com'" <nebs@world.std.com>
cc: (Richard Dartez/PA/3Com)
Subject: RE: Air filters
Brian,
As far as I know, there is no standard which *forces* you to have an air
filter and, based upon your product's technology and expected life, you may
not need one.
However if you are designing with forced air cooling, have a long life
expectancy (5+ yrs), and any type of fine pitch devices, you will need to
filter the air in order to maintain reliable operation. If you can pass the
Airborne Contaminants section of GR-63 without an air filter, it would
indicate that you do not need one.
Marko Radojicic
email: ma...@caspiannetworks.com
phone: 408/382-5206
fax: 408/382-5593
-----Original Message-----
From: brian.mcauli...@tellabs.com [mailto:brian.mcauli...@tellabs.com]
Sent: Thursday, September 21, 2000 9:36 AM
To: nebs@world.std.com
Subject: Air filters
Can somebody answer this simple question:
Under what circumstances, if any, are you obliged to have an air filter
in your product ?
What standard and clause(s) specify this requirement ?
Brian McAuliffe
Tellabs
