Air Filter Replacement; Equipment Vacuuming - Nortel Passport 15000 Hardware Installation And Maintenance

64 Chapter 2 Safety considerations and best practices
Air filter replacement

Equipment vacuuming

241-1501-240 5.2S2
The rate of airflow with a Passport 15000 or 20000 switch is different than
other products because of the higher volume and faster speed of blown air to
cool the equipment. The air filter of a Passport 15000 or 20000 must be
replaced every 3 months or more often. A filter in an upper or lower shelf in
a NEBS 2000 frame has the same interval of replacement.
A clogged air filter may cause alarm 7002 0003. It means you need to increase
the replacement interval. After initial powering up of the system, and before
getting the alarm, it is recommended you periodically check the air filters to
determine if you need a more frequent replacement.
Never re-use an air filter because its effectiveness is reduced regardless of the
method of cleaning it.
Vacuuming around the Passport 15000 or 20000 can maximize the efficiency
of the air filters, but does not increase the interval of change. Refer to
"Equipment vacuuming" (page 64).
Use the procedure "Replacing an air filter" (page 800) as a part of regular
Passport maintenance. The procedure includes a one-page form that is
intended to be printed and kept with the switch so that each air filter
replacement can be recorded. Each form accommodates three switches for a
period of one year.
CAUTION
Risk of warranty loss
Processor cards that are damaged due to the accumulation
of dust are not covered by a Nortel Networks warranty.
When claiming equipment warranty service, you may be
asked to produce a copy of the form.
Vacuum your equipment periodically to reduce the frequency of replacing the
air filter of a Passport 15000 or 20000. You must determine your own period
of vacuuming equipment based on the environmental conditions surrounding
your equipment.