Nortel Passport 15000 Preparation Manual page 34

34 Chapter 2 Planning considerations
241-1501-205 5.2S2
information about vacuuming and the special equipment, refer to "Equipment
vacuuming" in 241-1501-240 Passport 15000, 20000 Hardware Installation,
Maintenance and Upgrade.
The frequency of replacing an air filter and the date of the actual replacement
for each Passport must be recorded. In 241-1501-240 Passport 15000, 20000
Hardware Installation, Maintenance and Upgrade at the procedure to replace
an air filter, a one-page form is provided. Nortel Networks intends that a
hardcopy of the form be kept near the switches for your recording
convenience and to be available upon request.
When a plug-in card or module is returned to Nortel Networks for warranty
service, you may be asked to provide a copy of the air filter replacement form
to validate the warranty. Equipment that failed due to accumulated
particulates will void that equipment's warranty.
Order a supply of replacement filters for each Passport 15000 or 20000 to
prepare for the frequency of replacement. The part numbers for the available
packages are listed in 241-1501-200 Passport 15000, 20000 Hardware
Description, the chapter of field replaceable units (FRUs).