Nortel Multiservice Switch 7400 Installation & Maintenance page 427

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Copyright © 2005, Nortel
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Hardware procedures
• the figure Changing the air filter pad in a Multiservice Switch 7480
(page 429)
If a form has not been started for this switch, print a copy of the form and fill
in the table Customer and equipment profile (page
If the air filter assembly is spring-loaded, carefully press and release the
center of the air filter cartridge. This action disengages the air filter
assembly.
or
If the air filter assembly is not spring-loaded, remove the cooling unit drawer.
See the procedure Removing the cooling unit from a Multiservice
Switch 7480 (page 396).
Carefully pull the air filter assembly out of its slot. See the figure
the air filter assembly from a Multiservice Switch 7480 (page
Turn the air filter assembly so that the bottom side faces up. See the figure
Changing the air filter pad in a Multiservice Switch 7480 (page
Open the filter gate.
Remove the old filter pad and replace it with a new filter pad.
Insert the old filter into a dust-retaining container.
Close the filter gate.
With the filter gate face down, slide the air filter assembly into its slot at the
top of the cooling unit chassis. See the figure
Multiservice Switch 7480 (page
If the air filter assembly is spring-loaded, carefully press and release the
center of the assembly to fasten it in position.
or
If the air filter assembly is not spring-loaded, replace the cooling unit drawer.
Record the filter replacement on the hardcopy of table
replacing air filters and vacuuming equipment (page
to validate the warranties of processor cards that are returned to Nortel
Networks.
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
431).
Installing an air filter in a
430).
Schedule for
431). Keep this record
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Removing
428).
429).
Nortel Confidential