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Cooling unit replacement
Replace a cooling unit in a Nortel Multiservice Switch device if the cooling unit
or one of its fans fails.
Cooling unit replacement prerequisites
•
A fully provisioned Nortel Multiservice Switch 7460 can operate with 4 of
the 5 fans operational. The fifth fan is a redundant backup. To replace a
failed fan means you must replace the entire cooing unit.
Cooling unit replacement task flow
This task flow show you the sequence of procedures you do to replace a
cooling unit in a Nortel Multiservice Switch 7480, Multiservice Switch 7440, or
Multiservice Switch 7460. To link to any procedure, go to
(page
Copyright © 2005, Nortel
CAUTION
Risk of equipment damage
Remove and install cooling units in under 10 minutes. You can
damage CPs and FPs and they can fail if the fans are off longer than
10 minutes.
76).
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
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