Replacing the Fan
When a fan in the fan tray stops working, the other fans in the tray increase to maximum
speed. It is recommended that you replace the fan within 60 seconds. The fans should
never be removed for longer than two minutes.
Before you begin
Before you begin this procedure, be sure to wear a properly grounded ESD wrist strap.
Procedure
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1
Ensure that the space in front of the fan unit is completely clear of fibers, cables, and so
on.
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2
Ensure that the new fan unit is completely unpacked and ready to install before removing
old fan unit.
Note: The 1830 PSS-36/PSS-32/PSS-16/PSS-4 circuit packs require constant airflow
for cooling and will overheat quickly with the fan removed. Do not remove the old
fan until you are ready to immediately install the new fan or customer traffic may be
affected.
Supporting procedures
Replacing System Components
Replacing the Fan
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1830 PSS-36/PSS–32/PSS-16/PSS-4
8DG60888CAAA Release 3.6.0 and 3.6.1
Issue 1 June 2011
3-53
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