Removing The Switch From The Rack - Extreme Networks 8720 Hardware Installation Manual

Removing the Switch from the Rack

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If the switch's fan tray has a blue tab, the airflow is back-to-front. The fan module
may be labeled Air In.
Note
The operating-system software displays the airflow direction.
Before you begin, have the replacement fan module on hand so that you can complete
the replacement promptly. The switch can overheat if left without adequate cooling for
an extended time.
To replace the fan module in a switch, do the following.
1. Gently pull the tab (labeled Air Out or Air In) on the end of the fan module.
The fan module is held in place by spring clips. As you pull, the clips will disenagage
and the fan will stop.
2. Slide the fan module out of the switch and set it aside.
3. Verify that the airflow direction on the replacement fan module matches that of the
installed fan modules.
Fans with front-to-back airflow have red tabs and are labeled Air Out.
Fans with back-to-front airflow have blue tabs and are labeled Air In.
4. Carefully slide the replacement fan module into the switch.
Push until the fan module snaps into place. The fan will automatically start to
operate.
Removing the Switch from the Rack
To remove or reposition a switch after you have mounted it in a rack, follow these steps.
These procedures assume that you have attached the switch to the rack as described in
one of the following topics:
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Attaching the Switch to a Four-Post Rack
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Attaching the Switch to a Two-Post Rack
1. Disconnect the switch from its power source or sources.
2. Remove all cables and transceivers.
66 Extreme 8720 Switch Hardware Installation Guide
Removing and Replacing Components
on page 38
on page 44