Extreme Networks Extreme 7520 Series - Remove the Device from the Rack; Remove the Switch from a Four-Post Rack

• If the fan module has a blue tab, the airow is back-to-front. Use a fan module
labeled Air In.
Note
The operating-system software cannot display the airow 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 disengage
and the fan will stop.
2. Slide the fan module out of the switch and set it aside.
3. Verify that the airow direction on the replacement fan module matches that of the
installed fan modules.
Fans with front-to-back airow have red tabs and are labeled Air Out.
Fans with back-to-front airow 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.
Remove the Device from the Rack
These procedures assume that you have attached the device to the rack as described in
one of the following topics:
• Four-Post Rack Mount on page 54
• Two-Post Rack Mount on page 57
Remove the Switch from a Four-Post Rack
To remove or reposition a device after you have mounted it in a rack, follow these steps.
1. Disconnect the device from its power source or sources.
2. Remove all cables and transceivers.
3. To remove a device from a four-post rack, do the following:
a. Push the disconnect latch to release the device after it is fully extended.
Remove the Device from the Rack Remove and Replace Components
74 Extreme 7520 Hardware Installation Guide