Remove And Replace Components; Replacing Internal Power Supplies; Replace Fan Modules - Extreme Networks 8820 Hardware Installation Manual

Remove and Replace Components

Replacing Internal Power Supplies

Replace Fan Modules

Change Airflow Direction
Remove the Switch from the Rack
Use the information in the following topics to remove or replace power supply units, or fan modules, or
remove the device from the rack. You can also change the airflow direction of the device.
Replacing Internal Power Supplies
You can replace internal power supplies as needed while the switch is operating ("hot swapping").
All installed power supplies must have the same airflow direction (front-to-back or back-to-front) and
must also match the airflow direction of the fan modules.
To replace one or more AC internal power supplies in an Extreme 8820 switch, follow the steps in
a 1600 W Internal AC Power Supply
To replace one or more DC internal power supplies in an Extreme 8820 switch, follow the steps in
a 1600 W Internal DC Power Supply
Replace Fan Modules
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.
You can replace fan modules as needed while the switch is operating ("hot swapping").
All installed fan modules must blow air in the same direction and must match the airflow direction of
the installed power supplies.
•
If the switch's fan tray has a blue tab, the airflow is front-to-back. Use a fan module labeled Air Out.
•
If the switch's fan tray has a green tab, the airflow is back-to-front. Use a fan module labeled Air In.
Note
The operating-system software cannot display the airflow direction.
56 Extreme 8820 Hardware Installation Guide
on page 56
on page 56
on page 58
on page 61
on page 40.
on page 43.
Install
Install