Replacing Fan Modules - Extreme Networks ExtremeRouting SLX 9740 Hardware Installation Manual

Replacing Fan Modules

Figure 37: Airflow groove alignment (front-to-back shown)
Replacing 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.
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.
74 ExtremeRouting SLX 9740 Hardware Installation Guide
Fan Assemblies