Change Airflow Direction

All installed fan modules must blow air in the same direction and must match the airflow direction of the installed power supplies.

Note

The operating-system software cannot display the airflow direction.

1. Remove the PSUs and fan modules by removing the two captive retaining screws and sliding all components out of the switch.
   

   Note

   The operating-system software cannot display the airflow direction.

   

   Remove PSUs and fan modules

   

2. Use a Phillips #1 screwdriver to loosen the chassis screw.

   

   Chassis switch screw front-to-back airflow

   

3. Use a flathead screwdriver to change the chassis switch. The following figure is an example of changing front-to-back airflow to back-to-front airflow.

   

   Front-to-back airflow chassis position

   

   

   Back-to-front airflow chassis position

   

4. Use a Phillips #1 screwdriver to tighten the chassis screw.

   

   Chassis screw back-to-front position

   

5. Carefully slide the PSUs and fan modules back into the switch.

   

   Remove PSUs and fan modules

   

6. Tighten the two captive retaining screws to secure the components.