Cisco Cisco 5508 Wireless Controller Installationsanleitung

This section describes how to remove and install the fan assembly.

To install a fan unit, you need the following tools and equipment:

A fan unit

A number 1 Phillips screwdriver

When removing the fan tray, keep your hands and fingers away from the spinning fan blades. Let the 
fan blades completely stop before you remove the fan tray. Statement 258

Replace the fan within 2 minutes to avoid overheating the controller. 

Never operate the system for an extended period if the fan assembly is removed or if it is not functioning 
properly. An over-temperature condition can cause severe equipment damage.

Follow these steps to remove the existing fan assembly:

Loosen the two captive installation screws on the fan assembly by turning them counterclockwise.

Grasp the fan assembly with both hands and pull it outward; gently move it side to side if necessary to 
unseat it from the backplane. Slide it out of the chassis and place it in a safe place.

Follow these steps to install the new fan assembly:

Slide the fan assembly into the chassis until the two captive installation screws make contact with the 
chassis.

Using a screwdriver, tighten the two captive installation screws by turning them clockwise.