Installing Upward Deflectors On Fan Assemblies - Brocade Communications Systems MLX Series Installation Manual

Replacing fan assemblies

Installing upward deflectors on fan assemblies

Before beginning this procedure, verify that you have the correct number of upward deflectors (part number 80-1004745-01). You can
install up to eight deflectors on each router. You can remove each fan assembly while the router is running; however, you must not
remove more than one fan assembly at any time to prevent the router from overheating.
NOTE
If the router is not receiving power, you can remove more than one fan assembly at a time.
It will take about one hour to complete this procedure for each Brocade MLX-32 router.
The following items are required for this procedure:
•
Phillips screwdriver
•
Small flathead screwdriver
•
ESD wrist strap
For safety reasons, the ESD wrist strap should contain a 1 megohm series resistor.
Removing a fan assembly from the chassis
To remove a fan assembly from the chassis that is receiving power, complete the following steps:
1. Put on the ESD wrist strap and ground yourself by inserting the plug into the ESD connector on the router.
2. Use the appropriate screwdriver to remove the screws that secure the fan assembly faceplate to the rear of the router.
The 32-slot router fan assembly is heavy and will be off-balance as you remove it. Use both hands on the
handle.
Be careful not to insert your fingers into the fan while removing it from the device. The fan blades may still
be spinning at a high speed.
Removing the rear fan modules on a 32-slot router provides access to bus bars and the backplane. Avoid
contact with these parts. Hazardous energy levels exist at these locations.
3. Remove the fan assembly by grasping the handle on the faceplate and pulling the fan assembly toward you. Pulling the fan
assembly unseats the fan connector from the router.
272 Brocade MLX Series and Brocade NetIron XMR Installation Guide
53-1004195-02