Installing The Dust Filter; Removing The Dust Filter; Removing And Replacing The Fan Tray - Cisco ASR 903 Installing Manual

Installing the Cisco ASR 903 Router

Installing the Dust Filter

Step 1 Follow the steps for removing the fan tray (if installed) from the chassis. See
on page 21.
Step 2 Remove the dummy cover from the fan tray. See the figure in section
Step 3 Slide the dust filter onto the fan tray. See the figure in section
Step 4 Insert the dummy cover on the fan tray to secure the filter within the chassis.
Step 5
Follow the steps to install the fan tray in the chassis. See

Removing the Dust Filter

The dust filter must be removed for a replacement.
The dust filter is a single-use component.
Note
Dust Filter Maintenance
A periodic health check of the filter, every three months based on the level of dust in the environment, helps
in avoiding over clogging of the filters and provide a better life. This product's filter is used as a single-use
component. If the product is installed in a controlled environment, check and replace the filter every three
months, otherwise replace the filter every month with PID (A903-FAN-F=) or equivalent.
Step 1
Remove the dummy cover from the fan tray.
Step 2 Remove the dust filter from the fan.
The filter can be accessed by pulling the pull tab by using fingers or pliers. See the figure in section
Note
(A903-FAN-E).
Step 3 Slide the replacement dust filter onto the fan tray
Step 4 Insert the dummy cover onto the fan tray to secure the filter within the chassis.

Removing and Replacing the Fan Tray

The fan tray supports online insertion and removal (OIR). There is no need to power down the Cisco ASR
903 Router to remove or replace the fan tray. However, there is a finite time to replace the fan tray. This time
depends upon the specific RSP and fan tray combination and also the ambient temperature. The following
table provides the time interval for replacing the fan tray. At higher ambient temperatures, the replacement
time is lower.
Fan Tray
Installing the Fan Tray, on page
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
Installing the Dust Filter
Removing and Replacing the Fan Tray,
Fan Tray (A903-FAN-E).
(A903-FAN-E).
20.
Fan Tray
21