Installing The Dust Filter; Removing The Dust Filter; Removing And Replacing The Fan Tray - Cisco ASR 902 Installation Manual

Installing the Cisco ASR 902 Router

Installing the Dust Filter

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

Removing the Dust Filter

The dust filter must be removed for a replacement.
Note The dust filter is a single-use component.
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.
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.
Note
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
902 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 module used and the ambient temperature. The following table provides the
time interval for replacing the fan tray. At higher ambient temperatures, the replacement time is lower.
Installing the Fan
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
Installing the Dust Filter
Removing and Replacing the Fan
Fan Tray (A902-FAN-E).
Fan Tray (A902-FAN-E).
Tray.
Tray.
11