Cisco NCS 4206 Installing page 14

Removing the Dust Filter
Removing the Dust Filter
Remove the dust filter for a replacement.
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.
Step 1 Remove the dummy cover from the fan tray.
Step 2
Remove the dust filter from the fan.
Note The filter can be accessed by pulling the pull tab by using fingers or pliers.
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 NCS
4206 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.
Note
Table 1: Fan Tray OIR
Temperature °C at 1800 m
–40 to 15
16 to 20
Installing the Cisco NCS 4206
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• The dust filter is a single-use component.
• Use the dust filter (A903-FAN-F) within 6 months of buying as the shelf or storage life is less than 6
months. The ideal storage condition for a filter is a cool, dry, and dark environment. Surroundings that
adversely affect the dust filter are high heat, humidity at high temperatures, and ultraviolet light.
If a fan tray is removed and not replaced within the stipulated time the system will automatically power-off.
If the system is powered with PSUs other than 900W DC or 1200W AC and if the system is powered off,
then the system should be completely powered off for 30 seconds with all the PSU in the system simultaneously,
and then turned on for the system to power on.
OIR Interval
2 minutes 10 seconds
100 seconds
Installing the Cisco NCS 4206