Cisco ASR 9922 Manual - Halaman 4

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Replacing the Chassis Air Filter

Procedure

Step 1

Set the power switch on each power tray to the off (0) position.

Step 2

Power off all circuit breakers for the source power lines connected to the power trays.

Step 3

Verify that the Pwr OK indicator on each power module is off.

Step 4

Verify that the OK indicator on the fan tray is off.

Replacing the Chassis Air Filter

The Cisco ASR 9000 Series Routers are equipped with user-replaceable air filters that help prevent dust from

being drawn into the router. One time per month (or more often in dusty environments), examine the air filters

for damage and cleanliness.

Note

In the Cisco ASR 9006 Router, Cisco ASR 9010 Router, Cisco ASR 9904 Router, Cisco ASR 9906 Router,

and Cisco ASR 9910 Router, the chassis air filter is not serviceable. We recommend that you replace the filter

at regular maintenance intervals. The interval may vary between 3 and 12 months depending on the environment.

Note

In the Cisco ASR 9922 Router and Cisco ASR 9912 Router, the three air filters (left, center, and right) contain

foam media which filters the air going into the chassis. The three air filters can be removed from the chassis

so that the foam media (Cisco PIDs 9922-CEN-FLTRMED= and 9922-LR-FLTRMED=) can be replaced on

a regular maintenance interval. The interval may vary between 3 and 12 months depending on the environment.

Caution

Damage to the air filter can restrict the airflow, cause overheating in the router, and degrade electromagnetic

interference (EMI) compliance. Be careful when cleaning and replacing the filter.

This table describes the air filter locations for the Cisco ASR 9000 Series Routers.

Table 1: Air Filter Locations for the Cisco ASR 9000 Series Routers

Router

Cisco ASR 9010 Router

Cisco ASR 9006 Router

Cisco ASR 9904 Router

Cisco ASR 9910 Router

Cisco ASR 9906 Router

Replacing Cisco ASR 9000 Series Router Components

Air Filter Location

Located underneath the fan trays.

Located along the right side of the chassis and is accessible from the rear.

Single air filter located along the right side of the chassis and is accessible from

the rear.

Located underneath the card cage.

Replacing Cisco ASR 9000 Series Router Components