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Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
Chapter 5 Replacing Cisco ASR 9001 Router Components
Removing and Replacing the Air Filter
Step 7 Verify that the (green) OK status indicator on the front of the fan tray goes on. If the OK indicator does
not light, see Troubleshooting the Cooling Subsystem, page 4-18.
Figure 5-1 Removing or Installing the Fan Tray on the Cisco ASR 9010 Router Chassis
Removing and Replacing the Air Filter
The Cisco ASR 9001 Series Router, when used with the air plenum, has a serviceable air filter (Cisco
PID ASR-9001-PLNMFLTR=) that is accessible from the top of the of the air filter assembly
(Figure 5-2). The air filter removes dust from the room air drawn into the chassis by the fan trays.
Regularly check the air filter at least every three months. If used in a dusty environment, check the air
filter once a month. Replace it if it appears excessively dirty or damaged. Failure to replace a
compromised air filter can result in insufficient air circulation through the chassis.
Note To comply with Telecordia GR-63-Core standard air filter requirements for NEBS deployments, the air
filter must be replaced.
Note The air filter can be removed from the air plenum assembly without removing the cables or the fan tray.
To replace the air filter, follow these steps:
Step 1 Loosen the two captive screws on the air filter cover and remove it from the chassis.
Step 2 Grasp the pull tab in the center of the air filter, and slide it out from the slot.
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