Removing The Chassis Air Filter; Removing A Fan Tray - Cisco Carrier Routing System CRS-1 Installation Manual

Chapter 3 Installing and Removing Air Circulation Components
Replace the lower chassis grille:
Step 3
a.
b.

Removing the Chassis Air Filter

This section describes how to remove the air filter in the Cisco CRS 4-slot line card chassis. For further
information, see the
on regulatory compliance and safety, see Cisco CRS Carrier Routing System Regulatory Compliance
and Safety Information.
The chassis has a serviceable air filter that plugs into the front (PLIM) side of the chassis (see item 1 in
Figure
chassis grille.
Figure 3-6
1 Chassis air filter
2 Air intake grille
To remain NEBS compliant, the chassis air filter can be replaced only when the fan tray is not running.
Caution
The chassis powers down one minute after the fan tray is removed, so we recommend using two people
to replace the chassis air filter at NEBS-compliant sites. Familiarize yourself with the steps in the
"Installing a Fan Tray" section on page 3-4
replacing the chassis air filter.
OL-10971-10
Position the grille in front of the air intake slot on the lower front side of the chassis and press it
gently into place. Make sure that you align the guide pins on the lower corners of the grille with the
guide pin holes on the chassis.
Use a medium flat-blade screwdriver to tighten the two captive screws (on for each side) that hold
the grille to the front of the chassis.
"About Line Card Chassis Airflow" section on page
3-6) just inside the air intake slot. During operation, the air filter access is hidden by the lower
Chassis Air Filter
Cisco CRS Carrier Routing System 4-Slot Line Card Chassis Installation Guide
How to Install or Remove Air Circulation Components
3 Power tray and power supplies
4 Power tray air filter
and the "Removing a Fan Tray" section on page 3-5
3-1. For complete information
1
2
3
4
prior to
3-9