Cisco Systems Cisco CRS-1 manual Removing the Chassis Air Filter

Chapter 3 Installing and Removing Air Circulation Components

How to Install or Remove Air Circulation Components

Step 3 Replace the lower chassis grille:

a.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.

b.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.

Removing the Chassis Air Filter

This section describes how to remove the air filter in the Cisco CRS-1 4-slot line card chassis. For further information, see the “About Line Card Chassis Airflow” section on page 3-1. For complete information on regulatory compliance and safety, see Cisco CRS-1 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 number 1 in Figure 3-6) just inside the air intake slot. During operation, the air filter access is hidden by the lower chassis grille.

Figure 3-6 Chassis Air Filter

158365

1

2

3

4

1	Chassis air filter	3	Power tray and power supplies
2	Air intake grille	4	Power tray air filter

Caution To remain NEBS compliant, the chassis air filter can be replaced only when the fan tray is not running. 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 3-4and the “Removing a Fan Tray” section on page 3-5prior to replacing the chassis air filter.

Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide

OL-10971-07 3-9