Cisco Systems OL-6256-17 manual How to Install or Remove Air Circulation Components

Chapter 3 Installing and Removing Air Circulation Components

How to Install or Remove Air Circulation Components

Figure 3-1 Airflow Through the Cisco CRS 8-Slot Line Card Chassis

Front	Rear
	Fan
Air filter	Fan
Air enters
PLIM side	Power system

Air exits MSC and fabric card side

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The Cisco CRS 8-slot line card chassis airflow volumes are:

•Chassis airflow: Up to 900 cubic feet (25,485 liters) per minute

•Power system airflow: Up to 240 cubic feet (6,800 liters) per minute

How to Install or Remove Air Circulation Components

This section contains the following procedures:

•Installing a Lower Fan Tray, page 3-2

•Installing a Rear Exhaust Screen, page 3-4

•Removing a Lower Fan Tray, page 3-5

•Installing an Upper Fan Tray, page 3-7

•Removing an Upper Fan Tray, page 3-8

•Installing the Chassis Air Filter, page 3-9

•Removing the Chassis Air Filter, page 3-11

•Installing a Power Module Air Filter, page 3-12

•Removing a Power Module Air Filter, page 3-13

Installing a Lower Fan Tray

This section describes how to install a fan tray in the lower fan tray slot of the Cisco CRS 8-slot line card chassis. For information on the chassis airflow and circulation, see the “About Line Card Chassis Airflow” section on page 3-1. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System.

Cisco CRS Carrier Routing System 8-Slot Line Card Chassis Installation Guide

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