Cisco XR 12816 Manuel d'installation - Page 37

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Chapter 1

Product Overview

Each blower module contains three variable speed fans and a controller card. The

two front cover LEDs provide a visual indication of blower module status

(Figure

Figure 1-18

•

The blower modules maintain acceptable operating temperatures for the internal

components by drawing cool air through a replaceable air filter into the switch

fabric card cage and then through the upper and lower card cages.

illustrates the air flow path through the chassis.

OL-17440-01

1-18):

Blower Module

LEDs

OK (green)—All three fans are operating normally.

FAIL (red)—The system has detected a fan failure or other fault in the blower

module. The fault can be caused by any of the following:

One or more fans are not operating

–

One or more fans are running below speed

–

A controller card fault

–

Cisco XR 12416 and Cisco XR 12816 Router Chassis Installation Guide

Blower Module

Figure 1-19

1-37