Cisco Systems Cisco XR 12416 manual Blower Module

Chapter 1 Product Overview

Blower Module

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 1-15):

Figure 1-15	Blower Module
	LEDs

129308

•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

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. Figure 1-16illustrates the air flow path through the chassis.

	Cisco XR 12416 Router Installation Guide
OL-13833-01		1-31