Cisco XR 12410 - Manual (Page 62)

Chapter 2 Preparing for Installation
Site Requirement Guidelines
2-12
Cisco XR 12410 and Cisco XR 12810 Router Installation Guide
OL-17441-01
Air Flow Guidelines
Cool air is circulated through the router by the blower module located at the top
of the chassis. The blower module maintains acceptable operating temperatures
for the internal components by drawing in cool air through the air filter in front of
the switch fabric and alarm card cage, and circulating the air through both card
cages (
Figure 2-6 ). Each power supply is also equipped with a fan that draws
cooler air into the front of the power supply and forces warmer air out of the back
of the chassis.
Figure 2-6 Air Flow Path through the Router—Side View
When selecting a site to install the router, observe the following guidelines:
• Dust free area—The site should be as dust free as possible. Dusty
environments can clog the air filter or power supply intake vents, reducing the
cooling air flow through the router. Clogged filters and vents can cause an
overtemperature condition in the router.
Air exhaust
Line card and RP card cage
Room air
Air filter
Switch fabric card cage
Blower module
Power supplies
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