Cisco XR 12404 Installation Manual page 41

Chapter 1 Cisco XR 12404 Router Overview
Fan Tray Assembly
The fan tray assembly is a sheet metal enclosure containing 7 fans and 2 fan
controller cards (Figure 1-14).
Warning Exhaust from other equipment vented directly into the Cisco XR 12404 router air
inlet can cause an over-heat condition. Install the router so that it is protected
from a direct flow of hot air from other equipment.
Figure 1-14 Fan Tray Assembly
The fan tray assembly draws room air in through the air filter, across the card cage
and out through exhaust vents located on the side of the chassis.
Warm air exits at the side of the chassis. Allow sufficient air flow by maintaining
Note
6 inches (15.24 CM) of clearance at both the inlet and exhaust openings on the
chassis.
A fan tray assembly controller card monitors the operation of the 7 fans.
Cisco XR 12404 Router Installation Guide
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