Cisco Systems XR 12406 manual Environmental Guidelines, Airflow

Chapter 2 Preparing for Installation

Installation Site Requirements

Environmental Guidelines

This section offers guidelines for operating a Cisco XR 12406 Router in various environments. The following environmental considerations are discussed:

•Airflow

•Temperature and humidity

Airflow

The air circulation system for a Cisco XR 12406 Router consists of one blower module mounted at the rear of the chassis. The blower module maintains acceptable operating temperatures for the internal components by drawing cooling air in through replaceable air filters located on the right side of the chassis. Air circulates through the card cage and exhausts at the rear of the chassis.

Observe the following guidelines when selecting a site in which to install a Cisco XR 12406 Router:

•Dust free—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. This can cause an over temperature condition in the router.

•Air flow—Allow sufficient air flow by maintaining a minimum of 6 inches (15.24 cm) of clearance at both the inlet and exhaust openings on the chassis and the power modules. If the air flow is blocked or restricted, or if the inlet air is too warm, an over temperature condition can occur within the router. Under extreme conditions, the environmental monitoring system shuts down the power to protect the router components.

	Cisco XR 12406 Router Installation Guide
OL-13831-01		2-13