Cisco Systems Cisco 12006 manual Site Requirement Guidelines, Environmental Guidelines, Airflow

Chapter 2 Preparing for Installation

Site Requirement Guidelines

Site Requirement Guidelines

This section provides the site requirement guidelines that you must consider before installing Cisco 12006 and Cisco 12406 Routers:

•Environmental Guidelines, page 2-9

•Rack-Mounting Guidelines, page 2-10

•Power Connection Guidelines, page 2-14

•Site Wiring, page 2-20

Environmental Guidelines

This section offers guidelines for operating Cisco 12006 and Cisco 12406 Routers in various environments. The following environmental considerations are discussed:

•Airflow

•Temperature and humidity

Airflow

The air circulation system for Cisco 12006 and Cisco 12406 Routers 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

Cisco 12006 and Cisco 12406 Routers:

•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 overtemperature 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

	Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
OL-11497-03		2-9