Temperature And Humidity; Rack-Mounting Guidelines; Types Of Equipment Racks - Cisco 12406 Installation And Configuration Manual

Site Requirement Guidelines

Temperature and Humidity

Rack-Mounting Guidelines

Types of Equipment Racks

Cisco 12006 and Cisco 12406 Router Installation and Configuration Guide
2-10
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
air is too warm, an overtemperature condition can occur within the router.
Under extreme conditions, the environmental monitoring system shuts down
the power to protect the router components.
The operating environmental site requirements are listed in
"Technical Specifications."
within which Cisco 12006 and Cisco 12406 Routers will continue to operate. You
can maintain normal operation by anticipating and correcting environmental
irregularities before they approach critical values.
The environmental monitoring functionality built into Cisco 12006 and
Cisco 12406 Routers protects the system and components from potential damage
from overvoltage and overtemperature conditions. To assure normal operation and
avoid maintenance difficulty, plan and prepare your site before you install the
router.
Before installing Cisco 12006 and Cisco 12406 Routers in a rack, consider the
general rack-mounting guidelines in the following sections.
Cisco 12006 and Cisco 12406 Routers can be mounted in most two-post,
four-post, or telco-type 19-inch equipment racks that comply with the Electronics
Industries Association (EIA) standard for equipment racks (EIA-310-D). The rack
must have at least two posts with mounting flanges on which to mount the router
chassis. The distance between the center lines of the mounting holes on the two
mounting posts must be 18.31 inches ± 0.06 inch (46.50 cm ± 0.15 cm).
Chapter 2
The temperature and humidity ranges listed are those
Preparing for Installation
Appendix A,
OL-11497-03