Cisco XR 12410 User Manual download pdf (Page 63)

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Cisco XR 12410 and Cisco XR 12810 Router Installation Guide

OL-17441-01

Chapter 2 Preparing for Installation

Site Requirement Guidelines

• Unrestricted 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

powers off the router to protect the components.

Temperature and Humidity Guidelines

The operating and nonoperating environmental site requirements are listed in

Table A-4 on page A-5. The router normally operates within the ranges listed in

Table A-4, however, if a temperature measurement is approaching a minimum or

maximum parameter it indicates a potential problem. Maintain normal operation

by anticipating and correcting environmental anomalies before they approach

critical values by properly planning and preparing your site before you install the

router.

Power Connection Guidelines

You can configure the router with either an AC-input or DC-input power

subsystem, so the site power source requirements differ depending on the power

subsystem in your router. Ensure all power connection wiring conforms to the

rules and regulations in the National Electrical Code (NEC), as well as local

codes.

Caution Proper grounding is necessary to avoid damage from lightning and power surges.

See the

“NEBS Supplemental Unit Bonding and Grounding Guidelines” section

on page 2-18 for grounding requirements.

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Cisco XR 12410 User Manual Page 63