Cisco 12010 series, Руководство по установке и настройке

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Chapter 2 Preparing for Installation
Site Requirement Guidelines
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Cisco 12010, Cisco 12410, and Cisco 12810 Router Installation and Configuration Guide
OL-11496-01
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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 2-19 for grounding requirements.