Cisco Systems 7401ASR Safety Guidelines

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Cisco 7401ASR Installation and Configuration Guide

OL-5419-01 B0

Chapter2 Rack-Mounting, Tabletop Installation, and Cabling

Safety Guidelines

Safety Guidelines

Following are safety guidelines that you should follow when working with any equipment that connects

to electrical power, or which might be sensitive to electrostatic discharge (ESD) damage.

Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are

improperly handled, can result in complete or intermittent system failures. Each port adapter consists of

a printed circuit board that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding,

connectors, and a handle are integral components of the carrier. Although the carrier helps protect the

boards, use an antistatic strap whenever handling the port adapter. Handle the carriers by the handle and

the carrier edges only; never touch the boards or connector pins.

Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are

improperly handled, results in complete or intermittent failures.

Use the following guidelines for preventing ESD damage:

•Always use an ESD wrist or ankle strap and ensure that it makes good skin contact; connect the

equipment end of the strap to an unfinished chassis surface.

•Avoid contact between the printed circuit boards and clothing. The wrist strap o nl y pro t ect s

components from ESD voltages on the body; ESD voltages on clothing can still cause damage.

Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be

between 1 and 10 megaohms (Mohms).

Warning

Before you install, operate, or service the system, read the Site Preparation and Safety Guide. This

guide contains important safety information you should know before working with the system.

The environmental monitoring functionality in the Cisco 7401ASR r oute r pro tec ts t he sy st em a nd

components from potential damage from overvoltage and overtemperature conditions. To ensure normal

operation and avoid unnecessary maintenance, plan your site configuration and prepa re your site before

installation. After installation, make sure the site maintains an ambient temperature of 32°F through

104°F (0°C through 40°C), and keep the area around the chassis as fr ee f ro m d ust a s i s pr act ica l.

Planning a proper location for the Cisco 7401ASR router and the layout of your equip ment rack or wiring

closet is essential for successful system operati on. Equipment placed too close together or inadequa tely

ventilated can cause system overtemperature conditions. In addition, chassis panels made inaccessible

by poor equipment placement can make system maintenance difficult. Following are preca utions that can

help avoid problems during installation and ongoing operation.