Cisco Gigabit Switch Router Cisco 12012 Инструкции по замене Руководство - Страница 7

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Cisco Gigabit Switch Router Cisco 12012 Инструкции по замене Руководство

Safety with Electricity

The line cards, route processor (RP), switch fabric cards, blower modules, and redundant power
supplies are designed to be removed and replaced while the system is operating without presenting
an electrical hazard or damage to the system.
Follow these basic guidelines when working with any electrical equipment:
•
Before beginning any procedures requiring access to the interior of the Cisco 12012, locate the
emergency power-off switch for the room in which you are working.
•
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
•
If an electrical accident occurs, proceed as follows:
— Use caution; do not become a victim yourself. Disconnect power to the system.
— If possible, send another person to get medical aid. Otherwise, assess the condition of the
— Determine if the person needs rescue breathing or external cardiac compressions; then take
•
Disconnect all power and external cables before installing or removing a router.
•
Never assume that power has been disconnected from a circuit; always check.
•
Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
•
Never install equipment that appears damaged.
In addition, use the guidelines that follow when working with any equipment that is disconnected
from a power source, but still connected to telephone or network wiring:
•
Never install telephone wiring during a lightning storm.
•
Never install telephone jacks in wet locations unless the jack is specifically designed for wet
locations.
•
Never touch uninsulated telephone wires or terminals unless the telephone line has been
disconnected at the network interface.
•
Use caution when installing or modifying telephone lines.
victim and then call for help.
appropriate action.
Cisco 12012 Gigabit Switch Router DC-Input Power Supply Replacement Instructions
Safety Guidelines
7