follow these guidelines when working on equipment powered by electricity:

    read the installation instructions before you connect the system to its power source. to see translations of the warnings that appear in this publication, refer to the regulatory compliance and safety information document that accompanied this device.

    . locate the emergency power-off switch in the room in which you are working. then, if an electrical accident occurs, you can quickly turn off the power.

    . disconnect all power before doing the following:

    - installing or removing a chassis

    - working near power supplies

    . look carefully for possible hazards in your work area, such as moist floors, ungrounded power extension cables, frayed power cords, and missing safety grounds.

    . do not work alone if hazardous conditions exist.

    . never assume that power is disconnected from a circuit. always check.

    . if an electrical accident occurs, proceed as follows:

    - use caution; do not become a victim yourself.

    - turn off power to the device.

    - if possible, send another person to get medical aid. otherwise, assess the victim's condition and then call for help.

    - determine if the person needs rescue breathing or external cardiac compressions; then take appropriate action.

    in addition, use the following guidelines when working with any equipment that is disconnected from a power source, but still connected to telephone wiring or other network cabling:

    . never install telephone wiring during a lightning storm.

    . never install telephone jacks in wet locations unless the jack is specifically designed for it.

    . never touch uninsulated telephone wires or terminals unless the telephone line is disconnected at the network interface.

    . use caution when installing or modifying telephone lines.