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Cisco AS5350 and Cisco AS5400 Universal Gateway Card Installation Guide
78-13311-01
Chapter 1 Safety Warnings, Recommendations, and Tools Required
Maintaining Safety with Electricity
Maintaining Safety with Electricity
Warning
Before working on equipment that is connected to power lines, remove jewelry (including rings,
necklaces, and watches). Metal objects will heat up when connected to power and ground and
can cause serious burns or can weld the metal object to the terminals. To see translations of the
warnings that appear in this publication, refer to the Regulatory Compliance and Safety
Information document that accompanied this device.
Follow these guidelines when you work on equipment powered by electricity.
• Locate the emergency power-OFF switch for the room in which you are working. Then, if an
electrical accident occurs, you can act quickly to turn OFF the power.
• Before working on the system, unplug the power cord.
• Disconnect all power before doing the following:
–
Installing or removing a dial feature card
–
Working near power supplies
Warning
When installing the unit, the ground connection must always be made first and disconnected last.
To see translations of the warnings that appear in this publication, refer to the Regulatory
Compliance and Safety Information document that accompanied this device.
• Do not work alone if potentially hazardous conditions exist.
• Never assume that power is disconnected from a circuit. Always check.
Warning
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.
• Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, frayed power cords, and missing safety ground connections.
• If an electrical accident occurs, proceed as follows:
–
Use caution; do not become a victim yourself.
–
Turn OFF power to the system.
–
If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
and then call for help.
–
Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.