Safety With Electricity - Cisco 4000 Series Hardware Installation Manual

Safety Recommendations
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Safety with Electricity

This unit might have more than one power supply connection. All connections must be removed to
Warning
de-energize the unit. Statement 1028
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Warning
Statement 1001
Read the installation instructions before connecting the system to the power source. Statement 1004
Warning
Warning The covers are an integral part of the safety design of the product. Do not operate the unit without the
covers installed. Statement 1077
Follow these guidelines when working on equipment powered by electricity:
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In addition, use the following guidelines when working with any equipment that is disconnected from a
power source but has telephone wiring or other network cabling connections:
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Hardware Installation Guide for the Cisco 4000 Series Integrated Services Router
2-6
Do not wear loose clothing that may get caught in the chassis. Fasten any tie or scarf and roll up
sleeves.
Wear safety glasses when working under conditions that might be hazardous to your eyes.
Do not perform any action that may create a hazard to people or makes equipment unsafe.
Locate the emergency power-off switch in the room in which you are working. 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.
Never open the enclosure of the internal power supply.
If an electrical accident occurs to another person, proceed as follows:
Use caution; do not become a victim yourself.
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Turn off power to the device.
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If possible, send another person to get medical aid. Otherwise, assess the condition of the victim
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and then call for help.
Determine if the person needs rescue breathing or external cardiac compressions; then take
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appropriate action.
Never install telephone wiring during a lightning storm.
Chapter 2 Cisco 4000 Series ISRs Preinstallation
OL-32185-02