When you connect or disconnect the power and/or alarm connector with power applied, an electrical arc
can occur. This could cause an explosion in hazardous area installations. Be sure that all power is removed
from the switch and any other circuits. Be sure that power cannot be accidentally turned on or verify that
the area is nonhazardous before proceeding. Statement 1058
Warning
This equipment is intended to be grounded to comply with emission and immunity requirements. Ensure
that the switch functional ground lug is connected to earth ground during normal use. Statement 1064
Warning
If you connect or disconnect the console cable with power applied to the switch or any device on the
network, an electrical arc can occur. This could cause an explosion in hazardous location installations. Be
sure that power is removed or the area is nonhazardous before proceeding. Statement 1080
Warning
Installation of the equipment must comply with local and national electrical codes. Statement 1074Warning
Hazardous voltage or energy may be present on power terminals. Always replace cover when terminals
are not in service. Be sure uninsulated conductors are not accessible when cover is in place. Statement
1086
Warning
When working on equipment powered by electricity, follow these guidelines:
• Locate the room’s emergency power-off switch. If an electrical accident occurs, you will be able to
quickly turn off the power.
•
Before working on the system, turn off the DC main circuit breaker and disconnect the power terminal
block cable.
•
Before doing the following, disconnect all power:
◦
Working on or near power supplies
◦
Installing or removing a router chassis or network processor module
◦
Performing most hardware upgrades
•
Never install equipment that appears damaged.
•
Carefully examine your work area for possible hazards, such as moist floors, ungrounded power extension
cables, and missing safety grounds.
•
Never assume that power is disconnected from a circuit; always check.
•
Never perform any action that creates a potential hazard to people or makes the equipment unsafe.
•
If an electrical accident occurs, proceed as follows:
◦
Use caution, and do not become a victim yourself.
◦
Turn off power to the router.
Cisco ASR 9000 Series Aggregation Services Router Satellite Systems Installation Guide
7
Installing the Cisco ASR 903 Router as a Satellite Shelf
Safety with Electricity
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