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Chapter 2 Preparing for Installation
Safety
2-4
Cisco Global Site Selector 4491 Hardware Installation Guide
78-16356-01
Warning
This unit might have more than one power cord. To reduce the risk of electrical
shock, disconnect all power supply cords before servicing the unit.
Statement
106
Warning
This product requires short-circuit (overcurrent) protection, to be provided as
part of the building installation. Install only in accordance with national and
local wiring regulations.
Statement 1045
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
Blank faceplates and cover panels serve three important functions: they
prevent exposure to hazardous voltages and currents inside the chassis; they
contain electromagnetic interference (EMI) that might disrupt other equipment;
and they direct the flow of cooling air through the chassis. Do not operate the
system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
Warning
Do not work on the system or connect or disconnect cables during periods of
lightning activity.
Statement 1001
.
Warning
The power supply circuitry for the equipment can constitute an energy hazard.
Before you install or replace the equipment, remove all jewelry (including
rings, necklaces, and watches). Metal objects can come into contact with
exposed power supply wiring or circuitry inside the DSLAM equipment. This
could cause the metal objects to heat up and cause serious burns or weld the
metal object to the equipment.
Statement 207