User Guide

2-5
Cisco Global Site Selector 4490 Hardware Installation Guide
78-15755-02
Chapter 2 Preparing for Installation
Safety Warnings
Warning When installing or replacing the unit, the ground connection must always be
made first and disconnected last.
Warning After installing system components in a rack, never pull more than one
component out of the rack on its slide assemblies at one time. The weight of
more than one extended component could cause the rack to tip over and injure
someone.
Warning Stability hazard. The rack stabilizing mechanism must be in place, or the rack
must be bolted to the floor before you slide the unit out for servicing. Failure to
stabilize the rack can cause the rack to tip over.
Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must
take special precautions to ensure that the system remains stable. The
following guidelines are provided to ensure your safety:
• This unit should be mounted at the bottom of the rack if it is the only unit in
the rack.
• When mounting this unit in a partially filled rack, load the rack from the
bottom to the top with the heaviest component at the bottom of the rack.
If the rack is provided with stabilizing devices, install the stabilizers before
mounting or servicing the unit in the rack.
Warning This equipment is to be installed and maintained by service personnel only as
defined by AS/NZS 3260 Clause 1.2.14.3 Service Personnel.
Warning The safety cover is an integral part of the product. Do not operate the unit
without the safety cover installed. Operating the unit without the cover in place
will invalidate the safety approvals and pose a risk of fire and electrical
hazards.