2-11
Cisco Global Site Selector 4490 Hardware Installation Guide
78-15755-01
Chapter 2 Preparing for Installation
Safety Guidelines
• Ensure that cables from other equipment do not obstruct the airflow through
the chassis or impair access to the power supplies or cards. Route cables away
from field-replaceable components to avoid disconnecting cables
unnecessarily for equipment maintenance or upgrades.
Stabilizing the System
Observe the following general precautions to stabilize the system:
• Install any stabilizers that came with your equipment rack before mounting
or servicing the system in the rack.
• Load the rack from the bottom to the top, with the heaviest system at the
bottom.
• Do not stack the system on top of any other equipment. If the system falls, it
can cause severe bodily injury and damage the equipment.
• If you are using an equipment shelf, ensure that the shelf is constructed to
support the weight and dimensions of the chassis.
• If you are using a telco rack, ensure that the weight of the chassis does not
make the rack unstable. Secure the telco rack with ceiling brackets if the rack
is populated with heavy equipment.
• Bolt the rack to the floor for stability.
Lifting the System
Observe the following general precautions when lifting the system:
• Disconnect all power and external cables before lifting the system.
• Ensure that your footing is solid and the weight of the system is evenly
distributed between your feet.
• Lift the system slowly, keeping your back straight. Lift with your legs, not
with your back. Bend at the knees, not at the waist.
• Depending on the weight of the system, more than one person might be
required to lift it.
