Network Card User Manual

Rack-Mounting Considerations
Cisco AS5800 Universal Access Server Hardware Installation Guide2-18
• Install the forward rack-mount brackets (if needed for your rack configuration) before you install
the dial shelf in the rack; then install the rear brackets.
• Install the dial shelf in an open rack whenever possible. If installation in a cabinet is unavoidable,
ensure that the cabinet has adequate ventilation.
Caution To prevent the dial shelf from overheating, never install your Cisco AS5800 in a cabinet
or room that is not properly ventilated or air conditioned.
• Allow sufficient clearance around the rack for maintenance. You need 24 in. (61 cm) of clearance
to remove and replace system components.
• Always install heavier equipment in the lower half of a rack to maintain a low center of gravity
and prevent the rack from falling 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.
• If you use telco racks, be sure that the rack is bolted to the floor and secured, because in these
types of installations only one end of the dial shelf mounts to the two rack posts. Ensure that the
weight of the dial shelf does not make the rack unstable.
• When connecting the dial shelf (or the optional AC-input power shelf) to the site power source
(supply circuit), take care not to overload the wiring.
• To see translations of the warnings that appear in this publication, refer to the Regulatory
Compliance and Safety Information document that accompanied this device.
Warning Care must be given to connecting units to the supply circuit so that wiring is not
overloaded. To see translations of the warnings that appear in this publication, refer to the Regulatory
Compliance and Safety Information document that accompanied this device.
• Ensure that the dial shelf is connected to earth ground during normal use.
Warning This equipment is intended to be grounded. Ensure that the host is connected to earth
ground during normal use. To see translations of the warnings that appear in this publication, refer
to the Regulatory Compliance and Safety Information document that accompanied this device.
• If you plan to use an equipment shelf, ensure that the shelf is constructed to support the weight
and dimensions of the dial shelf. Figure 2-10 shows the dial shelf footprint, which you will need
if you are designing a customized shelf. We recommend that you use the rack-mount kit designed
for your Cisco 5814 dial shelf.