Cisco NAC3350-PROF-K9 Hardware Installation Guide - Page 50

Site Environment, Airflow Guidelines, Preventing Electrostatic Discharge, Damage

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Preparing Your Site for Installation Chapter 2 Preparing for Installation Before installing your Cisco NAC Appliance CAM/CAS in a rack, review the following guidelines: • Two or more people are required to install the appliance in a rack. • Ensure that the room air temperature is below 95°F (35°C). • Do not block any air vents; usually, 6 inches (15 cm) of space provides proper airflow. • Plan the appliance installation starting from the bottom of the rack. • Do not extend more than one appliance out of the rack at the same time. • Connect the appliance to a properly grounded outlet. • Do not overload the power outlet when installing multiple devices in the rack. • Do not place any object weighing more than 110 lb (50 kg) on top of rack-mounted devices. Site Environment The location of your appliance and the layout of your equipment rack or wiring room are extremely important considerations for proper operation. Equipment placed too close together, inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make maintenance difficult. Plan for access to front- and rear-panels of the appliance. The following precautions will help you plan an acceptable operating environment for your appliance and will help you avoid environmentally caused equipment failures: • Ensure that the room where your appliance operates has adequate circulation. Electrical equipment generates heat. Without adequate circulation, ambient air temperature may not cool equipment to acceptable operating temperatures. For more information, see Airflow Guidelines, page 2-9. • Ensure that the site of the rack includes provisions for source AC power, grounding, and network cables. • Allow sufficient space to work around the rack during the installation. You need: - At least 3 feet (9.14 m) adjacent to the rack to move, align, and insert the appliance. - At least 24 inches (61 cm) of clearance in front of and behind the appliance for maintenance after installation. • To mount the appliance between two posts or rails, the usable aperture (the width between the inner edges of the two mounting flanges) must be at least 17.7 inches (45.0 cm). Note The rack-mount kit does not include a two-post equipment rack. • Use appropriate strain-relief methods to protect cables and equipment connections. • To avoid noise interference in network interface cables, do not route them directly across or along power cables. • Always follow ESD-prevention procedures as described in Preventing Electrostatic Discharge Damage, page 2-5 to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure. Cisco NAC Appliance Hardware Installation Guide 2-8 OL-20326-01

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2-8
Cisco NAC Appliance Hardware Installation Guide
OL-20326-01
Chapter 2
Preparing for Installation
Preparing Your Site for Installation
Before installing your Cisco NAC Appliance CAM/CAS in a rack, review the following guidelines:
•
Two or more people are required to install the appliance in a rack.
•
Ensure that the room air temperature is below 95°F (35°C).
•
Do not block any air vents; usually, 6 inches (15 cm) of space provides proper airflow.
•
Plan the appliance installation starting from the bottom of the rack.
•
Do not extend more than one appliance out of the rack at the same time.
•
Connect the appliance to a properly grounded outlet.
•
Do not overload the power outlet when installing multiple devices in the rack.
•
Do not place any object weighing more than 110 lb (50 kg) on top of rack-mounted devices.
Site Environment
The location of your appliance and the layout of your equipment rack or wiring room are extremely
important considerations for proper operation. Equipment placed too close together, inadequate
ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make maintenance
difficult. Plan for access to front- and rear-panels of the appliance.
The following precautions will help you plan an acceptable operating environment for your appliance
and will help you avoid environmentally caused equipment failures:
•
Ensure that the room where your appliance operates has adequate circulation. Electrical equipment
generates heat. Without adequate circulation, ambient air temperature may not cool equipment to
acceptable operating temperatures. For more information, see
Airflow Guidelines, page 2-9
.
•
Ensure that the site of the rack includes provisions for source AC power, grounding, and
network cables.
•
Allow sufficient space to work around the rack during the installation. You need:
–
At least 3 feet (9.14 m) adjacent to the rack to move, align, and insert the appliance.
–
At least 24 inches (61 cm) of clearance in front of and behind the appliance for maintenance
after installation.
•
To mount the appliance between two posts or rails, the usable aperture (the width between the
inner
edges of the two mounting flanges) must be at least 17.7 inches (45.0 cm).
Note
The rack-mount kit does not include a two-post equipment rack.
•
Use appropriate strain-relief methods to protect cables and equipment connections.
•
To avoid noise interference in network interface cables, do not route them directly across or along
power cables.
•
Always follow ESD-prevention procedures as described in
Preventing Electrostatic Discharge
Damage, page 2-5
to avoid damage to equipment. Damage from static discharge can cause
immediate or intermittent equipment failure.