Airflow Guidelines; Temperature And Humidity Guidelines; Power Considerations - Cisco NAC3350-PROF-K9 - NAC Profiler Server Installation Manual

Chapter 2 Preparing for Installation

Airflow Guidelines

To ensure adequate airflow through the equipment rack, it is recommended that you maintain a clearance
of at least 6 inches (15.24 cm) at the front and the rear of the rack. If airflow through the equipment rack
and the appliances that occupy it is blocked or restricted, or if the ambient air being drawn into the rack
is too warm, an overtemperature condition within the rack and the appliances that occupy it can occur.
The site should also be as dust-free as possible. Dust tends to clog the appliance fans, reducing the flow
of cooling air through the equipment rack and the appliances that occupy it. This reduction increases the
risk of an overtemperature condition.
Additionally, the following guidelines will help you plan your equipment rack configuration:
•
•

Temperature and Humidity Guidelines

Table 2-1
Appliance CAM/CAS. The appliance normally operates within the ranges listed; however, a temperature
measurement approaching a minimum or maximum parameter indicates a potential problem. Maintain
normal operation by anticipating and correcting environmental anomalies before they approach critical
values by properly planning and preparing your site before you install the appliance.
Table 2-1
Specification
Temperature, ambient operating
Temperature, ambient nonoperating and storage
Humidity, ambient (noncondensing) operating
Humidity, ambient (noncondensing)
nonoperating and storage
Vibration, operating

Power Considerations

You configure the Cisco NAC Appliance CAM/CAS with AC-input power only. Ensure that all power
connections conform to the rules and regulations in the National Electrical Codes (NECs), as well as
local codes. When planning power connections to your appliance, the following precautions and
recommendations must be followed:
•
•
OL-20326-01
Besides airflow, you must allow clearance around the rack for maintenance.
When mounting an appliance in an open rack, ensure that the rack frame does not block the front
intakes or the rear exhausts.
lists the operating and non-operating environmental site requirements for the Cisco NAC
Operating and Nonoperating Environmental Specifications
Check the power at your site before installation and periodically after installation to ensure that you
are receiving clean power (free of spikes and noise). Install a power conditioner if necessary.
The AC power supply includes the following features:
– Autoselect feature for 110-V or 220-V operation.
An electrical cord for all appliances. (A label near the power cord indicates the correct voltage,
–
frequency, current draw, and power dissipation for the appliance.)
Preparing Your Site for Installation
Minimum
50°F (10°C)
-40°F (°C)
10%
5%
5–500 Hz, 2.20 g RMS random
Cisco NAC Appliance Hardware Installation Guide
Maximum
95°F (35°C)
158°F (70°C)
90%
95%
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