22Installation preparation
•To promote proper air circulation, ensure the device vents are not blocked or obstructed by cables, panels, server rack frames, or other materials. A minimum of 15 centimeters (6 inches) of space provides proper airflow.
•To prevent damage to server components, always install a blank filler panel to cover the open space and ensure proper air circulation.
•Install the device only in a server rack with perforated doors.
•Plan the device installation starting from the bottom of the server rack.
•Install the heaviest device in the bottom of the server rack.
•Do not extend more than one device out of the server rack at the same time.
•Remove the server rack doors and side panels to provide easier access during installation.
•Connect the device to a properly grounded outlet.
•Do not overload the power outlet when multiple devices are installed in the server rack.
•Install the device in a server rack that meets the following requirements:
—Minimum depth of 70 millimeters (2.76 inches) between the front mounting flange and inside of the front door.
—Minimum depth of 157 millimeters (6.18 inches) between the rear mounting flange and inside of the rear door.
—Minimum depth of 718 millimeters (28.27 inches) and maximum depth of 762 millimeters (30 inches) between the front and rear mounting flanges to support the use of the
•Do not place any object directly on a server rack mounted device. Server rack mounted devices are not meant to be load bearing units.
•When mounting this device in a server rack, do not stack units directly on top of one another in the rack. Each unit must be secured with appropriate mounting brackets. Mounting brackets are not designed to support multiple units.
Cable and connector safety
Use the following instructions to safeguard cables and connectors while working with the NSNA.
•Connect the device to a properly grounded outlet.
•Do not overload the power outlet when multiple devices are installed in the server rack.
Nortel Secure Network Access
Installation — Quick Start Switch 4070
2.0 28 July 2008
Copyright © 2008, Nortel Networks