User guide

Installing and Managing Power over Ethernet (PoE) Setting Up Power over Ethernet Hardware
OmniSwitch 7700/7800 Hardware Users Guide April 2005 page 3-11
Rack-Mounting the Power Shelf
Refer to the important guidelines below before installing the power shelf in a rack.
• If the power shelf was not shipped with power supplies installed, it is recommended that you install the
power supplies after you have rack mounted the switch. This will minimize the weight of the chassis
when positioning and installing the power shelf. For detailed information on installing power supplies,
refer to page 3-13.
• It is recommended that two people install the power shelf in the rack—one person to hold the unit and
position it in the rack, and a second person to secure the unit to the rack using the rack attachment
screws (not provided).
• Alcatel provides two rack-mount flanges with each power shelf. These flanges support standard
19-inch rack mount installations. These flanges must be attached to the power shelf before the power
shelf can be rack mounted.
Note. If you are installing the power shelf in a 23-inch wide rack, Alcatel offers optional 23-inch rack-
mounting hardware. For more information, contact your Alcatel representative.
• Alcatel does not provide rack-mount screws. Use the screws supplied by the rack vendor.
• To prevent a rack from becoming top heavy, it is recommended that you install heavier equipment at
the bottom of the rack whenever possible.
• If you are installing the power shelf in a relay rack, be sure to install and secure the rack per the rack
manufacturer’s specifications.
To rack-mount the power shelf, follow the steps below.
1 Align the holes in the provided rack-mount flanges with the threaded holes located in the left and right
sides of the unit.
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