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4. Installation
4.2.4 Equipment Installation
WARNING: Do not install equipment until you have stabilized the enclosure. Install heavier equipment first
and install it toward the bottom of the enclosure. Install equipment starting from the bottom of the
enclosure and proceeding toward the top of the enclosure - never the reverse. If using sliding equipment
rails, be careful when extending the rails. Do not extend more than one set of sliding equipment rails at
one time. Avoid extending sliding equipment rails near the top of the enclosure.
Note:
The square holes at the middle of each rack unit are numbered and also include a small notch to aid identification. A single rack
unit includes the space occupied by the numbered hole and the holes directly above and below.
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2
1 Rack Unit
1 Rack Unit
4.2.5 Installing or Removing Cage Nuts
WARNING: The flanges of the cage nuts should engage the sides of the square opening in the rail, not the
top and bottom. Follow the instructions in your equipment documentation to ensure proper installation of
your equipment.
Installing Cage Nuts
1
Locate the numbered square openings in the mounting rails where you
plan to install your equipment. You will install cage nuts (included) into the
square openings to provide an attachment point for the mounting screws
(included).
Note:
Consult your equipment documentation to determine how many cage nuts will
be required and where they will need to be installed.
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1
1
2
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3
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2
From the inside of the mounting rail, insert one of the flanges of the cage
nut through the square opening. Press it against the side of the square
opening. Each flange should engage one side of the square opening, not
the top or bottom.
3
Compress the cage nut at the sides slightly to allow the remaining flange
to fit through the square opening. When the cage nut is properly installed,
both flanges will protrude through the square opening and will be visible
on the outer surface of the mounting rail. Repeat steps 1-3 until all
required cage nuts are installed.