Installation guide

ADC Telecommunications, Inc.
68 C
HAPTER 3: RACK-MOUNTING THE SYSTEM
Rack-Mount Order
The Cuda 12000 components should be rack-mounted in this order:
The rack should be filled from the bottom up.
1. Install the plenum that will facilitate the inflow of air, as described in
“Rack-Mounting the Intake Plenum” on page 68.
2. Install the fan tray directly above the intake plenum, as described in
“Rack-Mounting the Fan Tray” on page 69.
3. Install the chassis, as described in “Rack-Mounting the Chassis” on
page 71.
4. If you are installing a second chassis, repeat steps 1 through 3.
5. If you are installing a third chassis, repeat steps 1 through 3 again.
6. Install the exhaust plenum, as described in “Rack-Mounting the Exhaust
Plenum” on page 74.
Rack-Mounting the Intake Plenum
You must rack-mount a plenum directly beneath each fan tray to guarantee
the minimum necessary air space of 2 U’s (3 1/2 inches) and ensure that
adequate air flows into the system. A plenum functioning in this capacity is
referred to as an intake plenum.
You must mount the intake plenum directly below each fan tray in the rack.
For more information on the proper placement of system components in a
rack, see “System Placement in the Rack” on page 64.
CAUTION: If for any reason you are not using plenums, be sure to leave 2
U’s (3.5 inches) of vertical rack space where they would normally be
mounted.
Use this procedure to rack-mount the intake plenum:
1. Determine the placement of the plenum in the rack as described in
“System Placement in the Rack” on page 64.
2. Position the plenum so that the front end that contains the filtering
screen is facing towards you.