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Cisco ASR 9001 and Cisco ASR 9001-S Routers Hardware Installation Guide
Chapter2 Unpacking and Installing the Chassis
Installing the Optional Air Plenum Kit
Installing the Air Plenum Kit
The air plenum kit is mounted in the rack before the CiscoASR 9001 Router is installed. The steps for
mounting the air plenum kit in the rack are different, depending on the whether the kit is pre-assembled
before mounting it in the rack or assembled after the plenum base is mounted in the rack.
•If the air plenum kit is pre-assembled before mounting it in the rack:
The side baffles, air filter assembly, and cable management tray are attached to the plenum base
outside the rack. The plenum assembly is then installed from the rear of the 19-inch rack, or from
the front or rear of the 23-inch rack.
•If the air plenum kit is assembled after the plenum is mounted in the rack:
The plenum base is first installed from the front (applicable to 19-inch rack). The side baffles, air
filter assembly, and cable management tray are then installed in the plenum base after it has been
mounted in the rack.
Note The cable guide is attached to the rack after the Cisco ASR 9001 Router is installed.

Installing the Air Plenum Kit in a 19-inch Rack

Note The air plenum kit is assembled and mounted in the rack before the Cisco ASR 9001 Router is installed.
To install the air plenum kit in a two-post or four-post 19-inch rack, follow these steps:
Step1 Place the plenum base on a flat and stable surface. Secure the left and right adapter plates to the front of
the plenum base using two customer-supplied rack-mounting screws in the top and bottom screw holes
on the plenum base.
Step2 Lift the plenum base to the desired position in the rack. Align the screw holes on the adapter plates on
the plenum base with the mounting holes in the rack.
Step3 Attach the plenum base to the left and right rack rails using six customer-supplied rack-mounting screws,
three on each side. Torque the screws to the weight specified for your particular rack (Figure 2-7).
Note If the front to rear spacing for the cabinet is 18.4 inches, attach the rear adapter plates for
additional support (see Step7).