Ensure that the cable-management U feature device has the open end pointing outwards when you attach it
to the chassis.
Note
Step 9 Check that all the screws are securely tightened.
What to do next
Go to the Attaching a Chassis Ground Connection section for instructions about continuing the installation.
Guidelines for Rack Installation
The controller can be installed in the following rack types:
• Two-post rack, either 19 inch or 23 inch inner clearance (the width between the inner sides of the two
posts or rails) must be at least 19 inches (48.26 cm). Airflow through the chassis is from front to back.
• Four-post, 19 inch equipment rack. Inner clearance (the width between the inner sides of the two posts
or rails) must be at least 19 inches (48.26 cm). Airflow through the chassis is from front to back.
The controller can be installed with both front or rear rack-mount brackets.
When planning your rack installation, consider the following guidelines:
• The controller requires a minimum of 1.75 inches or 4.45 cm rack units of vertical rack space. Measure
the proposed rack location before mounting the chassis in the rack.
• Before using a particular rack, check for obstructions (such as a power strip) that could impair the
rack-mount installation. If a power strip does impair a rack-mount installation, remove the power strip
before installing the chassis, and then replace it after the chassis is installed.
• Allow sufficient clearance around the rack for maintenance. If the rack is mobile, you can push it back
near a wall or cabinet for normal operation and pull it out for maintenance (installing or moving cards,
connecting cables, or replacing or upgrading components).
• Maintain a minimum clearance of 3 inches on the front and back sides of the chassis for the cooling air
inlet and exhaust ports, respectively. Avoid placing the chassis in an overly congested rack or directly
next to another equipment rack; the heated exhaust air from other equipment can enter the inlet air vents
and cause an over temperature condition inside the controller.
• Always install heavier equipment in the lower half of a rack to maintain a low center of gravity to prevent
the rack from falling over.
• Install and use the cable-management brackets included with the controller to keep cables organized and
out of the way of cards and processors. Ensure that cables from other equipment already installed in the
rack do not impair access to the cards or require you to disconnect cables unnecessarily to perform
equipment maintenance or upgrades.
• Provide an adequate chassis ground (earth) connection for your controller chassis.
In addition to the preceding guidelines, review the precautions for avoiding excessive temperature conditions
in the Physical Characteristics section and the Site Environmental Requirements section.
Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllers Hardware Installation Guide
51
Installing the Controller
Guidelines for Rack Installation
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