17-4
Cisco ONS 15454 Procedure Guide, R5.0
March 2005
Chapter 17 DLPs A1 to A99
DLP-A4 Install the External Brackets and Air Filter
DLP-A4 Install the External Brackets and Air Filter
Note If you choose not to install the brackets, install the air filter by sliding it into the compartment at the
bottom of the shelf assembly. Each time you remove and reinstall the air filter in the future, you must
first remove the fan-tray assembly. Do not install an air filter in both filter locations on any shelf
assembly.
Step 1 With the fan-tray assembly removed, place the ONS 15454 facedown on a flat surface.
Note Although the filter will work if it is installed with either side facing up, Cisco recommends that
you install it with the metal bracing facing up to preserve the surface of the filter.
Step 2 Locate the three screw holes that run along the left and right sides of the bottom of the shelf assembly.
Step 3 Secure each bracket to the bottom of the shelf assembly using the screws (48-0003) provided in the
backplane standoff kit (53-0795-XX).
Each bracket has a filter stopper and a flange on one end. Make sure to attach the brackets with the
stoppers and flanges facing the rear of the shelf assembly (the top, if the ONS 15454 is facedown during
installation).
Figure 17-2 illustrates bottom bracket installation. If you do not use the brackets, in the future you must
remove the fan-tray assembly before removing the air filter. The brackets enable you to clean and replace
the air filter without removing the fan-tray assembly.
Purpose This task installs the external brackets and air filter on the bottom of the
shelf rather than below the fan-tray assembly. Installing the external
brackets and air filter on the bottom of the shelf enables access to the air
filter without removing the fan-tray assembly.
Tools/Equipment #2 Phillips screwdriver
Medium slot-head screwdriver
Small slot-head screwdriver
Prerequisite Procedures DLP-A3 Reverse the Mounting Bracket to Fit a 19-inch (482.6 mm) Rack,
page 17-2, if applicable
Required/As Needed As needed
Onsite/Remote Onsite
Security Level None
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