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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 1 Install the Shelf and Common Control Cards
DLP-G4 Install the External Brackets and Air Filter (ANSI Only)
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 1-2 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.
Figure 1-2 Installing the External Brackets
Step 4 Slide the air filter into the shelf assembly.
Step 5 Return to your originating procedure (NTP).
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