Cisco ONS 15454 Hardware Installation Manual page 65

Installing the ONS 15454 M12 (ANSI and ETSI) Shelf
Caution
Although the air filter can work with older fan-trays 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. You must
install the air filter with the metal bracing facing up with 15454-CC-FTA.
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. 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.
Procedure
Step 1
With the fan-tray assembly removed, place the ONS 15454 facedown on a flat surface.
Caution
Step 2 Locate the three screw holes that run along the left and right sides of the bottom of the shelf.
Step 3
Secure each bracket to the bottom of the shelf 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 (the top, if the ONS 15454 is facedown during installation).
The following figure 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 13: Installing the External Brackets
Although the air filter can work with older fan-trays 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.
You must install the air filter with the metal bracing facing up with 15454-CC-FTA.
DLP-G4 Install the External Brackets and Air Filter (ANSI Only)
Cisco ONS 15454 Hardware Installation Guide
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