Cisco ONS 15454 Series Procedure Manual page 100

Required Tools and Equipment (ETSI)
DLP-G4 Install the External Brackets and Air Filter (ANSI Only)
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
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 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.
With the fan-tray assembly removed, place the ONS 15454 facedown on a flat surface.
Step 1
Although the air filter can work with older fan trays if it is installed with either side facing up, Cisco
Caution
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.
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
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.
Cisco ONS 15454 DWDM Procedure Guide, Release 9.2
1-12
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. This task applies to the
ONS 15454 ANSI shelf only.
#2 Phillips Dynamometric screwdriver
Medium slot-head screwdriver
Small slot-head screwdriver
DLP-G3 Reverse the Mounting Bracket to Fit a 19-inch (482.6-mm) Rack
(ANSI Only), page
As needed
Onsite
None
illustrates bottom bracket installation. If you do not use the brackets, in the future you must
Chapter 1 Install the Cisco ONS 15454 Shelf Assembly
1-10, if applicable
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