Removing And Replacing The Filter Element; Figure 6-5 Cooling Unit Module And Filter Element - Hatteras HN4000 Hardware Installation Manual

6.2.2 Removing and Replacing the Filter Element

Under normal conditions, replace the filter element every 3 months. In dusty conditions,
replace the filter every month.
For Outside Plant (OSP) locations where a closed-loop/filtered cooling system is in place (such as
Note
an RT or CEV), Hatteras Networks recommends that the filter element not be installed in the
HN4000 Cooling Module.
Figure 6‐4 shows the filter element's location in the Cooling Unit. The filter is held in place with
eight metal locating tabs.
Filter
Element
Figure 6-5 Cooling Unit Module and Filter Element
Take the following steps to replace the filter.
Step 1. Remove the Cooling Unit from the chassis.
Step 2. Grasp the filter element and pull it out of the Cooling Unit.
Step 3. Place the new filter element into the Cooling Unit, ensuring that the element is seated
beneath the eight metal locating tabs.
End of Procedure
920550-5020 Rev 14
Cooling Unit Module Replacement
HN4000 Hardware Installation Guide
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