Replacing Cooling Fan Filters - Northern Telecom DMS-100 Series Maintenance Procedure

Task
The fan filters for the Service Peripheral Module require regular
replacement.
The filter is a disposable unit consisting of the filter material and frame.
Used filters should be handled gently during removal to prevent dust
escaping into the air, and should be removed from the Equipment room
immediately.
The tray which holds the filter is located outside of and below the fan
enclosure so that the filter can be replaced more quickly and safely.
Interval
The filter should be replaced once every three months.
Action
The following flowchart is a summary of this procedure. Use the instructions
in the step-action table that follows the flowchart to perform the procedures.
Routine maintenance procedures Routine maintenance procedures 1-9

Replacing cooling fan filters

Replacing cooling fan filters
DMS VoiceMail Routine Maintenance Procedures SPM 02
1-9