CommScope ION-M7P, Руководство пользователя

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5 Maintenance
Page 43
5.3. CLEANING THE HEAT SINK
To avoid a malfunctioning of the Remote Unit, the heat sink should be cleaned in
case of pollution. In order to prevent any damage, proceed as explained in the
following.
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Note: Read the health and safety warnings in chapter 1.2 Health and
Safety Warnings as well as the instructions in chapter 5.1 General
before starting with the replacement procedure. Then, proceed as
follows:
1. Switch off the Remote Unit. For the following procedure ensure that power supply
connector has been disconnected before and that the fans have stopped rotating!
2. Before any cleaning action,
remove the fan guard and the fan unit from the
Remote Unit as described in the previous chapter 5.2 Replacing the Fan Unit .
3. Clean the ribs of the heat sink (see figure 5-1 Fan unit and heat sink ) very
carefully with a soft brush (not metallic!). Take care that the material is not
scratched or damaged !
4. If necessary, use compressed air (max. 5 bar) to blow out the heat sink from front
to rear side.
)
Note: NEVER blow out the fan unit with compressed air! This would
cause permanent damage to the unit.
5. In case the dirt cannot be blown out completely from the heat sink and parts of it,
still stick to the ribs, clean the parts concerned carefully from the front with the
soft brush. Take care that the material is not scratched or damaged .
6. After cleaning the heat sink, mount the fan unit and the fan guard again according
to chapter 5.2 Replacing the Fan Unit . Then, reconnect mains power and power
up the unit.