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Manual ION-M7P-7P-85P-19P
MF0145A4A.doc
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.
Note:
Read the health and safety warnings in section 1.2 Health and
Safety Warnings as well as the instructions in section 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 section
.
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 f
rom
front to rear side.
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
. Then, reconnect mains power and power
up the unit.
