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LWZ 170 E PLUS / LWZ 370 PLUS |
23
INSTALLATION
Maintenance
13. Maintenance
WARNING Electrocution
In the event of damage to the power cable this must
always be replaced by a qualified contractor authorised
by the manufacturer, using original spare parts.
Maintenance by the qualified contractor includes the cleaning of
the cross-countercurrent heat exchanger and the fans.
Subject to runtime, this maintenance work should be carried out
every 3 years.
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Switch off the appliance by pressing the minus key for
5 seconds.
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Disconnect the power supply.
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Open the filter door.
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Extract the filters. Make a note of how the filters were fitted.
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004
2
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Remove the front cover.
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5�
004
3
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Carefully remove the heat exchanger from the appliance.
Avoid damaging the foam parts in the appliance.
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5�
004
7
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Use a commercially available vacuum cleaner to remove dust
and other loose dirt particles from the intake and discharge
surfaces.
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If required, clean the heat exchanger with warm water
(max. 55 °C) and a commercially available detergent. Never
use solvents.
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Afterwards flush the heat exchanger with water.
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Remove the plug-in connections from the back of the display
cover.
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5�
004
4
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Undo both screws securing the display cover to the
appliance.
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5�
004
6
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Remove the display cover.
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Disconnect the 4 pressure hoses and 3 plug-in connections
from the PCB.
