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INSTALLATION
Maintenance
14. Maintenance
WARNING Electrocution
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
f Dismantle the appliance for maintenance work.
14.1 Draining the appliance
WARNING Burns
Hot water may escape during the draining process.
f Drain the appliance via its connectors.
14.2 Opening the appliance
85
°C
35
55
65
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f Pull off the temperature selector and the limiting ring.
f Remove the screws from underneath the temperature
selector.
f Open the appliance cover by lowering the bolt screws in-
wards and pivot the cover upwards, then remove it.
14.3 Descaling the appliance
!
Material losses
Never treat the cylinder surface with descaling agents.
f Remove the flanged immersion heater.
f Carefully tap the heating element to remove large limescale
deposits.
f Immerse the heating element up to the flange plate in desca-
ling agent.
14.4 Checking the earth conductor
f Pull off the temperature selector and the limiting ring.
f Check the earth conductor (in Germany, e.g. DGUV3) across a
temperature controller fixing screw and the earth conductor
contact of the power cable.
14.5 Replacing the power cable
The power cable must only be replaced by a qualified contractor
with an original spare part. Alternatively, the H05VV-F3x1.0 cable
may be used.
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f Route the power cable along the cable guide.
14.6 Positioning the temperature sensor in its
protective pipe
f When replacing the temperature controller, guide the tem-
perature sensor into its protective pipe.
f Secure the temperature sensor in place below the earthed
plug.
26�02�06�0219
185
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