Maintenance; Draining The Appliance; Opening The Appliance; Descaling The Appliance - STIEBEL ELTRON SNU 10 SLi Operation And Installation Manual

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

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.
18 | SNU 10 SLi | SNU 10 SL GB | SNU 10 SLi AUS

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.
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.
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