Miele WT 945 S WPS - Manual (Page 63)

The plastic casing of the safety valve contains electrical components. The
Waterproof system must only be connected to its own stopcock. It must not be
connected to mixer taps or similar and must not be fitted in areas where there
is the risk of water or other liquids reaching it.
Do not get wet.
The protective sleeve of the hose
must not be damaged or kinked.
Installation and connection
63