The Water Protection System; Connection To The Water Supply - Miele WWD 120 Operating Instructions Manual

The water protection system

The Miele water protection system
protects all parts of the washing
machine from water damage.
The system consists of three main
components:
- the inlet hose
- the electronic unit and drainage and
overflow protection
- the drain hose
Inlet hose
- Protection against bursting
The inlet hose is tested to withstand
pressure of at least 7,000 kPa.
Electronic unit and washing machine
housing
- Sump
Any leaking water is collected in a
sump in the base of the machine. A
float switches off the water inlet
valves, preventing any more water
from flowing into the machine and
water in the suds container is
pumped away.
- Overflow protection
This prevents the washing machine
taking in too much water. If the water
level exceeds a certain level, the
drain pump switches in and pumps
the excess water away.
Drain hose
The drain hose is protected by a
ventilation system which prevents the
washing machine from being emptied
completely.

Connection to the water supply

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Health risk and risk of damage
due to contaminated incoming water.
The quality of the incoming water
must correspond to the drinking
water specification of the country in
which the washing machine is being
operated.
Always connect the washing
machine to the mains water supply.
The washing machine should be
connected to the mains water supply in
accordance with current local and
national safety regulations. The German
authorities do not require it to have a
non-return valve as the washing
machine has been designed to comply
with DIN regulations.
The water connection pressure needs
to be between 100 kPa and 1000 kPa. If
the water connection pressure exceeds
1000 kPa, a pressure reducing valve
must be installed.
A stopcock with a ¾ inch threaded
union is required for the connection. If
this is not available, only a qualified
installer may connect the washing
machine to the mains water supply.
The connection point is subject to
mains water pressure.
Turn on the stopcock slowly and
check for leaks. Correct the position
of the washer and the threaded
union if necessary.
The washing machine is not suitable
for connection to a hot water supply.
The washing machine must not be
connected to a hot water supply.
Installation
65