13
13
GB
MH 3..7, MDH 3..7
Purging
To prevent damage to the appliance, the instantaneous water heater must be purged for air before using it
for the first time. Each time it is emptied (e.g. after work on the plumbing system, if there is a risk of frost or
following repair work), the appliance must be purged for air before it is used again.
1 Disconnect appliance from the mains by disactivating the fuses.
2 Next, open and close the hot water tap valve several times until no more air emerges from the pipe and
all air has been eliminated from the water heater (approx. 1 minute).
3 Only then should you reconnect the power supply to the unit.
Maintenance and cleaning
• Clean the heater and the taps only by wiping with a damp cloth. Do not use abrasive cleaners or solvents.
• Clean the jet regulator or the hand-shower regularly and replace as necessary.
• Dirt and scale deposited in the pipes and heater will affect the function of the heater. Typical indications
of this are a reduced rate of flow or noisy flow. In such cases, have the heater inspected by a technician
and, if necessary, have the filter in the cold-water inlet cleaned.
Recycling
This symbol on the products and/or accompanying documents means that used electri-
cal and electronic products should not be mixed with general household waste. For
proper treatment, recovery and recycling, please take these products to designated
collection points where they will be accepted on a free of charge basis. Alternatively, in
some countries you may be able to return your products to your local retailer upon the
purchase of an equivalent new product. Disposing of this product correctly will help to
save valuable resources and prevent any potential negative effects on human health and the environment
which could otherwise arise from inappropriate waste handling. Please contact your local authority for fur-
ther details of your nearest designated collection point. Penalties may be applicable for incorrect disposal of
this waste, in accordance with national legislation. If you are a business user and you wish to discard electri-
cal and electronic equipment, please contact your dealer or supplier for further information. This symbol is
only valid in the European Union.
