Electric Tankless Instant Water Heater - Installation Manual and User Guide
29
EN
Maintenance
6. Maintenance
Maintenance
This device does not require any maintenance by the user� Professional maintenance
may only be carried out by duly authorized technical staff� Maintenance, e�g� verifying
electrical safety, should only be undertaken by a qualified electrician, observing the rel-
evant regulations (IEEE, etc�)�
If faulty, please take follow the trouble shooting in page.30 to 32 to make the
diagnosis. If still have problem, never try to repair the hot water device yourself,
please contact the nearest service specialist for help.
Care
The enclosure can simply be cleaned with a damp cloth� Do not use aggressive cleaners
or cleaner’s with a scouring effect!
De-scaling
A service inspection should be performed by authorized and qualified technical staff
every year� De-scaling of the device during this inspection is highly recommended,
especially when you live in an area with hard water exceeding 12°dH (German stan-
dard of hardness)� Higher water temperature will intensify calcification� It is therefore
recommended to set the device at maximum 50°C in areas with extremely hard water
>16°dH�
Legislation prevention
Do not use heated water as drinking water�
After prolonged shutdown of the device for example due holiday, the device should be
fully heated up to the maximum temperature (tap at minimum flow) before re-using� It is
recommended to flush the pipes for one minute�
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