Maintenance
Maintenance
This device does not require any maintenance by the user. Professional
maintenance may only be carried out by authorized technical staff.
Maintenance, e.g. verifying electrical safety, should only be undertaken
by a qualified electrician, observing the relevant regulations (IEC, UL,
etc.).
Care
The enclosure can simply be cleaned with a damp cloth. Do not use
harsh chemicals or abrasives!
Descaling
A service inspection should be performed by authorized and qualified
technical staff every year. Descaling of the device during this inspection
is highly recommended, especially when you live in an area with hard
water exceeding 12 dH. Higher water temperature will intensify calcifica-
tion. It is therefore recommended to set the device at maximum
131
°F(
55
°C
).
Legionella prevention
Do not use heater water as drinking water.
After prolonged shutdown of the device, for example while on vaca-
tion, the device should be fully heated up to the maximum tempera-
ture (tap at minimum flow) before resuing. It is recommended to flush
the pipes for one minute.
If faulty, please take follow the trouble shooting in page.22 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.
21
Electric tankless water heater - Installation Maunal and User Guide
TM
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