Prohibited Mode Of Operation; Qualified Persons And Users; Shutdown Periods; Function Of The Ro Unit - BWT Bestaqua 22 HQ Instrucciones De Montaje

Please observe! Improper and faulty installation of the
RO unit can cause material damages.
installation regulations (e.g. DIN 1988, EN 1717), general
hygiene requirements and technical specifications in order to
protect the drinking water.
modifications are prohibited.
otherwise the warranty will lapse.
flexible tubes according DVGW W543
requirements only.
exposure to sunlight.
the RO unit.
or with feed water of an uncertain quality or origin.
food preparation, clean and/or flush
downstream users/machines before use.
Avoid unnecessarily long storage times of the equipment, in
order to prevent the risk of microbial contamination.
drinking water.
1.5.3 Permitted mode of operation
Attention: DANGER due to use deviating from the
intended purpose!
Any use beyond the intended purpose and/or any
different use of the device can lead to dangerous
situations.
Any claims because of damages resulting from any use
not corresponding to the intended purpose are
excluded.
Please observe:
NEVER operate the device with the housing covers
removed.
The complete power supply unit must be replaced in
the event of damage to the mains cable.
Observe! For the RO units operation a < 100μm particle
filter must always be provided by the customer.
Please use:
If needed, use protective clothing.
Do not use any aggressive cleaning agents!
microbial contaminated feed water
may not be used as
1.5.4 Qualified persons and users
Please observe:
Stipulate clear staff responsibilities for operation,
set-up, maintenance, repair work!
For installation, commissioning and maintenance/service work, it
is mandatory that it be effected by skilled and instructed person.
The user has to be trained by a BWT organisation or other
authorised person to operate the RO device.
Trained and instructed staff: Was instructed about all possible
dangers due to improper use.
Qualified persons: Are able to install, commission and service
an RO unit due to their qualification, knowledge and experience
in current regulations.

1.5.5 Shutdown periods

The BWT bestaqua 22,24,26 HQ unit is equipped with an pro-
grammable interval flush to prevent microbial contamination du-
ring long non-service periods. Nevertheless, it is recommended to
implement the following measures in case of unfavourable cases.
discarding the first 5 minutes of permeate after
each long idle periods of non use – e.g. weekends, holidays.
automatically, to prevent a microbial contamination.
longer down times with unplugged mains plug.

1.6 Function of the RO unit

A semi-permeable RO membrane separates feed water of a
high pressure (approx. 8 bar) into deionised (permeate) and
into waste water (concentrate) with a high salinity.
The relation between the produced permeate and feed water is
expressed as recovery or WCF (%). The RO is factory set with
an WCF value of approx. 40%. With an appropriate water
pre-treatment, the operator may install the optionally available
"high efficiency" WCF kit.
Optionally available:
Item No. 824039 for BWT bestaqua 22/24 HQ
Item No. 824040 for BWT bestaqua 26 HQ
Devices ON- and OFF switching point:
With pressure tank operation: between 2-4 bar adjustable
(Please observe the maximum pump pressure!)
Without pressure tank operation: switching point approx. 2 bar
When installing the optional "high-efficiency" WCF - Kit,
the enclosed operation manual must be observed!
EN
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