Prohibited Mode Of Operation; Qualified Persons And Users; Shutdown Periods; Function Of The Ro Unit - BWT bestaqua 14 Einbau- Und Bedienungsanleitung

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.
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 Prohibited 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.
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 14, 18 unit is equipped with an program-
mable interval flush to prevent microbial contamination during
long non-service periods. Nevertheless, it is recommended to
implement the following measures in case of unfavourable cases.
in the inlet of the reverse osmosis in case of longer breaks in
operation.
discarding the first 30 minutes of permeate after
each long idle periods of non use – e.g. weekends, holidays.
especially in unfavourable cases, e.g. longer down times in
warm installation rooms.

1.6 Function of the RO unit

A semi-permeable RO membrane separates feed water of a high
pressure (8...13 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 unit can be operated either (online) (directly connected to
the user) or alternatively connected with the universal level con-
trol BWT levelmeter (Order No. 812 854) to upfill the produced
permeate into an atmospheric tank.
An integrated mixing valve enables blending of permeate and
feed water in a precise manner to obtain a required product
water conductivity depending on the application. Please take the
recommended setting, see Part 3.10 "Settings of the water quality
with the blending valve".
EN
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