Preconditions For The Installation; Positioning Of The Ro/Installation Requirements; Feed Water Requirements; Setting The Correct Operating Pressure - BWT bestaqua 22 HQ Notice De Montage Et D'utilisation

EN
After the ending of the last pure water demand the permeate
back pressure increases as long as the presetted stop pressure
is reached. As the turn-off pressure is reached and after rinsing
the membranes, the device assumes the "Ready" stand-by mode.
If a failure occurs, the display shows the error code and the status
alarm LED turns into red. If required, the device deactivates itself
automatically. Part 4.2 contains information concerning possible
error codes displays and their causes as well as "troubleshoo-
ting".

1.7 Preconditions for the installation

1.7.1 Positioning of the RO/installation requirements

When installing the device, select a location where the device
can easily be connected to the water supply network.
A connection to the sewage system and a separate mains socket
(230V, 50Hz) must be nearby. Please connect the PE mains plug
only to a grounded socket.
The rated mains power (see technical data) and the requisite
feed water pressure must be present at all times.
If a pump station is needed for draining, please consider
corrosion-resistant materials.
National guidelines and regulations:
Observe all applicable installation regulations, general guidelines,
hygiene requirements, and technical specifications.
Frost protection and ambient temperature:
The installation site must be dry and free of frost and ensure the
protection of the unit against chemicals, paint, solvents and fumes.
If the mains water is treated with oxidising disinfectants (chlorine,
chlorine dioxide, etc.), is necessarily an activated carbon filter
to be placed in front of the unit. A < 100μm particle filter must
always be provided by the customer.
Further pre-treatment is to be determined by the BWT service
in dependence on the local feed water quality.
Quality of the pipeline supply:
Please observe: Only corrosion-resistant material must
be used in the permeate area.
Electrical interference:
The emission of interference (voltage peaks, high-frequency
electromagnetic fields, interference voltages, voltage fluctuations
...) by surrounding electrical systems must not exceed the docu-
mented maximum values specified in the standard EN 61000-6-4.

1.7.2 Feed water requirements

The RO unit must only be fed with cold drinking water (maximum
30°C), which meets the official requirements for potable water
and covers the specification in table 6.1.
32
Data analysis of the feed water in your area:
Every deviation from the intended purpose, e.g. deionisation of
non drinking water feed water can led to irreversible damages too
human and equipment (e.g. undesired microbial contamination
of the RO unit).
Warning: Caused by unsuitable water quality.
must not be exceeded.
water might cause danger to unwanted sedimentation
on the membranes. That influences negatively quality
and performance.

1.7.3 Setting the correct operating pressure

A minimum operating pressure is required for the optimum
functioning of the unit. Besides, the water pressure should not
exceed the maximum permissible pressure.
Attention: The feed water inlet pressure must be
between 2.0 and 4.0 bar directly guided to the RO.
Observe: The operation of the RO unit with a pump
pressure of over 8.6bar does not permissible (otherwise
it could appear irreversible damage to the membrane).
We recommend setting the pump pressure in each ope-
rating mode to approx 8.1bar!
is recommended to install a shut-off valve at the inlet side of
the unit, so that the feed water supply may be interrupted for
service purposes.
to avoid unreliable operation. An undersized inlet causes the
danger of an interruption of the operation due to insufficient
water pressure or insufficient flow rate, e.g. when rinsing the
membranes.
negatively.

2.1 Preparation for assembly

Unpacking of the RO unit:
Remove the device from its packaging and check the delivery
to see that everything is there and that no damage was caused
during transport.
If the pressure is more than 4.0
bar, install a pressure reducing
valve.
If the pressure is lower than 2.0
bar, a pressure booster system
must be installed upstream.
of at least DN10