Installation Suggestion; Operating The Reverse Osmosis Unit; Switching On The Ro Device; Setting The Water Quality Using The Blending Function - BWT bestaqua 14ROC Einbau- Und Bedienungsanleitung

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DANGER!
Always disconnect the voltage supply of the unit by removing the plug or fuse if hard wired
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during any maintenance and electrical work.

Installation suggestion:

1 BWT bestaqua 14ROC Reverse Osmosis
2 Particle pre-filter (not included in delivery but recommended to protect the RO membrane)
3 Permeate connection 5/16" push-fit
4 Concentrate connection 5/16" (for connection to the drain)
5 Feedwater inlet 3/4"
6 Alternative position for the drain connection
7 Water tap
8 Observe: 7" installation height
9 PE mains plug type IEC 320
10 Hot feed water
11 Cold feed water
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CAUTION!
The RO device must be operated using only cold water that meets the legal requirements for
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potable water.

3 Operating the reverse osmosis unit

3.1

Switching on the RO device

The RO device must be connected to the hoses and the electrical socket.
Use the device switch (situated on the rear of the device) to switch on the BWT bestaqua
14ROC. A green LED indicates that the RO unit is switched on.

3.2 Setting the water quality using the blending function

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ATTENTION!
The standard setting on the filter head is 0, i.e. no blending.
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Integrated blending can be used to increase the conductivity of the permeate by mixing it with
feedwater. Whether this is necessary depends on the end application. If needed, the blending
setting (bypass mixing of feedwater) can be set to 1, 2 or 3.
The blending head is situated underneath the top cover plate. Press the blue button to facilitate
changing of the bypass setting. Turn the blending head while keeping the blue button pressed to
change the setting to 1, 2 or 3. Higher settings (1, 2 and 3) correspond to higher proportions of
feedwater (25%, 50% and 75%) being blended in.
 NOTE!
Blending allows untreated water into the permeate water.
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3.3

Hygiene concept and stoppages

There are two hygiene concepts designed to ensure the maximum service life of the membranes.
Stop delay: After each production run, the pump continues to run for approx. 10 s to rinse the
membrane with tap water. This ensures that the conductivity on the concentrate side of the
membrane falls back down to the inlet conductivity. This avoids stagnation peaks and redu-
ces calcification of the membrane. The volume of waste water generated by this process is
approx. 330 ml.
Interval flushing: If the device is not operated for extended periods (at weekends etc.),
the membrane is automatically rinsed every three hours. The inlet solenoid valve opens for
approx. 30 s and the membrane is rinsed with pipeline pressure. Depending on the pipeline
pressure, the volume of waste water generated by this process is between 300 and 700 ml.
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