BWT bestaqua 14ROC User manual

BWT bestaqua 14ROC
Installation and operating instructions
Filter system for optimising drinking water
Installation and operating instructions
Europe’s No. 1 in Water Technology
EN

Copyright © 2019 BWT water + more GmbH. Alle Rechte vorbehalten. All rights reserved.
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zastrzeżone. Valamennyi jog fenntartva. Все права защищены.
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Table of Contents
1 Introduction and safety................................................................................................................ 4
1.1 Abbreviations and subject index .......................................................................................
1.2 Scope of delivery.................................................................................................................
1.3 Manufacturer's address.......................................................................................................
1.4 General information.............................................................................................................
1.4.1 Reading the installation and operating manual (IOM) ...............................................
1.4.2 Warranty and disclaimer...............................................................................................
1.4.3 Responsibilities of the operator...................................................................................
1.4.4 Licensing conditions .....................................................................................................
1.4.5 Description of symbols listed.......................................................................................
1.5 Operater and safety notes..................................................................................................
1.5.1 Proper use ......................................................................................................................
1.5.2 Correct operating method ...........................................................................................
1.6 Description of process .......................................................................................................
1.7 Installation requirements ...................................................................................................
1.7.1 Site installation requirements......................................................................................
1.7.2 Feedwater requirements .............................................................................................
1.7.3 Operating pressure ......................................................................................................
2 Installation and assembly.............................................................................................................
3 Operating the reverse osmosis unit...........................................................................................
3.1 Switching on the RO device..............................................................................................
3.2 Setting the water quality using the blending function...................................................
3.3 Hygiene concept and stoppages......................................................................................
3.4 Removing/replacing the RO cartridge..............................................................................
3.5 Instructions for installing and operating the BWT bestaqua 14ROC app.......................
3.5.1 Installing the app...........................................................................................................
3.5.2 Connecting your smartphone with the ROC using the app.....................................
3.5.3 Using the app ...............................................................................................................
3.5.4 Settings in the service menu .......................................................................................
3.5.5 Fault messages ..............................................................................................................
4 Troubleshooting ...........................................................................................................................
4.1 Overview of the status and alert LED ................................................................................
4.2 Fault correction....................................................................................................................
5 Repairs and maintenance ............................................................................................................
5.1 Maintenance and wearing parts........................................................................................
5.2 Cleaning ..............................................................................................................................
5.3 RO cartridge replacement.................................................................................................
5.4 Disposal ...............................................................................................................................
5.5 Standard IEC 60335–1.........................................................................................................
5.6 Technical data BWT bestaqua 14ROC ..............................................................................
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1 Introduction and safety
1.1 Abbreviations and subject index
Softening: The water purification process removes the hardness from raw water. Hardness
constituents are the portion of calcium and magnesium ions in the water.
Raw water: Raw water (usually untreated drinking water) must be pre-treated (usually softening) before it can be
used in the RO device.
RO: reverse osmosis.
Permeate: “Pure water” that has been largely desalinated by reverse osmosis. The charac-
teristic value is the electric conductivity in S/cm or TDS.
Concentrate: Waste water containing the salts and minerals that have been removed from
the raw water.
Membrane: The “filter” of the device which is capable of desalinating the raw water by
high pressure and flow.
TDS: Total Dissolved Solids: the total amount of dissolved salts, measured in mg/l.
SDI: Silt Density Index: A measure of the blockage tendency of water.
Electrical con-
ductivity The smaller the value of the electrical conductivity measured (in μS/cm) by the RO
device, the lower the salt concentration in the permeate product.
IOM: Installation and Operating Manual
Permeate yield
(WCF):The ratio between the purified water produced (permeate) and the amount of feed
water (soft water) required to do so is expressed as permeate yield (WCF) or “Water
Conversion Factor”.
Bypass setting
with cold drin-
king water:
Using the bypass setting on the blue regulation/mixing head (at the top of the device
underneath the service cover), a set proportion of the unfiltered raw water can be mixed
into the purified water. See paragraph 3.2 for the suitable bypass settings (1, 2 or
3) for the various household applications.
1.2 Scope of delivery
The reverse osmosis device is supplied with the following:
1 RO cartridge
2 Device ON/OFF switch
3 Permeate connection 5/16”
4 Concentrate connection 5/16”
5 Feedwater connection ¾” (for 6 mm hose)
6 Top service cover for blending valve (initial setting “0”)
7 Bottom service cover for attaching/detaching the RO cartridge
Optionally available:
1b RO replacement cartridge (item no. 812835)
1.3 Manufacturer's address
BWT water + more GmbH
Walter-Simmer-Straße 4
5310 Mondsee, Austria
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
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1.4 General information
This installation and operating manual (IOM) contains important instructions for safe and efficient
use of the reverse osmosis device BWT bestaqua 14ROC. This installation and operating manual
(IOM) is part of the device and must be constantly available at the place of operation for all staff
members assigned.
1.4.1 Reading the installation and operating manual (IOM)
The staff must have read and understood this IOM prior to any work being carried out. A basic
precondition for safe working is the adherence to all stated safety and operating instructions.
In addition, the local accident prevention provisions and the general safety provisions effective
at the place of operation are applicable. The illustrations in these instructions are intended to
provide a basic understanding and may deviate from the actual design of the device. Justified
claims cannot be derived from the same.
1.4.2 Warranty and disclaimer
ATTENTION!
fThe information and instructions contained in this Installation and Operating Manual are com-
piled based on current standards and regulations, the state of the technology, and our many
years of experience and observation.
The warranty is void in any of the following cases:
Failure to follow the provisions and information in this IOM
Improper use
Improper or faulty installation
Improper start-up, operation or maintenance
Use of non-approved components or non-original parts
Neglecting to perform the required service and replacement tasks
Technical modifications: damage, faults and stoppages resulting from unauthorised alterations
1.4.3 Responsibilities of the operator
The installation and operating manual (IOM) must be easily accessible and kept in the
immediate vicinity of the device.
The device must be operated in a technically faultless and operationally safe condition only.
The provisions in the IOM are to be followed absolutely.
1.4.4 Licensing conditions
This IOM is protected by copyright law. Surrendering the manual to any third party, duplication
of any kind and form – also in excerpts – as well as the utilisation and/or communication of
the content are not permitted without the written consent of the manufacturer. Infringements
obligate to pay compensation for damages. Further claims are reserved.
1.4.5 Description of symbols listed
HDANGER!
fElectric current or voltage! Always consult a qualified electrician when working on places
denoted by this symbol.
ICAUTION!
fDetails to avoid personal injury or extensive damage to property.
 ATTENTION!
fUnderlines useful recommendations and information for an efficient operation free of any
interruptions.
NOTE!
fAdditional operator information.

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1.5 Operater and safety notes
This section gives an overview of all operational and safety aspects important for ensuring
safe and fault-free operation. Despite all possible precautionary measures, some residual risk
remains with any product, especially if it is used incorrectly. Warranty claims are void unless the
provisions in this IOM are observed and followed.
1.5.1 Proper use
This device is for desalination of drinking-quality water at up to 30 °C and 0.4 MPa (4 bar). It can
be used either with or without an atmospheric pressure tank (application dependent). Consult
your dealer about installation reccomendations.
ATTENTION!
fThe inflow water must not exceed the limit values given in the technical data or the calcium
solubility limit in paragraph 5.6!
fThe device shall only be used for its intended purpose as designed and as described here in
this manual. Any other use is considered “improper”.
ICAUTION!
fThe RO unit must be fed with cold water in drinking water quality.
fClaims for damages resulting from improper use are void.
1.5.2 Correct operating method
ATTENTION!
fTo protect the drinking water, observe the country-specific guidelines for drinking water
installations in any work on the RO device.
fIncorrect installation of the RO device may cause damage.
The device must be disconnected prior to performing any maintenance work on the drinking
water supply. Rinse the water pipe sufficiently before reconnecting the device.
Before installation, disconnect the device and any terminal devices from the power (pull the
mains plug).
ICAUTION!
fIn some contries the desalinated water (permeate) produced must not be used for drinking.
Observe country-specific regulations.
Observe any country-specific installation regulations (such as DIN 1988, EN 1717, ), general
hygienic conditions and technical data for protecting the drinking water.
Unauthorised modifications to the RO device and technical alterations are not permitted.
Avoid mechanical damage to the device which may void the warranty.
Install a stop valve upstream of the RO device.
Connect the device only using flexible hoses that conform to local plumbing regulations (e.g.
DVGW W 543).
The device should not be installed in the vicinity of heat sources or open flames.
The RO device should not come into contact with chemicals, solvents, or vapours.
The installation site must be free of frost and protected from direct sunlight.
The device is not to be operated with feedwater that is microbially unsafe or whose origin is
of unknown quality.
When the RO device is used for food applications, all permeate lines must be cleaned and
rinsed thoroughly before use.
Avoid leaving the device in storage for a long time in order to reduce the risk of idle
contamination. The system must be cleaned and sanitised before use.

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1.6 Description of process
The semi-permeable reverse osmosis membrane separates the raw water, which is supplied
under high pressure (approx. 8 bar), into desalinated purified water (permeate) and the salty
waste water (concentrate).
The percentage ratio between the permeate produced and the amount of raw water used is
called the WCF yield (%). The RO device is factory-configured for a WCF of approximately 50%.
On/off control points:
Automatic RO operation via pressure switch: 1.5 and 4.0 bar.
Note that pressure fluctuations may lead to the device switching off.
Once the connected consumer starts drawing purified water, the actual pressure drops below
the set “RO starting pressure” and the RO unit starts producing water automatically.
1.7 Installation requirements
1.7.1 Site installation requirements
Choose a place to set up the device that allows simple connection to the water supply network.
There should be a wastewater connection and a separate mains connection (100–230 V, 50 Hz) in
the immediate vicinity. The device must be electrically connected to a grounded mains socket.
The voltage supply and the required feedwater pressure must be stable.
National guidelines and regulations:
Please observe the general standards, guidelines and technical data.
Frost protection and pre-treated water:
The installation site must be free of frost and kept free of chemicals, paint, solvents and fumes.
If the municipal water supply is treated with oxidising disinfectants (such as chlorine, chlorine
dioxide, or similar), then an activated carbon filter must be installed upstream of the device and
changed regularly. Further pre-treatment may be necessary depending on the feedwater quality.
Quality of the supply pipeline:
ATTENTION!
fAll components in contact with permeate water should be corrosion resistant.
Electrical interference:
Interference emissions (voltage peaks, high-frequency electromagnetic fields, spurious and
voltage oscillations, etc.) of the surrounding electrical installation must not exceed the maximum
values set in the standard EN 61000–6–4.
1.7.2 Feedwater requirements
The water fed into the device must be cold water that conforms to the statutory drinking water
requirements and the water quality requirements in table 5.6.
Analysis of the local feedwater:
Any deviation from proper use, such as desalination of feedwater of impermissible quality
(non-drinking water), may result in irreversible damage to health or property (e.g. microbial
contamination of the RO device).
1.7.3 Operating pressure
For optimal functioning, the device requires a minimum operating pressure. In addition, the
water pressure should not exceed the maximum permissible pressure.
ATTENTION!
fThe feedwater pressure must always be between 0.15 and 0.4 MPa (1.5 and 4.0 bar) as
measured directly at the RO unit.

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ICAUTION!
fIf the pressure exceeds 0.4 MPa (4.0 bar), then a pressure reducing valve must be installed.
fIf the pressure drops below 0.15 MPa (1.5 bar), then a pressure booster system must be
installed upstream.
We recommend installing a shut off valve at the inlet side of the device to enable the feed-
water flow to be interrupted for service purposes.
Installation should use at least DN 10. Smaller feed pipes may result in operational
stoppage due to insufficient water pressure or flow (e.g. when flushing the reverse osmosis
membranes).
Installing a pressure reducer may reduce the flow rate.
2 Installation and assembly
Unpacking the RO device:
Remove the device from the packaging and check that all components are included and
undamaged.
Hydraulic installation:
ATTENTION!
fObserve the general installation regulations for creating water installations and the general
hygiene conditions.
Read the technical data, operating notes, and safety notes first and observe them during
installation.
Use only flexible hoses approved under DVGW W 543 to connect the device.
Observe the installation dimensions and bend radii when installing accessories (such as hoses,
connection sets, etc.).
The device bestaqua 14ROC is to be set up and operated with installed magnet plates.
The device may not be hard plumbed to the water supply network, e.g. copper or brass.
Connecting to the water pipe:
The hoses of the device are to be connected free of tension.
Verify that connections are watertight.
The concentrate line is to be connected to the wastewater connection with an approved air
gap. Check that flexible hoses are free of any restrictions. During installation, ensure that the
concentrate and permeate lines are correctly connected.
NOTE!
fBefore using the RO unit, we recommend checking the water pre-treatment (e.g. in-house
softener, central water processing of waterworks). This measure is necessary to improve the
efficiency and service life of your RO membrane.
fPlease discard the permeate produced during the first ten minutes after installation, initial
start-up, or membrane change.
fReduction of the temperature by 1 °C results in a reduction of the permeate output of the
membranes by approximately 3 %.
Connect the RO device to a grounded mains socket (100–230 V, 50 Hz).
Please observe the provisions in the operating manual of the external pre-filter used.
As a general rule, we recommend using softened water to extend the service life and
operational safety of the RO membrane.
Connect all hoses and check for water leaks.
Open the inlet valve for the feedwater supply.
Connect the mains plug (230 V/50 Hz) to the power supply.

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HDANGER!
fAlways disconnect the voltage supply of the unit by removing the plug or fuse if hard wired
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
ICAUTION!
fThe RO device must be operated using only cold water that meets the legal requirements for
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
ATTENTION!
fThe standard setting on the filter head is 0, i.e. no blending.
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!
fBlending allows untreated water into the permeate water.
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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If the RO is out of service for a longer period of time (for example, during holidays), it is
necessary to rinse the device for five minutes. The flush water must be discarded to drain.
NOTE!
fPlease observe the provisions in the operating manual of the external pre-filter used.
3.4 Removing/replacing the RO cartridge
Before removing the RO cartridge, shut off the feedwater supply. In addition, disconnect the
mains plug and ensure that the “Power-On LED“ is no longer illuminated.
Please unscrew the old RO cartridge by tipping the RO device back slightly and then
unscrewing the old, depleted RO cartridge by turning it anti-clockwise.
Then screw in the new RO cartridge. Ensure that the opening in the tip of the RO cartridge is
fitted precisely concentrically to the feed plug.
The RO cartridge should normally be replaced every 12 months, but the correct interval may
vary depending on the raw water quality.
NOTE!
fAfter each RO cartridge change, run the device for 10 minutes to rinse the new cartridge.
Please note the internal pre-pressure setting of 2.0 bar.
3.5 Instructions for installing and operating the BWT bestaqua 14ROC app
3.5.1 Installing the app
If you have not yet installed the BWT bestaqua 14ROC app, please scan the QR code below. This
will take you to the website from which you can download the app.
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3.5.2 Connecting your smartphone with the ROC using the app
bestaqua
14ROC
Connecting ...
bestaqua 14ROC
ready
Select the device from the
list (in this case: 14ROC with the ID number
A4:34:F1:AA:F2:00). If multiple devices
are present, select the unit num-
ber which corresponds with the
14ROC serial number.
Please attach a screenshot to the
log!
Once the RO unit is selected, the
screen below will be displayed.
The LED on the front of the
bestaqua 14ROC will light up blue.
Once a connection to the device
has been established, the screen
below will be displayed. The
device is ready for permeate pro-
duction. The app shows “ready”.
3.5.3 Using the app
bestaqua 14ROC
working
bestaqua 14ROC
CONDUCTIVITY
012 uS
INLET WATER
01560 liter
OUTLET WATER
03340 liter
OUTLET PRESS
2.5
bar
H
2
0 TEMP
18
C°
PUMP ON
0016
hours
OUTLET FLOW
095
liter/hour
DAYS
186
back
info
bestaqua 14ROC
working
bestaqua 14ROC
rinsing
When the consumer is draw-
ing permeate, the app shows
the status “working" with a
blue spinning circle. The reverse
osmosis unit now produces
permeate water.
During operation, this screen can
be displayed to the customer
when the “working” button
is pressed. The system data is
displayed as follows.
fConductivity in TDS or S
(configurable in the menu)
fTemperature of the feed-
water
fOutput pressure in bar
fRunning time in days
fAmount of water at the
infeed
fPump running time in hours
fAmount of permeate pro-
duced
fPermeate flow rate
After the consumer stops drawing
permeate or if the atmospheric
tank is full, the system flushes
the membranes with raw water
(approx. the bed volume of the cartridge). If no
permeate is drawn, the system
flushes with feedwater every
3 hours.

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bestaqua 14ROC
xxxxxx
bestaqua 14ROC
working
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ee
vv
a
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9000 LITERS
11000 LITERS
13000 LITERS
8000 LITERS
10000 LITERS
12000 LITERS
OUTLET WATER SERVICE
LOW WCF ALARM
30% 40%
TECHNICAL SERVICE MENU
The following message in the
main menu indicates that the unit
needs servicing.
The procedure for resetting the
service indicator is described in
Section 3.4.4.
If a YELLOW CIRCLE is shown while permeate is being drawn, this
means that the WCF1ALERT has been triggered. This means the
WCF is lower than 30 or 40 percent. The WCF warning value can be
configured in the service menu.
3.5.4 Settings in the service menu
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5
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3
6
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4
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DIGIT PASSWORD
XXXXXXXXXX
TECHNICAL SERVICE MENU
SERVICE DAYS
INLET WATER SERVICE
365 DAYS
20000 LITERS
40000 LITERS
60000 LITERS
180 DAYS
10000 LITERS
30000 LITERS
50000 LITERS
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a
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a
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a
s
a
s
9000 LITERS
11000 LITERS
13000 LITERS
8000 LITERS
10000 LITERS
12000 LITERS
OUTLET WATER SERVICE
LOW WCF ALARM
30% 40%
TECHNICAL SERVICE MENU
Enter the password to access the
service menu.
PASSWORD: 05310
Basic information on navigating
the service menu
fEach time a value is
modified, press the “save”
button and wait for an audi-
ble signal from the device.
fPress the “next” button to
proceed to the next screen.
fPress the “exit” button to
leave the service menu
and return to the “ready”
screen.
Configuration menu for service
days (default: every 365days) and the pre-filter
(activated carbon, particle filter, etc.)
fSelect option with slider
fSet required value
fPress “save” and wait for an
audible signal!
fPress “next”
Settings for WCF alert and
permeate polishing filter (postfilter)
This filter can re-mineralise!
fSelect option with slider
fSet required value
fPress “save” and wait for an
audible signal!
fPress “next”
1 W.C.F. = Water Conversion Factor: the proportion of permeate to feedwater in percent

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a
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a
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TANK MODE STOP PRESSURE
FAUCET
2.5 BAR
3.5 BAR
OPERATING MODE
PRESSURE TANK
2.0 BAR
3.0 BAR
4.0 BAR
TECHNICAL SERVICE MENU
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a
s
a
s
TANK HYSTERESIS
-1.0 BAR
-1.4 BAR
-1.8 BAR
CONDUCTIVTY UOM
uS TDS
-1.2 BAR
-1.6 BAR
-2.0 BAR
TECHNICAL SERVICE MENU
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a
s
a
s
TANK HYSTERESIS
CONDUCTIVTY UOM
-1.0 BAR
-1.4 BAR
-1.8 BAR
uS TDS
-1.2 BAR
-1.6 BAR
-2.0 BAR
TECHNICAL SERVICE MENU
Setting for operating with a
pressure tank OR UTS2operation
(FAUCET).
In tap mode, no shut-off pressure
is available!
In pressure tank mode, the
following shut-off pressure levels
are available.
2.0 bar / 2.5 bar / 3.0 bar /
3.5 bar / 4.0 bar
Note: In operation, the shut-off
pressure will briefly exceed the
set value. This is normal.
Settings for conductivity reading in the main menu (TDS or µS/cm) and
pressure tank hysteresis
(shut-off pressure – hysteresis = switch-on pressure of the RO unit)
Note: The hysteresis should be between 1.6 and 1.8 bar to minimise
the switching cycles of the pump. This affects the service life of the
pump and the membrane!
RESET
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INLET WATER COUNTER
DAYS COUNTER
OUTLET WATER COUNTER
PUMP HOUR COUNTER
KEEP PRESSED SAVE ICON TO RESET
TECHNICAL SERVICE MENU
HISTORY LOGS
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14-09-18
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TECHNICAL SERVICE MENU
bestaqua 14ROC
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INFO
TOTAL LITER INLET WATER COUNTER
TOTAL LITER OUTLET WATER COUNTER
ABSOLUTE PUMP HOUR COUNTER
SOFTWARE RELEASE:
APP RELEASE:
1000000
1000000
99999
HQLTV1.0
THERV1.0
bestaqua 14ROC
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INFO
TOTAL LITER INLET WATER COUNTER
TOTAL LITER OUTLET WATER COUNTER
ABSOLUTE PUMP HOUR COUNTER
SOFTWARE RELEASE:
APP RELEASE:
000508
000206
0001
HQLTV1.0
THERV1.0
Settings for service
resets:
All counters can be
reset!
The pump operating
time counter is secured
with a password to pre-
vent it from being reset
accidentally!
Once the “save” button
is pushed and an audible
signal sounds, the
desired values are reset.
The reset history list
shows which parameter
was reset on which day
(date).
bestaqua 14ROC
exit
next
INFO
TOTAL LITER INLET WATER COUNTER
TOTAL LITER OUTLET WATER COUNTER
ABSOLUTE PUMP HOUR COUNTER
SOFTWARE RELEASE:
APP RELEASE:
1000000
1000000
99999
HQLTV1.0
THERV1.0
Software release: Current firmware in the device.
App release: Current version of the smartphone app.
The software and the app must have the same
release in order for the RO device to function
correctly.
2 UTS: “under the sink”

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14
3.5.5 Fault messages
bestaqua 14ROC
faucet
dripping
bestaqua 14ROC
leakage
bestaqua 14ROC
no
water
bestaqua 14ROC
pump
cooling
bestaqua 14ROC
fault
System loosing
pressure in “Tap”
mode, or permeate
line leaks.
Switch off device.
Check for and
repair leaks.
Switch the unit
back on.
Leakage in the
device itself!
This may be
caused by either a
leak or excessive
ambient humidity.
Switch off the
device. Check and
repair any leaks.
Possible causes:
fInlet water
pressure too
low
fInlet water
line closed off
fPotential inlet
water lead
compromis-
ing water
pressure
Running time
of the pump
exceeded,
bi-metallic switch
triggered.
Thermal overload
protects pump.
Pump will cool be-
fore switching on.
Please report this
to BWT.
Include a screen-
shot of the log file!
4 Troubleshooting
4.1 Overview of the status and alert LED
Status and alert: LED colour: Description of the device status:
working (production) Green / illuminated RO device produces permeate (purified water) / POWER ON
working (production) Yellow / illuminated WCF alert triggered
working / bluetooth
connected Blue / illuminated Mobile device connected to RO via Bluetooth
working / bluetooth
connected Blue / flashing Bluetooth connection interrupted
Fault Red / flashing Fault message according to display in app
4.2 Fault correction
Possible cause: Fault correction:
fNo raw water feed since
the shut off valves in the
inlet are closed.
fThe external pre-filter/
particle filter is blocked
fFaulty power cable
fCheck the shut off valves and open if necessary; check the flow
pressure (working range of the RO unit: 1.5 to 4.0 bar)
fCheck pre-filter and replace if necessary
fObserve the provisions in the operating manual of the external
pre-filter
fReplace faulty mains plug (ensure that the green LED is lit
steadily)
fInform customer service
fWater leaking inside the
device or RO cartridge
not screwed in
completely
fDisconnect devices from power and water supply
fScrew in RO cartridge hand-tight (using two hands is too tight
and not necessary)
fInform customer service
fPump doesn't start or is
audibly louder
fPump faulty (overheating)
fPump fuse faulty (overheating)
fInform customer service

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ATTENTION!
fIn the event of a fault in the RO device, there is no alert signal. Before the RO device is
exchanged, the following causes must be checked and forwarded to customer service.
5 Repairs and maintenance
5.1 Maintenance and wearing parts
You have purchased a product that is durable and easy to service. However, all technical equip-
ment requires regular servicing so that it continues to function properly.
If the product malfunctions during the warranty period, contact your contract partner or the
installation company, and quote the unit type and serial number (see technical specifications or
the type plate on the unit).
Wearing parts must be replaced within the prescribed maintenance intervals.
ATTENTION!
fTo maintain correct functioning and optimal water quality, the unit must be maintained at
regular intervals (at least once per year) by an authorised service technician.
fPlease observe the provisions in the operating manual for the installed external pre-filter.
fBefore performing work on electrical components or opening the housing, it is mandatory
that the mains plug be pulled and both the water infeed and the permeate line be closed off
in order to guarantee that the unit is voltage-free.
fWhenever maintenance is performed, the connection lines and the device must be checked
for damage.
NOTE!
fOnly customer service may replace the wearing parts (e.g. after a faulty pump).
Replacement of wearing parts:
Maintenance work: Responsible: Recommended maintenance interval:
General visual inspection Customer Weekly
Leak inspection Customer Weekly
Cleaning with a damp cloth Customer As necessary
Operating pressure between 2.0 and 4.0 bar Customer Weekly
Conductivity (with external measuring device) Customer/service At least once per year
Replacement of the external pre-filter insert
(carbon/particle filter [optionally available])
Customer/service Depending on the pre-filter used
Replacement of the RO cartridge Service Once per year (recommended)
Water hardness test Service At least once per year
ATTENTION!
fIn accordance with BVG A3 (VBG4), the unit must be tested for electrical safety every 4 years.
fThe BWT bestaqua 14ROC reverse osmosis unit is subject to the Pressure Equipment Directive
2014/68/EU from 27 Jun 2014. The RO unit fulfils the requirements set forth in article 3,
section 3, and was designed and manufactured according to the applicable engineering
good practices.
fThe BWT bestaqua 14ROC device does not have a CE mark according to article 6, section 5,
of the directive 2014/68/EU, but the attached CE Declaration of Conformity is valid.
5.2 Cleaning
Clean the reverse osmosis unit with a damp cloth and a mild cleaning agent.
To protect the surfaces of the device, do not use alcohols, bleach or solvents.

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5.3 RO cartridge replacement
If the permeate flow rate drops off or the conductivity of the permeate rises, the membrane ele-
ment must be replaced. Furthermore, we recommend replacing the membrane every 12 months.
Further information on replacing the RO cartridge can be found in paragraph 3.3.
5.4 Disposal
Procedure: The BWT bestaqua 14ROC consists of various materials which need to be
disposed of properly.
Please contact your contract partner for an expert and environmentally friendly
disposal. Please do not dispose of depleted batteries in general household waste.
Any electronic parts should be disposed of only at authorised recycling centres (2012/19/
EU). Observe the applicable national regulations on disposal of electric devices.
5.5 Standard IEC 60335–1
This device is not intended to be operated by persons not in possession of full physical,
sensory and mental faculties (including children) nor by persons without relevant experience
or knowledge. Prior to using the device, personnel must be instructed in its use and given
clear operating instructions by an expert specialist.
The device is to be secured against access by children.
To avoid hazards, in the event of any damage to the power cable, it must be replaced by the
manufacturer, a service partner of the manufacturer or a similarly qualified person.
Please visually inspect the water hoses for damage (see paragraph 5.1).
5.6 Technical data BWT bestaqua 14ROC
Technical data BWT bestaqua 14ROC
Permeate production *1) (produced) l/min (l/h) 2 l/min (120 l/h)
Salt retention rate %> 97
Water conversion factor WCF (factory setting) *2), *3) %approx. 50%
Feedwater flow rate l/min (l/h) min. 4.2 l/min; min. 250 l/h
Concentrate (only while operating) l/min (l/h) approx. 2.0 l/min; approx. 120 l/h
Feed water pressure MPa (bar) 0.15–0.4 MPa (1.5– 4.0bar)
Feedwater, ambient temperature (min./max.) °C 5 – 30 / 5 – 40
Iron + manganese (Fe+Mn) mg/l < 0.05
Silicate (SiO2) mg/l < 15
Salt level, Total Dissolved Solids (TDS) mg/l < 500
Silt Density Index (SDI) %/min < 3
Oxidants mg/l < 0.05
Protection class IP 54
Electrical connection / fuse / internal fuse V/Hz/A 230 / 50 / 10 / 1.25 A (Type T / “slow burn”)
Electrical power consumption (operation/standby) W200 / < 3
Plug standard (grounded PE mains plug) IEC-320 socket
Feedwater, permeate and concentrate connec-
tions
Inches/inch-
es/inches
3/4"; 5/16"; 5/16" JG
Dimensions: Width, depth, height (W×D×H) mm 152 × 254 × 508
Weight kg 11
Order numbers: 821039 / RS81M01A00
*1) The actual nominal flow rate may deviate slightly from the flow rate indicated in the table due to fluctuations in the feedwater quality, the flow pressure,
the water temperature, and the permeate counter-pressure (e.g. with great permeate pumping heights).
*2) As a general rule, the manufacturer recommends pre-treating the feedwater.
*3) The RO device is factory-configured for a WCF of about 50%.

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BWT UK Limited
BWT House, The Gateway Centre,
Coronation Road,High Wycombe,
Buckinghamshire, HP12 3SU
Telephone: [phone]
Email: [email protected]
www.bwt-uk.co.uk