Grunbeck AVRO 125 TS, AVRO 125 TL Operation Manual

Operation manual

Reverse osmosis system

AVRO 125 TS/TL

Edition January 2018
Order no. 185 752 945-inter

Reverse osmosis system

AVRO 125 TS/TL

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Table of contents



The operation manual consists of several chapters, which are
listed below.

A General information

5

1 Preface

2 How to use this operation manual
3 General safety information
4 Shipping and storage
5 Disposal of used parts and materials

B Basic information 8

1 Laws, regulations, standards

2 Water
3 Functional principle of reverse osmosis

C Product description 10

1 Type designation plate

2 Functional description
3 Intended use
4 Application limits
5 Scope of supply

D Installation 23

1 General installation instructions

2 Preliminary works
3 Connecting the system on the water side
4 Electrical installation

E Commissioning 29

1 How to flush the system

F Operation 33

1 Preface

2 Operating the control unit

3 Programming levels
4 Operating reverse osmosis

G Troubleshooting 41
H Maintenance and care 43

1 Basic information

2 Inspection (functional check)
3 Maintenance
4 Operation log (maintenance checklist)

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Publisher's information

All rights reserved.
© Copyright by Grünbeck Wasseraufbereitung GmbH
Printed in Germany

Effective with the date of edition indicated on the cover sheet.

-We reserve the right to modifications, especially with regard to
technical progress-

Reprints, translations into foreign languages, electronic storage
or copying only with explicit written approval of
Grünbeck Wasseraufbereitung GmbH.

Any type of duplication not authorised by Grünbeck Wasseraufbereitung
is a copyright violation and subject to legal action.

Responsible for contents:
Grünbeck Wasseraufbereitung GmbH
Josef-Grünbeck-Straße 1  89420 Hoechstaedt/Germany
Phone [phone]  Fax [phone]
www.gruenbeck.de  [e-mail]

Printing: Grünbeck Wasseraufbereitung GmbH
Josef-Grünbeck-Str. 1, 89420 Hoechstaedt/Germany

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EU Declaration of Conformity

This is to certify that the system designated below meets the safety and health requirements of
the applicable European guidelines in terms of its design, construction and execution.

This certificate will become invalid if the system is modified in a way not approved by us.
Manufacturer: Grünbeck Wasseraufbereitung GmbH

Josef-Grünbeck-Strasse

89420 Hoechstaedt/Germany
Responsible for documentation: Markus Pöpperl
System designation: Reverse osmosis system AVRO

125

System type: TL/TS

Serial no.: Refer to type designation

plate

Applicable directives: Machinery Directive (2006/42/EC)

EMC (2014/30/EU)
Applied harmonised standards,

in particular:

EN ISO 12100:2011-03,

EN 61000-6-2:2006-03

EN 61000-6-3:2011-09
Applied national standards

and technical specifications,
in particular:

DIN 31000/VDE 1000:2011-

05

Place, date and signature: Hoechstaedt, 05.04.2016 i. V.

M. Pöpperl

Dipl. Ing. (FH)
Function of signatory: Head of Product Implementation and Product Launch

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A General information

1 | Preface

Thank you for opting for a Grünbeck product. Backed by decades of
experience in the area of water treatment, we provide customised
solutions for all kind of processes.

Drinking water is classified as food and requires particular care.
Therefore, always ensure the required hygiene in operating and
maintaining systems involved in the drinking water supply. This also
applies to the treatment of water for industrial use if repercussions for
the drinking water cannot completely be excluded.

All Grünbeck systems and devices are made of high-quality materials.
This ensures trouble-free operation over many years, provided you
treat your water treatment system with the required care. These
operating instructions assist you with important information.
Therefore, please read the entire operation manual before installing,
operating or maintaining the system.

Customer satisfaction is our prime objective. And providing customers
with qualified advice is crucial. If you have any questions concerning
this system, possible extensions or general water and waste water
treatment, our field service staff, as well as the experts at our
headquarters in Hoechstaedt, are available to help you.

Advice and assistance

For advice and assistance please contact your local representative
(refer to www.gruenbeck.de). You can also get in touch with our
service centre, which can be reached during business hours:
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
We can connect you with the appropriate expert more quickly if you
provide the required system data. In order to have the required data
handy at all times, please copy it from the type designation plate to
the overview in chapter C-12.

2 | Notes on using the operation manual

This operation manual is intended for operators of our systems. It is
divided into several chapters (a letter is assigned to each of them)
that are listed in the "Table of contents" on page 2 in alphabetical
order. Check for the corresponding chapter on page 2 in order to find
the specific information you are looking for.

The headers and page numbers with chapter information make it
easier to find your way around in the operation manual.

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3 | General safety information

3.1 Symbols and notes

Important information in this operation manual is emphasised
by symbols. Please pay particular attention to this information to
ensure the hazard-free, safe and efficient handling of the system.

Danger! Failure to adhere to this information will cause serious or
life-threatening injuries, extreme damage to property or inadmissible
contamination of the drinking water.

Warning! Failure to adhere to this information can cause injuries,
damage to property or contamination of the drinking water.

Caution! Failure to adhere to this information can result in damage
to the system or other objects.



Note: This symbol emphasises information and tips that make your
work easier.

Tasks with this symbol are only allowed to be performed by
Grünbeck's technical service/authorised service company or by
persons expressly authorised by Grünbeck.

Tasks with this symbol are only allowed to be performed by trained
and qualified electrical experts according to the VDE guidelines or
according to the guidelines of a similar local institution.

Tasks with this symbol are only allowed to be performed by water
suppliers or approved installation companies. In Germany, the
installation company must be registered in an installation directory of
a water supplier as per §12(2) AVBWasserV (German Ordinance on
General Conditions for the Supply of Water).

3.2 Operating
personnel

Only allow persons who have read and understood this operation
manual to work with the system. The safety guidelines are to be
strictly adhered to.

3.3 Intended use

The system is only allowed to be used for the purpose outlined in the
product description (chapter C). The guidelines in this operation
manual as well as the applicable local guidelines concerning the
drinking water protection, accident prevention and occupational safety
must be adhered to.

In addition, appropriate application also implies that the system
is only allowed to be operated when it is in proper working order.
Any malfunctions must be repaired at once.

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3.4 Protection from water damage

Warning! In order to properly protect the installation site from

water damage:

a)

a sufficient floor drain system must be available or

b)

a safety device (refer to chapter C Optional accessories) must be
installed.

Warning! Floor drains that discharge to a lifting system will not
work in case of a power failure.

3.5 Indication of
specific dangers

Danger due to electrical energy!  Do not touch electrical parts with
wet hands! Disconnect the system from the mains before starting
work on electrical system components! Have qualified experts replace
damaged cables immediately.

Danger due to mechanical energy! System components can be
subject to overpressure. Danger of injury and damage to property due
to escaping water and unexpected movement of system parts.
 Check pressure lines regularly. Depressurise the system before
starting repair or maintenance work on the system.

Hazardous to health due to contaminated drinking water!  The
system shall be installed only by a specialist company. Strictly adhere
to the operating instructions! Ensure that there is sufficient flow. The
pertinent guidelines must be followed for starting-up after extended
periods of standstill. Inspections and maintenance must be performed
at the intervals specified!



Note: By concluding a maintenance contract, you ensure that all of
the required tasks are performed on time. You can perform the interim
inspections yourself.

4 | Shipping and storage

Caution! The system can be damaged by frost or high temperatures.

In order to avoid damage of this kind:
Protect from frost during shipping and storage!

Do not install or store system next to objects which radiate a lot of heat.

5 | Disposal of used parts and consumables

Used parts and consumables are to be disposed of or made available
for recycling purposes according to the applicable local guidelines.

If consumables are subject to specific regulations, adhere to the
corresponding information on the packing.

If in doubt, contact your local waste disposal authority or the
manufacturer for more information.

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B Basic information (reverse osmosis system)

1 | Laws, regulations, standards

In the interest of good health, rules cannot be ignored when it comes
to the processing of drinking water. This operation manual takes into
consideration the current guidelines and stipulates information that
you will need for the safe operation of your water treatment system.

Among other things, the regulations stipulate that
 only approved specialist companies are permitted to make major

modifications to water supply systems

 and that checks, inspections and maintenance on installed devices

are to be performed at regular intervals.

2 | Water

There is no chemically pure water in nature. Even in the

atmosphere, rain water absorbs various substances that change the
properties of the water to a greater or lesser degree. This process
continues as the water passes through the ground layers, with the
result that the water is enriched with increasingly large quantities of
materials. Carbon dioxide (CO2) is particularly important here, since
this substance increases the dissolving capability of the water even
more. Consequently, drinking water contains quantities of dissolved
sodium, potassium, calcium, magnesium, iron, manganese, copper,
zinc, chlorides, fluorides, sulphates and also nitrates, nitrites,
phosphates and silicates that vary greatly from location to location.

Due to dynamic substance and water cycles, harmful elements,
are increasingly being released into the natural environment.
These are only partially and slowly broken down by natural effects.
Consequently, these elements build up in the groundwater and
surface water over the course of time. Removing them from
natural water deposits again represents a particular challenge.
Grünbeck faces this challenge with the aim of producing unpolluted
drinking and industrial water.

The water works provide us with pure drinking water that is suitable
for consumption. However, if the water is to be used for technical
purposes, further treatment is frequently required.

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3 | Functional principle of reverse osmosis

Principle:

Pretreated
feed water

Concentrate:

Permeate

Fig. B-1: Functional principle

Osmosis Osmotic pressure Reversed osmosis

Solution of
high
concentration

Solution of low
concentration

Solution of
high
concentration

Solution of low
concentration

Solution of
high
concentration
(concentrate)

Solution of low
concentration
(permeate)

Fig. B-2: Reverse osmosis principle

In the osmosis process, aqueous solutions of different
concentrations are separated by a semi-permeable
membrane. In keeping with the law of nature, the
concentrations will tend to equalise. What is referred
to as "osmotic pressure" is generated on the side of
the higher original concentration.

In case of reverse osmosis, this osmotic pressure is
countered by a higher pressure. The consequence:
The process runs in the opposite direction.
A particular advantage of the reverse osmosis
technology compared to other water treatment
processes is the fact that apart from the removal of
dissolved salts, bacteria, germs, particles, and
dissolved organic substances are also reduced.

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C Product description

1 | Type designation plate

The type designation plate can be found on the housing of the reverse

osmosis system AVRO 125 TS/TL. In order to speed up the processing
of your inquiries or orders, please specify the data shown on the type
designation plate of your system when contacting Grünbeck. Please
copy the indicated information to the table below in order to have it
handy whenever necessary.

Reverse osmosis system AVRO 125 TS/TL
125

 

Serial number:

     / 

Order number:

     

Fig. C-1: Type designation plate

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2 | Functional description

Via the 5 µm drinking water filter (filter element), the water is directed
to the inlet of the feed water section. The water flows to the high­pressure pump via the inlet solenoid valve with a downstream
pressure switch for minimum pressure. By means of an adjusting
valve, the pressure generated by the pump is reduced to the required
operating pressure and the water is directed to the membrane.
The membrane separates the water into the partial flows permeate
and concentrate. A partial flow of the concentrate is returned to the
feed water via an orifice regulating independently of pressure and
thus ensures a steady flow over the reverse osmosis membrane and
increases the economic efficiency of the reverse osmosis system.

At the same time, the concentrate volume flow is run via an AVRO
treatment module. where seed crystals are formed at a cathode due
to the application of direct current. These seed crystals are then
washed out with the residual concentrate and thus the reverse
osmosis membrane is protected from clogging. Whenever the system
is switched off (tank full) or in case of disturbances, the substances
retained on the membrane are flushed off by means of the inlet
solenoid valve and a solenoid valve switched in parallel to the control
valve for concentrate.

The hydraulic set-up of the system is designed in a way that the
concentrate volume and the permeate volume are registered by
means of flow sensors and are displayed in the control unit.
The system recovery can also be called up in the control unit.

1)

The permeate produced is fed into a light-tight reservoir. A level
control with three switching contacts is integrated in the tank. In order
to supply the consumers with permeate, a centrifugal pump made of
high-performance plastics including pressure switch and diaphragm
expansion tank is integrated in the system as pressure booster
system.

1)

Only AVRO 125 TS

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Fig. C-2: Exploded drawing reverse osmosis system AVRO 125 TS/TL-TS

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5 µm fine filter incl.
pressure reducer

Pressure reducer preset to 2.5 bar, incl. pressure gauge.

Inlet solenoid valve During permeate output, this valve is always open. Following the system

stop (tank full), the valve remains open for the programmed flushing time
of the membranes. Visual indication in the control unit .

Pressure switch
Pressure booster pump

Switches the pressure booster on when water is required, and off again
after water withdrawal ends.

Flushing solenoid valve

Opens after the level control in the tank reports "FULL" to the control
unit for a set time. The solenoid valve also opens in the event of
system malfunctions and always in conjunction with the inlet solenoid
valve .

Needle valve, concentrate To set the feed water-dependent "concentrate" volume flow to the drain.

During permeate output, this portion of the water flow permanently flows
to the drain.

High-pressure pump Pump unit that generates the operating pressure required for the

membrane. Pump operates on permeate request from the level
control (LB switches) located in the permeate tank. A control valve
for adjusting the operating pressure is integrated in the pump head.

Visual indication in the control unit .
Membrane Reverse osmosis membrane to generate the permeate.
AVRO treatment unit AVRO treatment unit to generate seed crystals.
Level control Float level control for controlling the water level in the permeate tank

(TS version only).
Booster pump Pressure booster pump feeds permeate into the consumer network

(only TS version).
Control unit Microprocessor controller that in conjunction with the respective units,

regulates the permeate production and the supply of consumers

downstream.
Flow sensor, concentrate Registers the concentrate volume and sends pulses to the control unit.

Visual indication of the permeate volume in the control unit .
Flow sensor

Permeate

Records the permeate volume and sends pulses to the control unit.

Visual indication of the permeate volume in the control unit .
Diaphragm expansion tank Permeate buffer to reduce the switching operations of the DE pump.
Pressure switch

High-pressure pump

To prevent the high-pressure pump from running dry. Switches time-

delayed after the solenoid valve has opened . Visual indication in the

control unit .
Connection ½" (DN 15)

male thread

Concentrate to drain.

Connection ½" (DN 15)
male thread

Feed water.

Connection ½" (DN 15)
male thread

Permeate/consumer.

Option: Solenoid valve forced withdrawal.
Option: Conductivity measurement.
Option: Blending unit.

1

2

11

3

4

9

2

5

6

9

11

7
8
9

10

11

12

11

13

11

14
15

2

11

16

17

18

19

20
21

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2.1 Flow chart of reverse osmosis system AVRO 125 TS/TL

Fig. C-2.1: Flowchart of reverse osmosis system AVRO 125 TS/TL-TS

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Technical specifications Reverse osmosis system
AVRO 125 TS AVRO 125 TL

Connection data

Nominal connection diameter of feed water pipe ½" (DN 15) male thread
Nominal connection diameter of permeat e outlet ½" (DN 15) male thread
Nominal connection diameter of concentrate

outlet

½" (DN 15) male thread

Min. drain connection required [DN] 50
Connected load, approx. [kW] 0.7 0.6
Power supply [V/Hz] 230 V / 50 Hz
Protection/protection class IP 54 / I
Performance data
Permeate output at a feed water temperature

of 10 °C / 15 °C

[l/h]

105 / 125

Electrical capacity of pump at operating pressure [kW] 0.55
Permeate output per day

(max. 24 h) approx. min./max.

[m³/d]

2.5 / 3.0

Inlet flow pressure of feed water, min. [bar] 2.5
Permeate supply approx. [l] 38

-

Pump characteristic curve pressure booster [l/h/bar] 300 / 3.5 - 1200 / 1.0

-

Nominal pressure PN 16
Salt rejection 95 – 99 %
Total salt concentration of the feed water as

NaCl, max.

[ppm] 1000

Concentrate volume flow (at 15 °C) [l/h] 1251)
Feed water volume flow

(fresh water 15 °C) at a recovery of 50 %, max.

[l/h] 250

Recovery [%] 501)
Dimensions and weights
Dimensions (w x d x h) approx. [mm] 600 x 550 x 1120
Empty weight, approx. [kg] 45 38
Operating weight, approx. [kg] 85 40
Ambient data
Temperature of feed water, min./max. [°C] 10 / 30
Ambient temperature, min./max. [°C] 5 / 35

Order no. 752 105 752 115

1)

After a water analysis, the technical customer service can set a higher recovery.

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3 | Intended use

The reverse osmosis system AVRO 125 TS/TL is used for

demineralising drinking water. The water is primarily used for
industrial applications.

The permeate capacity of the system depends on the temperature
and is defined at 15 °C. The permeate outputs can fall (falling
temperature) or rise (rising temperature) by up to 3 % for each °C rise
or fall in the feed water temperature.

The system is adjusted to the permeate requirements to be expected
at the installation site, it is not suitable for major deviations.

Only operate the system if all components are properly installed.
Safety devices and equipment must NEVER be removed, bridged or
tampered with.

Appropriate application of the device also implies that the information
contained in this operation manual and all safety guidelines applying
at the installation site be observed. Furthermore, the maintenance
and inspection intervals have to be observed.

3.1 System shutdown

If the system is shut down for more than 14 days, the reverse
osmosis system must be preserved by Grünbeck's technical customer
service/authorised service company. The maximum time, the system
can remain in the preserved condition is 6 months.

In case the down time is longer, the system must be preserved
again in regular intervals by Grünbeck's technical customer
service/authorised service company. Prior to resuming operation,
the preserving agent must be flushed from the system.

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4 | Application limits

For the application of the reverse osmosis system AVRO 125 TS/TL,

the limit values stipulated in the German Drinking Water Ordinance
represent the upper limits for the admissible substances contained in
the water.

 < 22°dH (39.2° f; 3.92 mmol/l) without water analysis
 Free chlorine not detectable

 Iron < 0.10 mg/l
 Manganese < 0.05 mg/l
 Silicate < 15 mg/l
 Chlorine dioxide not detectable
 Turbidity < 1 FTU
 Colloid index < 3
 pH range 3 - 9

For total hardness > 22 °dH or sulphate > 250 mg/l a water analysis is

required.



Note: The permeate originating from the reverse osmosis system is
not potable but requires additional treatment (blending, hardening) if it
is to be used as drinking water.

Caution! In case of an admissible excess of the sulphate
concentration due to geogenic conditions, the recovery with regard to
the standard settings according to layout might need to be reduced.

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5 | Scope of supply

5.1 Standard equipment

 Stand-alone housing made of opaque PE to accommodate all

aggregates and control elements. Stand-alone housing also serves
as supply tank (AVRO 125 TS/TL-TS only).

 Microprocessor controller with LC display, voltage-free collective

fault signal and voltage-free signal contact (maintenance interval,
various pre-warnings), installed in a stand-alone housing.

 Sliding-vane rotary pump made of corrosion-resistant brass with

motor as high-pressure pump to supply the membrane, incl. control
valve for operating pressure and pressure gauge.

 1) External pressure booster with pressure switch and membrane

connection vessel for supplying permeate to downstream
consumers.

 Hydro module for the water supply within the membrane system.

Integrated valves and measuring instruments for easier system
calibration.

 5 µm drinking water filter with integrated pressure reducer, preset

to 2.5 bar.

 Ultra-low pressure reverse osmosis membrane, installed in

pressure pipe made of high-strength PE.

 AVRO treatment unit, installed in a pressure pipe made of high-

strength PE.

 Flow sensor to measure the volume of the system flows permeate

and concentrate.

 Operation manual.

1)

only AVRO 125 TS.

5.2 Optional features



Note: It is possible to retrofit existing systems with optional
components. Please contact your local Grünbeck representative or
Grünbeck’s headquarters in Hoechstaedt for more information.

 Connection block for RO 125 K/AV RO 125

Connection block (installation length 180 mm).
Permeate-resistant incl. two shut-off valves –
suitable for connection set

752 840

 Connection set for RO 125 K/AVRO 125

2 flexible connection hoses DN 15
(L = 600 mm) for feed water and permeate
1 drain hose for concentrate

752 830

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 Conductivity measurement for

RO 125 K/AVRO 125
As plug-on circuit board for the control unit.
Display with limit value and delay, incl.
connecting line and conductivity measuring
cell.

752 820

 Solenoid valve forced withdrawal

RO 125K/AVRO 125
Solenoid valve adaptable on permeate outlet.
Hydro modul for forced withdrawal with
AVRO 125 TS from the tank during lengthy
idle times.
Electrically controlled from the AVRO 125 TS
control unit.

752 810

 Blending unit for

RO 125 K/AVRO 125
Adaptable control unit on hydraulic unit
AVRO 125 TS/TL consisting of: Connection
G ¾ for feed water, solenoid valve, needle
valve, flow sensor to display the total blended
water in the control unit AVRO 125 TS/TL,
connection option for blended water in AVRO
125 TS/TL or on-site tank.

752 800

 Drinking water filter BOXER K

Filter element 80 µm for prefiltration.

101 210

 Euro system separator GENO-DK 2 Mini

For protecting systems hazardous to drinking
water in accordance with DIN 1988 Part 4
(DIN EN 1717) GENO-DK 2 Mini.

133 100

 GENO activated carbon filter AKF 250

For reducing the chlorine content in water.

109 010

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 GENO-STOP 1"

The safety device
GENO-STOP offers you reliable all-round
protection against water damage.
For additional versions, please inquire.

126 875

 Pure water tank for intermediate storage

of permeate flowing unpressurised from
GENO-reverse osmosis systems
Tank design:
All tanks are pre-assembled, with PVC
overflow pipe as well as connections for
the permeate inlet and the suction line of
the pressure booster system. Grey PE.
Handhole with removable screwed cover
and level control GENO-Multi Niveau
(switching level).

 Pure water basic tank RT "sterile" cpl.

net volume approx. 850 litres / L 780 / W 990 /
overall height 2000 mm*.

712 400

 Add-on tank RT for pure water basic tank

net volume approx. 850 litres / L 780 / W 780 /
overall height 2100 mm*.

712 405

 Pure water basic tank RT "standard"

net volume approx. 850 litres / L 780 / W 1000 /
overall height 2050 mm**.

712 410

* Tank height incl. connecting pieces.

For larger tanks, please inquire
** without sterile overflow channel as

siphon – overflow as down-pipe
Additional tank without level control and

overflow loop,
including 2 connecting lines, id=36 mm.



Note: A maximum of four supply tanks can be combined.

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 Pressure booster

GENO FU-X 2/40-1 N

Compact pump unit with pressure-dependent
control consisting of a centrifugal pump cpl.
stainless steel, as well as integrated pressure
and contact water meter. Control electronics
with power switching, back-lit graphic display.
Operating switch, operating log via SD card,
voltage-free signal/fault signal contact, non­return valve, shut-off valve for each pump
(on suction and pressure side), membrane
expansion vessel with forced flow.
Delivery rate: max. 1,2 - 4,2 m³/h
Delivery head: max. 18.2 – 45.6 m
Power supply: 230 V / 50 Hz
Power consumption: 1 kW
Connections: DN 25 / DN 32
Protection type: IP 55

730 640

 Pressure booster

GENO FU-X-2/40-2 N

Description as single pressure booster, still
offers the load change switching function.

For additional pressure booster systems,
please inquire

730 641

Reverse osmosis system

AVRO 125 TS/TL

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5.3 Consumables

Only use genuine consumables in order to ensure the reliable
operation of the system.

GENO-replacement filter element, 5 µm
with protective cylinder
Packing unit: 2 pc

103 061

Reverse osmosis membrane with seal
Packaging unit: 1 pc

720 290

AVRO treatment unit with seals
Packing unit: 1 pc

720 050

Water test kit "total hardness" °dH and °f.
Packaging unit: 1 pc

170 187

Water test kit "carbonate"
Packaging unit: 1 pc

170 169

5.4 Wearing parts

Seals and valves are subject to a certain wear and tear.
Wearing parts are listed below:



Note: Although these parts are wearing parts, we grant a limited
warranty period of 6 months. The same applies to electrical
components.

a) Solenoid valves, control valves, concentrate, seals
b) High-pressure pump
c) Booster pump

Fig. C-3: Valves

Fig. C-4: High-pressure

pump

C-5: Pressure booster

pump

Reverse osmosis system

A

VRO 125 TS/TL

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D Installation

1 | General installation information

The installation site must offer adequate space. A foundation of a

sufficient size and adequate load carrying capacity has to be provided.
The required connections must be provided prior to the installation.
For dimensions and connection data, please refer to table C-1.



Note: Also observe the operation manuals that have been supplied
with the optional accessories (see chapter C, 5.2) for your system
(if applicable).

1.1 Water connection

When installing the reverse osmosis system AVRO 125 TS/TL, certain
rules must always be observed. Additional recommendations are given
in order to facilitate the handling of the system. The installation
instructions described below are also illustrated in fig. D-2.

Binding rules
The installation of a reverse osmosis system AVRO 125 TS/TL

represents a major interference with the drinking water system.
Therefore, only authorised experts are allowed to install such systems.

 Please observe the local installation guidelines and the general

regulations.

 Install a drinking water filter (e.g. BOXER KD) upstream of the

system.

 Install a system separator upstream.
 Install an activated carbon filter upstream, if required.
 Provide a drain connection (minimum DN 50) to discharge the

concentrate.



Note: If the concentrate is directed to a lifting system, the delivery
rate of the lifting system should at least be 500 l/h.

Warning! The installation site must have a floor drain. If no floor drain
is available, an adequate safety device needs to be installed (refer to
chapter C, no. 5.2 Optional accessories).

Warning! Floor drains that discharge to a lifting system will not
work in case of a power failure.

Recommendation

Install a sample valve immediately before and after the reverse
osmosis system AVRO 125 TS/TL. This simplifies the sampling for
the regular quality control (functional check).

Reverse osmosis system

AVRO 125 TS/TL

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2 | Preliminary work

1. Unpack all system components.

2. Check for completeness and soundness.

3. Install the reverse osmosis system AVRO 125 TS/TL at the
intended location.

3 | How to connect the system to the water supply

 Connect the feed water to the system (refer to fig. D-2, no. 3).
 Only for AVRO 125 TL: Connect the permeate line to the system

and lead it to the on-site tank (refer to fig. D-2, no. 2).



Note: Permeate line must be made of corrosion-resistant material.

 Connect the concentrate line to the system (refer to fig. D-2, no. 1).

Run the hose with a gradient to the drain and connect in
accordance with DIN 1988 (free outlet).



Note: For connection of the system we recommend detachable screw
connections. Furthermore, the connection is to be designed in such a
way that the housing flap of the control unit can be folded back.
Grünbeck recommends: optionally
Connection block for RO 125 K/AVRO 125 752 840
Connection set for RO 125 K/AVRO 125 752 830

Caution! If withdrawal/supply points (e.g. on-site tank) of permeate
from the RO-125K are below the connection level of the system,
a pressure maintaining valve must be installed in the permeate line to
protect the permeate tank against siphoning.

Fig. D-1: Withdrawal point below system level

Reverse osmosis system

A

VRO 125 TS/TL

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BOXER-KD
Euro system separator DK 2-Mini
Activated carbon filter AKF

AVRO 125 TS/TL

Fig. D-2: Installation drawing reverse osmosis system AVRO 125 TS/TL



Concentrate connection



Permeate connection



Feed water connection

Fig. D-2: (a) Reverse osmosis system connections

A
B
C

D

Reverse osmosis system

AVRO 125 TS/TL

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4 | Electrical wiring

Internal wiring of control unit GENO-OSMO-RO125K

or AVRO 125 TS/TL

The system is completely pre-wired (possibly including options) and
delivered ready to plug in. During commissioning, parameter ECL:1
must be reprogrammed to ECL:0 at code level 113 (NC contact
>>NO contact). This is a protective measure to prevent the system
from being inadvertently switched on after the power cable has been
plugged in, without the system having been vented first.

Jumpers must be plugged in like this

Fig. D-3: Printed circuit board assignment GENO- OSMO RO 125K or AVRO 125 TS/TL

Terminal no. Terminal Function (core colour) Note

All protective grounding conductors are connected to the 7-pin protective grounding conductor terminal on the left­hand mounting rail

X1 3 L 230 V / 50 Hz phase

Mains cable, on-site fuse protection
min. 6 A

2 N Neutral conductor
1 PE Earth wire

X2 6 MVW 230 V / 50 Hz phase Rinse solenoid valve

Common neutral
conductor terminal

5 N Neutral conductor
7 MVE 230 V / 50 Hz phase Inlet solenoid valve

10 MVR 230 V / 50 Hz phase Option:

Solenoid valve forced withdrawal

9 N Neutral conductor

Reverse osmosis system

A

VRO 125 TS/TL

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Terminal no. Terminal Function (core colour) Note

X3 12 PS 230 V / 50 Hz phase

GENO-OSMO RO 125K-TS or
AVRO 125 TS

Actuation only integrated booster pump
via relay K2, fuse protection by fuse F3
(T 3,15 A)

GENO-OSMO RO 125K-TL or
AVRO 125/TL



Actuation of pressure booster pump
voltage-free contact: Relay K2,
terminals 21-24



Control voltage for external power unit
230 V~: Relay K2, terminals 14-A2

13 N Neutral conductor

14 HP 230 V / 50 Hz phase Option:

Solenoid valve blending unit

13 N Neutral conductor
14 HP 230 V / 50 Hz phase Actuation of high-pressure pump via relay

K1, fuse protection by fuse F2 (T 4.0 A)

2 N Neutral conductor

X4 33 + Electrode cable AVRO 1

Only used with AVRO 125 TS/TL

34 GND 2

X5 15 COM Common root

Voltage-free contacts NC 250 V~ / 3 A with
common control COM

16 SAMS Fault signal contact
17 MELD Signal contact

X6 28 GND Common ground (brown)

Hall impulse cable of the turbine water
meters

29 WZ0 Pulse input permeate

green

30 WZ1 Pulse input concentrate
31 WZ2 Option:

Impulse input blending unit

32 +12V Common transmitter voltage

12 VDC (white)

X7 24 LEVEL A Switch-off level high-pressure

pump

Brown

Level control permeate tank

25 LEVEL B Switch-on level high-pressure

pump

green

26 LEVEL C Dry-run protection pressure

booster pump

yellow

27 +24V Common transmitter voltage

24 VDC

White

L1

a NC

b NO

c NO

Reverse osmosis system

AVRO 125 TS/TL

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Terminal no. Terminal Function (core colour) Note

X8 18 DS_HP Pressure switch high-pressure pump

Feed water negative pressure, dry-run
protection high-pressure pump

19 +24V Transmitter voltage 24 VDC
20 DS_PS Pressure switch pressure booster pump Pressure switch for controlling the

pressure switch (AVRO 125 TS/TL-TS or
AVRO 125 TS integrated in the system).

For the RO/AVRO 125-TL version, a jumper
must be inserted at terminal s X8 20/ 21.

21 +24V Transmitter voltage 24 VDC

22 CLOSE Release input close



Shutdown of the system when the
thermal protection contact in the
HP pump is activated.



Block system from outside, e.g.

pretreatment, residual hardness ... .

For this purpose, an on-site NC contact
must be connected in series to the
thermal circuit breaker.

23 +24V

Transmitter voltage 24 VDC

X9 35 Shielding Conductive 2-electrode

measuring cell, not
temperature-compensated,
cell constant 0.1 or 1.0

Option:
Conductivity measurement

36 LF E White
37 LF V

Brown

Relay
K1

31
34

Rele ase signal/start of

analysis
Hardness control
monitoring device

Contact is closed
when system is producing permeate.

GENO-Softwatch Komfort:
connect to terminals 16/17.

Arrangement of the components on the mounting rails, accessible

after removal of the control unit:

Protective grounding
conductor, mounted
underneath the two
fuses F2 and F3.

Fig. D-4: Position of protective grounding conductor terminal

Reverse osmosis system

A

VRO 125 TS/TL

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E Commissioning

The work described below is only allowed to be performed by
trained experts. We recommend having Grünbeck‘s technical
service/authorised service company start up the system.

1 | How to flush the system



Note: For the duration of storage and transport, the membrane is
protected by means of a preserving agent. This preserving agent
must be flushed out before the first commissioning. In order to
prevent the system from being switched on beforehand, it is locked
electronically.

1.1 Mounting the
flushing line

Disassemble the permeate line from the collection tank (refer to
figs. E-1, E-2 no. 1) and route it to the drain in a separate hose.

Fig. E-1: Permeate line AVRO TS

Fig. E-2: Permeate line AVRO-TL

Reverse osmosis system

AVRO 125 TS/TL

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1.2 Rinsing out
preserving agent



Note: For more detailed information on the handling of the control unit,
refer to chapter F.



Via code 113, (refer to Table E-1: Extract from…), parameter ECL
release the system: To do this, open parameters with the button,
use the button to set ECL: 1 and confirm with the button



Via code 113, (refer to Table E-1: Extract from…), parameter EnL: 1,
open both solenoid valves ("DEAERATE") and rinse preserving
agent out system for 30 minute by opening parameters with
the button, use the button to set EnL: 1 and confirm with
the button



Terminate the "DEAERATE" program step: Open parameter with
button, set EnL:0 with button and confirm with button



Exit the "EnL" program by pressing the and keys at the
same time

Reverse osmosis system

A

VRO 125 TS/TL

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Table E-1: Extract from point F-3.1 input logic code 113

Display

factory
setting

Parameter Setting

range

Comments

E-A: 1 Contact type level "a" 0 ... 1 0 = NO contact

1 = NC contact

E-b: 0 Contact type level "b" 0 ... 1 0 = NO contact

1 = NC contact

E-c: 0 Contact type level "c" 0 ... 1 0 = NO contact

1 = NC contact

EHP: 2 Type of contact

pressure switch
negative pressure HP
(high-pressure pump).

0 ... 3 0 = NO contact

1 = NC contact
2 = NO contact with auto

restart

1)

3 = NC contact with auto

restart 1)

EPS: 0 Contact type pressure

switch PS (pressure
booster pump).

0 ... 1 0 = NO contact

1 = NC contact

ECL: 0 Contact type close

input.

0 ... 1 0 = NO contact

1 = NC contact

EnL: 0 Rinse system (inlet

and rinsing solenoid
valves).

0 ... 1 1 = Open solenoid valves

(only possible if the
system is switched
off using button).

0 = Close solenoid valves

again

A.PF:0 Function signal contact

terminals 15/17.

0 ... 1 0 = Contact opens when

HP pressure switch
has dropped out,
conductivity pre­warning, level has
fallen below level "c",
maintenance interval
expired.

1 =

Contact closed when
HP pump running.

Reverse osmosis system

AVRO 125 TS/TL

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1.3 Venting permeate output / pressure booster pump

 Reinstall permeate line on collection tank (refer to fig. E-1).
 Switch on the reverse osmosis system by pressing button .

The system produces permeate in the tank.



Note: Below only for reverse osmosis system AVRO 125 TS.

 The pressure booster pump is vented when permeate flows out of

the venting/sample valve (refer to fig. E-3, no. 1), (duration to
permeate flow is approx. 15 minutes). Close the vent valve.

 Plug the pressure switch plug (refer to fig. E-4, no. 1) into the

pressure switch – the pressure booster pump starts pumping.



Note: In order for the booster pump to reach its cut-off pressure,
the downstream line must also be vented. Therefore, it is imperative
to establish permeate consumption.

 Switch-on pressure approx. 1.8 bar; switch-off pressure approx.

3.0 bar.

Fig. E-3: Venting pressure booster Fig. E-4: Pressure switch pressure booster

Reverse osmosis system

A

VRO 125 TS/TL

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F Operation

1 | Preface



Note: Instructions in bold are absolutely essential to ensure that work
can continue. All other instructions can be ignored if the value shown
on the display remains unchanged.

Settings in the technical service programming level are only allowed
to be made by Grünbeck's technical customer service/authorised
service company or by persons expressly authorised by Grünbeck.

Warning! Incorrect settings can lead to hazardous operating
conditions which cause injury, illness or damage to property.

Strictly adhere to the operation manual! Only make the settings
described there!

Fig. F-1: Control unit

Reverse osmosis system

AVRO 125 TS/TL

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2 | How to operate the control unit

Display symbols:

Fig. F-2: Operating panel control unit AVRO 125 TS/TL

Operating display

Appears when the system is switched on using
the button (> 5 s from basic time display).

High-pressure pump

Appears when the high-pressure pump
produces permeate.

Booster pump

Appears when the pressure booster pump is
pumping permeate or when the power unit K2 is
active.

Solenoid valve input

Appears when permeate is being produced, or
when the system is rinsing.

Rinse solenoid valve

Appears when the system is rinsing.

Solenoid valve forced withdrawal

Appears when the permeate tank is emptied to
the drain.

Level indicator permeate tank

Upper wave: Swit
ch-off level for high-pressure
pump.
Middle wave: Switch-on level for high-pressure
pump.
Lower wave: Dry-running protection for
pressure booster pump.

Numerical display
 In the information level, indicates the

time and operating parameters.

 Displays the parameters of the code

levels.

 Displays symbols in addition to the

error message.

Bars for water meter pulses

Flash with every 5th pulse of the water meter
permeate or concentrate.

Dot appears for as long as the pressure booster
pump is blocked (after ON using button, after
exceeding the lower wave permeate tank,
acknowledge after malfunction).

Bars for operational readiness of high-pressure

pump (HP) and pressure booster pump (PS)
Shows the status of the feed water inlet
pressure switch (bar appears when pressure
is active) and PS pump operation enable
(bar appears when enabled).

Flashes when the pressure switch for high­pressure pump drops out during permeate
production (lack of feed water pressure)
Bars for signal and fault signal contact
appears when the maintenance interval has
expired, high-pressure pump pressure switch
failed, conductivity pre-alarm, permeate tank
empty. Er appears in the event of malfunctions
Er 0 … Er 6.

Bar for close inpu

t

 Appears when the system is blocked

because the on-site operational release is
missing.

 Appears when HP pump is overheated.

±

Bar appears when AVRO treatment module
is active (always at the same time as high­pressure pump).

Button functions:

Basic function:

Expanded function in programming levels:



A

cknowledge malfunctions

 Access to time programming

(press and hold button > 2.5 s)

 Open parameters for editing (value is shown flashing)
 Save and close parameters

Switch off system (> 5 s in basic time display)

 Reduce numerical value
 Return to the previous menu item

Switch on system (> 5 s in basic time display),
display operating values of the i nforma tion
level

 Increase numerical value
 Switch to the next menu item

+

Access to the code-protected programming
levels (code request C 000)

+

 Close the opened parameters without saving

(previous value is maintained)

 Jump back to the basic time display

P

Reverse osmosis system

A

VRO 125 TS/TL

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2.1 Reading the
operating status

Various operating parameters can be displayed in the information level.
The information level is accessed by pressing the button (> 5 s).
The other parameters are accessed by touching. The information level
remains locked for as long as the system has not been enabled using
the close input signal.

Button Display

Parameter

00:00

Basic time display

The system might still be switched on with the first press (> 5 s)!

365 Remaining duration of the service interval [days]

3000 Remaining time AVRO maintenance interval

[operating hours]

LF022 Permeate conductivity [µS/cm] (optional –

display value flashes if the advance warning
value is exceeded)

P0200 Permeate flow rate [l/h]

c0200 Concentrate flow [l/h]

u0320 Flow rate blending [l/h] (option 752 800)

A 050 System recovery [%]

2.2 How to set the
time

Requirement:

Basic time display is currently being displayed.

1. Press button > 2.5 seconds, only the hours are still displayed 00:

2. Press button to change the hours (value is flashing, now set the
desired value with or buttons and save with the button)
or
press button to advance to the minutes :00.

3. Press button to change the minutes (value is flashing, now
set the desired value with or buttons and save with the
button).

4. Return to the basic display time by simultaneously pressing
and buttons.

Reverse osmosis system

AVRO 125 TS/TL

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2.3 Access to the
programming
levels – change
parameters

1. Simultaneously pressing the and buttons (> 1 s) causes
the code request C 000 to appear.

2. Set the required code with or button and confirm with
button.

3. Within the programming level, select the desired parameter with
the or button and open it for editing with the button
(value starts flashing).

4. Use the or button to change the parameter to the required
value.

5. Save the new parameter setting with the button (value stops
flashing) or reject the change by simultaneously pressing the
and buttons, and close the parameter again (value stops
flashing, previous setting remains saved).

6. Return to the basic display time by simultaneously pressing
and buttons.

7. If no button is pressed during longer than 5 minutes within a
parameter level, the display automatically jumps back to the basic
time display. Any opened parameters (flashing value) and closed
and the old set value is maintained.

2.4 Software version
Display Parameter

P1.00 Software version of the RO-matic control unit

3 | Programming levels

3.1 Input logic code 113
Display

factory
setting

Parameter Setting

range

Comments

E-A: 1 Contact type level "a" 0 ... 1 0 = NO contact

1 = NC contact

E-b: 0 Contact type level "b" 0 ... 1 0 = NO contact

1 = NC contact

E-c: 0 Contact type level "c" 0 ... 1 0 = NO contact

1 = NC contact

EHP: 2 Type of contact

pressure switch
negative pressure HP
(high-pressure pump).

0 ... 3 0 = NO contact

1 = NC contact
2 = NO contact with auto
restart

1)

3 = NC contact with auto
restart

1)

Reverse osmosis system

A

VRO 125 TS/TL

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Display

factory
setting

Parameter Setting

range

Comments

EPS: 0 Contact type pressure

switch PS (pressure
booster pump).

0 ... 1 RO/AVRO 125-TS:

0 = Normally open contact
RO/AVRO 125-TL:

0 = Normally open
contact + data
bridge
Terminals 20/21
or
1 = Normally closed
contact

ECL: 0 Contact type close

input.

0 ... 1 0 = NO contact

1 = NC contact

EnL: 0 Rinse system (inlet

and rinsing solenoid
valves).

0 ... 1 1 = Open solenoid valves

(only possible if the
system is switched
off using button).

0 = Close solenoid valves

again.

A.PF:0 Function signal contact

terminals 15/17.

0 ... 1 0 = Contact opens when

HP pressure switch
is deenergised,
conductivity pre­warning, level has
fallen below "c",
maintenance interval
expired.

1 = Contact closed when

HP pump running.

1)

If fault Er 1 occurs when permeate production is in progress (high­pressure pump negative pressure switch), the system causes a new
start in at the following time intervals:

5 ... 10 ... 20 ... 40 ... 80 ... 160 minutes.
If there is sufficient pressure available, permeate is produced until

level "a" is reached, and the error is self-acknowledging.
The symbol flashes on the display in the waiting time between

the start attempts

2)

Pressure switch: Switch-on pressure 1.8 bar
Switch-off pressure 3.0 bar

The hysteresis of the pressure switch can be adjusted in parallel with
the central screw of the switch.

P

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3.2 System parameters code 290
Display /

factory
setting

Parameter Setting

range

Comments

1. 0 Cell constant
conductivity
measurement
(optional).

0.0 / 0.1 /

1.0

0.0 = Conductivity meas­urement deactivated,
i.e. parameter
2 ... 4 in-active

0.1 = Measurement

range
0 ... 99 µS/cm

1.0 = Measurement

range
0 ... 999 µS/cm

2. 080 Conductivity limit value
for fault Er 3 [µS/cm].

1 ... 999



Note: Set value
must be selected
appropriate for the
cell constant (i.e.
measuring range)!

3. 070 Conductivity advance
warning [µS/cm]
(display in the
information level starts
to flash and signal
contact switches).

1 ... 999

4. 05 Switch-off delay with
Er 3 [minutes].

0 ... 99 Also delay time for

outputting the signal
message when the
conductivity advance
warning is exceeded.

5. 0 Mains return reaction
for fault Er 0 (mains
failure > 5 minutes).

0 ... 2

0 = Irrespective of

whether the system
was switched off or
on before the mains
failure, it remains
switched off after the
mains returns and
fault Er 0 is output.

1 = Fault Er 0 is

deactivated.

2 = After the mains

power returns, the
system is switched
off or on as it was
before the mains
failure, and fault Er 0
is output.

Reverse osmosis system

A

VRO 125 TS/TL

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Display /

factory
setting

Parameter Setting

range

Comments

6. 1 Daily interval for
forced operation /
forced withdrawal
[days].

1 ... 3 If the day interval since

the last permeate output
has been reached at the
programmed time, forced
operation or forced
withdrawal takes place –
depending on what is
activated.

For AVRO 125 TS, only
forced withdrawal
is permitted in
conjunction with the
solenoid valve forced
withdrawal option!

7.18:00 Time forced operation /
forced withdrawal.

00:00 ...
23:59

8. 0 Duration forced
operation [hours].

0 ... 9

9. 3.0 Opening time solenoid
valve forced
withdrawal [minutes].

0.0 ...

99.9

A. 0 Recovery monitoring

(Er 5).

0 … 1 With AVRO 125 TS/TL

the recovery monitoring
must be activated!

b. 65 Upper recovery limit

value [%].

1 … 99

Caution! With
AVRO 125 TS/TL,
the recovery must
be set to 50 %!

c. 060 Delay time for recovery

deactivation [min.].

0 … 240

4 | Operation of reverse osmosis

4.1 How to set the system recovery

A certain part of the feed water must be rejected in order to prevent

the membrane from clogging due to scaling. The ratio of the produced
permeate volume to the feed water volume is called recovery.

4.1.1 How to set the permeate volume

 Switch on the system at the control unit by pressing the "ON" button.
 Use the adjustment valve operating pressure (refer to fig. F-3,

no. 1) to throttle the pump in such a way that the specific permeate
flow rate 125 l/h is achieved.



Note: The current permeate flow can be displayed via
the control unit (refer to chapter F, point 2.1 Reading the
operating status.

Fig. F-3: Pump

Reverse osmosis system

AVRO 125 TS/TL

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4.1.2 How to set the concentrate volume

 Set the concentrate flow at the concentrate needle valve (refer to

fig. F-4, no. 1).

 The concentrate flow in a standard system has to be set in a way,

that a recovery of 50 % is attained (125 l/h of permeate flow, 125
l/h of concentrate flow).



Note: The current concentrate flow and the recovery can be
displayed via the control unit (refer to chapter F, point 2.1 Reading the
operating status).

Caution! If the recovery setting is not maintained, scaling
(precipitation of dissolved salts) occurs on the reverse osmosis
membrane.

 Measure water values of feed water, permeate, concentrate after

10 minutes and enter them in the operating log.

 Switch off system.

Fig. F-4: Hydro module

Example for the calculation of the recovery

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G Troubleshooting

Even carefully designed and manufactured technical systems that are

operated properly, can experience malfunctions. Table G-1 provides
an overview of possible problems that can occur during the operation
of the systems and indicates the causes and their elimination.

The systems are equipped with an error detection and reporting
system. If an error message is displayed:

1. Press button (= acknowledge malfunction).

2. Watch the display.
If the message reappears, compare it with table G-1.

3. If necessary, notify Grünbeck’s technical customer service.



Note: In the case of malfunctions which cannot be remedied with the
information in Table G-1, it is essential to contact the customer service
(refer to www.gruenbeck.de)! Enter the system designation, serial
number and, if necessary, fault signal in the display.

Table G-1: Troubleshooting

This is what you observe This is the cause This is what to do

Water quality deteriorated
by 50 %.

Membrane clogged. Replace or flush the membrane1).

Feed water values deteriorated. Check feed water values.
Solenoid valve does not
open.

Coil defective or fuse on the
circuit board blown.

Replace coil or fuse.

Solenoid valve does not
close.

Valve contaminated. Clean valve.

Bar appears in the
display above Symbol
Close.

 HP pump: Thermostat contact

has responded, pump has
overheated.

 Upstream hardness

monitoring or water treatment
blocks the system.

 Wait until the pump has cooled

down again, the system will
then automatically continue to
produce.

 Inspect system installed

upstream.

Bar appears in the
display above screw
wrench symbol (without
further indications of a
malfunction).

Service interval has elapsed. Have maintenance performed.

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Continuation Table G-1: Troubleshooting
This is what you observe This is the cause This is what to do

Conductivity measured
value in information level
is shown flashing and bar
appears in the display
over spanner symbol.

Optional conductivity
measurement:
Conductivity pre-warning part
F / chapter 3.2 / parameter 4 has
been exceeded.

Check feed water values and rinse
diaphragm, if necessary.

Er 0 Power failure > 5 minutes

Refer to part F / chapter 3.2 /
parameter A:
Depending on the setting, the
system continues operating or
remains switched off

Check power supply for failures

Er 1 Pressure loss at pressure

switch HP:
Refer to part F / chapter 3.1 /
parameter EHP:
Depending on the setting, the
system had 6 previous
unsuccessful start attempts

Re-establish feed water primary
pressure

Er 2 Invalid level setting in the

permeate tank

Check wiring or setting in code 113,
parameters E-A, E-b and E-c and
correct if necessary (NC/NO
contact assignment)

Er 3 Optional conductivity

measurement:
Conductivity limit value
Part F / chapter 3.2 / parameter 3
has been exceeded

Check feed water values, rinse
diaphragm and renew if necessary

Er 4 Minimum AVRO treatment

current undershot

Have the AVRO treatment module
replaced immediately by
Grünbeck’s technical customer

service/authorised service company
Er 5 System recovery too high Gauge and reset the system
Er 6 AVRO maintenance interval has

elapsed

Notify Grünbeck’s technical

customer service/authorised

service company to have the

AVRO treatment module replaced

promptly
Symbol flashes
(from software V1.22
onwards) or symbol
flashes (up to

software V1.19)

See Er 1: Waiting time runs
between 2 start attempts

Re-establish feed water primary

pressure

1)

Separate flushing instructions for membranes are available for authorised service personnel

under order no. 700 950.

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H Maintenance and care

1 | Basic information

In order to guarantee the reliable function of the systems over a long
period of time, some maintenance work has to be performed at
regular intervals. All regulations and guidelines which apply at the
installation site must be strictly adhered to.

 Check the quality and the system volume flows every day.
 Maintenance has to be performed by Grünbeck’s technical

customer service/authorised service company or by a specialised
company. Maintenance is subject to the load, but at the latest has
to be performed once a year.

 An operation log and the corresponding test log must be kept in

order to document the maintenance work performed.



Note: By concluding a maintenance contract you ensure that all
maintenance work will be performed in due time.

The maintenance work performed must be documented in the
checklist, refer to appendix "Operation log".

2 | Inspection (functional check)

You can perform the daily inspections yourself.
Please refer to the following summary for the tasks to be performed

within the framework of an inspection.

Summary: Inspection work

 Determine inlet water values.

(Water test kit "total hardness" or carbonate hardness).

 Determine the permeate quality. Either at the display if a

conductivity monitoring device is installed or by means of a manual
conductivity meter.

 Read the recovery.



Note: Minor deviations are normal and cannot be prevented
technically. In case of considerable deviations from the standard,
notify Grünbeck's technical customer service.

 Take the remaining time of AVRO treatment unit’s maintenance

interval into consideration (refer to chapter F, point 2.1). If the remain­ing time is < 100 hours, notify Grünbeck’s technical service/authorised
service company to have the treatment module replaced.

 Take the remaining time of the maintenance interval into considera-

tion. (Chapter F - point 2.2 Reading the operating state). In case the
remaining time of the maintenance interval is < 30 days, inform
Grünbeck's technical customer service about the impending service.

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 Make sure that there are no leakages from the system to the drain

(all 3 waves can be seen on the display when the system is
switched off (refer to fig. F-2, point 5). Solenoid valves are not
tightened, visible in the display (refer to fig. F-2, no. 9 and 10).
In this state, no water must creep to the drain.



Note: There can be increased water consumption by the system if the
solenoid valves are leaking. The recovery will be reduced.

3 | Maintenance

According to DIN 1988 part 8 / A 12, maintenance work at the systems is
only allowed to be performed by Grünbeck’s technical service/authorised
service company or an approved specialist company.

For this kind of systems, an operation log - a checklist has to be kept.

In this operation log, the customer service technician records all
maintenance and repair work performed. In case of malfunctions, this
log helps to identify possible sources of error. In addition, the log
documents the proper system maintenance.



Note: Make sure that all maintenance work is recorded in the
operation log as well as in the corresponding test report.

Summary: Maintenance work

 Replace the 80/50 µm resp. 5 µm filter elements.
 If necessary, replace the filter element of the activated carbon filter.
 Check the permeate quality; flush or replace the membrane,

if necessary. So-called flushing instructions (order no. 700 950) are
available for authorised service personnel.

 Replacement of AVRO treatment unit, if necessary

(limit value: 3000 h or 5 years).

 Clean the solenoid valves - check their function.
 Check the flow volumes and recalibrate the water meter.
 Check the state of the entire system and check for tightness.
 Mechanical resp. electrical functional and performance check of all

aggregates (pumps, valves).

 Prepare a written maintenance log on the state and function of the

system and the maintenance work performed, incl. evaluation and
assessment of the operating values and water analysis results.

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

Note: The maintenance work performed must be documented in the
checklist, refer to appendix "Operation log"

3.1 Operation log

The operation log is located in chapter H, point 4 of this operation
manual. When commissioning the system, make sure to record all
data on the cover sheet of the operation log and fill in the first column
of the checklist.

The customer service technician will fill in a column of the check list
whenever maintenance is performed. This document provides
evidence of proper maintenance.

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4 | Operation log

Customer

Name: ........................................................................

Address: ....................................................................

..................................................................................

..................................................................................

Reverse osmosis system AVRO 125

(Please check appropriate box)

Serial number

...............................................................

Installed by

..................................................................

Filter 80 µm: Make/type

.............. / ..................................

System separator: Make/type

...... / ..................................

Activated carbon filter: Make/type

. / ..................................

Filter 5 µm: Make/type

................ / ..................................

TL

TS

Connection data: Drai n connecti o n DIN 1988

yes no

(Please check appropriate box)

Floor drain available

yes no

Line before

AVRO 125 TS/TL

Galvanised
Copper
Plastic

..........................

Height of drain . . . . . cm from bottom edge of the system

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Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. .......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after

before/after before/after

before/after before/after

before/after

before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

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Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

......................................................................................................

......................................................................................................

Work time certificate (no.): ...........................................................

Date/signature ..............................................................................

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Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. .......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after

before/after before/after before/after before/after before/after before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

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Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

......................................................................................................

......................................................................................................

Work time certificate (no.): ...........................................................

Date/signature ..............................................................................

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Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. .......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after before/after before/after before/after before/after before/after before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

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Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

......................................................................................................

......................................................................................................

Work time certificate (no.): ...........................................................

Date/signature ..............................................................................

Reverse osmosis system

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Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. .......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after before/after before/after before/after before/after before/after before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

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Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

......................................................................................................

......................................................................................................

Work time certificate (no.): ...........................................................

Date/signature ..............................................................................

Reverse osmosis system

AVRO 125 TS/TL

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56

Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. ......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after before/after before/after before/after before/after before/after before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

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Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

........................................................................................................................................................................................

Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

......................................................................................................

......................................................................................................

Work time certificate (no.): ...........................................................

Date/signature ..............................................................................

Reverse osmosis system

AVRO 125 TS/TL

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Maintenance work on reverse osmosis system AVRO 125 TS/TL

Checklist

Please enter measured values. Confirm checks with OK or enter repair work performed.

Maintenance performed
without replacement of
module

Maintenance performed

with replacement of
module

Maintenance performed with

replacement of AVRO treatment module

Module no. ......................... Treatment module no. .............................

Measured values

Water volumes and water qualities before the replacement of the module / after the replacement of the module or

in case of maintenance

Pump

pressure

[bar]

Conductivity

[S/cm]

Total

hardness

[dH]1)

Carbonate

hardness

[°cH]2)

Temperature

[C]

Volume flow

[l/h]

Recovery

[%]

before/after before/after before/after before/after before/after before/after before/after

/

Feed water / / / / /
Permeate / / / / /

Concentrate / / / / / . . . . . % / . . . . . %

Acknowledgement Remarks

Water meter reading upstream of the system [m³]
Inlet water pressure (2.5 - 4 bar) checked
Filter element replaced (80 µm / 5 µm)
Settings of electronics checked
Remaining AVRO maintenance interval

(chapter F 2.1)

[h]

Operating hours (chapter F, 2.1)
Run time of high-pressure pump

(code 245, par. c)

[h]

Run time of pressure booster pump
(code 245, par. d)

[h]

Permeate volume produced
(code 245, par. E)

[m³]

Concentrate volume generated
(code 245, par. F)

[m³]

Blended water quantity
(code 245, par. G)

[m³]

AVRO treatment current intensity
(code 245, par. I)

[mA]

Error memory
(code 245, par. 1..9)

[Er]

1)

1°dH = 1.78°f = 0.178 mmol/l

2)

1°cH = 0.36 mmol/l

Reverse osmosis system

A

VRO 125 TS/TL

Order no. 185 752 945-inter Edited by: nkes-mrie :\BA-752945-INTER_185_AVRO_125.DOCX

59

Acknowledgement Remarks

All electrical lines checked for external damage
All hoses and connections checked for external

damage
Inlet and flushing solenoid valve checked for

leaks – cleaned if necessary
Pressure switch of high-pressure pump checked

for function
Pressure switch – switching hysteresis
Pressure booster checked/adjusted
Conductivity sensor checked/c leaned
Visual check of electronics board
System checked for tightness
Load units reset

Miscellaneous

Remarks: ........................................................................................................................................................................

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Commissioning specialist / CS technician: ...................................

Company: ....................................................................................

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Work time certificate (no.): ...........................................................

Date/signature ..............................................................................