Grunbeck MXA 1 1/4" User manual

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Filter | GENO-backwash filter MXA 1"- MXA DN 100
Operation manual

General Contact
Germany
International Sales
Phone [phone]
Technical Service
Phone [phone]
Fax [phone]
Availability
Monday to Thursday
7:00 am - 6:00 pm
Friday
7:00 am - 4:00 pm
Copyright
The manufacturer reserves the copyright to this operation manual. Without the written consent of
Grünbeck Wasseraufbereitung GmbH, no part of this manual may be reproduced in any way, nor
may any part be processed, duplicated or distributed using electronic systems.
Non-compliance with the aforementioned stipulations shall be subject to compensation for damages.
We reserve the right to technical modifications.
© by Grünbeck Wasseraufbereitung GmbH
Translation of the original operation manual
Edition of the operation manual: July 2019
Order no.: TD3-AM000en_014

Table of contents
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Table of contents
1About this manual..................................................... 4
1.1 Other applicable documents ...................................... 4
1.2 Target group .............................................................. 4
1.3 Storage of documents................................................ 4
1.4 Symbols used ............................................................ 4
1.5 Typographical conventions ........................................ 5
1.6 Validity of the manual ................................................ 5
1.7 Type plate .................................................................. 6
2Safety ......................................................................... 7
2.1 Safety measures........................................................ 7
2.2 Technical safety instructions...................................... 8
2.3 Regulations................................................................ 8
2.4 Responsibilities of the specialist installer and/or
the specialist company .............................................. 8
2.5 Responsibilities of the owner/user ............................. 9
2.6 Product-specific safety instructions ........................... 9
2.7 Packaging, shipping and storage............................... 9
3Product description ................................................ 10
3.1 Intended use ............................................................ 10
3.2 Foreseeable misuse ................................................ 10
3.3 Product components................................................ 11
3.4 Functional description.............................................. 12
3.5 Accessories ............................................................. 14
4Installation ............................................................... 15
4.2 Requirements regarding the installation site............ 17
4.3 Checking the scope of supply.................................. 18
4.4 Installing the product................................................ 19
5Control unit GENO-RS-tronic................................. 28
5.1 Components of the control unit................................ 28
5.2 Overview of display.................................................. 30
5.3 Navigating the control unit ....................................... 33
5.4 Menu structure......................................................... 36
5.5 Programming levels ................................................. 36
6Start-up .................................................................... 38
6.1 Preparations .............................................................38
6.2 Starting up the product .............................................39
6.3 Handing over the product to the owner/user ............39
7Operation..................................................................40
7.1 Information in the basic display ................................40
7.2 Setting parameters in the User level.........................41
7.3 Setting parameters in the Programming level ..........42
8Cleaning, inspection, maintenance........................46
8.1 Cleaning ...................................................................46
8.2 Intervals ....................................................................47
8.3 Inspection .................................................................47
8.4 Maintenance .............................................................48
8.5 Spare parts ...............................................................53
8.6 Wearing parts ...........................................................53
9Troubleshooting.......................................................54
9.1 Display messages ....................................................54
9.2 Other malfunctions ...................................................57
9.3 Manually closing the filter’s suction nozzle ...............59
10 Disposal....................................................................62
10.1 Packaging.................................................................62
10.2 Product .....................................................................62
11 Technical specifications .........................................63
11.1 Pressure loss curves ................................................65
12 Operation log............................................................67
12.1 Start-up log ...............................................................67
12.2 Maintenance .............................................................68
EU Declaration of Conformity ..........................................69
Index...................................................................................70

About this manual
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1 About this manual
1.1 Other applicable documents
The following documents shall be considered as applicable documents for the GENO
backwash filter as well:
●For Grünbeck's technical service/authorised service company:
Technical service manual GENO-backwash filter MXA
Order no.: TD4-AM001en
●The manuals of all accessories used.
1.2 Target group
This manual is intended for specialist installers and owners/users.
1.3 Storage of documents
Keep this manual and all other applicable documents, so that they are available when
needed. Make sure that your specialist installer enters the proper start-up and annual
maintenance in chapter 12 of the operation log.
1.4 Symbols used
This symbol identifies instructions that you must comply with for your own personal safety
as well as to avoid damage to property.
This symbol identifies instructions that you must comply with in order to avoid damage to
property.
This symbol identifies important information about the product or its handling.
This symbol identifies work that may only be carried out by a specialist installer. In
Germany, the installation company must be registered in an installation directory of a water
supply company acc. to §12(2) AVB Wasser V (German Ordinance on General Conditions
for the Supply of Water).
This symbol identifies work that may only be carried out by Grünbeck's technical
service/authorised service company or by specialist installers trained by Grünbeck.
This symbol identifies work that may only be carried out by electronically trained personnel
according to the VDE guidelines or according to the guidelines of similar local institutions.

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1.5 Typographical conventions
The following typographical conventions are used in this manual:
Designation
Depiction
Instruction
Single-step instruction or chronological
sequence of steps does not matter
►Action
Instruction
Multi-step instruction and chronological
sequence of steps is important
1. First action
a first step
b second step
2. Second action
Result following an instruction
» Result
Lists
●Listed item
•Listed sub-item
Menu paths
Status level>Menu level>Submenu
Display texts
Display text
Operating elements
Button/key
1.6 Validity of the manual
This manual applies to the following products:
●GENO-backwash filter MXA 1" (DN 25)
●GENO-backwash filter MXA 1¼" (DN 32)
●GENO- backwash filter MXA 1½ (DN 40)
●GENO-backwash filter MXA 2" (DN 50)
●GENO-backwash filter MXA DN 65
●GENO-backwash filter MXA DN 80
●GENO-backwash filter MXA DN 100

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1.7 Type plate
The type plate is located on the front of the filter housing.
Please specify the data shown on the type plate in order to speed up the processing of your
inquiries or orders.
►Therefore, add the serial number in order to have the necessary data available at
all times.
Item
Designation
Item
Designation
1
Observe operation manual
2
DVGW test mark
3
EAC mark
4
CE mark
5
Nominal connection diameter
6
Nominal flow
7
Nominal pressure
8
Max. water temperature
9
Max./min. pore size
10
QR code
11
Product designation
12
Data matrix code
13
Order no.
14
Serial no.
●Product designation: GENO-backwash filter MXA_______
●Order number: 107 ______
●Serial no.: ________________

Safety
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2 Safety
WARNING: Contamination of drinking water due to improper handling.
●Risk of infectious diseases.
►Have the installation, start-up and annual maintenance carried out by specialist
installers only.
2.1 Safety measures
●Carefully read this manual before operating your product.
●Install the product in a frost-free room. Otherwise, the system may suffer
irreparable damage. Water damage may occur as a result.
●Only use genuine spare parts for maintenance or repair. If unsuitable spare parts
are used, the warranty for your product will be void.
●Do not use any products which have a damaged mains cable. This can lead to
injuries due to electric shock. Have damaged mains cables replaced without delay.
●Keep your product permanently connected to the power and water supply.
●Comply with the hygiene instructions in chapter 8. Failure to comply can result in
microbiological contamination of your drinking water installation.
●Only have persons working on your product that have read and understood the
present manual and that are qualified to do such work due to their vocational
training.
●Only operate the product if all components are installed properly.
●Safety equipment must never be removed, bridged or otherwise tampered with.
●Observe the maintenance intervals (refer to chapter 8.2). Failure to comply can
result in microbiological contamination of your drinking water installation.
●This product can be used by children over 8 years of age and persons with limited
abilities or lack of experience if they are supervised or instructed in the safe use of
the product and understand the resulting hazards.
●Cleaning and maintenance must not be carried out by children.
●Keep the product away from children.

Safety
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2.2 Technical safety instructions
This manual contains information and instructions that you must comply with for your own
personal safety as well as to avoid damage to property. The information and instructions are
highlighted by a warning triangle and have the following structure:
CAUTION: Type and source of danger.
●Possible consequences
►Preventive measures
The following signal words were defined subject to the degree of danger and may be used in
the present document:
●DANGER means that death or serious injury will result.
●WARNING means that death or serious injury may result.
●CAUTION means that minor bodily injuries may occur.
●NOTE (without warning triangle) means that damage to property may occur.
2.3 Regulations
When installing and starting up the system, amongst others, comply with the following
regulations and guidelines:
●Statutory regulations on environmental protection
●Provisions of the employers' liability insurance companies
●DIN EN 806 Specifications for installations inside buildings conveying water for
human consumption
●VDI 6023 Part 5 - 7 Specifications for installations inside buildings conveying water
for human consumption
●Low Voltage Directive 2014/35/EU, Appendix IV
2.4 Responsibilities of the specialist installer and/or the
specialist company
Comply with the following instructions to ensure the proper and safe functioning of the
product:
●Only perform activities described in this manual.
●Perform all activities in accordance with all applicable standards and regulations.
●Brief the owner/user on the function and operation of the product.
●Advise the owner/user of the maintenance of the product.

Safety
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●Inform the owner/user about possible dangers that can arise during the operation
of the product.
●Fill in the operation log (refer to chapter 12).
2.5 Responsibilities of the owner/user
Comply with the following instructions to ensure the proper and safe functioning of the
product:
●Arrange for a specialist installer to carry out installation, start-up and maintenance.
●Have the product explained to you by the specialist installer.
●Only perform activities described in this manual.
●Do not carry out any activities that are explicitly designated for a specialist installer.
●Only use this product as intended.
●Make sure that the required inspection and maintenance work is carried out.
●Keep this manual.
2.6 Product-specific safety instructions
WARNING: If the intervals for inspection and backwash are not observed, the filter element
will become excessively polluted.
●Health risk due to contamination of the drinking water.
►Observe the intervals and recommendations for inspection and backwash of the
filter element.
2.7 Packaging, shipping and storage
Transport
►Transport the filters only in their original packaging.
Storage
►Protect the product from:
●Damp, moisture, environmental impacts such as wind, rain, snow, etc.
●Frost, direct sunlight, severe heat exposure
●Chemicals, dyes, solvents and their vapours

Product description
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3 Product description
3.1 Intended use
●GENO-backwash filters MXA are designed for the filtration of drinking and
industrial water.
●The filters are suitable for the filtration of process, boiler feed, cooling and air
conditioning water –only in partial flow.
●The filters are suitable for water temperatures up to 90 ºC.
●The filters can be used in the pressure range.
●The filters are designed according to the stipulations of DIN EN 13443-1 and
DIN 19628 and are intended for installation into drinking water pipes according to
DIN EN 806-2 (installation immediately downstream of the water meter).
●The filters protect the water pipes and connected water-carrying system parts from
disturbances and corrosion damage due to undissolved impurities (particles), such
as rust particles, sand, etc.
3.2 Foreseeable misuse
●The filters cannot be used in the negative pressure range.
●The filters are not suitable for circulation water that has been treated with
chemicals.
●The filters are neither suitable for oils, greases, solvents, soaps and other
lubricating media, nor for the separation of water-soluble substances.
●Do not install the filters in vertical water pipes.

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3.3 Product components
Item
Designation
Item
Designation
1
Shock-proof plug, 1.5 m cable
2
Differential pressure sensor
3
Cover
4
Water meter screw connection
5
Filter housing
6
Pressure gauge
7
Brush
8
Sieve bottom
9
Suction nozzle
10
Filter element
11
Gasket
12
Filter funnel
13
Backwash water connection
14
Flange connection
15
Control unit GENO-RS-tronic

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3.4 Functional description
The unfiltered raw water flows into the filter from the inlet side and then from the inside out
through the filter element and to the pure water outlet.
Thus, foreign particles of a size > 100 µm are retained.
Depending on their size and weight, the foreign particles stick to the filter element or they fall
straight down into the filter funnel.
The backwash process is activated by the GENO-RS-tronic control unit and carried out by
the drive unit on the filter head. The lower suction nozzle is lifted and the drain outlet is open.
During the rotating motion, the brush brushes over the filter surface of the filter element. The
filter element is cleaned.
The impurities are removed by the brush and the suction nozzle sucks them into the drain
outlet.

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3.4.1 Backwash with the GENO-RS-tronic control unit
The GENO-RS-tronic control unit activates time and differential pressure controlled
backwash processes.
Apart from a time interval for the activation of a backwash, an off-period during which no
backwash processes may take place can also be defined.
An actuator opens the backwash water outlet. Initially, in clocked operation and then with
continuous rotation.
The rotation triggers the contact of a microswitch via a cam disc. The microswitch sends
pulses to the control unit. After several pulses, the control unit reverses the direction of
rotation and closes the backwash water outlet.
If the rotary motion is blocked by dirt or wear and tear, the control unit detects this and
responds automatically.
If the control unit cannot resolve the issue independently, a corresponding error message is
displayed (refer to chapter 9).
The control unit features a voltage-free fault signal contact and a voltage-free contact for
remote monitoring. A backwash in progress is signalled via the voltage-free contact.
The control unit monitors the number of backwashes. It provides - sometimes in conjunction
with a timed maintenance interval - information on the remaining number of backwashes in
the current maintenance interval via a bar graph in the display.

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3.5 Accessories
You can retrofit your product with additional accessories. Please contact your local
Grünbeck representative or Grünbeck’s headquarters in Hoechstaedt for more details (refer
to www.gruenbeck.com).
Designation
Order no.
1" / 1¼"
1½" / 2" / DN 65
DN 80 / DN 100
50 µm filter element
107 052
107 053
107 054
200 µm filter element
107 072
107 073
107 074
500 µm filter element
107 082
107 083
107 084
Illustration
Product
Order no.
Drain connection DN 50 acc. to DIN EN 1717
with integrated siphon
188 875
Safety valve for MXA
GENO-RS-tronic-controlled, normally closed
solenoid valve.
Is installed at the backwash water outlet and
prevents inadmissible water leakage during a
backwash process, e.g. in case of a power
failure.
107 850

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4 Installation
The installation of a filter represents a major intervention into the drinking water system and
may only be performed by a specialist installer.
In accordance with DIN EN 806-2 and DIN EN 1717, the product is installed in the water pipe
downstream of the water meter and upstream of distribution pipes or the systems to be
protected.
NOTE: Significant temperature differences occurring when the product is moved from one
location to another can lead to moisture forming on electronic components within the
control unit.
●Possible malfunction of the control unit during initial start-up.
►We recommend unpacking the product prior to installation and allowing it to rest
at the installation site for 1 hour without being used.
» Possible moisture formation on electronic components inside the control unit can
dry off.

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GENO-backwash filter MXA with screw connections
GENO-backwash filter MXA with flange connections
Item
Designation
Item
Designation
1
Inlet shut-off valve
2
Outlet shut-off valve

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4.2 Requirements regarding the installation site
Observe local installation directives, general guidelines and technical specifications.
●The installation site must be frost-proof and ensure the filter's protection from
chemicals, dyes, solvents, vapours and direct sunlight.
●A drain connection (DN 50) must be available to discharge the backwash water.
●The installation room must provide a floor drain. If no floor drain is available, an
appropriate safety device must be installed in order to prevent water damage. We
recommend using a protectliQ:A.
●The installation site must be easily accessible for maintenance purposes.
●A shock-proof socket is required within a distance of approx. 1.2 m of the system.
NOTE: Power failure during the backwash process.
●Backwash will not be completed if the electrical power supply is interrupted.
●The backwash process continues until it is terminated manually.
►Do not connect the socket with light and heating switches.

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4.3 Checking the scope of supply
Item
Designation
Item
Designation
1
Control unit GENO-RS-tronic
2
Water meter screw connection with gasket,
union nut
3
Filter with screw connections
4
Backwash water connection
5
Operation manual
6
Filter with flange connections
The filter is available with screw connections for sizes: 1" (DN 25), 1¼" (DN 32),
1½" (DN 40), 2" (DN 50)
The filter is available with flange connections for sizes: DN 65, DN 80, DN 100
►Check the scope of supply for completeness and possible damage.

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4.4 Installing the product
Only install the GENO-backwash filter MXA horizontally and without mechanical stress.
Please note the following points before installation:
●Installation only possible in horizontal position
●Free outlet and discharge of the backwash water without backpressure
4.4.1 Changing the direction of flow
►Check the flow direction given on site.
►If necessary, remount the filter as follows:
1. Unscrew the differential pressure sensor and the pressure gauges.
2. Rotate the filter by 180°.
3. Mount the differential pressure sensor and the pressure gauges.
» The filter has been modified for flow direction to the left.

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4.4.2 Installing the GENO-backwash filter MXA with screw connections
1. Install the pipe fitting into the pipe (the installation dimension must be:
190 mm for sizes 1", 1¼" and 206 mm for sizes 1½", 2").
2. Position the filter (note the marking for the flow direction on the filter).
3. Tighten the filter at the pipe fittings using an open-ended wrench without applying
mechanical stress
» The filter is mounted.