Grunbeck GENO-Multi-LF User manual

Operation manual
Conductivity measuring device
GENO-Multi-LF
Edition March 2021
Order no. 702 959-en_085

Conductivity measuring device
GENO-Multi-LF
Order no. 702 959-en_085 Edited by: fwir/mrie G:\BA-702959-EN_085_GENO-MULTI LF.DOCX
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Table of contents

The operation manual consists of several chapters, which are listed
below.
A General.........................................................................
5
1 Preface
2 How to use this operation manual
3 General safety information
4 Shipping and storage
5 Disposal of used parts and consumables
B Basic information........................................................
9
1 Laws, regulations, standards
2 Intended use
C Product description ....................................................
10
1 Type plate
2 GENO-Multi-LF components
3 Functional description
4 Technical specifications
5 Intended use
6 Application limits
7 Scope of supply
D Installation ...................................................................
14
1 | General installation instructions
2 | Preliminary work
3 | How to connect the measuring cell adapter
4 | Electrical connection
E Operation .....................................................................
19
1 Introduction
2 Key functions
3 Operating performance
4 Deviating configuration,
recalibration: Code 290
5 Measured value – Graph: Code 245 (display only)
F Troubleshooting..........................................................
24
G Maintenance and care.................................................
25
1 Basic Information
2 Inspection
3 Maintenance
4 Cleaning the GENO-Multi-LF
Drilling template

Conductivity measuring device
GENO-Multi-LF
Order no. 702 959-en_085 Edited by: fwir/mrie G:\BA-702959-EN_085_GENO-MULTI LF.DOCX
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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.
-Subject to modifications in line with technical advances-
Reprints, translations into foreign languages, electronic storage or copy-
ing of this operation manual, including extracts, 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-Str. 1 •89420 Hoechstaedt; Germany
Phone [phone] •Fax [phone]
www.gruenbeck.com •[e-mail]
Print: Grünbeck Wasseraufbereitung GmbH
Josef-Grünbeck-Str. 1, 89420 Hoechstaedt; Germany

Conductivity measuring device
GENO-Multi-LF
Order no. 702 959-en_085 Edited by: fwir/mrie G:\BA-702959-EN_085_GENO-MULTI LF.DOCX
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EU Declaration of Conformity
This is to certify that the system designated below complies with the safety and health requirements
of the applicable European Directives in terms of its design, construction and execution.
This certificate will become void if the system is modified in a way not approved by us.
Manufacturer:
Grünbeck Wasseraufbereitung GmbH
Josef-Grünbeck-Str. 1
89420 Hoechstaedt
Germany
Responsible for documentation:
Markus Pöpperl
System designation:
Conductivity measuring device
System type:
GENO-Multi-LF
Serial no.:
Refer to type plate
Applicable directives:
RoHS 2011/65/EU
Low Voltage (2014/35/EU)
EMC (2014/30/EU)
Applied harmonised standards,
in particular:
DIN EN 61000-6-2:2006-03
DIN EN 61000-6-3:2011-09
Applied national standards
and technical
specifications,
in particular:
DIN EN 61010-1:2011-07
Location, date and signature
Hoechstaedt, 11.11.2019 i. V.
Markus Pöpperl
Dipl. Ing. (FH)
Function of signatory:
Head of Technical Product Design

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GENO-Multi-LF
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A General
1 | Preface
Thank you for choosing a Grünbeck product. Backed by decades of ex-
perience in the area of water treatment, we provide custom-made solu-
tions for all kind of processes.
Drinking water is classified as food and requires particular care. There-
fore, always ensure the required hygiene in operating and maintaining
systems involved in the drinking water ordinance. 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 reliable operation over many years, provided you treat your
water treatment system with the required care. This operation manual
assists you with important information. Therefore, please read the com-
plete manual before installing, operating or maintaining your system.
Customer satisfaction is our primary aim, and providing customers with
qualified advice is crucial at Grünbeck. If you have any questions con-
cerning the present product, possible extensions or general water and
waste water treatment, our field staff, as well as the experts at our head-
quarters in Hoechstaedt, are available to help you.
Advice and assistance
For advice and assistance please contact your local representative (refer
to www.gruenbeck.com). In case of emergency, please get in touch with
our service hotline at [phone]. We can connect you with the
appropriate expert more quickly if you provide the required system data.
In order to have this information handy at all times, please copy the data
indicated on the type designation plate to the table in chapter C-1, para-
graph 1.
2 | Notes on using the operation manual
This operation manual is intended for operators of our measuring equip-
ment. 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. Locate 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 operating instructions.

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3 | General safety information
3.1 Symbols and notes
Important information in this operation manual is emphasised by sym-
bols. 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, major damage to property or inadmissible im-
purities in the drinking water.
Warning! Failure to adhere to this information may 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 characterises information and tips that make your
work easier.
Tasks with this symbol may only be performed by Grünbeck's tech-
nical 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 may only be performed by water suppliers or
approved installation companies. In Germany, the installation com-
pany must be registered in the installation directory of a water sup-
plier according to Section 12(2) AVBWasserV (German Ordinance on
General Conditions for the Supply of Water).

Conductivity measuring device
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3.2 Operating person-
nel
Only persons who have read and understood this operation manual are
permitted to work with the measuring device. The safety instructions in
particular are to be strictly adhered to.
3.3 Intended use
The measuring device may only be used for the purpose outlined in the
product description (chapter C). The guidelines in this operating manual
as well as the applicable local guidelines concerning the drinking water
protection, accident prevention and occupational safety must be ad-
hered to.
In addition, appropriate application also implies that the measuring de-
vice is only allowed to be operated when it is in proper working order.
Any errors must be eliminated at once.
3.4 Protection from water damage
Warning! In order to properly protect the installation site from water
damage:
a) a sufficiently dimensioned floor drain system must be available or
b) a water stop device (see chapter C, optional features) must be in-
stalled.
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 parts of the system! Have qualified experts replace damaged
cables immediately.
Danger due to mechanical energy! System parts may be subject to over-
pressure. Danger of injury and damage to property due to escaping wa-
ter 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
should be installed by a specialist company only. Strictly adhere to the
operation manual! Ensure that there is sufficient flow. Adhere to the per-
tinent guidelines when starting up the system after extended periods of
standstill. Perform inspections and maintenance at the intervals speci-
fied!

Note: By concluding a maintenance contract, you ensure that all of
the required tasks are performed on time. You may perform the in-
terim inspections yourself.

Conductivity measuring device
GENO-Multi-LF
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4 | Shipping and storage
Caution! The measuring device can be damaged by frost or high
temperatures. In order to avoid damage of this kind:
Protect from frost during transportation and storage!
Do not install or store the measuring device next to objects which ra-
diate a lot of heat.
5 | Disposal
Comply with the applicable national regulations.
4.1 Packaging
Dispose of the packaging in an environmentally sound manner.
4.2 Product
If this symbol (crossed out waste bin) is on the product, European Di-
rective 2012/19/EU applies to this product. This means that this prod-
uct or the electric and electronic components are not allowed to be
disposed of in the household waste.
Dispose of electrical and electronic products or components in an en-
vironmentally sound manner.

For information on collection points for your product, contact your
municipality, the public waste disposal authority, an authorised body
for the disposal of electrical and electronic products or your waste
collection service.

Conductivity measuring device
GENO-Multi-LF
Order no. 702 959-en_085 Edited by: fwir/mrie G:\BA-702959-EN_085_GENO-MULTI LF.DOCX
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B Basic information
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 con-
sideration the current regulations and stipulates information that you will
need for the safe operation of your water treatment system.
Among other things, the set of rules stipulate that
•only approved companies are permitted to make major modifica-
tions to water supply facilities
•and that checks, inspections and maintenance on installed devices
are to be performed at regular intervals.
2 | Intended use
The conductivity measuring device GENO-Multi-LF is used to measure
the conductivity of fully demineralised water. A digital display enables di-
rect reading of the fully demineralised water quality. If the set upper limit
value is exceeded, warning devices (e.g. audible signal) and switch-off
devices (optional accessory solenoid valve, order no. 707 055) can be
controlled.

Conductivity measuring device
GENO-Multi-LF
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C Product description
1 | Type plate
The type plate is located to the right on the outside of the conductivity
measuring device. To speed up the processing of your enquiries or or-
ders, please specify the data shown on the type plate of your device
when contacting Grünbeck.
Fig. C-1: Type plate GENO-Multi-LF
2 | GENO-Multi-LF components
Conductivity measuring device
Measuring cell adapter
Temperature measuring cell
Cord transformer
Conductivity measuring cell
Type plate
Fig. C-2: Components of the GENO-Multi-LF
1
4
2
5
3
6

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3 | Functional description
3.1 Conductivity meas-
urement
The electrical conductivity is a measure of the ion concentration of a
measured solution as a total parameter. The more salts or ions are dis-
solved in the water, the greater its conductivity. The conductivity there-
fore provides a statement on the salt load or the purity level of water. In
industrial production processes, the conductivity measurement is used
for process control purposes.
The conductivity is normally measured in the µS/cm scale. The scale for
aqueous solutions normally begins at a conductivity level of 0.05 μS/cm
(25 °C) for the purest water. The conductivity of natural water such as
drinking water or surface water is in the range from 100 - 1000 μS/cm.
4 | Technical specifications
Table C-1: Technical data
GENO-Multi-LF
conductivity measuring device
Connection data
Connection diameter
¾"
Voltage supply
[V]
230/24 ~ (*)
Frequency
[Hz]
50
Power input
[VA]
25
Protection/protection class
IP 54/ or
Dimensions and weights
Dimensions (L x W x D) (housing)
[mm]
160 x 154 x 61
Operating weight (incl. transformer, adapter)
[kg]
1.6
System data
Accuracy of indicated value
[%]
5
Measuring range standard measuring cell (k =
0.6
1
/cm)
[µS/cm]
0.0 up to 99.9
Automatic temperature compensation
can be switched off
Connection of a solenoid valve
24 V~ / 13 VA
Output voltage-free limit value contact
230 V~ / 1 A
Ambient data
Max. ambient temperature
[°C]
40
Order no.
702 842
(*) operation with protective low voltage

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5 | Intended use
The conductivity measuring device GENO-Multi-LF is used in combina-
tion with mixed bed cartridges desaliQ:BA to monitor the conductivity of
fully demineralised water at the pure water outlet.
The conductivity measuring device is only permitted to be operated
when all components have been properly installed. Safety devices must
never be removed or otherwise tampered with.
The designated application also includes the information contained in
this operation manual and all safety regulations that apply at the installa-
tion site being complied with, as well as the maintenance and inspection
intervals being observed.
6 | Application limits
The maximum display range of the conductivity from 0.0 to 99.9 µS/cm
limits the water quality being tested (see also table E-1).

Note: Fully demineralised water (FD water) is not drinking water.
7 | Scope of supply
7.1 Standard
equipment
•Conductivity measuring device.
•Cord transformer.
•Fastening materials for wall mounting.
•Measuring cell adapter with conductivity measuring cell.
and temperature measuring cell.
•Operation manual.
7.2 Optional accessories

Note: It is possible to retrofit the conductivity measuring device with
accessory components. Please contact your local Grünbeck repre-
sentative or Grünbeck’s headquarters in Hoechstaedt for more infor-
mation.
desaliQ hose set
Consisting of: two drinking water hoses of 1.5 m
in length (DVGW W270 and KTW-A certified).
The raw and pure water hose each have a hose
fitting with 3/4" union nuts (nickel-plated brass).
707 850

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Solenoid valve
The solenoid valve is only provided as an option
for GENO-Multi-LF. The solenoid valve (closed in
de-energised state) interrupts the pure water line
when the set conductivity limit value has been ex-
ceeded.
707 055

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D Installation
The work described below is only permitted to be performed by
trained experts. We recommend having Grünbeck‘s technical ser-
vice/authorised service company start up the system.
1 | General installation information
Caution! Do not install the conductivity measuring cell in the vicinity
of powerful magnetic fields or cables carrying power current (measur-
ing inaccuracy).
•Please observe the local installation guidelines and the general
guidelines.
•The installation type must be accessible for maintenance work,
flood and frost-proof and ensure the system's protection from chem-
icals, dyes, solvents and vapours.
2 | Preliminary work
1. Unpack the conductivity measuring device.
2. Check for completeness and undamaged condition.
3. Mount the conductivity measuring device to the wall.
2.1 Wall mounting
Fig. D-1: Housing lid
The drilling template (see appendix) is used to establish the positions of
the four fixing holes for the conductivity measuring device at the required
location. Use a masonry drill (6 mm) to drill the four holes approximately
40 mm deep into the wall. Insert dowels and open the two side housing
covers (see Fig. D-1) on the GENO-Multi-LF. The four enclosed fas-
tening screws can be used to screw the conductivity measuring device
to the wall.
The separate power supply unit can then be attached in the immediate
vicinity using suitable screws (not included in the scope of supply).

Conductivity measuring device
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
Note: When wall mounting the conductivity measuring device, the re-
quired location of the mixed bed cartridge desaliQ:BA should be taken
into account. The maximum permitted distance between the conduc-
tivity measuring device and mixed bed cartridge desaliQ:BA is 1.6 m
due to the cable length. For the voltage supply of the conductivity
measuring equipment, a shock-proof socket (230 V / 50 Hz) must be
fitted at an approximate distance of 1.6 m.
4. Remove both caps from the measuring cell adapter.

Note: Please do not dispose the two yellow plastic caps, and instead
use as a safety device in the event of standstill times or transport.

Conductivity measuring device
GENO-Multi-LF
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3 | How to connect the measuring cell adapter
1. Mount the solenoid valve on the clean water connection.
2. Mount the measuring cell adapter on the clean water connection.
3. Mount/set up water treatment products (e.g. mixed-bed cartridge
desaliQ:BA).
4. Connect hoses.

Note: Together with the solenoid valve accessory (order no. 707 055),
the following convenient configuration can be attached to a filling sec-
tion thermaliQ:FB13i (see Fig. D-2).
Drinking water filter (e.g. pureliQ:RD)
Solenoid valve
Filling section thermaliQ:FB13i
Mixed bed cartridge desaliQ:BA
Fig. D-2: Installation example conductivity measuring device GENO-Multi-LF
1
3
2
4

Conductivity measuring device
GENO-Multi-LF
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4 | Electrical connection
Caution! Before opening the housing, unplug the cord transformer!
Fig. D-3: Covers
After opening the left and right covers (Fig. D-1), the four lid fixing
screws can be opened and the housing lid (Fig. D-4) folded downwards.
The conductivity measuring cell and the temperature sensor are pre-
connected at the factory and for that reason are not permitted to be
changed.
Caution! The socket for the transformer mains cable must be easily
accessible, so that unplugging is not made more difficult!
Fig. D-4: Housing lid
To connect the alarm contact or the solenoid valve (option order no. 702
840), actuate the corresponding terminal opening using a flat-head
screwdriver with a max. 3 mm blade.

Conductivity measuring device
GENO-Multi-LF
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4.1 Wiring diagram
Fig. D-5: Position of the connecting terminals on the circuit board
Max. 230 VAC/1 A
Max. 13 VA
Reserved terminals
Tempera-
ture:
PT100
Conductivity:
Shielding
LW sensor
LW sensor

Conductivity measuring device
GENO-Multi-LF
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E Operation
1 | Introduction
Warning! Incorrect operation and settings may lead to hazardous op-
erating states which cause injury, illness or damage to property.
Only make the settings described in this chapter.
All other work at the control unit, in particular modifications to the rec-
ords, may only be performed by Grünbeck's customer service/author-
ised service company.
2 | Key functions
Fig. E-1: Front foil

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Key
Display of parameters
In standard mode:
•Switches to the limit value programming level (press for > 2 sec.).
•Acknowledges malfunctions.
On the limit value programming level:
•Opens a limit value to change it (numeric display flashing).
Saves and closes the limit value (numeric display stops flashing).
On code levels 290 and 245:
•Returns to the previous parameter.
•Reduces the numerical values while the numerical display is flashing.
In standard mode:
Calls up the Info level and switches to the next Info value.
On code levels 290 and 245:
•Switches to the next parameter.
•Increases the numerical values while the numerical display is flash-
ing.
•Closes open parameters without saving them (numerical display
stops flashing) and the previously set value is maintained.
•Exits the limit value programming level or the code level.
Key
Calls up info level from the basic display
Actual conductivity value, LED "µS/cm" is lit
Press once: Limit value is displayed, "Max. µS/cm" LED is lit.
Press twice: Water temperature is displayed, "°C" LED is lit.
Press three times: Basic display actual conductivity value "µS/cm" LED is lit.
Key
Confirm a disturbance, "ALARM" LED is lit
Only acknowledge the error once the cause has been removed.
+