Condair CONDAIR SOFT User manual

Air humidification, dehumidification
and evaporative cooling
CONDAIR SOFT
water softening system
ASSEMBLY AND OPERATING
INSTRUCTIONS
Condair Soft water softening system
01.07.2021
20210701 EN

Property rights
This document and the information contained herein are the property of Condair GmbH. Unless manufacturer approval
has been granted in writing, the passing on and duplication of the manual (including extracts thereof) as well as the
utilization and passing on of its contents to third parties are not permitted. Violations are punishable and result in an
obligation to compensate for damages.
Liability
Condair GmbH shall not be liable for any damage caused by faulty installation, improper operation, or by the use of
components or equipment which are not approved by Condair AG.
Copyright notice
Copyright 2021, Condair GmbH, all rights reserved, subject to technical modications
Thank you for choosing Condair
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Installation site:
Model:
Serial number:

3
Table of Contents
1 General Safety Instructions 5
1.1 Explanation of symbols and instructions 5
1.2 Operator’s obligation 5
1.3 Sta󰀨 obligation 6
1.4 Sta󰀨 training 6
1.5 Intended use 6
1.6 Hazards in handling the system 6
1.7 Hazard-preventing protective devices and safety measures 7
1.7.1 Protective devices 7
1.7.2 Informal security measures 7
1.8 Safety instructions for maintenance work 8
1.9 Disposal of system components and operating materials 8
1.10 Disposal of system components and operating materials 8
1.11 Warranty and liability 8
1.12 Safety instructions for storage 9
2 Transportation and Storage 10
2.1 Transportation to the customer 10
2.2 Storage at the customer 10
2.3 Transportation to the installation site 10
2.4 Delivery scope 10
3 Technical Data / Product Description 11
3.1 Technical data 11
3.1.1 General data of the series 11
3.1.2 Special data of the sizes 11
4 Installation and Assembly 12
4.1 Installation 12
4.1.1 Installation site requirements 12
4.1.2 System installation 13
4.2 Assembly 13
4.2.1 Necessary qualication of the assembly personnel 13
4.2.2 Washing the gravel 13
4.2.3 Positioning the container 13
4.2.4 Filling in the gravel and resin 14
4.2.5 Assembling the control head and connection adapter on the pressure tanks 14
4.2.6 Establishing internal piping and water connections 14
4.3 Electrical connection 16
4.3.1 Necessary qualication of the assembly personnel 16
4.3.2 Establishing the electrical connections 16
5 Commissioning and Decommissioning 17
5.1 Commissioning 17
5.1.1 Inspecting the hydraulic 17
5.1.2 Commissioning 17
5.1.2.1 Preparations 17
Table of Contents

4
5.1.2.2 Set the control unit 17
5.1.2.3 Rinsing the lters 17
5.1.3 Establishing the operating state 18
5.2 Decommissioning 19
5.2.1 Short-term decommissioning (less than two weeks) 19
5.2.2 Long-term decommissioning (more than two weeks) 19
5.2.3 Recommissioning 19
5.2.3.1 Recommissioning after a short decommissioning period 19
5.2.3.2 Recommissioning after a long decommissioning period 20
6 Control Unit 21
6.1 Adjusting the control unit 21
6.1.1 Language, time and total hardness quick setting 21
6.1.2 Parameter setting 21
6.2 Operating displays 22
6.1.2 Parameter setting 22
6.3 Regeneration 22
6.3.1 Triggering immediate regeneration 22
6.3.2 Regeneration indicators 23
6.4 Power failure, notications and faults 23
6.4.1 Power failure 23
6.4.2 Notications 23
6.4.3 Faults 23
7 Faults and Fault Elimination 24
7.1 General instructions 24
7.1.1 Reporting faults to the manufacturer 24
7.1.2 Fault indication and reporting 24
7.2 Power failure, notications and faults 25
8. Logging, Maintenance, Servicing 26
8.1 Testing, measuring, logging 26
8.2 Operating log 26
8.3 Maintenance 28
8.3.1 Maintenance check-list 28
8.3.2 Maintenance log 29
8.3.3 Recommendations 29
9. Appendix 30
9.1 Soft control head 30
9.3 Electrical connection 31
9.4 Soft control unit setting value 32
9.4.1 Soft 60 – Size adjustment 32
9.4.2 Soft 120 – Size adjustment 35
9.4.3 Soft 200 – Size adjustment 38
9.4.4 Soft 320 – Size adjustment 41
9.4.4 Soft 400 – Size adjustment 44
9.5 system dimensions 47
9.6 Assembly structure (diagram) 53
Table of contents

5
1. General Safety Instructions
1.1 Explanation of symbols and instructions
These operating instructions contain important specications on the safe operation of the system.
These operating instructions, particularly the section on safety instructions, must be observed by all
those who carry out work on the system. This applies to the installation company as well as the system
operator. In addition, the special rules and regulations for accident prevention that apply to the usage
location must be observed.
The following symbols are used to indicate personal hazards and guidance on the proper handling of
the system in these operating instructions:
1.2 Operator’s obligation
The operator undertakes to ensure that all those working on the system
 are familiar with the basic health and safety and accident prevention regulations and have been
instructed in the handling of the system,
 have read and understood the safety section and the warnings in these operating instructions and
have conrmed this by their signature, and
 have their safety-conscious work checked at regular intervals.
DANGER!
This symbol indicates an imminent threat to personal health which may be fatal. Failure to observe
these instructions may result in serious health hazards or even life-threatening injuries.
WARNING!
This symbol indicates a potential threat to personal health which may be fatal. Failure to observe
these instructions may result in serious health hazards or even life-threatening injuries.
CAUTION!
This symbol indicates a potentially dangerous situation. Failure to observe these instructions may
result in minor injuries or property damage.
INSTRUCTION
This symbol provides important information on the proper handling of the system. Failure to observe
these instructions may result in faults on the system or in the vicinity.
General safety instructions

6
1.3 Sta󰀨 obligation
Prior to commencing work, all individuals who are commissioned to work on the system or carry out
such work independently undertake to:
  read the safety section and the warnings in these operating instructions and conrm by their
signature that they have understood them.
 observe the basic health and safety and accident prevention regulations.
When operating the system, the safety instructions must be strictly observed.
1.4 Sta󰀨 training
Only trained and instructed personnel may work on the system.
 The assembly, commissioning, operating, set-up, equipment, maintenance and servicing
responsibilities of the personnel must be clearly dened.
  Sta󰀨 members who have not as yet been trained may only work on the system under the
supervision of an experienced co-worker.
1.5 Intended use
The system may only be used for the desalination of drinking water, well water or surface water
which is free from particles and metal ions. The restrictions regarding the chemical analysis of the
feed water, pressure, temperature and ow rate specied in the technical data apply.
Intended use also includes
 observance of all instructions in the operating instructions and
 compliance with inspection and maintenance intervals.
The restrictions specied in the technical data apply with regard to the chemical analysis of the feed
water, pressure, temperature and ow rate.
The following are also deemed non-intended use: utilisation as lter (mechanical ltration without
regeneration with brine), storage tank (after removal of the ion exchanger material), pressure
reservoir. Furthermore, hot water may not be fed into the system.
1.6 Hazards in handling the system
 The system has been designed and manufactured in accordance with the state of the art
and the recognised safety regulations.
 The system must be installed in such a way that the operating and control elements are
easily accessible at all times. The floor, ceiling and walls must be level and clean.
Nevertheless, its use may pose a health hazard to the user or third parties or put their lives at
risk, or cause damage to the system itself or other property. The system is only to be used for
its intended purpose (see 1.5) and in a safe condition.
The following residual hazards exist:
General safety instructions

7
Water damage
 To prevent flooding due to leakage, the installation room must be equipped with a floor drain
and/or a leakage monitor with a corresponding alarm.
Electric shock
 Work on the electrical supply may only be carried out by a qualified electrician.
 Check the system’s electrical equipment on a regular basis. Any loose connections
or scorched cables must be removed immediately.
 The control cabinet must be kept locked at all times. Access is only granted
to authorized personnel.
 If work needs to be carried out on live parts, a second person must be called in
so that they can switch off the main switch as necessary.
 Do not touch the electrical components with wet hands.
 Disconnect the system from the power supply before working on electrical system parts.
Mechanical/hydraulic energy
 Some system parts are under overpressure of up to 25 bar.
 The system must be de-pressurised before repair or maintenance work is carried out.
Hygienically critical applications
 There is a risk of contamination of system components if the system has not been
adequately preserved. The preservation instructions must be observed.
Faults which could impair safety must be rectified immediately. This is ensured by the operator
himself or an operator-commissioned company.
1.7 Hazard-preventing protective devices
and safety measures
1.7.1 Protective devices
 Before switching on the system, all protective devices must be properly fitted and checked
to ensure they are in working order.
 Protective devices may only be removed after the machine has been switched
off and secured against being switched back on.
 The required personal protective equipment for the operating personnel must be provided
by the operator and worn by the operating personnel when they are working on the system.
 All existing protective devices must be checked regularly by the operator or an
operator-commissioned company.
1.7.2 Informal safety measures
 The operating instructions must be kept at the usage location permanently.
 In addition to the operating instructions, the generally applicable and local regulations
for accident prevention and environmental protection must be provided and observed.
 All safety and hazard notices on the system as well as the labelling of the operating
and control elements must be kept in legible condition.
General safety instructions

8
1.8 Safety instructions for maintenance work
 The operator must ensure that all maintenance, inspection and installation work is carried
out by authorised and qualified specialist personnel who have acquired the necessary
information by studying the operating instructions.
 Prior to all repair and maintenance work, the system must be switched off and secured
against unintentional start-up. The procedure for shutting down the system described in
the „Commissioning and Decommissioning“ section of the technical documentation must
be observed at all times.
 Before any work is started on the system’s electrical equipment, the corresponding section
must be checked to ensure that it is not live. In addition, the system must be secured
against being switched back on.
 Suitable protective clothing appropriate to the hazard level in question must be worn while
the work is being carried out.
 Immediately after completion of the work, all safety and protective devices must be
refitted or restarted.
 The steps described in the „Commissioning and decommissioning“ section must be
performed prior to recommissioning.
1.9 Disposal of system components and operating materials
The system components must be disposed of, if necessary also separately, in accordance with
the local regulations.
1.10 Unauthorized modification and production of spare parts
 Conversion or modifications to the system are only permitted following consultation with
the manufacturer.
 This also applies to control unit program changes.
 Original manufacturer-authorized spare parts are used for safety purposes.
 If other parts are used, the warranty becomes void and no liability is accepted for the
resulting consequences.
1.11 Warranty and liability
This product corresponds to the state of the art and has been designed, manufactured
and subsequently subjected to quality control in accordance with the applicable rules of
technology. Should there nevertheless be cause for complaint, any claims for compensation
against the manufacturer of this product are subject to the latter’s general terms and
conditions of sale and delivery.
Warranty and liability claims for personal injury and property damage due to one or more of
the following causes are excluded:
 Improper use of the system
 Improper assembly, commissioning, operation and maintenance of the system
 Operating the system with defective safety devices or improperly installed or
non-functioning safety and protective devices
 Non-compliance with the instructions in the operating instructions regarding transport,
storage, installation, commissioning, operation (note: the operating log should be filled
in on a continuous basis), and maintenance of the system.
 Unauthorized, unapproved structural changes to the system
 Unauthorized modification of the control parameters
 Inadequate monitoring of system components that are subject to wear and tear
 Improperly performed repairs
Disasters caused by exposure to foreign bodies and force majeure.
General safety instructions

9
1.12 Safety instructions for storage
CAUTION!
The water softening system is not protected against contamination by preservation upon
delivery. In the case of long-term storage prior to system commissioning, the system must
be preserved to prevent contamination. Please ask the system manufacturer about the
possibilities of preservation. If the water softening system is stored in an area where there
is a risk of frost, all residual water must be removed.
General safety instructions

10
2. Transportation and Storage
2.1 Transportation to the customer
 The transport weight corresponds to the unladen weight and is specified in the
technical data.
 The system may still be damaged by extreme frost. The systems are filled with
a preservative/antifreeze mixture before delivery. The frost protection is effective
down to –10°C.
2.2 Storage at the customer
  The maximum storage period of the original packed system is 3 months at 20 °C. The
preservative must then be rinsed out and, if longer storage is desired, replenished.
 Extreme frost may damage the system. The systems are filled with a preservative/
antifreeze mixture before delivery. The frost protection is effective down to –10°C.
2.3 Transportation to the installation site
 Transport the unit to the intended location with care using a suitable lifting vehicle.
 Observe any specifications relating to the system’s centre of gravity on the packaging.
2.4 Delivery scope
The system consists of:
2 exchanger tanks containing a central tube with lower slotted nozzle
Ion exchanger (resin) for both filters and, if necessary, quartz gravel
Control head for filter A and connection adapter for filter B, each equipped
with upper slotted nozzle
Piping between filter A and B, hose material
Brine tank with salt carrier bottom and brine valve
CAUTION!
All systems must be secured against slipping and falling over during transport. Allowing the
system to tip out of the fixed stand is not permitted. If system parts are protruding from the
base area of the pallet, such protruding parts must be protected against damage while other
parts/ systems are being loaded.
Transportation and storage

11
3. Technical Data / Product Description
3.1 Technical Data
3.1.1 General data of the series
3.1.2 Special data of the sizes
Technical data / Product description
Flow pressure min. bar 3
Water pressure max. bar 8
Water temperature, permissible °C 2 – 30
Ambient temperature, permissible °C 5 – 40
Raw and soft water connections R1“
Waste water connection, hose nozzle Ø (mm) 12
Electrical connection, primary V/Hz 230 / 50
Electrical connection, secondary V/Hz 24 / 50
Current consumption, secondary mA 500
Type Condair Soft 60 120 200 320 400
Capacity at full salting (m³ x °dH) 60 120 200 320 400
Salt consumption with at full salting (kg) 3.0 6.0 10.0 16.0 20.0
Resin volume (I) 2 x 15 2 x 30 2 x 50 2 x 80 2 x 100
Gravel mass (kg) 1.2 4 4 8 11
Nominal capacity (m³/h) 0.68 1.35 2.25 3.6 4.5
Pressure drop at nominal capacity (bar) 0.3 0.4 1.0 1.33 1.73
Short-term maximum output (m³/h) 1.0 1.5 2.5 4.0 4.5
Waste water capacity, max. (m³/h) 0.30 0.62 0.62 0.96 1.20
Pressure tank Ø (mm) 184 257 257 334 369
Salt dissolving tank Ø (mm) 465 465 530 530 660
Pressure tank height (mm) 903 903 1,380 1,381 1,660
Salt dissolving tank height (mm) 673 673 1,047 1,047 990
Unladen weight (kg) 60 95 135 210 270
Operating weight (kg) 225 280 480 750 860
Block dimensions W x D x H (mm)
without brine tank
607 x 736
x 1.063
647 x 726
x 1.063
645 x 807
x 1.540
827 x 839
x 1.541
846 x 1043
x 1.840

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4. Installation and Assembly
4.1 Installation
4.1.1 Installation site requirements
 The space required for the system is specified in the dimensions provided in the
technical data.
The installation room must meet the ambient conditions according to the technical data.
The installation surface must be level and horizontal and have sufficient load-bearing
capacity.
The room must be well ventilated and frost-proof.
The necessary electrical connections, as specified in the technical data, must be available
on-site at a maximum distance of 1 m from the system.
Depending on the system size, a control air connection must be available.
The raw water connection must be provided with a shut-off device.
The on-site waste water connection must be provided as a free output in accordance with
EN 1717 and must be installed and usable in the required cross-section. Observe the
waste water capacity specified in the technical data.
When using drinking water as the raw water of a softening system, the following must
be observed:
An appropriately suitable fuse fitting for system separation must be installed by the customer
on-site. Upon request, the manufacturer may add silver resin or supply a chlorine cell
for installation in the brine exchange hose to enable automatic disinfection (subject to
an extra charge).
WARNING!
To prevent flooding due to leakage, the installation room must be equipped with a floor drain
and/or a leakage monitor with a corresponding alarm.
Technical Data / Product Description
INSTRUCTION
For installation and assembly, refer to the existing plans and drawings from the
technical appendix.
INSTRUCTION
In accordance with EN 1717, softening systems may be equipped with the following safety
fittings in drinking water installations: free output or pipe isolator. It should also be noted
that DIN 19636 „Softening systems in drinking water installations“ requires the following
– page 2, point 4.7 Protection against germs: „Since softening systems tend to become
contaminated, especially in stop-start operation, this must be prevented by means of
suitable design or chemical-physical measures.“

13
4.1.2 System installation
 Unpacking the system
 Check the delivery to ensure it is complete and free from transport damage.
 Transport the system to the intended location with care using suitable lifting equipment.
 The installation is carried out on an installation surface in accordance with the requirements above.
4.2 Assembly
4.2.1 Necessary qualification of the assembly personnel
4.2.2 Washing the gravel
Systems of the sizes 60 to 200 are already filled with supporting gravel upon delivery.
For systems of size 320 and larger, proceed as follows:
To remove impurities, wash the supplied quartz gravel in a bucket under running water, stirring
constantly.
4.2.3 Positioning the container
Position the two pressure tanks and the salt dissolving tank and align them in accordance with
the drawing.
INSTRUCTION
Any deviations or damage must be reported to the supplier immediately.
Installation and assembly
INSTRUCTION
The water-side connection may be carried out by trained specialist personnel only.
General guidelines (DIN, DVGW, SVGW, ÖKGW) and local installation regulations
must be observed during system installation.
B
A
Brine tank

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4.2.4 Filling in gravel and resin
Systems of sizes 60 to 200 are already filled with resin and quartz gravel upon delivery.
For systems of size 320 and larger, filling must be carried out as follows:
 If the softening system is not commissioned immediately after installation and if frost is to
be expected before commissioning, the filling must be carried out without water.
 Unscrew the control head or connection adapter with upper slotted nozzle from the container.
 Pull the central tube with the lower slotted nozzle out of the control head / adapter and
place it back in the container so that the lower slotted nozzle is in a central position on
the bottom of the container.
 Cover the opening of the central tube so that no impurities can fall into it.
 Fill the container approx. ¼ full with clean water.
 Fill the container with the quartz gravel first, then the exchanger resin
(quantities: see technical data).
 Divide the delivered gravel and resin quantities equally between the two containers.
 Rinse the container thread with clean water to remove any impurities.
 Uncover the central tube opening again. Check that the O-ring is sitting in the upper
nozzle (control head) and is undamaged.
 Replace the control head or connection adapter with the upper slotted nozzle centrally
on the central tube and screw it into the container thread.
4.2.5 Assembling the control head and connection adapter on the pressure tanks
 Use drawing „Soft control head on pressure tank A, intermediate piping and adapter
on pressure tank B“ in the appendix
 Screw one upper slotted nozzle each into both the inner thread of the soft control head
and the connection adapter for pressure tank B, if the upper slotted nozzles are not
already screwed in upon delivery
 Check if the O-ring is present above the outer thread on the connection adapter
 Place the connection adapter on the connection thread of pressure tank B, secure
pressure tank B against twisting and carefully screw the adapter into the pressure
tank thread as far as it will go. Ensure the connection is pressure-resistant.
 Check that the O-ring above the outer thread on the soft control head is present
 Place the soft control head on the connection thread of pressure tank A, secure pressure
tank A against twisting and carefully screw the control head into the pressure tank thread
as far as it will go. Ensure the connection is pressure-resistant.
4.2.6 Establishing internal piping and water connections
Connect the internal piping between the connection adapter on pressure tank B and the soft
control head on pressure tank A in accordance with drawing “Soft control head on pressure
tank A, intermediate piping and adapter on pressure tank B” in the appendix.
The on-site raw and soft water pipes must already be routed to the system in the required
cross-section and position. The on-site waste water connection must be installed and usable
in the required cross-section. On-site installation of a 0-10 bar pressure gauge and a test tap
in the raw and soft water pipes respectively is recommended.
Installation and assembly

15
Brine line:
Use the brine line to connect the injector at the control head with the brine valve in the brine tank
(PE hose).
Raw water connection:
Connect the raw water pipe to the raw water connection via the on-site shut-off valve.
Soft water connection:
Connect the soft water connection to the consumer(s).
Waste water connection:
Route the rinsing output of the control head and the overflow connection of the brine tank to the
free input in the waste water connection by means of one fabric hose respectively.
INSTRUCTION
All pipe connections must be connected when the system is not live. Ensure that no squeezing
or kinking of the hoses occurs and screw hose connections tightly. The concentrate and drain
lines must be routed with a downward slope to the free wastewater input. The waste water
must be allowed to flow off without backpressure.
Installation and assembly
INSTRUCTION
Negative pressure must not be generated in the exchanger tank or other components of the
softening system under any circumstances. If necessary, an additional ventilation valve to
prevent negative pressure must be installed on-site.

16
4.3 Electrical connection
4.3.1 Necessary qualification of the assembly personnel
4.3.2 Establishing the electrical connections
 The internal system modules are already wired to the control unit upon delivery.
 The power supply to the control unit is provided by the cable that is permanently
connected to the control unit with the integrated 230V-50Hz/ 12V-50Hz AC-AC adapter.
 The control unit’s current consumption with the system‘s connected internal actuators is
500 mA.
 An AC earthed socket (type CEE 7/3) fused in accordance with the system output must be
assembled within reach of the control unit connection cable’s length. Then, insert the plug
of the control unit’s power supply cable into the socket.
 One output each is available on the control unit for the signalling of a regeneration (RLY1)
and of an internal control error (RLY2) to the ZLT, (labelled RLY1 and RLY2 respectively
at the right edge of the board).
Installation and assembly
DANGER!
The electrical installation must be carried out by a qualied electrician, in compliance with the
VDE and EVU installation regulations, factory standard, etc. and in accordance with the valid
country-specic regulations.
DANGER!
The electrical installation must be carried out by a qualied electrician, in compliance with the
VDE and EVU installation regulations, factory standard, etc. and in accordance with the valid
country-specic regulations.
This involves two live NO contacts with a joint 12VDC conductor (COM), with an authorised
load of 100mA per output. The total current of both outputs must not exceed 200mA.
If potential-free signal outputs are required, the on-site installation of two cut-off relays
with 12 VDC/max. 100 mA is recommended. Check the installation dimensions of the
relays before assembling them under the control cover.

17
5. Commissioning and Decommissioning
5.1 Commissioning
5.1.1 Inspecting the hydraulic
connections before commissioning:
Are the raw, soft, waste, brine and overflow lines properly connected and tight?
Is sufficient flow pressure available at max. capacity? (See technical data in section C)
Electrical connections:
Is an earthed socket output assembled within reach of the mains connection cable and is it
permanently live? Is the water meter sensor plugged into the control unit?
5.1.2 Commissioning
Check the system for leaks during commissioning. Leaks may occur during transportation, which
need to be rectified during commissioning.
5.1.2.1 Preparations
 Close the on-site shut-off valves upstream and downstream of the softening system
 Plug the mains adapter into the shockproof socket
5.1.2.2 Set the control unit
Read section F (control unit) of these operating instructions and the control unit programming
instructions in the appendix carefully before commissioning.
The control unit is largely pre-set at the factory. Check the control unit settings using the
programming instructions for the applicable size 60, 120, 200, 230 or 400 in the appendix
and adjust the quick setting special values, which depend on the local conditions
(e.g. raw water hardness).
5.1.2.3 Rinsing the filters
Each filter must be backwashed and the brine tank filled with water before commissioning.
Proceed as follows:
 Open the shut-off valve in the raw water line Press the REGEN button for three seconds,
the regeneration on filter A or B starts with the BACKWASH step and the backwash time is
counted down.
 Wait until the BACKWASH step is finished and the control unit is in the BRINE step
 The injector must now draw in water (later brine) from the brine tank. This can be checked
by grasping the suction hose near the injector connection with one hand – there should be
a slight vibration.
 If a leak is present, air and no brine is sucked in. In this case, tighten the union nut on the
injector by hand
 Press the REGEN button to cancel the BRINE step. The RINSE step then appears
Commissioning and Decommissioning

18
To cancel the RINSE step, press the REGEN button. The FILL (brine tank) step appears
 Wait for this step
 Rinse the second filter by proceeding as described above for the first filter.
 After completing the FILL step, check whether the water in the brine tank is at
least approx. 20 mm above the salt carrier bottom or higher (visible through the
semi-transparent container wall).
 The water should be at least approx. 20 mm above the salt carrier bottom after the second
regeneration run. Otherwise, check the parameter settings of the control unit, where Step
14 „Filling quantity“, must be set correctly. After correcting the „Filling quantity“ parameter,
following the specifications in the appendix, start another regeneration and proceed as
described above once again until the „Fill“ step is completed.
5.1.3 Establishing the operating state
 Fill the brine tank with the regenerating salt and distribute it evenly on the salt
carrier bottom
 Open the shut-off valves in the raw and soft water lines so that water can be drained
 Throttle the soft water quantity at the soft water shut-off valve so that the max. flow rate
is not exceeded. Otherwise, the system will be hydraulically overrun, which may result in
a residual hardness increase. In the absence of a flow or quantity indicator, the flow rate
must be determined by gauging.
Commissioning and Decommissioning
INSTRUCTION
Only evaporated salt as per DIN EN 973 is suitable for regeneration. Exclusive use of tablet
salt of higher purity according to DIN EN 973, type A is recommended.
INSTRUCTION
The flow rate limitation must not be carried out in the raw water pipe, otherwise not enough
water can be drained for regeneration.
INSTRUCTION
When using fine-grained evaporated salt, a gauze cloth (mesh size 200 μm), cut to size,
must be placed on the salt carrier bottom. The gauze cloth must cover the entire salt carrier
bottom with no gaps, be guided upwards along the container walls and be held in place by
throwing it over the container collar before securing the lid.

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5.2 Decommissioning
5.2.1 Short-term decommissioning (less than two weeks)
 It is essential to wait until any ongoing regeneration has been completed. Otherwise, there is
a risk that hardness or even brine will be fed into the system during recommissioning.
 Pull out the mains plug
 Close the shut-off valves in the raw and soft water lines
 If a supply to the downstream consumers is required, including a raw water supply, open the
bypass line (if available).
5.2.2 Long-term decommissioning (more than two weeks)
The softening system (both filters) must be completely regenerated before it is decommissioned
for a longer period of time.
 To trigger a regeneration, press the REGEN button for at least 3 s (the first of the two filters
is now regenerated) and wait for it to be completed.
 Wait at least 5 hours (at min. 15°C) until new brine has formed in the brine tank
 Trigger another regeneration by pressing the REGEN button for at least 3 s
(the second of the two filters is now regenerated) and wait for it to be completed.
 After regeneration has been completed, pull the mains plug out of the socket.
 If the softening system is at risk of frost during the decommissioning period, the water
must be removed from the filter. The residual moisture in the filter is sufficient to prevent
the resin from drying out. In this state, the resin can tolerate frost down to –10°C without
being damaged.
5.2.3 Recommissioning
5.2.3.1 Recommissioning after a short decommissioning period
 Check that the softening system and all hydraulic connections are in proper working order,
and that the salt dissolving tank is completely filled with regenerating salt
 Plug in the mains plug
 Slowly open shut-off valves in raw and soft water lines
Commissioning and Decommissioning

20
5.2.3.2 Recommissioning after a long decommissioning period
After a long decommissioning period, regeneration combined with resin disinfection must be
carried out before the system can be recommissioned. For the disinfection, we recommend
Lubron disinfection tabs (DesiTabs).
 Check that the softening system and all hydraulic connections are in proper working order
and the salt dissolving tank is completely filled with regenerating salt
 Using a hose, fill the salt dissolving tank with water from an external supply until the
water is above the salt carrier bottom (salt is in contact with the water, brine formation
is enabled)
  Before regeneration, wait at least 5 hours (at min. 15°C) for brine to form
(starting from the last regeneration or fill of regeneration salt)
 Drop DesiTab tablets (number of tablets according to the instructions enclosed with
the tablets) into the brine standpipe and wait 10 min.
 Plug in the mains plug
 Open the shut-off valve in the raw water line
 Press the REGEN button for three seconds, the regeneration on filter A or B starts
with the BACKWASH step and the backwash time is counted down.
 Wait until the BACKWASH step has been completed and the control unit is in the
BRINE step
 Observe the brine disinfectant solution mixture soaking in. At a solution level of approx. 70
mm in the brine tank, when nothing more is being sucked in, close the shut-off valve in the
raw water line and disconnect the control unit plug
 Wait approx. 30 minutes, then reconnect the control unit plug
 Slowly open the raw water ball valve and allow the regeneration to run until it finishes. The
brine tank is then refilled with water and new brine is formed.
 Wait at least 5 hours (at min. 15°C) until new brine has formed in the brine tank
 Trigger another regeneration by pressing the REGEN button for at least 3 s and repeat
this procedure for the second filter. If filter A was regenerated previously, the regeneration
starts at filter B and if filter B was regenerated previously, the regeneration starts at filter A
 After both filters have been regenerated in the manner described here, which includes
disinfection, the system is available for the production of soft water once more.
 Slowly open the shut-off valves in the soft water line.
Commissioning and decommissioning