WDT UMAP NT35-R User manual

Item No.: --- OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Language: EN
Operating and installation instructions
Switch-Over Automatic
Type UMAP NT35-R

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 2 of 14
Table of contents
1About these instructions / general .......................................................................................................... 3
1.1 Scope of applicability ........................................................................................................................................3
1.2 Target group .................................................................................................................................................... 3
1.3 Symbols used ...................................................................................................................................................3
1.4 Warranty .........................................................................................................................................................4
1.5 Further information.......................................................................................................................................... 4
1.6 Information regarding support queries.............................................................................................................4
2Safety ...................................................................................................................................................... 5
2.1 Intended use.....................................................................................................................................................5
2.2 Safety notices ................................................................................................................................................... 5
Handling of chemicals, risks to humans and the environment ........................................................................5
Protective measures and rules of conduct ..................................................................................................... 5
3Product description –Functional description –(scope of delivery).......................................................... 6
3.1 Scope of delivery / accessories.........................................................................................................................6
3.2 Product description - Function..........................................................................................................................6
3.3 Identification of the device / identification plate ...............................................................................................7
3.4 Technical data .................................................................................................................................................. 7
3.5 Transport / storage .........................................................................................................................................7
4Installation / Commissioning / Operation ............................................................................................... 8
4.1 Select the installation site..................................................................................................................................8
4.2 Installation instructions / installation.................................................................................................................8
4.3 Commissioning................................................................................................................................................. 8
4.4 Description of the control ................................................................................................................................9
4.5 Replenish consumables.....................................................................................................................................9
5Maintenance, care, faults ....................................................................................................................... 10
5.1 Device maintenance .......................................................................................................................................10
Open and close the housing.........................................................................................................................10
5.2 Trouble-shooting............................................................................................................................................10
6Decommissioning –Storage –Disposal................................................................................................. 11
6.1 General ..........................................................................................................................................................11
6.2 Decommissioning of the switch-over automatic..............................................................................................11
6.3 Disposal of used parts and operating materials...............................................................................................11
7Documents............................................................................................................................................ 12
7.1 Declaration of conformity ..............................................................................................................................12
7.2 Wiring diagrams.............................................................................................................................................13
7.3 Spare part list .................................................................................................................................................13
8Appendices............................................................................................................................................ 14
Imprint:
All rights reserved
© Copyright by WDT –Werner Dosiertechnik GmbH & Co KG
Edition: see footer
Reproduction of any kind and translation into other languages, even in excerpts, are only permitted with the express
authorisation of the company WDT - Werner Dosiertechnik GmbH & Co. KG. Subject to technical modifications
These operating instructions are an English translation of the original German version by the company WDT.
Responsible for the content:
Co. WDT - Werner Dosiertechnik GmbH & Co. KG
Hettlinger Str. 17; D-86637 Wertingen-Geratshofen
Phone: [phone] / 9 86 97 –0 Fax: [phone]
Email: [e-mail]

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 3 of 14
1About these instructions / general
1.1 Scope of applicability
These instructions describe the functioning, installation, commissioning and operation of the switch-over
automatic type UMAP NT35-R along with the corresponding accessories.
The operating instruction must be read carefully before use and kept on the device for direct use!
1.2 Target group
Only our authorised partners and people who have been trained in the device functions are permitted to
work on the device, provided that they have read and understood these Operating Instructions.
Electrical connection work may only be carried out by appropriately trained specialists!
1.3 Symbols used
This document uses the following types of safety notices as well as general notices:
DANGER!
"DANGER" denotes a safety notice which, if disregarded, may lead to serious or life-threatening injuries, or
serious material damage!
CAUTION!
"CAUTION" denotes a safety notice which, if disregarded, may lead to injuries, damage to health or
material damage!
ATTENTION!
"ATTENTION" denotes a safety notice which, if disregarded, may lead to material damage!
CORROSIVE!
"Corrosive" denotes a safety notice which, if disregarded when handling chemicals, may lead to injuries or
material damage.
ESD SENSITIVE!
“ESD SENSITIVE” denotes electronic components that may be damaged by electrostatic discharges. The
generally accepted safety precautions for ESD-sensitive devices must be observed when handling the devices!
NOTICE!
A notice denotes information which, if disregarded, may lead to malfunctions.
Tip!
A "Tip" denotes information that may result in improvements in the operating process.
Mandatory sign
Use face protection!
Mandatory sign
Use protective gloves!
In accordance with DIN EN 374, protective gloves against chemicals and microorganisms.

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 4 of 14
Mandatory sign
Use protective apron!
Mandatory sign
Use protective boots!
1.4 Warranty
All WDT devices and equipment are manufactured using modern production methods and are subject to
comprehensive quality control. However, should there be a reason for complaint, any compensation claims
shall be directed to the company WDT in accordance with the general terms and conditions of warranty
General terms and conditions of warranty
The company WDT assumes a 2-year warranty, starting with the commissioning, up to 27 months after
delivery; subject to correct installation and commissioning.
Exempt from this are wear parts such as seals, hoses, diaphragms, dosing screws, electrodes, roller carriers
and other parts that are subject to mechanical or chemical wear and tear. For these we assume a warranty of
1/2 year.
Our merchandise management programme requires an invoice for each delivery (including warranty services).
When returning a defective component, upon review you will receive a corresponding credit, if applicable.
We request a return within 14 days.
The costs for subsequent damages and for the processing of warranty claims are excluded.
There are no warranty claims for damage caused by frost, water and electrical overvoltage or by improper
handling.
CAUTION!
In the event of any unauthorised modifications to the device the warranty and product
liability will be voided!
1.5 Further information
Further information about special topics is available from your specialist dealer or directly from:
WDT Werner Dosiertechnik GmbH & Co KG
Hettlinger Strasse 17
D-86637 Wertingen - Geratshofen, Germany
Phone [phone]
Fax. [phone]
http: //www.werner-dosiertechnik.de
1.6 Information regarding support queries
For spare part orders, we require the following data. You can find these on the identification plate.
device designation
device serial number
year of manufacture

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 5 of 14
2Safety
2.1 Intended use
The switch-over automatic must only be used for the purposes described in Chapter 3.2 Product description!
The locally applicable regulations concerning accident prevention, occupational safety and drinking water
protection must also be observed!
2.2 Safety notices
Carefully read and comply with the operating instructions prior to installation and use of the device! Work
on the device and changes in the settings may only be carried out by properly instructed persons!
Handling of chemicals, risks to humans and the environment
In case of emergencies when handling chemicals, contact the emergency poison centre!
Emergency number:
Munich Emergency Poison Centre (or any other Poison Centre)
Phone: [phone]
Excerpt from the Accident Prevention Regulations, GUV-V D 5
Installation rooms for chlorination systems and storage rooms
Section 3a. (1) Chlorination systems must be installed in lockable rooms and the chemicals intended for the
chlorination must be stored in lockable rooms.
Re Section 3a Para. 1:
This requirement ensures that chlorination systems and chemicals shall be protected against weather effects
and unauthorised access.
(2) Rooms in accordance with Para. 1 must not be intended for the permanent presence of persons.
Re Section 3a Para. 2:
…… A “permanent” presence is given when persons are present in the room for more than 2 hours per day.
Repair and maintenance work on the chlorination system are exempt from this.
Protective measures and rules of conduct
DANGER! CORROSIVE! SAFETY EQUIPMENT!
The switch-over automatic is used to dose chemicals such as chlorine solution, pH
reducer (acid) or flocculant from the delivery container.
Ensure that the correct container / chemical is used! Different chemicals can react
strongly with each other when mixed and release toxic fumes. For this reason, the
greatest possible care must be taken when working with chemicals! Face protection,
protective gloves, protective apron, boots.
Store chemicals in such a way that they are not accessible to unauthorised persons.
When storing chemicals, the chemical manufacturer's safety data sheets must be
complied with.
Fore more information, see the chemical manufacturer's safety data sheets!

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 6 of 14
ATTENTION! ESD SENSITIVE!
The electronic components in the device controls are sensitive to electrostatic
discharge. For this reason, the generally accepted safety precautions for ESD-
sensitive devices must be observed when handling the devices, including:
Discharge of personal static charge
Dissipative clothing
Disconnect the device from the voltage supply
3Product description –Functional description –(scope of delivery)
3.1 Scope of delivery / accessories
The scope of delivery includes the following assembly groups:
Control electronic
2 suction sets with empty indicator, foot valve and container cover
3/2 way switchover solenoid valve for switching between
containers
Figure 1, Switchover solenoid valve
Options:
Suction set with return line –necessary for operation with solenoid diaphragm pump and suction
ventilator
Stand console with collecting tub
Collecting tubs
3.2 Product description - Function
When dosing chemicals from two containers, the “switch-over automatic” automatically switches the suction
to the full container as soon as one container has been emptied. The empty container can then be exchanged
for a full one at any time. This ensures a continuous supply of chemicals to the swimming pool circuit, and
there will be no interruption in dosing due to an empty container. In addition, the time window for changing
the empty container increases considerably.

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 7 of 14
3.3 Identification of the device / identification plate
Identification plate Switch-over automatic type NT 35-R
Enter the data from the identification plate of your device here.
Field 1: Enter serial number
Field 2: Enter date of manufacturing
3.4 Technical data
Switch-over automatic type UMAP NT35-R
Dimensions and weights:
Dimensions
W 20 cm, D 11 cm, H 40 cm
Space requirement, including operation
and maintenance
W 70 cm, D 100 cm, H 200 cm
Empty weight / operating weight
approx. 2 kg / 25 kg
Connection data
Electrical connection data
110-240VAC, 50-60Hz; safety plug
Fuse
Round fuse 1A slow
Hydraulic connection data
Hose connection for suction lances: 4x1, ¼“ (standard)
Sewer connection (recommended)
At least DN25
Protection class
IP44
Operating data:
Medium temperature
Ambient temperature
Humidity technical room
5°C to 35°C
5°C to 35°C
max.: 80% (non-condensing)
Room ventilation (in and out)
According to DIN 19643
Material
Mounting plate: PP
Housing: PS
Seals: EPDM, Viton
3.5 Transport / storage
Please check the devices immediately upon receipt for potential transport damage.
ATTENTION!
The device may be damaged by frost or high temperatures.
Do not store the device near objects with significant heat radiation or in direct
sunlight. The device may only be transported and stored in its original packaging.
Please ensure careful handling.
Storage of chemicals
DANGER!
Pay attention to the chemical suppliers’ safety data sheets!
In addition, please pay attention to the provision regarding the storage of chemicals
TRGS 515.
___________
___.___._________

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 8 of 14
4Installation / Commissioning / Operation
4.1 Select the installation site
The following should be observed in regard to the installation site:
a) A freely accessible installation site should be selected to facilitate operation and subsequent maintenance
tasks.
b) Protection tubs must be available for the chemical containers.
c) Observe the temperature specifications for the surrounding air and medium in accordance with Chapter
3.4 Technical data. No flammable vapours, dust or gases may be present in the immediate vicinity of the
device. A floor drain is recommended.
d) The device must not be exposed to the elements. It may not be installed outdoors. The system must be
protected from frost and direct sunlight.
e) An isolated ground socket is required.
f) The installation site must comply with the accident prevention regulations (Germany BGR-GUV-R 108)
and should not be accessible to unauthorised persons. A separate storage room must be available for
stocking the chemicals.
g) It must be possible to vent and aerate technical areas so that hazardous substances do not occur in
health-hazardous concentrations (from accident prevention regulations BGR-GUV-R 108).
h) A pump for dosing the chemical must be available on site or must be ordered separately. Pay attention
to the durability of the pump materials!
4.2 Installation instructions / installation
The “switch-over automatic” is preinstalled on a mounting plate and is delivered ready to plug in. The
device must be supplied with continuous voltage.
a) Mount the device in a suitable location in the technical room using 4 screws.
b) Mount the external dosing pump in a suitable location, for example next to the mounting plate.
c) Attach warning and notice signs in accordance with the locally applicable accident prevention
regulations (Germany: BGR-GUV-R 108) at the designated positions. In particular for the labelling of
the chemicals used!
4.3 Commissioning
When using a peristaltic pump
a) Venting of the peristaltic pump is not necessary. The type of pump to be used must already be taken
into account when ordering.
a) Place the containers under the switch-over automatic in suitable collecting tubs and open them. Ensure
that the correct chemical is used!
b) Place the suction sets in the containers and lightly screw on the lids
c) Plug in the switch-over automatic; caution, the dosing pump may start!
After a power failure, suction continues at the most recently activated container.
When using a solenoid diaphragm pump
a) Solenoid diaphragm pumps must always be vented on the suction side. The type of pump to be used
must already be taken into account when ordering.
b) Place the containers under the switch-over automatic in suitable collecting tubs and open them. Ensure
that the correct chemical is used!
c) Place the suction sets in the containers and lightly screw on the lids
d) Connect the suction line of the dosing pump to the outflow of the switchover valve and the return line
to the pump’s ventilator.
e) Install the on-site suction ventilator and ventilate with a manual vacuum pump until the
suction ventilator is ¾ full.
f) Keep the dosing pump running
g) Check if the suction hose from the suction ventilator to the pump and the pump head are
completely vented (pump head must fill with liquid). The pump is now vented. The dosing
hose from the pump to the injection point does not need to be vented.
h) Plug in the switch-over automatic; caution, the dosing pump may start!
After a power failure, suction continues at the most recently activated container.

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 9 of 14
4.4 Description of the control
The switch-over automatic control is fully automated.
When power is supplied to the device, it automatically enters the operation mode.
Operation states:
LED Operation lights up green The device is in operation
LED Container 1 lights up green Chemicals are suctioned from Container 1.
LED Container 1 lights up red Container 1 is empty
LED Container 2 lights up green Chemicals are suctioned from Container 2.
LED Container 2 lights up red Container 2 is empty
Process description
a) Suction starts from Container 1. If Container 1 is empty, the solenoid valve switches to Container 2.
b) Now, chemicals are suctioned from Container 2. The LED Container 1 switches to red. This reserve
indication can be retrieved from the control unit as a potential-free contact.
c) If the empty Container 1 is replaced with a full container, the LED Container 1 goes out. Suction continues
from Container 2.
d) Only once Container 2 is empty, the system switches back to Container 1. If Container 1 is still empty,
the dosing is automatically switched off.
e) The reserve indication and the fault indication are pending. Both messages can be retrieved from the
control unit.
After a power failure, suction continues at the most recently activated container.
4.5 Replenish consumables
Replace container
DANGER! CORROSIVE! SAFETY EQUIPMENT!
Ensure that the correct container / chemical is used!
Different chemicals can react strongly with each other when mixed and release toxic
fumes. For this reason, the greatest possible care must be taken when working with
these chemicals! Face protection, protective gloves, protective apron, boots.
The safety data sheets for each chemical must be observed.
a) Remove the empty container from the protection tub.
b) Place the full container in the protection tub and unscrew the lid.
c) Unscrew the screw cap with the suction lance from the empty container.
d) Insert the suction lance into the full canister all the way to the bottom and close it with the screw cap.
e) Close the empty container and safely dispose of it.

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 10 of 14
5Maintenance, care, faults
5.1 Device maintenance
The “switch-over automatic” is a low-maintenance device.
Open and close the housing
DANGER DUE TO ELECTRICAL VOLTAGE!
This work may only be carried out by qualified electrical technicians! Before any
electrical work is carried out, the power supply must be switched off and secured
against being reactivated!
ESD SENSITIVE!
The electronic components in the devices are sensitive to electrostatic discharges. The
generally accepted safety precautions for ESD-sensitive devices must be observed
when handling the devices.
In particular, the following applies for work on electronic components:
Never plug in or remove connectors unless the power has been deactivated.
As the person handling the device, please discharge yourself electrostatically for at least 5 seconds prior
to directly touching the devices, e.g., by touching a grounded part of the system or by wearing an ESD
antistatic wrist strap connected to ground.
5.2 Trouble-shooting
Possible fault indications during normal operation:
LED
Message / fault
Function
Remedy
Container 1 lights up
red
Container 1 empty
Solenoid valve is switched on,
switchover to Container 2;
Reserve indication on
Replace Container 1
Container 2 lights up
red
Container 2 empty
Solenoid valve is switched on,
switchover to Container 1;
Reserve indication on
Replace Container 2
Container 1 and
Container 2 lights up
red
Both containers
empty
No switchover; collective fault on
Replace both containers
(at least one);
Control unit starts again

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 11 of 14
6Decommissioning –Storage –Disposal
6.1 General
In the event of decommissioning, the devices must be emptied completely or protected against frost!
6.2 Decommissioning of the switch-over automatic
1. Remove both suction lances from the containers and place them in a bucket filled with clean water.
2. Close the containers.
3. Flush the suction lances until the lines are clean (control via the float switches).
4. Disconnect the device from the power supply.
ATTENTION!
When recommissioning, observe the instructions in the “Commissioning” chapter.
6.3 Disposal of used parts and operating materials
Thoroughly clean any removed, contaminated parts and dispose of or recycle them in accordance with the
regulations applicable at the operating location. Pay attention to the relevant instructions on the packaging
for the operating materials. In case of doubt, information may be obtained from the authorities responsible
for disposal at your location.
If this is not possible, dispose of the parts/substances as hazardous waste.

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 12 of 14
7Documents
7.1 Declaration of conformity

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 13 of 14
7.2 Wiring diagrams
DANGER!
Risk of death due to high voltage. All electrical work on the device must only be
carried out by trained specialists in accordance with the applicable safety
regulations! Fuses on the control boards must only be renewed once the power has
been disconnected and secured against being reactivated!

Switch-Over Automatic, type UMAP NT35-R
Index: 03 Date modified: 28/03/2022 OI No.: BA SW 017-03 Umschaltautomatik Typ UMAP NT35-R EN.docx Page 14 of 14
7.3 Spare part list
Item No.: Designation
27565 Control board HMI with three LED
29546 Power pack NT35-R
25320 Ribbon cable 10-pole, L=300 mm
19541 Bulkhead connector PP 4x1 on both sides
11003 Union nut d 6 - PP - 1/4"
15077 Hose PVC, transparent 4,0x1,0 mm
12252 Suction lance NF d16 500 -4x1 with empty switch, threaded screw connection and non-return
valve
14491 Switchover valve 3/2-way 24 V/DC Fluidos Peet
19569 Hose connection 4x1-UNF1/4-28
14492 Device connector for switchover valve Fluidos Peet
29066 Switchover valve 3/2-way 24 V/DC
8Appendices
Personal notes