Judo PROFIMAT JPF-A Series User manual

Installation and operating instructions
JUDO PROFIMAT ¾" - 4"
Model JPF-A
Automatic backwash protective filter
Valid for: Canada
Indoor use only
Read before use and store!
C
US
Installation and operating instructions
JUDO PROFIMAT ¾" - 4"
Model JPF-A
Automatic backwash protective filter
Valid for: Canada
Indoor use only
Read before use and store!
C
US

2 JUDO JPF-A 1701649 • 2019/04
Queries, orders, customer service
JUDO Wasseraufbereitung GmbH
Postfach 380
D-71351 Winnenden
Email: [email protected] • judo.eu
Office address:
JUDO Wasseraufbereitung GmbH
Hohreuschstraße 39 - 41
D-71364 Winnenden
Trademarks:
Trademarks used in this document are the
protected and registered trademarks of the
owners.
© JUDO Wasseraufbereitung GmbH
D-71364 Winnenden
All rights reserved.
Reprinting, even in excerpt form, is only
permitted with special approval.
Dear customers,
Thank you for the confidence you have
shown us by purchasing this product.
You have purchased a state-of-the-art
device. It has been carefully checked
prior to delivery.
Nevertheless, if difficulties occur,
please contact the closest customer
service (see chapter Customer service).
These installation and operating instruc-
tions are intended for both installers, who
are in charge of installing, maintaining or
repairing the device, and for the operators
of the device.

Contents
1701649 • 2019/04 JUDO JPF-A 3
Contents
1 Federal Communication Commis-
sion Interference Statement......... 4
2 Safety..............................................4
2.1 Intended use................................... 4
2.2 Application limits............................. 4
2.3 Safety instructions...........................5
2.4 Symbols used..................................7
2.5 Units used....................................... 7
3 Product information......................7
3.1 Scope of supply.............................. 7
3.2 Function description........................ 8
3.3 Materials used.................................9
3.4 Approval marks............................... 9
4 Installation................................... 10
4.1 Conditions..................................... 10
4.2 Installation of the rotary flange fit-
ting.................................................10
4.3 Installation of the device............... 10
4.4 Draining of the backwash
water..............................................11
4.5 Commissioning..............................13
5 Operation..................................... 14
5.1 Warning lights, manual button.......14
5.2 Cleaning of the sieve insert (back-
washing)........................................ 14
5.3 Conversions, changes...................17
5.4 Maintenance, repair,
spare parts.................................... 17
5.5 Temporary removal of the
device............................................ 18
6 Remote control and remote trans-
mission of messages..................18
6.1 Potential-free input........................ 18
6.2 Potential-free message................. 19
7 Fault..............................................21
8 Servicing...................................... 22
8.1 Cleaning........................................ 22
8.2 Warranty and maintenance........... 22
9 Technical data............................. 23
9.1 Versions........................................ 25
9.2 Installation dimensions..................26
9.3 Accessories................................... 27
9.4 Circuit diagram for device con-
trol................................................. 28
9.5 Spare parts....................................30
10 Disposal....................................... 39
11 Customer service........................ 40

Federal Communication Commission Interference Statement
4 JUDO JPF-A 1701649 • 2019/04
1 Federal Communication
Commission Interference
Statement
This equipment has been tested and found
to comply with the limits for a Class B digi-
tal device, pursuant to Part 15 of the FCC
Rules. These limits are designed to pro-
vide reasonable protection against harm-
ful interference in a residential installation.
This equipment generates, uses and can
radiate radio frequency energy and, if not
installed and used in accordance with the
instructions, may cause harmful interfer-
ence to radio communications. However,
there is no guarantee that interference will
not occur in a particular installation. If this
equipment does cause harmful interference
to radio or television reception, which can
be determined by turning the equipment off
and on, the user is encouraged to try to cor-
rect the interference by one or more of the
following measures:
•Reorient or relocate the receiving
antenna.
•Increase the separation between the
equipment and receiver.
•Connect the equipment into an outlet on
a circuit different from that to which the
receiver is connected.
•Consult the dealer or an experienced
radio / TV technician for help.
FCC Caution: To assure continued com-
pliance, any changes or modifications not
expressly approved by the party respon-
sible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions:
1 this device may not cause harmful inter-
ference, and
2 this device must accept any interference
received, including interference that may
cause undesired operation.
2 Safety
These operating instructions must always
be available at the place of use of the
device.
2.1 Intended use
The device is for the
•Filtration
of drinking water in domestic water pip-
ing and for residential, commercial and
industrial use. It removes coarse and fine-
grained particles from the drinking water,
which are larger or equal to the mesh size
of the filter, in order to prevent
•pipe damage caused by corrosion
•malfunctions of fittings or control and
regulating devices caused by foreign
bodies.
The water to be filtered must be of drinking
water quality.
The device can be installed in all commer-
cially available drinking water pipes. Both
installation and use of the device are sub-
ject to the applicable national regulations.
INFO_NO_HEADER
Particles that are smaller than the
mesh size of the filter supplied and
materials causing cloudiness cannot
be filtered out of the water.
2.2 Application limits
2.2.1 Water quality
The water to be filtered must be of drinking
water quality. Before using the device with
water of a different quality, it is essential to
consult the manufacturer.

Safety
1701649 • 2019/04 JUDO JPF-A 5
2.2.2 Water temperature
The filter is suitable for use in drinking
water up to a maximum water temperature
of 30 °C (86 °F).
2.2.3 Water pressure
JPF-A ¾" - 2½"
CAUTION
The water pressure must not exceed
232 psi / 1600 kPa input pressure.
The device must not be installed if
the mains pressure is above 232 psi /
1600 kPa (even for a short time)!
Nominal pressure PN 16
Operating pressure 22 - 232 psi
(150 - 1600 kPa)
The water pressure must not fall below 22
psi (150 kPa) as otherwise backwashing
can be impaired!
INFO_NO_HEADER
Starting at an operating pressure of
145 psi (1000 kPa), increased wear
can be expected!
JPF-A 3" - 4"
CAUTION
The water pressure must not exceed
150 psi / 1000 kPa input pressure.
The device must not be installed if
the mains pressure is above 150 psi /
1000 kPa (even for a short time)!
Nominal pressure PN 10
Operating pressure 22 - 150 psi
(150 - 1000 kPa)
The water pressure must not fall below 22
psi / 150 kPa as otherwise backwashing
can be impaired!
2.3 Safety instructions
2.3.1 Electrical danger
ELECTRO_NO_HEADER
Risk of electric shock
No electrical wiring or equipment that is
not splash-proof may run or be stored
below the device. Electrical devices/
equipment located in the vicinity of the
device must be splash-proof or comply
with the legal regulations for wet rooms.
Only the supplied power supply unit may
be used to connect the unit to the power
supply. This reduces the mains voltage
for operating the electronics to a harm-
less low voltage of 24 V.
A splash-proof socket is required for
connection to the electrical grid, in
accordance with the legal regulations for
wet rooms.
On “potential-free” designs: Only con-
nect potential-free switching contacts
to the potential-free input. Do not apply
extraneous voltage!
On “potential-free” designs: Only low
voltages can be used for the remote
transmission of the fault indication via
the potential-free output!
The power supply unit must be con-
nected to make the electrical installation
and to adjust the DIP switch.
Switching voltage: maximum 24 V
Amperage: maximum 1 A
2.3.2 Warning of property damage
WARNING
Risk of water damage or damage
to property
The device may only be installed by
qualified technical personnel.

Safety
6 JUDO JPF-A 1701649 • 2019/04
The installation room must be dry and
free from frost.
The ambient temperature must not
exceed 30 °C! In higher temperatures
or direct sunlight, material damage may
occur up to and including breakage of
device parts.
An adequately sized wastewater connec-
tion (e.g. floor drain) in compliance with
DIN 1986 must be provided.
In order to ensure safe drinking water
hygiene, a free discharge of the waste-
water acc. to DIN EN 1717 must be
ensured.
The pipe must be able to safely sup-
port the device (weight: see chapter 9).
If necessary, the pipes must be provided
with additional fastenings or support.
If no bypass valve is installed, a shut-
off valve must be installed upstream of
the unit in order to interrupt the water
supply during installation, maintenance,
repair or malfunction of the device.
Install the device in a vertical position
(± 5°). Otherwise, water may escape and
cause water damage.
For the installation of the device in
domestic water piping, only use the sup-
plied built-in rotary flange (see chapter
4.2).
The flange surface of the rotary flange
fitting must be upright!
The rotary flange fitting must be fitted so
that it is free from mechanical stress or
strain. Otherwise mechanical damage to
the pipe or the rotary flange fitting up to
and including breaks can result.
For proper sealing the profile of the pro-
file flange seal must point towards the
rotary flange fitting (see Figure 4).
Prior to plugging in the device, ensure
that the wastewater connection is func-
tional.
Only operate the device in a technically
faultless condition:
•Check for damage prior to installa-
tion.
•Immediately have any malfunctions in
operation rectified by qualified tech-
nical personnel.
Persons who, due to their physical, sen-
sory or mental abilities or their inexperi-
ence or lack of knowledge, are unable to
operate the device safely may not oper-
ate it without supervision or instruction
from a responsible person.
Regular backwashing of the device is
required to ensure safe drinking water
hygiene (see chapter 5.2.1).
The mains voltage must not be inter-
rupted (e.g. via a light switch). If the filter
is not permanently supplied with power,
backwashing or a warning in case of
faults is not possible.
Do not use household cleaning agents
to clean the outside of the device, but
only use clear water to avoid embrittle-
ment of the plastic.
The device may only be repaired by
qualified technical personnel.
Only use original spare parts for repairs.
Before performing work on the device
that goes beyond pure operational use,
the device must be depressurised! If
this is ignored, the result may be uncon-
trolled escape of water resulting in water
damage to the building/home.
If the device is removed due to an inter-
ruption of operation:
•Protect the flange surfaces against
damage to ensure proper sealing.
•Protect the device from dirt so as not
to impair drinking water hygiene.
•Store the device in a frost-free place
to prevent damage caused by freez-
ing water and leakage.

Safety
1701649 • 2019/04 JUDO JPF-A 7
Unauthorised conversions and changes
are forbidden for safety reasons. These
can impair the functioning of the device,
leading to leaks and, in the worse case
scenario, to bursting of the device.
2.4 Symbols used
The safety instructions contained in these
operating instructions are labelled with the
following symbols:
Indication of existing dangers
Warning of electric voltage
User tips and other information
Instructions attached directly to the device,
e.g.:
•Direction of flow (arrow)
•Type label
•Cleaning information
must be observed and maintained in legible
condition.
2.5 Units used
Unit Conversion
°F °F = 9/5 °C + 32
psi 1 bar = 100 kPa = 14.5 psi
gpm 1 m³/h = 4.4 gpm
¾" DN 20
1" DN 25
1¼" DN 32
1½" DN 40
2" DN 50
2½" DN 65
3" DN 80
4" DN 100
3 Product information
3.1 Scope of supply
•Automatic backwash protective filter,
pre-assembled
•Built-in rotary flange (for JPF-A ¾" - 2")
•Installation and operating instructions

Product information
8 JUDO JPF-A 1701649 • 2019/04
3.2 Function description
Unfiltered water flows into the device
through the rotary flange or connection
flange. A coarse filter prevents large dirt
particles from reaching the fine filter. For
JPF-A 2½" - 4": coarse dirt collects in the
sludge trap. The water flows from the out-
side to the inside through a cylindrical sieve
insert. The dirt particles remain on the sieve
fabric of the sieve insert. The adhering
residues are visible from outside through
the transparent filter bowl.
Subsequently the filtered water exits the
device again via the rotary flange or the
connection flange.
Fig. 1: JPF-A ¾" - 1¼"
1 Automatic control
2 Differential pressure switch (only
for „ATP“- models)
3 Filter bowl
4 Rotary flange
5 Wastewater connection
Fig. 2: JPF-A 1½" - 2"
1 Automatic control
2 Differential pressure switch (only
for „ATP“- models)
3 Filter bowl
4 Rotary flange
5 Wastewater connection

Product information
1701649 • 2019/04 JUDO JPF-A 9
Fig. 3: JPF-A 2½" - 4"
1 Automatic control
2 Filter bowl
3 Flange
4 Ball valve, blue handle (sludge trap)
5 Outlet sludge trap
6 Wastewater connection
7 Ball valve, black handle (backwashing water)
3.3 Materials used
The materials used are resistant to the
physical, chemical and corrosive loads
expected to be encountered in drinking
water. They meet the requirements speci-
fied in the following standards:
•DIN EN 13443-1
•DIN 19628
•DIN 50930-6
All materials are hygienically and physi-
ologically harmless and fulfill the require-
ments and directives of the Umweltbunde-
samt (UBA). Plastics fulfil the requirements
of DIN EN 16421.
3.4 Approval marks
C
US
The device has been tested by the CSA
(Canadian Standards Association) and
bears the CSA approval mark of certified
safety.

Installation
10 JUDO JPF-A 1701649 • 2019/04
4 Installation
CAUTION
The device may only be installed
by qualified technical personnel.
Installation of the device upstream of the
water meter is forbidden.
4.1 Conditions
CAUTION
Risk of property damage or water
damage!
The pipe must be able to safely
support the device (weight: see
chapter 9). If necessary, the pipes
must be provided with additional
fastenings or support.
To ensure convenient operation and main-
tenance of the device, always adhere to
the specified clearances (see chapter
4.4.1). The space above and below the filter
should be approximately 200 mm to ensure
proper operation and maintenance of the fil-
ter.
4.2 Installation of the rotary
flange fitting
JPF-A ¾" - 2"
CAUTION
The flange surface of the rotary
flange fitting must be upright!
The rotary flange fitting must
be fitted so that it is free from
mechanical stress or strain. Oth-
erwise mechanical damage to the
pipe or the rotary flange fitting up
to and including breaks can result.
The built-in rotary flange serves as a con-
necting element between the domestic
water station and the device. It is suitable
both for horizontal and vertical pipes.
It consists of:
•rotary flange fitting
•profile flange seal
•two union nuts
•two pipe sockets
•two flat seals.
Attention: Install the built-in rotary flange
in the flow direction! This is indicated by an
arrow integral with the casting.
INFO_NO_HEADER
If the installation is twisted, back-
washing the device is not possible.
1
2
Fig. 4: Rotary flange fitting
1 Profile flange seal
2 Flow direction arrow
4.3 Installation of the device
CAUTION
If no bypass valve is installed, a
shut-off valve must be installed
upstream of the unit in order to
interrupt the water supply during
installation, maintenance, repair or
malfunction of the device.
Install the device in a vertical posi-
tion (± 5°). Otherwise, water may
escape and cause water damage.
For the installation of the device
in domestic water piping, only use
the supplied built-in rotary flange
(see chapter 4.2).

Installation
1701649 • 2019/04 JUDO JPF-A 11
The flange surface of the rotary
flange fitting must be upright!
For proper sealing the profile of
the profile flange seal must point
towards the rotary flange fitting
(see Figure 4).
JPF-A ¾" - 2"
Fig. 5: Attach and engage appliance
1 Insert screws
2 Turn clockwise to engage screws
Fig. 6: Connection of appliance
engaged
Do not undo the screws of the device!
1. Insert the heads of the four flange
screws through the bayonet holes on the
rotary flange fitting (see Figure 5).
2. Turn the device in clockwise direction up
to the stop (see Figure 5 and Figure 6).
3. Tighten the four flange screws.
UNIT
Select the tightening torque (about
4 Nm for the pipe connection range
¾" - 1¼" / about 10 Nm for the pipe
connection range 1½" - 2") so that
the seal is effective and the device is
not damaged or strained!
JPF-A 2½" - 4"
Filters with a nominal size of 2½" or more
should preferably be installed in a horizon-
tal line. When operating in a vertical line,
the coarse particles deposited in the sludge
trap cannot be backwashed out as optimally
as when operating in a horizontal line.
4.4 Draining of the backwash
water
CAUTION
An adequately sized waste water
connection (e.g. floor drain) in
compliance with DIN 1986 must be
provided.
In order to ensure safe drink-
ing water hygiene, a free dis-
charge of the waste water acc. to
DIN EN 1717 must be ensured.
Prior to plugging in the device,
ensure that the wastewater con-
nection is functional.
The drain must be large enough so that all
of the wastewater can be drained simulta-
neously.
If a wastewater connection directly beneath
the filter is not possible, the backwash
water can be drained away via a hose or a
pipe that is connected from the backwash-
ing water valve over a few meters to the
closest wastewater connection. The dimen-
sioning of this pipe must correspond to the
backwashing water valve.

Installation
12 JUDO JPF-A 1701649 • 2019/04
4.4.1 Drainage options for the backwash water
JPF-A ¾" - 1¼" JPF-A 1½" - 2"

Installation
1701649 • 2019/04 JUDO JPF-A 13
JPF-A 2½" - 4" JPF-A 2½" - 4"
CAUTION
The ball valves are secured with a sealing adhesive.
When screwing a sewage pipe in the ball valve, the adhesive bond could be dam-
aged.
Secure the ball valve against twisting when screwing in a sewage pipe!
4.5 Commissioning
Prior to initial commissioning (or to com-
missioning after maintenance work) fill the
installed device with water and vent:
1. Open the upstream shut-off valve to fill
the device with water. The device is now
under mains pressure.
2. Plug the power supply unit in.
3. Attention: Carry out a backwashing
immediately so that the trapped air can
escape (see chapter 5.2.5)! This
prevents damage to the installation by
water ham-mer pressure surges.
After backwashing, the device is vented
and ready for operation.

Operation
14 JUDO JPF-A 1701649 • 2019/04
5 Operation
5.1 Warning lights, manual button
1
2
3
4
Fig. 7: Warning lights, manual button
1 Operation
2 Backwashing
3 Fault
4 Manual activation
Operation
•Green continuous light: The device is
now ready for operation.
•Green flashing light: When the power
supply is plugged in, the unit is in the
backwash position. The "Operation" LED
flashes until the backwashing valve is
closed.
Backwashing
•Yellow continuous light: No back-
washing takes place.
•Yellow flashing light: Request for
backwashing with semi-automatic set-
ting.
Fault
•Red flashing light: The device is not
ready for operation (see Chapter 7).
Manual activation
•Press manual button: Backwashing is
triggered.
Maintenance indication
•All three LED flash at the same time
(see Chapter 8.2).
5.2 Cleaning of the sieve insert
(backwashing)
A regular cleaning process is necessary to
remove the residues from the sieve fabric
of the device. This process is called back-
washing.
Suction pipes are provided for backwash-
ing, which rotate around the sieve fabric
of the fine filter. The backwashing valve
opens on the bottom side of the device.
By reversing the water flow from inside to
outside, deposits on the sieve fabric are
carried away and rinsed out with the back-
wash water. The suction pipes also clean
the inside of the transparent filter bowl with
wiper lips during their movement.
The degree of contamination and cleaning
process can be observed from the outside.
INFO_NO_HEADER
The device is backwashed with
filtered water. The filtered water
supply of the domestic installation
remains intact during the backwash-
ing process. No dirty water can reach
the pure water side during the back-
washing.

Operation
1701649 • 2019/04 JUDO JPF-A 15
5.2.1 Backwashing interval
If cleaning is not performed soon enough,
the result may be damage to the sieve
insert. Large quantities of filtered particles
can deform the sieve fabric and in extreme
case lead to tearing of the sieve fabric.
In addition, larger deposit quantities can
impair the backwashing function mechani-
cally.
According to DIN EN 13443-1 backwashing
the device is required at the latest every six
months.
The manufacturer requires a backwash-
ing:
•at least after a month
•if the water pressure drops
•if the filter is visibly dirty
Mesh size [mm] Applications Recommended backwash-
ing interval
0.03 GP surgeries, laboratories,
photo laboratories
24 hours
0.10 Domestic water technology
in the private and commer-
cial sector
1 week, 1 month
0.10 and 0.32 Domestic water technology
Well water
24 hours, 1 week
0.32 and 0.5 Industrial sector
Air conditioning systems
24 hours, 1 week
Selection of the backwashing intervals
1) Dependent on the dirt formation
2) if necessary, securing of the filter acc. to DIN EN 1717
Experience has shown that new installa-
tions in the early stages of installation lead
to increased dirt deposits. In this case, a
more frequent backwashing is necessary.
5.2.2 Setting the backwashing
interval
The factory setting is for a cleaning interval
of one week.
ELECTRO_NO_HEADER
Risk of electric shock!
Disconnect the power supply unit
from the socket.
1. Loosen the four screws of the cover and
remove the cover.
2. Set the backwashing interval via con-
tacts 2 to 6 of DIP switch S1 (see
Tab. 2: DIP switch S1).
Attention: only one contact may be
switched to the left for setting. The cir-
cuit reacts to incorrect settings with a
continuous signal (see chapter 7).
4
Hours
8
Hours
24
Hours
1
Week
1
Month
DIP switch S1
3. Place the cover back on and bolt.

Operation
16 JUDO JPF-A 1701649 • 2019/04
CAUTION
Escaping water!
Before connecting to the power
supply system, make sure that the
waste water connection is func-
tional.
4. Start the backwashing process manu-
ally: Press manual button: The back-
washing interval is reset.
After the backwashing process, the set-
ting of the new backwashing interval is
completed.
5.2.3 Start backwashing
Backwashing is triggered in the following
manner:
•automatically, after the set backwashing
interval has elapsed.
•automatically once the set differential
pressure is reached.
•
by pressing the key (see chapter
5.2.5).
•after short-circuiting the "external back-
wash start" contacts (only "floating" ver-
sion).
5.2.4 Backwashing via differential
pressure control (ATP version
only)
Mode of operation of the differential
pressure switch
The impurities filtered off on the filter fab-
ric cause an increased differential pressure
between the inlet and outlet of the unit with
an appropriate flow rate. The differential
pressure switch registers the differential
pressure applied to the filter. When the dif-
ferential pressure reaches the set value, the
backwashing process is triggered automati-
cally.
The differential pressure switch is flanged
directly to the device via the intermediate
flange.
Setting the differential pressure
The switching values of the differential
pressure switch are adjusted on the adjust-
ing screw. Set this using a screwdriver to a
value between 0.9 psi (6.2 kPa) and 9 psi
(62 kPa) according to the chart. The ex-
works setting is 2.9 psi (recommended set-
ting value 2.9 to 5.8 psi). The differential
pressure at the filter depends on the water
flow rate and the degree of contamination.
If the value is set too high, too much dirt
can accumulate at low flow rates. With
higher water withdrawal, the differential
pressure can then become so high for a
short time that damage can occur to the
sieve.
If the value is set too low, backwashing
is unnecessarily frequent, which leads to
increased wear and backwashing water
consumption.

Operation
1701649 • 2019/04 JUDO JPF-A 17
Caution! Scale unit in bar (1 bar = 14.5 psi / 100 kPa)
Fig. 8: Differential pressure switch
1 Setting screw for differential pressure setting
2 Downstream pressure connection
3 Upstream pressure connection
4 Cable for electrical switching
5.2.5 Manual backwash start
After pressing the key, backwashing is car-
ried out immediately.
5.3 Conversions, changes
WARNING
Unauthorised conversions and
changes are forbidden for safety
reasons. These can impair the
functioning of the device, leading
to leaks and, in the worse case
scenario, to bursting of the device.
Only the supplied power supply
unit may be used to connect the
unit to the power supply. This
reduces the mains voltage for
operating the electronics to a
harmless low voltage of 24 V.
5.4 Maintenance, repair,
spare parts
WARNING
The device may only be repaired
by qualified technical personnel.
Only use original spare parts for
repairs.
Before performing work on the
device that goes beyond pure
operational use, the device
must be depressurised! If this is
ignored, the result may be uncon-
trolled egress of water result-
ing in water damage to the build-
ing/home.

Operation
18 JUDO JPF-A 1701649 • 2019/04
5.5 Temporary removal of the
device
WARNING
If the device is removed due to an
interruption of operation:
•Protect the flange surfaces
against damage to ensure proper
sealing.
•Protect the device from dirt so
as not to impair drinking water
hygiene.
•Store the device in a frost-free
place to prevent damage caused
by freezing water and leakage.
When recommissioning the device, proceed
as with a new installation.
6 Remote control and
remote transmission of
messages
INFO_NO_HEADER
The following chapters are only rele-
vant for the " potential-free " version.
A peripheral device for controlling the
backwash and for transmitting back-
washing and fault indication can be
connected to this type of device.
ELECTRO_NO_HEADER
The device may only be installed
by qualified technical personnel.
The power supply unit must be
connected to make the electrical
installation and to adjust the DIP
switch.
On “potential-free” designs: Only
low voltages can be used for the
remote transmission of the fault
indication via the potential-free
output!
Switching voltage: maximum 24 V
Amperage: maximum 1 A
6.1 Potential-free input
The device has an additional input to which
a peripheral can be connected for control
and an additional DIP switch for setting the
backwash mode for remote control.
Setting the potential-free input
WARNING
The power supply unit must be
connected to make the electrical
installation and to adjust the DIP
switch.

Remote control and remote transmission of messages
1701649 • 2019/04 JUDO JPF-A 19
1. Loosen the four screws of the cover and
remove the cover.
2. Perform settings on the DIP switch S2
acc. to Tab. 3: Setting the Potential-free
input.
3. Place the cover back on and bolt.
Function DIP switch S2 Description
external
backwash
start
Start backwashing
By closing a switching contact (brown and red wire) con-
nected to the potential-free input.
external
backwash
stop
When the switching contact at the potential-free input is
closed (brown and red wire).
Semi-auto-
matic
Relay 2 closes after the backwashing interval time has
elapsed or after the pressure has been exceeded at the
differential pressure sensor, thus indicating the request
for backwashing. At the same time the yellow “Backwash-
ing” LED flashes.
Backwashing can only be started with the manual switch
or on a switching contact connected to the floating input.
Incorrect
setting
Not permissible.
Continuous signal tone until the switch position is cor-
rected.
Setting the Potential-free input
6.2 Potential-free message
The device has an output for transferring
backwashing and fault indication messages
potential-free to a peripheral.
Fig. 9: Relay contact assignments

Remote control and remote transmission of messages
20 JUDO JPF-A 1701649 • 2019/04
In Figure 9 the contacts of the potential-free
relay are marked in the currentless state.
The relay can be connected as closed con-
tact or a open contact :
When the power supply unit is plugged in,
the relay 1 changes its switching state into
“operating”.
If there is a fault indication, the relay 1
switches to “zero-current or fault” state.
When a backwash is started, relay 2
switches to the "backwashing" state.
After a backwash, relay 2 switches to the
"no backwashing" state.