Stern MF SMART Product manual

MULTIFEED SOAP AND FOAM DISPENSERS
WITH TOP FILLING MULTIFEED KIT
InstallatIon and maIntenance guIde
SMART / SMART PLUS / EXTREME / EXTREME PLUS / TRENDY /
TRENDY PLUS / ELITE / ELITE PLUS / GREEN / GREEN 28 / SWAN /
QUADRAT / QUADRAT 2030 / TUBULAR / TUBULAR 2030
EXTREME GREENSMART GREEN 28ELITE SWAN
TRENDY TUBULAR qUADRAT

1
INDEX PAcK cONTENTS
Familiarize yourself with the part names and ensure all the parts are included in your
package.
MF DECK MOUNTED DISPENSERS
FOAMSOAP
1 X FOAM cOMPRESSOR
(FOR FOAM vERSION ONLY)
1 X MF PUMP ASSEMBLY WITH
PUMP SUPPORT AND 3M PIPE
12v
TRANSFORMER
1 X BODY AND FIXING
AccESSORIES
 LIQUID/FOAM DISPENSERS PACK CONTENTS
 TECHNICAL DATA
 PRE-INSTALLATION INFO
LIqUID SOAP DISPENSERS
 TECHNICAL DRAWINGS
 INSTALLATION
 REMOTE CONTROL FUNCTIONS
 SPARE PARTS LIST
 TROUBLE SHOOTING
FOAM SOAP DISPENSERS
 TECHNICAL DRAWINGS
 INSTALLATION
 REMOTE CONTROL FUNCTIONS
 SPARE PARTS LIST
 TROUBLESHOOTING
TOP FILLING MULTIFEED KIT
 MULTIFEED KIT PACK CONTENTS
 INSTALLATION
 FILLING THE SOAP TANK
 LIMITED WARRANTY
 MAINTENANCE
The information in this document reflects products at the date of printing. Stern Engineering Ltd reserves the right, subject to all applicable laws, at any time, at its sole discretion,
and without notice, to discontinue or change the features, designs, materials and other specications of its products, and to either permanently or temporarily withdraw any of the
forgoing from the market. All information in this document is provided “as is” without warranty of any kind, either expressed or implied, including but not limited to any implied
warranties of merchantability, tness for a particular purpose, or non-infringement. Stern Engineering Ltd assumes no responsibility for errors or omissions in the information
presented in this document. In no event shall Stern Engineering Ltd be liable for any special, incidental, indirect or consequential damages of any kind, or any damages whatsoever
arising out of or in connection with the use or performance of this information. The tradenames, trademarks, logos and service marks presented in this document, including their
design, are the property of Stern Engineering Ltd or other third parties and you are not permitted to use them without the prior written consent of Stern Engineering Ltd or such
third party as may own them.

2 3
MF WALL MOUNTED DISPENSERS
FOAM
Familiarize yourself with the part names and ensure all the parts are included in your
package.
PAcK cONTENTS
SOAP
12v
TRANSFORMER
1 X BODY AND FIXING
AccESSORIES
1 X FOAM cOMPRESSOR
(FOR FOAM vERSION ONLY)
TEcHNIcAL DATA
RECOMMENDED HOLE SIZE:
Min: Ø. mm (.”)
Top lling kit: Max: Ø. mm (.”)
Min: Ø mm (.”)
Green  only:
Min: Ø mm (.”)
MF deck mounted
soap dispenser: Max: Ømm (.”)
Green  only:
Max: Ø mm (.”)
Min: Ø Mm (.”)
MF wall mounted
soap dispenser: MAX: ØMM .”
 Liters /. GallonCapacity:
 V TransformerPower Supply:
   cPs
Liquid Soap
Viscosity:
up to  cPs
Foam Soap
Viscosity:
1 X MF PUMP ASSEMBLY WITH
PUMP SUPPORT AND 3M PIPE
Max tube length
3000 nn [118”]
Recommended hole size
Min Ø 32.5mm [1- 1/4”]
Max Ø 35.2mm [1- 3/8”]
/”
mm
”
mm
/”
mm
/”
mm
 /”
mm
TOP FILLING MULTIFEED KIT - 07220090
[1-3/4”]
ø 45mm
Flat seal
ø 48mm x ø 33.5mm x 3.0mm
[1-7/8” x 1-1/4” x 1/8”]
Disk
ø 46mm x 33mm x 2.0mm
[1-3/4” x 1-1/4” x 1/8”]
Nut M32 x 1
 1-1/4”]
M32mm x 1

4 5
MF SMART SOAP DISPENSER

MF TRENDY SOAP DISPENSER

MF GREEN SOAP DISPENSER

MF EXTREME SOAP DISPENSER

MF ELITE SOAP DISPENSER

MF SWAN SOAP DISPENSER

TEcHNIcAL DRAWINGS LIQUID SOAP DISPENSERS
CHECK CONTENTS
Separate all parts from the packaging and check each part with the ‘pack contents’
section.
Make sure all parts are accounted for before discarding any packaging material.
If any parts are missing, do not attempt to install the system until you obtain the missing
parts.
IMPORTANT
) Pay attention to the recommended hole size of the Top Multifeed cap as advised in
the ‘technical data’ section.
) Keep in mind that when using the faucet installed next to the soap dispenser, the
user hands should not interfere with the soap dispenser sensor detection area.
) During pre-installation preparations keep in mind the maximum pipe length
provided for the multifeed installation is  meters.
WARNINGS
) Do not install the soap dispensers facing a mirror or any electronic system
operated by an infrared sensor.
) To prevent reflection problems it is recommended to keep a minimum distance
of . meters between the soap dispensers and any other objects.
Stern liquid / foam soap dispensers, with proper care, will provide long term trouble
free service. Quality liquid soap of recommended viscosity and pH levels are the main
factors for smooth operation of your dispenser. If needed, use a viscometer to verify the
viscosity of your soap to ensure maximum benet. The recommended range for soap
viscosity is  cPs for liquid and up to  cPs for foam soap dispensers. Thicker
liquid soap flows slower and inhibits the pump
valve, causing strain and damage.
Stern liquid / foam soap dispensers are suitable for use with any generic liquid soap of
the correct viscosity and pH. The pH level of all soap used in Stern liquid soap dispensers
should be between 6.5 to 8.5. Lower levels will cause corrosion to the metal dispenser
and even the rubber and plastic components. Higher pH levels will cause swelling to
rubber parts and degradation of plastic components over time.
PRE-INSTALLATION INFO

6 7
TEcHNIcAL DRAWINGS LIQUID SOAP DISPENSERS
MF QUADRAT SOAP DISPENSER

MF QUADRAT SOAP DISPENSER 

MF TUBULAR SOAP DISPENSER

MF TUBULAR SOAP DISPENSER 

MF GREEN  SOAP DISPENSER

MF SMART SOAP DISPENSER PLUS

MF TRENDY SOAP DISPENSER PLUS

MF EXTREME SOAP DISPENSER PLUS

MF ELITE SOAP DISPENSER PLUS

TEcHNIcAL DRAWINGS LIQUID SOAP DISPENSERS

8 9
MF LIQUID DECK MOUNTED SOAP DISPENSERS
INSTALLATION MF LIQUID WALL MOUNTED SOAP DISPENSERS INSTALLATION
STEP 1 – INSTALLING THE MF SOAP DISPENSER

Drill a hole at the desired location on the
wall according to the MF soap dispensers
recommended hole size specied in the
‘Technical Data’ section of this manual.
drill a small hole (4 mm) just above
the main installation hole. consult the
relevant technical drawing.
Remove the hexagonal nut and the disk
from the base of the soap dispenser
spout.
Recommended
hole size
mm
mm

Insert the Soap dispenser base and the
anti-rotation pin into the drilled holes.
Fix the base behind the wall with the
hexagonal nut and the disk.
SOAP DISPENSER BASE
DISK
ANTIROTATION PIN
HEXAGONAL NUT
Fix the soap pump using its support to
the desired location.
IMPORTANT: Make sure the soap pipe from the pump is cut to the length required by
the installation.

Connect the soap tube that extending
from the soap dispenser body to the
quick connector at the top of the soap
dispenser pump by snapping it in.
STEP 1 – INSTALLING THE MF SOAP DISPENSER

Drill a hole in the deck or lavatory
according to the MF soap dispensers
recommended hole size specied in the
‘Technical Data’ section of this manual.
drill a small hole ( mm) just beside
the main installation hole. consult the
relevant technical drawing.
Remove the nut, disk and gasket from
the base of the MF soap dispenser body.
Recommended hole size
Max mm
Min mm
If your dispenser is supplied with
anti-rotation solution, drill an
additional hole for anti-rotation pin.

Install the soap dispenser body along
with the bottom ring into the hole in the
deck or lavatory and slide the gasket,
disk and nut over the soap dispenser
body nipple and secure it.
Fix the soap pump using its support to
the desired location.
IMPORTANT: Make sure the soap pipe from the pump is cut to the length required by
the installation.

Connect the soap tube extending
from the soap dispenser body to the
quick connector at the top of the soap
dispenser pump assembly by snapping
it in.

10 11
INSTALLATION LIQUID SOAP DISPENSERS
MF LIQUID WALL MOUNTED SOAP DISPENSERS
 VERSIONS
INSTALLATION
STEP 1 – INSTALLING THE MF SOAP DISPENSER

Cut an adequate opening in the wall for
the dimensions of the soap dispenser
base (where you want to install the
spout) and the corrugated tube.
Disconnect the soap dispenser body with
the rosette from the base by unscrewing
the set screw.
SET SCREW

Mount the soap dispenser base into the
opening in the wall and secure it using
the two anchors provided in the package.
Important: The soap dispenser base
should be installed so that the outside
surface of the nished wall falls between
the minimum and maximum lines marked
at the base.
Attach the temporary protective soap
dispenser base cover.

Assemble the corrugated tube to the
soap dispenser base and make sure it
stays outside the wall when you do the
tiling.
MIN MAX
STEP 2 – cONNEcTING THE POWER SOURcE
Remove the protective sticker
covering the sensor.

Connect the soap dispenser pump
connector to its matching connector
on the electronic unit. Please
note that since the connector is
waterproof, some pressure must be
applied for a perfect seal.
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
IMPORTANT: the  contacts connector should be connected properly so that the white
o-ring is not visible and a clicking sound is heard.
PAY ATTENTION: If the  contacts connectors are not connected properly, the soap
dispenser pump will not operate properly.

Plug the transformer into the
electricity socket and connect the
transformer connector FROM THE TRANSFORMER TO THE SOAP DISPENSER

Wait about  seconds before placing
your hands in the sensor range to
avoid adjustment mode. 10
SECONDS
ABOUT

12 13
LIQUID SOAP DISPENSERS
REMOTE cONTROL FUNcTIONS LIQUID SOAP DISPENSERS
Top Multifeed Cap Kit 
Soap Filling Kit 
Input Plug Kit 
Coupling cap for 6 tubes and accessories 
Soap Tank L 
Soap Tank Support 
V Transformer EU plug 
V Transformer UK plug 
V Transformer US plug 
V Transformer AU plug 
V Transformer Universal (EU/UK/US) plug 
pack Sensor Kit MF Smart, Trendy, Elite, Extreme, Swan SD 
pack Sensor Kit MF Green SD 
pack Sensor Kit MF Green , Tubular, Tubular , Quadrat, Quadrat  SD 
pack Sensor Kit MF Smart, Trendy, Elite, Extreme Plus SD 
Pump assembly MF Smart, Trendy, Elite, Extreme, Green, Green , Swan, Plus SD 
Pump assembly MF Tubular, Tubular , Quadrat, Quadrat  SD 
Seals and Screws Kit MF Smart, Trendy, Elite, Extreme, Plus SD 
Seals and Screws Kit MF Green SD 
Seals and Screws Kit MF Green  SD 
Seals and Screws Kit MF Swan SD 
Seals and Screws Kit MF Tubular SD 
Seals and Screws Kit MF Tubular  SD 
Seals and Screws Kit MF Quadrat SD 
Seals and Screws Kit MF Quadrat  SD 
Remote Control for Soap Dispenser 
SPARE PARTS LIST
If you acquired the remote control together with your soap dispenser, you may adjust
the dispenser settings if required. To use the remote control hold it straight in front of
the sensor at a distance of about  cm 6”).
Attention: The remote control held out of the recommended range (too close or too far)
will not operate.
The remote control can be used to adjust the following functions:
1-SOAP qUANTITY
The  drop keys allow the user to choose the desired soap quantity.
. to . * . to . . to . . to .
Indication: continuous blinking of the LED in the sensor eye.
*The exact dosage depends on soap viscosity.
2
3
1
4
2-ADJ
This function resets the sensor back to factory
settings.
Indication:  blinks of the LED in the sensor eye.
3-TEMPORARY OFF FUNcTION
This function is ideal to perform any kind of activity
in front of the sensor without operating the system
(for example, cleaning). The soap dispenser will
remain shut for one minute when this button is
pressed once.
To cancel this function and to return to normal
operation press the On/O button again or wait for
one minute.
Indication: OFF –  fast blinks, ON –  fast blinks
4-FILL THE SOAP TANK
Once the soap tank has been lled / re-lled, press
the FILL button. The pump will run for one minute
for priming the soap to the soap dispenser spout.
To stop this activity press the FILL button again. If
the soap has not started coming out of the spout,
press the Fill button again.

14 15
TROUBLESHOOTING LIQUID SOAP DISPENSERS
LIQUID SOAP DISPENSERS
SPARE PARTS LIST
IllustrationSolutionCauseInvestigationIndication
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
The connector should be inserted fully until
white o-ring is not visible. Remove the o-ring if
necessary
AUX connector not
fully inserted
Continuous
discharge from the
nozzle
False
activation:
Soap
dispensing
Min . M
Eliminate any cause of reflection and if
necessary use appropriate remote control to
shorten detection range.
Reflection issue
from other object
Random discharge
from the nozzle
Replace the Pump. Rinse warm water through
the pipe and the body of the soap dispenser all
the way to the nozzle.
Damaged pump
due to high
viscosity or debris
in pipes
Soap discharging
from pump housing.
Fill with soap with correct viscosity (  
cPs) and prime pipes using the ll button on
remote control.
Soap tank is
empty
Pump is making
sounds when sensor
is activated
Soap not
dispensing
Press
FILL
Button
Prime the soap dispenser by pressing the ll
button on the remote or by pressing the rell
button located at the bottom of the pump, until
soap exits the nozzle.
Soap dispenser
has not been
primed
Replace the PumpDamaged pump
(discharge from
housing)
Run warm water through pipe, pump, and body
all the way to the nozzle. Replace with soap of
correct viscosity.
NOTE: Using the soap dispenser with high
viscosity soap may cause permanent damage to
the pump and shorten the lifecycle.
Debris or dried
soap in the pipe
or tank
Soap Viscosity
   cPs)
High viscosity
soap
(>  cPs)
Unbend or straighten pipes.Bent pipes
IllustrationSolutionCauseInvestigationIndication
Ensure that the tip of the inlet pipe is fully
immersed in the soap. For earlier models
check that the pipe has not been pushed so
far that the tip has risen above soap level.
The new models have an additional sleeve
for the pipes preventing this from occuring.
Tip of inlet pipe is not
immersed in soap
Pump is making
sounds when sensor
is activated
Soap not
dispensing
Check that all pipes are connected rmly to
the pump. If necessary remove pipe, cut 7
mm and replace rmly.
6mm pipe connecting
pump to dispenser
outlet has come loose
8 mm pipe connecting
pump to tank has come
loose
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
The connector should be inserted fully until
the white o-ring is not visible. Remove the
o-ring if necessary
AUX connector not fully
inserted
Sensor is
blinking
when
hand is
placed in
front
Pump
is not
making
sound
when the
sensor is
activated
Soap not
dispensing
Press
Replace the Pump. Rinse warm water through
the pipe and the body of the soap dispenser
all the way to the nozzle.
Rell button o n pump
does not activate the
pump.
Damaged pump
(discharge from
housing).
Run warm water through pipe, pump, and
body all the way to the nozzle. Replace with
soap of correct viscosity.
NOTE: Using the soap dispenser with high
viscosity soap may cause permanent damage
to the pump and shorten the lifecycle.
Debris or dried soap in
the tank or tubing
Rell
button
Transformer: Check operation with functioning
transformer. Where necessary replace with
appropriate transformer. For part numbers see
spare parts list.
Rell button on pump
does not activate the
pump.
Sensor
is not
blinking
when
hand is
placed in
front
Battery: Check operation with functioning
battery pack. Where necessary, replace
batteries or replace the battery pack: Battery
pack (without batteries)
Min . M
Eliminate any cause of reflection and use
appropriate remote control to shorten
detection range.
Reflection issue from
other object
Replace
sensor
If the above two solutions have not resolved
this issue replace with appropriate sensor. For
part numbers see spare parts list.
Damaged sensor

16 17
MF FOAM DECK MOUNTED SOAP DISPENSERS
INSTALLATION
MF GREEN  FOAM DISPENSER 
MF TRENDY FOAM DISPENSER 
MF TUBULAR FOAM DISPENSER 
STEP 1 – INSTALLING THE MF SOAP DISPENSER

Drill a hole in the deck or lavatory
according to the MF soap dispensers
recommended hole size specied in the
‘Technical Data’ section of this manual.
drill a small hole ( mm) just beside
the main installation hole. consult the
relevant technical drawing. Recommended hole size
Max mm
Min mm

Insert the soap dispenser body and the
anti rotation pin along with the rosette
into the drilled holes.

Secure the gasket, disk and nut over the
soap dispenser body nipple under the
deck.
TEcHNIcAL DRAWINGS FOAM SOAP DISPENSERS
MF ELITE FOAM DISPENSER 
MF SMART FOAM DISPENSER 

18 19
INSTALLATION
MF FOAM WALL MOUNTED FOAM SOAP DISPENSERS
STEP 1 – INSTALLING THE MF SOAP DISPENSER

Drill a hole at the desired location on the
wall according to the MF soap dispensers
recommended hole size specied in the
‘Technical Data’ section of this manual.
drill a small hole ( mm) just above
the main installation hole. consult the
relevant technical drawing.
Remove the hexagonal nut and the disk
from the base of the soap dispenser
spout.
Recommended
hole size
mm
mm

Insert the Soap dispenser base and the
anti-rotation pin into the drilled holes.
Fix the base behind the wall with the
hexagonal nut and the disk.
SOAP DISPENSER BASE
DISK
ANTIROTATION PIN
HEXAGONAL NUT
Fix the soap pump with support to the
desired location.
IMPORTANT: Make sure the soap pipe extending from the pump is cut to the length
required by the installation.
MF FOAM DECK MOUNTED FOAM SOAP DISPENSERS
INSTALLATION
Fix the soap pump using its support to
the desired location.

Connect the tube extending from the
soap dispenser body to the quick
connection tting at the top of the foam
compressor by snapping it in.

Connect the tube extending from the
foam compressor to the quick connector
at the top of the foam soap dispenser
pump by snapping it in.
IMPORTANT: Make sure the soap pipe extending from the pump is cut to the length
required by the installation.

20 21
INSTALLATION FOAM SOAP DISPENSERS INSTALLATION
MF FOAM WALL MOUNTED FOAM SOAP DISPENSERS
STEP 2 - cONNEcTING THE POWER SOURcE

Remove the protective sticker
covering the sensor. Keep away
from the sensor range.

a. Connect the foam compressor
connector to the matching
connector from the sensor.
Please note that since the
connector is waterproof, some
friction might apply.
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROVES ARE VISIBLE - CONNECTED PROPERLY
IMPORTANT: The  contacts connector should be connected properly so
that the white o-ring is not visible and a clicking sound is heard.
PAY ATTENTION: If the  contacts connectors are not connected properly,
the motor will work continuously.
b. Connect the transformer
connector to the matching
connector from the sensor and
plug the transformer into the
electricity socket.
from the trANSformer to the SoAP DISPeNSer

Wait about  seconds before
you put your hands within the
sensor range to avoid entering
the adjustment mode. 10
SECONDS
ABOUT

Connect the tube extending from the
soap dispenser body to the quick
connection tting at the top of the
foam compressor by snapping it in.
Make sure it is rmly plugged in.

Connect the tube extending from the
foam compressor to the top of the
soap dispenser pump by snapping
it into the quick connection.
IMPORTANT: Make sure to cut the tube to the minimum required length

22 23
FOAM SOAP DISPENSERS
REMOTE cONTROL FUNcTIONS FOAM SOAP DISPENSERS SPARE PARTS LIST
Top Multifeed Cap Kit 
Soap Filling Kit 
Input Plug Kit 
Coupling cap for 6 tubes and accessories 
Soap Tank L 
Soap Tank Support 
V Transformer EU plug 
V Transformer UK plug 
V Transformer US plug 
V Transformer AU plug 
V Transformer Universal (EU/UK/US) plug 
pack Sensor Kit MF Smart, Trendy, Elite, Extreme Foam 
pack Sensor Kit MF Green , Tubular Foam 
Pump+Compressor Kit MF Smart, Trendy, Elite, Extreme,
Green  Foam 
Pump+Compressor Kit MF Tubular Foam 
Seals and Screws Kit MF Smart, Trendy, Elite, Extreme Foam 
Seals and Screws Kit MF Green  Foam 
Seals and Screws Kit MF Tubular Foam 
-pack FD filter 
Remote Control for Foam Dispenser 
If available, the foam dispenser remote control can adjust the dispenser’s settings. To
use the remote control hold it in front of the sensor at a distance of cm (”).
Attention: The remote control will not operate out of the recommended range (too close
or too far).
The remote control can be used to adjust the following functions:
1-SOAP qUANTITY
Press the + sign on the SOAP button to increase the soap quantity by increasing the
dispensing time. Press the - button to decrease it.
Indication: continuous blinking LED in the sensor eye.
2-AIR qUANTITY
To improve soap consistency (“foamability) change the amount air to be mixed. Press the
+ sign on the AIR button to increase the air quantity and the - to decrease it.
Indication:  blinks of the blue light in the sensor eye.
3-RES
This function resets the sensor back to its factory settings.
4-TEMPORARY OFF FUNcTION



This function temporary disables the
dispenser. Use this function to preform
maintenance in front of the sensor without
activating the system (for example: cleaning).
The soap dispenser will shut o for one minute
aer this button is pressed once.
To return to normal operation before the
minute is over, press the On/O button again.
5-FILL THE SOAP TANK
Once the soap tank has been lled \ relled,
press the FILL button. The pump will run for
one minute, priming the piping with soap.
Once soap begins dispensing from the spout,
priming is complete. press the FILL button
again to stop the priming before the minute is
over.
Indication: continuous solid LED in the sensor
eye.

24 25
TROUBLESHOOTING FOAM SOAP DISPENSERS TROUBLESHOOTING FOAM SOAP DISPENSERS
IllustrationSolutionCauseInvestigationIndication
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
The connector should be inserted fully until
white o-ring is not visible. Remove the o-ring if
necessary
AUX connector not
fully inserted
Continuous
discharge from the
nozzle
False
activation:
Foam
dispensing
Min . M
Eliminate any cause of reflection and if
necessary use appropriate remote control to
shorten detection range.
Reflection issue
from other object
Random discharge
from the nozzle
Replace the Pump. Rinse warm water through
the pipe and the body of the soap dispenser all
the way to the nozzle.
Damaged pump
due to high
viscosity or debris
in pipes
Soap discharging
from pump housing.
Fill with soap with correct viscosity (up to 
cPs) and prime pipes using the ll button on
remote control.
Soap tank is
empty
Pump and/or
compressor are
making sounds
when sensor is
activated
Foam not
dispensing
Press
FILL
Button
Prime the soap dispenser by pressing the ll
button on the remote or by pressing the rell
button located at the bottom of the pump, until
soap exits the nozzle.
Soap dispenser
has not been
primed
Replace the PumpDamaged pump
(discharge from
housing)
Run warm water through pipe, pump, and body
all the way to the nozzle. Replace with soap of
correct viscosity.
NOTE: Using the soap dispenser with high
viscosity soap may cause permanent damage to
the pump and shorten the lifecycle.
Debris or dried
soap in the pipe
or tank
Soap Viscosity
up to  cPs)
High viscosity
soap
(> cPs)
Unbend or straighten pipes.Bent pipes
IllustrationSolutionCauseInvestigationIndication
Ensure that the tip of the inlet pipe is fully
immersed in the soap. For earlier models
check that the pipe has not been pushed so
far that the tip has risen above soap level.
The new models have an additional sleeve
for the pipes preventing this from occuring.
Tip of inlet pipe is not
immersed in soap
Pump and/or
compressor are
making sounds when
sensor is activated
Foam not
dispensing
Check that all pipes are connected rmly
to the pump. If necessary remove pipe,
cut  mm and replace rmly.
6mm pipe connecting
pump to dispenser
outlet has come loose
8 mm pipe connecting
pump to tank has come
loose
Replace the pumpDamaged pumpPump is making a
sound when sensor
is activated, but the
compressor is not.
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
Insert fully, remove the O ring if necessaryAUX connector not fully
inserted
Compressor is making
a sound when sensor
is activated, but the
pump is not.
Replace the pumpDamaged Pump
O-RING VISIBLE –
NOT CONNECTED PROPERLY
ONLY THE GROOVES ARE VISIBLE –
CONNECTED PROPERLY
The connector should be inserted fully until
the white o-ring is not visible. Remove the
o-ring if necessary
AUX connector not fully
inserted
Sensor is
blinking
when
hand is
placed in
front
Pump
is not
making
sound
when the
sensor is
activated
Foam not
dispensing
Press
Replace the Pump. Rinse warm water through
the pipe and the body of the soap dispenser
all the way to the nozzle.
Rell button on pump
does not activate the
pump.
Damaged pump
(discharge from
housing).
Run warm water through pipe, pump, and
body all the way to the nozzle. Replace with
soap of correct viscosity.
NOTE: Using the soap dispenser with high
viscosity soap may cause permanent damage
to the pump and shorten the lifecycle.
Debris or dried soap in
the tank or tubing

26 27
TROUBLESHOOTING FOAM SOAP DISPENSERS PAcK cONTENTS
STAND FOR MULTIFEED TANK
1 X LIqUID SOAP TUBE
1 X cLIP FOR PIPES
1 X TOP FILLING KIT
1 X cAP WITH INPUTS FOR 6 TUBES
AND AccESSORIES
1 X cOUPLING NUT
1 X 6 LITERS SOAP TANK
6 X 8mm PLUGS
1 X 6 mm ALLEN KEY
TOP FILLING MULTIFEED KIT
Familiarize yourself with the part names and ensure all the parts are included in your
package.
IllustrationSolutionCauseInvestigationIndication
Rell
button
Check operation with functioning transformer.
Where necessary replace with appropriate
transformer. For part numbers see spare
parts list.
Rell button on pump
does not activate the
pump.
Sensor
is not
blinking
when
hand is
placed in
front
Pump
is not
making
sound
when the
sensor is
activated
Foam not
dispensing
Min . M
Eliminate any cause of reflection and use
appropriate remote control to shorten
detection range.
Reflection issue from
other object
Replace
sensor
If the above two solutions have not resolved
this issue replace with appropriate sensor. For
part numbers see spare parts list.
Damaged sensor
. Increase the air to soap ratio.
Liquid rather than foam
is being dispensed out
of the nozzle
Foam not dispensing
. Verify that the lter is clean.
. Replace compressor (supplied with pump).
For part numbers see spare parts list.
Use remote to decrease soap volume by
pressing the "- Soap" key.
Foam dosage is too
large
Foam is dispensing
Use remote to increase soap volume by
pressing the "+ Soap" key.
Foam dosage is too
small
Use remote to decrease the amount of air in
the foam by pressing the "- Air" Key.
Foam is too dense
Use remote to increase the amount of air in
the foam by pressing the " + Air" key.
Foam is too liqueed

28 29
INSTALLATION TOP MULTIFEED KIT

Drill a hole in the deck or
lavatory according to the top
lling kit recommended hole
size.
Remove the flat seal, disk and
nut from the ba se of the top
lling kit. Recommended hole size
.
.


Place the top lling kit into the
hole in the deck or lavatory and
secure it in place using the flat
seal, disk and nut.

If you are using the soap tank
support x it to the desired
location.
NOTE: Keep in mind the
maximum distance between the
Multifeed dispenser pump and
the Multifeed Kit should not
exceed  meters.
Place the soap tank under the
deck or into the tank support.
INSTALLATION TOP MULTIFEED KIT

If needed, cut the corrugated
soap tube to the correct length as
required by the installation.

Ensure the tube fully covers the
cap outlet and the two o-rings on
the outlet.

Connect the breathe pipe to the
breathe nozzle in the cap.
Ensure both the breathe pipe
and the corrugated tube are
connected to the top lling unit
by means of the clip.

Cut the soap pipe coming from
the Multifeed soap dispenser to
the right length as required by the
installation.
In order for the pipe to reach
the bottom of the tank, make
sure that the end of the pipe is
approximately 2 cm longer than
the tank inner base.

Insert the Multifeed soap
dispensers’ pipes into the holes of
the soap tank cap. Ensure the soap
pipes reach the bottom of the soap
tank and are not bent or curved.
!
NOTE: The Top lling Multifeed
Kit enables installing up to 6
soap dispensers simultaneously.
When installing less than 6 soap
dispensers, make sure to plug the
remaining holes with the provided
8mm plugs.

30 31
FILLING THE SOAP TANK TOP MULTIFEED KIT
STEP 1 - FILLING THE SOAP TANK

Fill the soap tank with liquid soap until it
is full. Open the top lling cap using the
6mm Allen key provided in the package.
Keep the key for future use (soap tank
re-lling).

Refer to the ‘Technical Data’ section
of this manual for soap viscosity
specications.
STEP 2 - PRIMING THE SOAP

Press and hold the rell button located
at the back of the pump assembly
until soap is dispensed from the soap
dispenser spout.
press

Alternately, press the FILL button on the
soap or foam dispenser remote control
(if available). press
FILL
LIMITED WARRANTY
Y. Stern Engineering Ltd. warrants that its electronic products will be free of defects in
material and workmanship during normal use for two years from the date the product is
purchased.
If a defect is found in normal use, Y. Stern Engineering Ltd. will, at its discretion, repair,
provide a replacement part or product, or make appropriate adjustments. Damage
caused by accident, misuse, or abuse is not covered by this warranty. Improper care
and cleaning will void the warranty. Proof of purchase (original sales receipt) must be
provided to Stern Engineering Ltd. with all warranty claims.
Stern Engineering Ltd is not responsible for labor charges, installation, or other
incidental or consequential costs other than those noted above. In no event shall the
liability of Stern Engineering Ltd. exceed the purchase price of the product.
If you believe that you have a warranty claim, contact your Stern Distributor, Dealer or
Plumbing Contractor. Please be sure to provide all pertinent information regarding your
claim, including a complete description of the problem, the product, model number,
the date the product was purchased, from whom the product was purchased and the
installation date. Also include your original invoice.
Y. STERN ENGINEERING AND/OR SELLER DISCLAIM ANY LIABILITY FOR SPECIAL,
INCIDENTAL OR CONSEQUENTIAL DAMAGES. This warranty excludes product damage
due to installation error, incorrect maintenance, wear and tear, battery, product
abuse, or product misuse, whether performed by a contractor, service company, or the
consumer. This warranty does not cover product damage caused by the following:
- Incorrect installation.
- inversions of supply pipes.
- Pressures or temperatures exceeding recommended limits.
- Improper manipulation, tampering, bad or lapsed maintenance.
- Foreign bodies, dirt or scale introduced by the water supply or soap tank.
- Use of the soap outside of viscosity specications.
- Alteration of the original soap/foam dispenser components (including pipes).

32
MAINTENANcE
Care and cleaning of chrome and special nishes
DO NOT use steel wool or cleansing agents containing alcohol, acid, abrasives, or their
like .Use of any prohibited cleaning or maintenance products or substances could
damage the surface of the soap dispenser. For surface cleaning use ONLY soap and
water, then wipe dry with a clean cloth or towel. When cleaning bathroom tiles, the
soap dispenser should be protected from any splattering of harsh cleansers.
Disassemble of the soap pipe from the pump
The soap pipe can be disconnected from the soap pump by a simple slide & pull action.
The sliding ring of the quick connection xation nipple on the pump should be pulled
down. It releases the open end of the soap pipe which can then be easily pulled out.
Filter cleaning instructions (foam dispenser only)
This soap dispenser is provided with a foam lter. It is recommended to clean the lter
every six () months.
If the soap supply has decreased, this may be caused by the clogged lter. The lter
can be cleaned as follows:
. Use a wrench to unscrew the quick connection tting from the foam compressor and
pull out the lter housing.
. Remove the lter from the housing.
. Replace the lter (recommended) or wash it under running water for a temporary x.
. Reassemble the parts.
Add text:
Clean the soap tank
Clean out the tank prior to rell by flushing warm water through the hoses and pump
until clean water is released from the spout. TIP: Keeping a spare tank will enable this
process to be completed in a speedy and hygienic manner with minimal downtime.

. B
 Passaic Avenue, Clifton NJ,, USA
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