Stern Engineering FREE 113100 Product manual

1
free
eLeCTrONIC fLUSH VALVe fOr UrINAL
INSTALLATION AND MAINTENANCE GUIDE

2 1
 TECHNICAL DATA
 PACK CONTENTS
 PRE- INSTALLATION INFORMATION
 FLUSH VALVE INSTALLATION
 SETTINGS ADJUSTMENT
 BATTERY REPLACEMENT
 MAINTENANCE
Filter cleaning instructions
Care and cleaning of chrome and special nishes
 SPARE PARTS LIST
 WARRANTY
 TROUBLESHOOTING
INDeX TeCHNICAL DATA
FREE E

FREE

Power Supply Internal V battery or V transformer
Recommended water pressure  bar .. PSI
Sensor range  mm / .” (customizable with optional
remote control)
Minimum sensor range  mm / .”
Maximum sensor range  mm / .”
Flushing time: Factory setting 6 seconds, adjustable
Hygiene flush A flush is triggered automatically every
 hours aer the last use
Pre flush Optional feature
Connections /”

2 3
Pre-INSTALLATION INfO
Check contents
Separate all parts from the packaging and check each part with the “Pack contents”
section.
Pay attention to the dierent models variations.
Make sure all parts are accounted for before discarding any packaging material.
If any parts are missing, do not attempt to install your electronic product until you
obtain the missing parts.
Warnings
Do not install facing a mirror or any other electronic system operated by an infrared
sensor.
To prevent reflection problems, it is recommended to keep a minimum distance of
. meters between the product and any other objects.
Preparation for installation
Flush water supply lines thoroughly before installing the product. Do not allow dirt,
Teflon tape or metal particles to enter the water line.
Shut o water supply.
Important
All plumbing is to be installed in accordance with applicable codes and regulations.
Note: Keep a minimum distance of mm between the upper surface of the bowl
and the infrared sensor.
Familiarize yourself with the parts names and conrm that all parts are included.
PACK CONTeNTS
1 X 200 mm INLeT PIPe
1 X wALL fLANge wITH rUbber
SeAL
1 X fLUSH VALVe bODy wITH
regULATINg VALVe

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fLUSH VALVe INSTALLATION fLUSH VALVe INSTALLATION

Ensure that the central water
supply has been turned o at the
corner valve.

Install the flush valve on the wall
connected to the mains water supply.
Fit the wall flange between the inlet
opening of the regulating valve and the
surface of the wall.
WALL FLANGE
WATER
SUPPLY PIPE
NOTE: Use the sealing thread or Teflon tape to seal the screw thread connection.

Insert the inlet pipe and rubber
seal into the opening in the urinal.
Push the inlet pipe into the water
outlet opening of the flush valve
and tighten the locking screw LOCKING SCREW

Turn on the mains water supply
again and check the installation
for leaks.

Ensure that the regulating valve
is fully open by turning it anti-
clockwise.

Remove the sticker that is covering
the sensor. The battery is already
connected and the flush valve is
now operational.
IMPORTANT:
Carry out functional check. If the sensor coverage area is not adequate it can be
readjusted following the procedure in the “Settings adjustment” section.

6 7
DETECTION RANGE
DELAY IN TIME
DELAY OUT TIME
TEMPORARY OFF
FUNCTION
R E S E T
 HOUR HYGIENE
FLUSH
Adjusting the settings with the remote control
If necessary, the sensor settings can be adjusted as following:
Shut o the water supply. In order to adjust the sensor with the remote control,
hold the remote control straight in front of the sensor in a distance of about ”
(- cm). Choose the function you want to adjust by pressing once on one of the
function buttons. Aer pressing once on a specic function button, a quick flashing
of the LED at the front of the sensor will occur. At this stage, you can change the
setting by pressing the (+) or the (-) buttons,
Every push will increase or decrease one level. Aer nishing the adjustment, turn
the water supply back on.
FLOW TIME
SeTTINgS ADJUSTmeNT SeTTINgS ADJUSTmeNT
DETECTION RANGE: The sensor range is the greatest distance that an
object can be away from the sensor to activate the flush valve. The
sensor is factory preset.
To adjust the sensor range press + to increase detection range and – to
decrease the detection range of the sensor.
FLOW TIME: This function determines the water flushing time once the
user leaves the urinal.
Press the two waves button. Wait until a quick flashing of the LED of the
sensor eye is perceived. Then, press + to increase the flow time and – to
reduce it.
DELAY IN TIME: If required, the delay in time can be modied as follows:
Press the IN button. Wait until a quick flashing of the LED of the sensor
eye is perceived. Then, press + to increase the delay in time and – to
reduce it.
DELAY OUT TIME: This button changes the time interval the water starts to
flush aer the user has le the urinal. If required, the delay out time can
be modied as follows:
Press the OUT button. Wait until a quick flashing of the LED of the sensor
eye is perceived. Then, press + to increase the delay out time and – to
reduce it.
24 HOUR HYGIENE FLUSH: If you have a compatible model with a 24 hours
hygiene flush it is possible to enable and disable it.
To activate the hygiene flush, press the clock button. Wait until a quick
flashing of the LED of the sensor eye is perceived. Then press + to
activate the hygiene flush or – to deactivate it.
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).
Urinals will remain shut for 1 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 1 minute.
RESET BUTTON: This function allows the sensor to return to the original
factory preset settings. If required, press the Reset button and without
releasing it, press the + button once.

8 9
bATTery rePLACemeNT
Turn o the regulating valve
Unscrew the cover of the electronics
unit and remove it.

Replace the old battery with a
new V battery (lithium battery
recommended).
NOTE: Check that the outer O-ring is not damaged. Replace the O-ring if necessary.
ATTENTION: Dry the inside of the cover and interior of the flush valve body carefully.
The interior of the flush valve body and the cover plate with the electronic cap must
be fully dry before reassembling the parts.

Replace the electronic unit cover
and screw it tight.
Open the regulating valve once
again.
mAINTeNANCe
Important: Spent batteries should not be disposed of with normal
household waste. Contact your local authority for information on waste
disposal and recycling.
FILTER CLEANING INSTRUCTIONS
This flush valve is provided with a steel lter preventing foreign particles to enter the
lines. If the water flow has decreased, this can be because the lter is clogged.
The lter can be cleaned as follows:
. Turn-o the regulating valve.
. Disassemble the electronic flush valve from the regulating valve.
. Remove the lter and wash it under running water.
. Reassemble the lter.
. Reassemble the electronic flush valve.
. Turn on the regulating valve and adjust the flow capacity.
. Make sure that there is no water leakage.
CARE AND CLEANING OF CHROME AND SPECIAL FINISHES
DO NOTuse steel wool or cleansing agents containing alcohol, acid, abrasives, or the
like. Use of any prohibited cleaning or maintenance products or substances could
damage the surface of the flush valve. For surface cleaning of flush valve use ONLY
soap and water, then wipe dry with clean cloth or towel. When cleaning bathroom
tile, the flush valve should be protected from any splattering of harsh cleansers.

10 11
SPAre PArTS LIST
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).
LImITeD wArrANTy
Seals and Screws Kit Free 
Seals and Screws Kit Free E 
-Pack Sensor kit Free 
-Pack Sensor kit Free E 
Filter 
Cover Kit Free 
Cover Kit Free E 
-Pack Solenoid valve kit 
Transformer (EU plug) 
Remote Control B (Optional) 
Soap & Water Remote Control (Optional) 

12
TrOUbLeSHOOTINg
PROBLEM INDICATOR CAUSE SOLUTION
Valve does not
flush: . Sensor flashes
continuously when
the user is within the
sensor’s range.
Low battery. Replace battery.
. LED in the sensor
does not flash when
the user step within
the sensor’s range.
. Range is too short. Increase the range.
. Range is too long. Decrease the range.
. Battery is completely used up The battery must be
replaced.
. Sensor is picking up reflections
from the washbasin or another
object. Eliminate cause of reflection.
. LED in the sensor
flashes when the
user step within the
sensor’s range.
. Connectors between the
electronic unit and solenoid are
disconnected.
Connect the electronic unit
connectors to the solenoid.
. Debris or scale in solenoid.
Unscrew solenoid, pull out
the plunger and the spring
from the solenoid and clean
them. Use scale remover
material if needed. When
replacing the plunger, please
make sure that the spring is
in vertical position.
. The central orice in the
diaphragm is plugged or the
diaphragm is torn
Clean the orice or replace
diaphragm.
. The water supply pressure is
higher than 8 bar. Reduce the supply water pressure.
Valve does not shut
o: . Sensor flashes when the user is
within the sensor’s
range.
Debris or scale in diaphragm Clean the orice or replace
diaphragm.
. LED in the sensor
does not flash when
the user step within
the sensor’s range.
. Sensor is dirty or covered. Clean or eliminate case of
interference.
. Sensor is picking up reflections
from the washbasin or another
object.
Decrease the range or
eliminate cause of reflection.

14
.  B
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