Limited Warranty; Troubleshooting - Stern QUADRAT Serie Manual De Instalación Y Mantenimiento

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 specifications.
- Alteration of the original soap/foam dispenser components (including pipes).
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TROUBLESHOOTING

PROBLEM INDICATOR CAUSE
No water 1.Sensor flashes
coming out continuously
of the faucet: when user's
Low battery.
hands are within
the sensor's
range.
2. LED in the
1. Range is too short.
sensor does not
flash once when
user's hands 2. Range is too long.
are within the
sensor's range.
3. Battery is completely used up
4. Unit is in "Security Mode"*
5. Sensor is picking up reflections from the
washbasin or another object.
3. LED in the
sensor flashes
once when
user's hands are 1. Debris or scale in solenoid.
within the sen-
sor's range.
2. The central orifice in the diaphragm is
plugged or the diaphragm is torn
3. The water supply pressure is higher than
8 bar.
4. The water supply pressure is under 8 bars
and yet the pressure in the faucet's body is
higher. This situation could be caused by a
sudden increase in the water supply pressure
that the backcheck prevents from dropping,
even after water supply pressure drops under
8 bars.
Water flow 1. Sensor flashes
1. Debris or scale in diaphragm
from spout once when
does not user's hands are
2. Connectors between the electronic unit and
stop: within the sen-
the Dual power input box are disconnected or
sor's range.
not connected properly
2. LED in the
1. Sensor is dirty or covered.**
sensor does not
flash once when
user's hands are
2. Sensor is picking up reflections from the
within the sen-
washbasin or another object.
sor's range.
Water flow
Filter or aerator is clogged
diminished
* "Security Mode": If the sensor is covered for more than 90 sec. the faucet will automatically shut off water flow.
To return to normal operation remove any blockage.
** In this case, the water flow will stop anyway after 90 seconds because of the security time.
SOLUTION
Replace battery
Increase the range
Decrease the range
The battery must be replaced.
Eliminate cause of reflection.
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.
Clean the orifice or replace
diaphragm.
Reduce the supply water pres-
sure.
Shut off water supply and un-
screw one of the flexible pipes
in order to reduce the pressure
that blocks the product.
Clean the orifice or replace
diaphragm.
Connect the connectors prop-
erly. Refer to pages 8/13/17 to
see how.
Clean or eliminate case of
interference.
Decrease the range or eliminate
cause of reflection.
Remove, clean, re-install
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