Kohler K-R77748 Assembly instructions

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1320925-2-C
Installation and Care Guide
Guide d’installation et d’entretien
Guía de instalación y cuidado
Electronic Kitchen Sink Faucet
Robinet d’évier électronique
Grifería electrónica de fregadero
K-R77748

IMPORTANT INSTRUCTIONS
WARNING: When using electrical products, basic
precautions should always be followed, including the
following:
DANGER: Risk of electric shock. Connect only to a circuit
protected by a Ground-Fault Circuit-Interrupter (GFCI)*.
WARNING: Risk of electric shock. Grounding is required. A
qualified electrician should make all electrical connections.
WARNING: Risk of electric shock. Disconnect power before
servicing.
WARNING: Risk of injury or property damage. Please read
all instructions thoroughly before beginning installation.
Follow all plumbing, electrical, and building codes.
*Outside North America, this device may be known as a Residual
Current Device (RCD).
Tools and Materials
Important Information
WARNING: Risk of fresh water contamination. This faucet
contains back-siphonage protection. Do not remove any
internal components.
CAUTION: Risk of product damage. This product contains
sensitive electronic components. Do not store open containers of
chemical or cleaning products near this product. Cleaning rags or
sponges must be rinsed with fresh water before storage.
Optional:
Unswitched Electrical Outlet
Plywood Support
Bucket 3/8"
1320925-2-C 2 Kohler Co.

Important Information (cont.)
IMPORTANT! Do not use a switch-controlled electrical outlet
(typically used for garbage disposals) to provide power to the
faucet.
Observe all local plumbing and building codes.
If installing the optional power supply, make sure there is an
unswitched 120 V electrical outlet within reach.
Turn off the water supply.
For new installations, assemble the faucet to the sink before
installing the sink.
Kohler Co. 3 1320925-2-C

Before You Begin
CAUTION: Risk of restricted water flow and product damage.
Supply hoses must not be taut, kinked, or twisted during
installation.
IMPORTANT! Risk of restricted waterflow. The spray hose must
not be taut or kinked when installed.
NOTE: Allow adequate clearance for servicing.
Before installing the faucet, make sure the cabinet area under the
sink can accommodate all of the required components.
If installing the optional power supply, make sure that there is an
unswitched 120 V electrical outlet within reach.
Copper Outlet Tube
Supply Hose
Valve Box
Spray Hose Weight
Spray Hose
Supply Stop
Battery Holder
Unswitched
Electrical
Outlet
(Optional) Battery Holder Wire
1320925-2-C 4 Kohler Co.

1. Install the Faucet
NOTE: Handle orientation is designed to be on the right.
Install the gasket to the faucet with the foam side down.
For three-hole sinks: Place the escutcheon and undercover over
the faucet holes. Insert the faucet through the escutcheon and
mounting surface with the handle on the right.
For single-hole sinks: Insert the faucet through the mounting
surface with the handle on the right.
For thin gauge stainless steel sinks, consider installing a 1/2” (13
mm) plywood support (not supplied) between the washer and
the sink.
Slide the washer and ring over the hoses and wires and up to the
shank.
Thread the ring onto the shank until the washer contacts the
underside of the sink.
Make sure that the faucet is positioned correctly.
Securely tighten the screws.
Escutcheon For
Three-Hole Sinks
Undercover
Washer
Ring
Shank
Plywood
(Optional)
Gasket
Kohler Co. 5 1320925-2-C

2. Connect the Hoses
CAUTION: Risk of restricted water flow and product damage.
Supply hoses must not be taut, kinked, or twisted during
installation. If the supply hoses must be coiled, maintain an inside
diameter of 3″(76 mm).
Connect and tighten the supply hoses to the supply stops.
Place a bucket under the copper outlet tube.
Turn on the water supplies.
Flush hot and cold water into a bucket for 1 minute to remove
any debris.
Ø 3"
(76 mm) Min
Supply Hose
Copper
Outlet Tube
1320925-2-C 6 Kohler Co.

3. Install the Valve Box
IMPORTANT! Risk of restricted waterflow. The spray hose must
not be taut or kinked when installed.
Push the valve box inlet fitting onto the copper outlet tube until a
click is heard.
Push the spray hose connector onto the outlet connector on the
valve box until a click is heard.
Connect the sensor wire to the valve box connector. Align the
arrows on both connectors and push together. Tighten the nut to
secure the connection.
Copper Outlet
Tube
Valve Box
Sensor Wire
Spray Hose
Kohler Co. 7 1320925-2-C

4. Install the Batteries
NOTICE: Before selecting a location for the battery holder, verify
that the battery holder wire will reach the power wire on the valve
box.
Install the mounting screw using the appropriate anchor and
fastener for the cabinet or wall material. Leave enough length to
hang the battery holder.
Press the tab on the battery cover to remove. Insert six AA
batteries into the battery pack.
IMPORTANT! Do not use rechargeable or lithium ion batteries.
Reinstall the cover on the battery holder.
Hang the battery holder on the mounting screw. Adjust the screw
if necessary to secure the battery holder.
Connect the battery holder wire to the power wire on the valve
box.
Mounting
Screw
1320925-2-C 8 Kohler Co.

5. Complete the Installation
Position the Spray Hose Weight
NOTICE: Make sure that the spray hose weight will not interfere
with the valve box or wire connections.
Position the weight on the spray hose as shown and squeeze to
connect the clasp.
Extend and retract the spray hose to check for smooth operation.
Adjust the location of the weight as necessary.
Check for Leaks
Ensure all connections are tight.
Turn on the water supplies and check all connections for leaks.
Test the faucet for proper operation. Refer to the ″Faucet
Operation″section.
2" (51 mm) –
3" (76 mm)
2" (51 mm) –
3" (76 mm)
Kohler Co. 9 1320925-2-C

Faucet Operation
Rotate the handle outward to the open position to start water
flow.
Adjust the handle to the desired water temperature.
Wave your hand under the spout to turn the water OFF.
Wave your hand under the spout again to restart the water flow.
NOTE: For extended periods of nonuse, return the handle to the
closed (upright) position.
Low Battery LED
When the batteries are low, the red LED in the sensor will flash
for 15 days.
Features
Automatic shut-off: After 4 minutes of inactivity, the water will
automatically shut OFF.
Sensor
Open
Position
1320925-2-C 10 Kohler Co.

Manual Sensor Override
In the event of power loss, bypass the sensor function by
engaging the manual override feature on the valve box.
Use a coin to turn the bypass counter-clockwise to engage the
manual override and operate the faucet manually.
Kohler Co. 11 1320925-2-C

Cleaning the Screens
Sprayhead Screen
Turn the handle to the closed position.
Disconnect the sprayhead from the nut at the end of the spray
hose.
Remove and clean the screen inside the sprayhead.
Reinsert the screen and reconnect the sprayhead.
Valve Box Inlet Screen
Turn the handle to the closed position.
Disconnect the valve box from the copper outlet tube.
Unscrew the inlet fitting to remove.
Remove and clean the inlet screen.
Reinstall the inlet screen and inlet fitting. Reconnect the outlet
tube.
Supply Hose Screen
Turn off the water supplies.
Disconnect the supply hose from the supply stop.
Clean the screen inside the hose inlet.
Reconnect the supply hose to the stop.
Turn on the water supplies.
Screen
Sprayhead
Screen
Supply
Hose
Spray
Hose
Copper
Outlet Tube
Inlet Fitting
Valve Box
Inlet Screen
1320925-2-C 12 Kohler Co.

6. Troubleshooting
CAUTION: Risk of product damage. This product contains
sensitive electronic components. Use care not to damage pins and
connectors during troubleshooting.
NOTE: For service parts information, visit your product page at
kohler.com.
Faucet Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. No water flow. A. Closed
supply stops. A. Open the supply stops.
B. Handle is in
the closed
position.
B. Rotate the handle to the
open position. Refer to
the ″Faucet Operation″
section.
C. The hot
and/or cold
supply hose
is kinked.
C. Confirm that the
supply hoses are not
kinked. If coiled,
maintain an inside
diameter of 3″(76 mm).
D. Battery
power is low
or exhausted.
D. Check for the red
flashing LED on the
sensor. Refer to the
″Install the Batteries″
section.
E. Clogged
sprayhead or
valve box
screen.
E. Refer to the ″Cleaning
the Screens″section.
2. Low water flow. A. The supply
stops are
partially
closed.
A. Confirm that the
supply stops are fully
open.
B. Handle is
partially
closed.
B. Rotate the handle to the
full open position.
C. The hot
and/or cold
supply hose
is kinked or
twisted.
C. Confirm that the
supply hoses are not
kinked or twisted. If
coiled, maintain an
inside diameter of 3″
(76 mm).
D. One or more
screens are
clogged.
D. Refer to the ″Cleaning
the Screens″section.
Kohler Co. 13 1320925-2-C

Troubleshooting (cont.)
Faucet Troubleshooting Table
Symptoms Probable Causes Recommended Action
E. Cracked
diaphragm. E. Replace the valve box assembly.
3. Poor spray
pattern. A. The spray nozzles are
clogged.
A. Rub your finger over
the nozzles with water
running to dislodge
debris.
4. Water drips or
trickles when
faucet is not in
use.
A. Manual
override is
partially
engaged.
A. Turn the manual
override
counterclockwise as far
as possible. Then turn
the manual override
clockwise until the
water stops dripping.
Valve Box Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. Water leaking
from the valve
box.
A. Hose
connections
are not
secure.
A. CAUTION: Risk of
personal injury or
product damage. Turn
off the main power and
water supply. Check all
connections. Make
adjustments as needed.
B. Internal leak. B. Replace the valve box.
2. No audible ″click″
when the valve is
activated.
A. Loose valve
box wire
connection.
A. Check the valve box
wire connection.
B. Valve is not
functioning. B. Replace the valve box.
Sensor Troubleshooting Table
Symptoms Probable Causes Recommended Action
1. Intermittent sensor
operation. A. Debris on the sensor lens. A. Use mild soap and water to gently remove
debris from the sensor
lens.
B. Sensor is
detecting
steam.
B. Rotate the spout away
from the steam.
1320925-2-C 14 Kohler Co.

Care and Cleaning
For best results, keep the following in mind when caring for your
KOHLER product:
•Use a mild detergent such as liquid dishwashing soap and warm
water for cleaning. Do not use abrasive cleaners that may scratch
or dull the surface.
•Carefully read the cleaner product label to ensure the cleaner is
safe for use on the material.
•Always test your cleaning solution on an inconspicuous area
before applying to the entire surface.
•Do not allow cleaners to sit or soak on the surface.
•Wipe surfaces clean and rinse completely with water immediately
after cleaner application. Rinse and dry any overspray that lands
on nearby surfaces.
•Use a soft, dampened sponge or cloth. Never use an abrasive
material such as a brush or scouring pad to clean surfaces.
For detailed cleaning information and products to consider, visit
www.kohler.com/clean. To order Care & Cleaning information, call
1-800-456-4537.
Warranty
KOHLER
®
Electronic Faucets, Valves and Controls
FIVE-YEAR LIMITED WARRANTY
Kohler Co. warrants that its electronic faucets, valves and controls will
be free of defects in material and workmanship during normal
residential use for five years from the date the product is installed.
This warranty applies only to electronic faucets, valves and controls
installed in the United States of America, Canada and Mexico (″North
America″).
If a defect is found in normal residential use, Kohler Co. will, at its
election, repair, provide a replacement part or product, or make
appropriate adjustment where Kohler Co.’s inspection discloses any
such defect. 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 Kohler Co. with all warranty claims. Kohler Co. 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 Kohler
Co. exceed the purchase price of the faucet, valve or control.
Kohler Co. 15 1320925-2-C

Warranty (cont.)
If the electronic faucets, valves or controls are used commercially or are
installed outside of North America, Kohler Co. warrants that the
faucet, valve or control will be free from defects in material and
workmanship for one (1) year from the date the product is installed,
with all other terms of this warranty applying except duration.
If you believe that you have a warranty claim, contact your Home
Center, Dealer, Plumbing Contractor or E-tailer. 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.
For other information, or to obtain the name and address of the service
and repair facility nearest you, write Kohler Co., Attn: Customer Care
Center, Kohler, Wisconsin 53044 USA, or by calling 1-800-4-KOHLER
(1-800-456-4537) from within the USA and Canada, and
001-800-456-4537 from within Mexico, or visit www.kohler.com within
the USA, www.ca.kohler.com from within Canada, or
www.mx.kohler.com in Mexico.
THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
KOHLER CO. AND/OR SELLER DISCLAIM ANY LIABILITY FOR
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some
states/provinces do not allow limitations on how long an implied
warranty lasts or the exclusion or limitation of such damages, so
these limitations and exclusions may not apply to you. This warranty
gives the consumer specific legal rights. You may also have other
rights that vary from state/province to state/province. This warranty
is to the original consumer purchaser only, and excludes product
damage due to installation error, product abuse, or product misuse,
whether performed by a contractor, service company, or the
consumer.
This is Kohler Co.’s exclusive written warranty.
*Never use cleaners containing abrasive cleansers, ammonia, bleach,
acids, waxes, alcohol, solvents or other products not recommended
for chrome. This will void the warranty.
1320925-2-C 16 Kohler Co.

Guide d’installation et d’entretien
Robinet d’évier électronique
Kohler Co. Français-1 1320925-2-C

INSTRUCTIONS IMPORTANTES
AVERTISSEMENT : Lors de l’utilisation de produits
électriques, toujours observer les précautions de base,
notamment :
DANGER : Risque de décharge électrique. Raccorder
uniquement à un circuit protégé par un disjoncteur de fuite de
terre (GFCI)*.
AVERTISSEMENT : Risque de décharge électrique. Une mise
à la terre est requise. Un électricien qualifié doit effectuer toutes
les connexions électriques.
AVERTISSEMENT : Risque de décharge électrique.
Déconnecter l’alimentation électrique avant d’effectuer un
entretien.
AVERTISSEMENT : Risque de blessures ou
d’endommagement du matériel. Lire toutes les instructions
avec attention avant de commencer l’installation.
Respecter tous les codes de plomberie, d’électricité et de construction.
* Hors de l’Amérique du Nord, ce dispositif peut être connu sous le
nom de dispositif à courant résiduel (RCD).
Outils et matériel
Informations importantes
AVERTISSEMENT : Risque de contamination de l’eau
potable. Ce robinet comprend une protection contre le
siphonnage à rebours. Ne pas retirer les composants
internes.
Optionnel :
Prise électrique non commutée
Support en contreplaqué
Seau 3/8 po
1320925-2-C Français-2 Kohler Co.

Informations importantes (suite)
ATTENTION : Risque d’endommagement du produit. Ce produit
contient des composants électroniques sensibles. Ne pas entreposer.
les récipients de produits chimiques ou de nettoyage près de ce
produit. Les chiffons ou éponges de nettoyage doivent être rincés avec
de l’eau fraîche avant le stockage.
IMPORTANT! Ne pas utiliser de prise de courant commandée par
interrupteur (généralement utilisée pour les broyeurs de déchets) pour
fournir une alimentation au robinet.
Respecter tous les codes de plomberie et de bâtiment locaux.
Si l’alimentation électrique optionnelle est installée, s’assurer
qu’une prise électrique de 120 V non commutée est à portée de
main.
Couper l’alimentation en eau.
Pour de nouvelles installations, assembler le robinet sur l’évier
avant d’installer ce dernier.
Kohler Co. Français-3 1320925-2-C

Avant de commencer
ATTENTION : Risque de limitation de débit d’eau et
d’endommagement du produit. Les tuyaux d’alimentation ne
doivent pas être tendus, déformés ou tordus pendant l’installation.
IMPORTANT! Risque de débit d’eau restreint. Le tuyau de
vaporisation ne doit pas être tendu ou déformé pendant
l’installation.
REMARQUE : Laisser un dégagement adéquat pour l’entretien.
Avant d’installer le robinet, s’assurer que la zone de l’armoire
sous l’évier peut recevoir tous les composants requis.
Si l’alimentation électrique optionnelle est installée, s’assurer
qu’une prise électrique de 120 V non commutée est à portée de
main.
Tube de sortie en cuivre
Tuyau d'alimentation
Boîtier de vanne
Poids de tuyau
de vaporisation
Tuyau de
vaporisation
Robinet d'arrêt
Porte-piles
Prise électrique
non commutée
(Optionnelle)
Fil de porte-piles
1320925-2-C Français-4 Kohler Co.