Kohler K-10673 Operating manual

Maintenance Guide
Electronic Valve
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de
Mcorresponden a México (Ej.
K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-10673, K-10674, K-10677
1108709-5-C

Table of Contents
EC Declaration of Conformity ............................. 3
Important Information ................................... 4
Your Kohler Electronic Valve .............................. 4
Control Stop Valve Operation ............................. 6
Remove the DC Sensor ................................. 7
Replace the Battery .................................... 8
Reinstall the DC Sensor ................................. 9
Remove the Solenoid .................................. 10
Install the Solenoid .................................... 11
Clean the Screen/Replace the Piston ...................... 12
Clean/Replace the Diaphragm ........................... 14
Replace the Vacuum Breaker ............................ 16
Replace the Flush Button Assembly ....................... 17
Warranty ........................................... 17
Troubleshooting ...................................... 19
Service Parts ........................................ 24
1108709-5-C 2 Kohler Co.

EC Declaration of Conformity
declare under our sole responsibility that our products, ELECTRONIC FLUSH VALVES, models:
We,
Kohler Company
444 Highland Drive, Kohler, WI 53044
Phone [phone]
EC DECLARATION OF CONFORMITY
K-10673
to which this declaration relates, are in conformity with the following standards:
Electromagnetic Compatibility Directive 89/336/EEC of 3 May 1989 as Amended by
92/31/EEC of 28 April 1992 and 93/68/EEC, Article 5 of 22 July 1993, based on:
• IEC 61000/ IEC 61000-3-:
"Electromagnetic Compatibility (EMC)";
Part 3: "Limits".
Section 2. "Limits for harmonic current emissions (equipment input current up to and including
16A per phase" (2000).
Section 3. "Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage
supply systems, for equipment with rated current <16 A per phase and not subjected to
conditional connection" (1995 + A1:2001).
• EN 61000-6-2/ EN 61000-6-2:
"Electromagnetic Compatibility (EMC) – Part 6-2: Generic standards – Immunity for industrial
environments" (2001).
• EN 55022 Class B:
"Information technology equipment – Radio disturbance characteristics – Limits and methods of
measurements" (1998 A1:2000 + A2:2003).
Low Voltage Directive 73/23/EEC of 19 February 1973 as Amended by 93/68/EEC, Article 13 of
22 July 1993, based on:
• EN 60730/1:
"Specification for Automatic Electrical Controls for Household and Similar Use. General
Requirements".
• EN 60730/2/8:
"Specification for Automatic Electrical Controls for Household and Similar Use. Particular
Requirements for Electrically Operated Water Valves, Including Mechanical Requirements".
Timothy J. Stessman
Codes & Standards Dept.
Kohler Company
November 18, 2008
DateSignature
November 18, 2008 08
K-10677
K-10674
K-10678
K-10675
K-10679
K-10676
Kohler Co. 3 1108709-5-C

Important Information
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including
interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful 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 interference 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 correct 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/television technician
for help.
Modifications: Any modifications made to this device that are not
approved by Kohler Co. may void the authority granted to the user by
the FCC to operate this equipment.
This Class B digital apparatus complies with Canadian ICES-003.
Your Kohler Electronic Valve
Design Features
The valve is designed specifically for use with 1-1/2″(1.9 cm) top spud
toilets as offered by Kohler Company and others.
The valve is supplied with factory preset timing values. No
programming or adjustment is required.
1108709-5-C 4 Kohler Co.

Your Kohler Electronic Valve (cont.)
Depending upon use, the ″AA″alkaline batteries can be expected to
last for two to three years before replacement is required.
Flush Operations
The exposed electronic valve provides the following flushing
operations:
A wave activated main flush operation: Shortly after the
individual departs the fixture, the valve provides a main flush
that lasts for several seconds.
An automatic 24-hour flush operation: After 24-hours of non-use,
the valve produces a full flush.
Low Battery Indication
The 1.5 volt ″AA″alkaline batteries can be expected to last for two to
three years before replacement is required. When the battery reaches a
certain point in its lifetime, the valve announces the low battery
condition by continuously flashing an LED whenever a user is in
range. The batteries are easily replaced as described in the section
″Replace the Batteries″in this guide.
Seasonal Use
The exposed electronic valve is not designed for operation in freezing
conditions. If freezing conditions are expected, isolate and drain the
valve along with whatever other winterization steps are taken for the
facility.
Mobile Use
The exposed electronic valve is not designed for use in moving
environments such as boats.
Kohler Co. 5 1108709-5-C

Control Stop Valve Operation
NOTICE: Refer to this section throughout the Maintenance Guide
when instructed to close and open the control stop valve.
NOTE: A strap wrench must be used to remove the stop cap and
adjust the valve position.
Using a strap wrench, remove the vandal-resistant stop cap from
the control stop.
To close the stop valve: Turn the valve screw clockwise as far as
it can go.
To open the stop valve: Turn the valve screw counterclockwise as
far as it can go.
When done, place the stop cap on the control stop, then retighten
with a strap wrench.
Wall Flange
Wall Tube
Control Stop
Stop Cap
1108709-5-C 6 Kohler Co.

Remove the DC Sensor
Close the control stop valve.
Using a 3/32″hex wrench, remove the setscrew from the cap.
Carefully lift the cap from the valve body.
Grasp each side of the connector pair, then pull apart the DC
sensor connector from the solenoid. Do not separate the
connector pair by pulling on the wires.
Position the cap on its side.
Using a 3/32″hex wrench, loosen the screw of the wedge lock
system (not shown) that holds the DC sensor in place inside the
cap.
Turn the cap over and slide the sensor into your hand.
NOTE: The batteries inside the sensor may be considered hazardous
waste. Discard the old sensor and/or batteries in accordance with
any applicable codes.
If replacing the DC sensor, discard the old DC sensor and
batteries.
Cap
Setscrew
DC Sensor with Clip
DC Sensor
Connector
Kohler Co. 7 1108709-5-C

Replace the Battery
NOTE: It is not necessary to remove the sensor from the cap to
replace the batteries.
Using a 3/32″hex wrench, remove the two screws from the
bottom of the DC sensor.
Remove the battery cover and pull out the battery holder.
NOTE: The batteries may be considered hazardous waste. Discard
the old batteries in accordance with any applicable codes.
Remove and discard the old batteries. If necessary, use a small
flat-blade screwdriver to pry the batteries from the battery holder.
Align the metal poles on the new battery to contact the metal
electrodes in the battery holder. Take care to properly position
each battery, as shown on the battery holder.
Insert four new 1.5 volt ″AA″alkaline batteries into the battery
holder.
NOTICE: Do not overtighten the screws. The plastic threads can be
easily damaged.
Reinstall the battery holder and battery cover. Retighten the
screws on the battery holder.
DC Sensor
Batteries
Screws
Battery Cover
Battery Holder
1108709-5-C 8 Kohler Co.

Reinstall the DC Sensor
NOTE: The DC sensor must be installed as shown in the
illustration.
Hold the cap horizontally with the sensing holes down and align
the DC sensor with the cap.
Slide the DC sensor into the cap until the sensor eyes align with
the holes in the cap.
Using a 3/32″hex wrench, tighten the screw on the wedge lock
system (not shown) that holds the DC sensor in place in the cap.
Connect the DC sensor connector to the solenoid connector on the
valve. Ensure that the connector pair is fully seated.
Locate the connector assembly adjacent to the sensor body to
prevent pinching when cap is reinstalled on the valve.
Place the cap on the valve body.
Align the sensor eyes toward the user.
NOTICE: Do not overtighten the setscrew. The plastic threads can be
easily damaged.
Secure the cap with the setscrew.
Open the control stop, reinstall the cap, then tighten firmly with a
strap wrench.
Verify the valve functions.
Cap
Setscrew
DC Sensor with Clip
DC Sensor
Connector
Kohler Co. 9 1108709-5-C

Remove the Solenoid
Close the control stop valve.
NOTE: If the unit has not flushed since the stop valve was closed,
the inlet arm may still be pressurized. Use the manual flush button
to release pressure.
Using a 3/32″hex wrench, remove the setscrew from the cap.
Remove the cap by lifting from the valve body.
Pull the two connectors apart to disconnect the DC sensor
connector from the solenoid connector.
Temporarily store the cap and DC sensor assembly in a safe
place.
Using an adjustable wrench, turn the solenoid assembly
counterclockwise to remove the solenoid assembly from the valve
body.
Valve Body
Diaphragm
Cap
Setscrew
O-Ring
Piston
Retaining Nut
Pin
Spring
DC Sensor
Connector
Solenoid
Connector
Solenoid
Assembly
Piston
Cover
1108709-5-C 10 Kohler Co.

Install the Solenoid
Align the solenoid with the hole in the piston cover, then set it
into place.
NOTICE: Do not overtighten the solenoid. Damage to the solenoid
can occur.
Using an adjustable wrench, turn the solenoid clockwise to
tighten it.
Connect the DC sensor connector to the solenoid connector.
Locate the connector assembly next to the sensor body to avoid
pinching.
NOTICE: Ensure that the solenoid wires are not caught between the
cap and the valve body.
Place the cap on the valve body, then secure with the setscrew.
Open the control stop valve.
Verify the valve functions.
Valve Body
Diaphragm
Cap
Setscrew
O-Ring
Piston
Retaining Nut
Pin
Spring
DC Sensor
Connector
Solenoid
Connector
Solenoid
Assembly
Piston
Cover
Kohler Co. 11 1108709-5-C

Clean the Screen/Replace the Piston
NOTE: A screen (part of the piston assembly) is provided to keep
debris from clogging the bleed hole. The screen may require
periodic cleaning.
Close the control stop valve.
NOTE: If the unit has not flushed since the stop valve was closed,
the inlet arm may still be pressurized. Use the manual flush button
to release pressure.
Using a 3/32″hex wrench, remove the setscrew from the cap.
Remove the cap from the valve body.
Pull the connectors apart to disconnect the DC sensor connector
from the solenoid connector.
Temporarily store the cap and DC sensor in a safe place.
Using a large adjustable wrench, remove the large retaining nut
from the valve body.
Gently pull the solenoid up, then remove the piston cover from
the valve body.
Gently brush and rinse all debris from the screen on the piston. If
required, use vinegar to remove hard water deposits.
NOTE: Replace the piston as a complete assembly only. The piston
and screen are not serviced separately.
Valve Body
Diaphragm
Cap
Setscrew
O-Ring
Piston
Retaining Nut
Pin
Spring
DC Sensor
Connector
Solenoid
Connector
Solenoid
Assembly
Piston
Cover
1108709-5-C 12 Kohler Co.

Clean the Screen/Replace the Piston (cont.)
Insert the piston into the valve body.
Insert the piston cover with attached solenoid into the valve body.
Place the O-ring on top of the piston cover.
NOTE: If the retaining nut is not fully tightened, the valve will run
continuously.
Thread the large retaining nut into the valve body, then securely
wrench tighten.
Connect the DC sensor connector to the solenoid connector.
Place the cap on the valve body, then secure with the setscrew.
Open the control stop valve.
Verify the valve functions.
Kohler Co. 13 1108709-5-C

Clean/Replace the Diaphragm
NOTICE: Ensure that the wires do not get caught between the cap
and the valve body.
Close the control stop valve.
NOTE: If the unit has not flushed since the stop valve was closed,
the inlet arm may still be pressurized. Use manual flush button to
release pressure.
Using a 3/32″hex wrench, remove the setscrew from the cap.
Remove the cap from the valve body.
Pull the connectors apart to disconnect the DC sensor connector
from the solenoid connector.
Temporarily store the cap and DC sensor assembly in a safe
place.
Using an adjustable wrench, remove the solenoid.
Remove the diaphragm.
NOTE: Take care not to lose any small parts contained within the
solenoid assembly.
Rinse any debris from the diaphragm.
If replacing, insert a new diaphragm in the valve.
Insert the diaphragm with the plastic side facing out from the
valve.
Valve Body
Diaphragm
Cap
Setscrew
O-Ring
Piston
Retaining Nut
Pin
Spring
DC Sensor
Connector
Solenoid
Connector
Solenoid
Assembly
Piston
Cover
1108709-5-C 14 Kohler Co.

Clean/Replace the Diaphragm (cont.)
Align the solenoid to the hole in the valve body, then set into
place.
Using an adjustable wrench, tighten the solenoid.
Connect the DC sensor connector to the solenoid connector.
Place the cap on the valve body, then reinstall the two screws.
Open the control stop valve.
Verify the valve functions.
Kohler Co. 15 1108709-5-C

Replace the Vacuum Breaker
Close the control stop valve.
NOTE: If the unit has not flushed since the stop valve was closed,
the inlet arm may still be pressurized. Use manual flush button to
release pressure.
Using a large adjustable wrench, loosen the large tube nut at the
base of the valve body. Let the tube nut slide down the tailpiece.
Gently rotate the top of the valve body away from you while
pulling the top of the tailpiece toward you. Separate the tailpiece
from the valve body. The vacuum breaker should now be exposed
for removal.
Remove the loose fiber washer and vacuum breaker from the
tailpiece. Discard both the fiber washer and vacuum breaker.
Install a new vacuum breaker into the tailpiece and place a new
fiber washer on the top of the vacuum breaker.
Gently rotate the tailpiece and valve body back together until the
large tube nut can be threaded onto the bottom of the valve body.
Using a large adjustable wrench, tighten the large tube nut.
Open the control stop valve.
Verify the valve functions.
Tailpiece
Valve Body
Escutcheon
Coupling Nut
Rubber Seal
Fiber Washer
Large Tube Nut
Inlet Arm Nut
Control Stop
Fiber Washer
Vacuum Breaker
1108709-5-C 16 Kohler Co.

Replace the Flush Button Assembly
Close the control stop valve.
NOTE: If the unit has not flushed since the stop valve was closed,
the inlet arm may still be pressurized. Use manual flush button to
release pressure.
Carefully place a properly sized spanner wrench or a pair of
needle-nose pliers into the holes on the end of the flush button.
Remove the flush button assembly from the valve body.
NOTE: The flush button can only be serviced as a complete
assembly. There are no serviceable internal parts.
Carefully thread a new flush button assembly into the valve body.
Tighten with a spanner wrench or needle nose pliers.
Open the control stop valve.
Verify the valve functions.
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
Holes
Flush Button
Assembly
Valve Body
Kohler Co. 17 1108709-5-C

Warranty (cont.)
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.
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 1-800-4KOHLER
(1-800-456-4537) from within the USA and Canada, and
001-877-680-1310 from within 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
1108709-5-C 18 Kohler Co.

Warranty (cont.)
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.
Troubleshooting
•This troubleshooting guide is for general aid only. The steps are
recommended rather than required. This guide should provide an
indication of the probable fault and a suggested correction. For
warranty service, contact your dealer or wholesale distributor.
•For replacement parts, call the Kohler Customer Care Center at
1-800-4-KOHLER from 7 AM to 6 PM Central Standard Time or
order online 24 hours at www.kohler.com.
•All work should be performed by properly qualified or licensed
personnel as required by local codes.
Kohler Co. 19 1108709-5-C

Troubleshooting (cont.)
Symptom Probable
Cause Recommended Action
1. No flow. A. Water is
not turned
on.
•Verify that the water supply is
turned on and that water
pressure is at a minimum of 20
psi (1.4 bars).
•Verify that the control stop is
fully in the open position.
B. Loose
connection.
•Remove the valve cover.
•Check the connection from the
sensor to the solenoid.
C. Wires are
pinched or
damaged.
•Remove the valve cover.
•Inspect the wires for cuts or
damage.
•If required, order a new
solenoid or a new sensor
assembly.
•Verify that both wires are
tucked inside the cover before
reassembling.
D. Battery life
has
expired.
•NOTE: The unit requires four
standard 1.5 volt ″AA″alkaline
batteries. This item is not
available from Kohler but can
be purchased at convenience
stores.
•Follow the directions of
″Replace the Batteries″section
in this guide.
E. Solenoid is
broken.
•Order a new solenoid service
kit.
F. Sensor
eyes are
scratched.
•Replace the sensor assembly.
Follow the directions of
″Remove the DC Sensor″and
″Install the DC Sensor″sections
in this guide.
G. Bleed hole
in the
diaphragm
is plugged
or debris is
on seal.
•Follow the directions of
″Clean/Replace the
Diaphragm″section in this
guide.
•NOTE: Take care to replace the
diaphragm in its seat before
installing it into the valve body.
1108709-5-C 20 Kohler Co.