Kohler SAN RAPHAEL PRESSURE LITE K-3394 User manual

Kohler Toilets:
K-3394 San RaphaelPressure Lite
Vitreous China Siphon Jet Toilet
K-3404 RialtoPressure Lite
Vitreous China Siphon Jet Toilet

Owner’s Manual
113362-5-FA (9532) Copyright 1995 Kohler Co.



Kohler Co., Kohler WI
113362-5-FA (9532) 2

3113362-5-FA (9532)
Kohler Co., Kohler WI
IMPORTANT OWNER INFORMATION
ATTENTION OWNER: This manual has been designed to acquaint you with the operation,
care and cleaning, and general maintenance of your new Kohler Pressure LiteToilet.
READ AND FOLLOW ALL INSTRUCTIONS
INSTALLER HAZARD NOTIFICATION
WARNING: Risk of injury or water damage.
Contents of reservoir under pressure can cause
severeinjury. Donotopenorservicebeforereading
installation instructions or service instructions.Turn
off water supply and flush unit to release pressure
before attempting any service.
CAUTION: Risk of product damage. Do not use
any oils or lubricants on the Pressure Lite system.
CAUTION: Risk of product damage. The fittings
inthistoiletrequirenoadjustment.Thefittingsinthis
toilet are preset. Anyadjustment ormodifications of
the product are not normal usage and void the
warranty.
WARNING: Risk of injury or product damage.
Handle vitreous china products very carefully.
Vitreouschinacanbreakandchipif youovertighten
bolts and nuts.
NOTICE: Follow all local plumbing and electrical
codes.
PRODUCTPROPERTIES
Vitreous china siphon jet toilet.
Pressure Litesystem.
Water depth from rim is 5-3/4”.
2-1/4” passageway.
Fixturedimensionsarenominalandconformto
tolerances by ANSI/ASME standards
(A112.19.2).
These toilets require 20 pounds per square inch
(P.S.I.) static pressure at the supply stop. Static
pressuremustnotexceed80 P.S.I.atthesupply
stop.
SAVE THESE INSTRUCTIONS

4
113362-5-FA (9532) Kohler Co., Kohler WI
TABLE OF CONTENTS
IMPORTANT OWNER INFORMATION 3. . . . . . . . . .
Installer Hazard Notification 3. . . . . . . . . . . . . . . . .
Product Properties 3. . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THEORY OF OPERATION 5. . . . . . . . . . . . . . . . . . . .
Components 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flush Cycle 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CARE AND CLEANING INSTRUCTIONS 6. . . . . . .
Cleaning Your Vitreous China Toilet 6. . . . . . . . . . .
Cleaning Your Plastic Toilet Seat 6. . . . . . . . . . . . .
MAINTENANCE 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winterizing 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recharging 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING CHART 8. . . . . . . . . . . . . . . .
ADJUSTMENT LOCATION AND PROCEDURE 9. .
Adjustment 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional Service Information 9. . . . . . . . . . . . . . .
IMPORTANT CONSUMER INFORMATION 10. . . . .
Requesting Service 10. . . . . . . . . . . . . . . . . . . . . . . . .
Limited One-Year Warranty 10. . . . . . . . . . . . . . . . . .
INTRODUCTION
All information in this manual is based on the latest
product information available at the time of publication.
Kohler Co. reserves the right to make changes in
product characteristics, packaging, or availability at any
time without notice.
Identify and record below the model and serial number:
Model No. Serial No. Date of Manufacture

5113362-5-FA (9532)
Kohler Co., Kohler WI
1. THEORY OF OPERATION
A. COMPONENTS
Your new Kohler Toilet with its Pressure Lite System
consists of three basic component groups.
•The vitreous china bowl and tank: directs the flushing
water flow and houses the Pressure Lite system.
•The reservoir: contains the complete operating car-
tridge assembly and is the container for the pressurized
1.6 gallons of water used for each flush.
•The control components: consistsof thebackflowpre-
venter,pressureregulator,aspirator,andoutletmanifold.
These components work with the incoming pressurized
supplyline watertoprovide aregulatedpressureflush to
the toilet bowl.
Reservoir
Backflow
Preventer
Pressure Regulator
Piston Assembly
Outlet Manifold
Valve Cartridge
Aspirator
Screen
Adapter
Supply
Hose
B. FLUSH CYCLE
Your Kohler Lite toilet is designed to flush completely
and efficiently using only 1.6 gallons of water per flush
(gpf) as opposed to non-water saving toilets which can
use up to 7 gallons per flush. Your one-piece toilet also
features the Pressure Lite operating system that uses
incoming water supply line pressure to compress air in
a reservoir within the vitreous china tank.
A complete flush cycle is actually two separate
functions.


Trip Lever
Hose
1. Whenthetripleveris operated,thereservoir piston
assembly is lifted allowing water under pressure to
be directed to the siphon jet bowl for complete
flushing action. As the water level in the reservoir
drops the piston will close, stopping water flow to
the bowl.
2. After flushing, a charge cycle takes place. Supply
line water flows into the reservoir through the
backflow preventer and pressure regulator; then
acrossthe aspiratorwhichmixes asmallamountof
air with the water, filling the reservoir until a
pressure of approximately 20 p.s.i. is reached. The
toilet will be ready for the next flush within 60 to 90
seconds. If the toilet is not ready for the next flush
within that time, refer to the troubleshooting chart.

113362-5-FA (9532) Kohler Co., Kohler WI6
2. CARE AND CLEANING INSTRUCTIONS
A. CLEANING YOUR VITREOUS CHINA TOILET
CAUTION: Risk of product damage. Do not
use any oil or lubricants on the Pressure Lite
system. This may result in damage to the system.
NOTE: Cleaning of the Pressure Lite system is not
necessary. If cleaning is desired, use only mild soap
and water.
If you live in a hard water area, you should make certain
that the holes in the rim are kept clean for proper bowl
flushing. Toilet bowl cleaners should be used at least
once a week. Use a long-handled brush to clean the rim
holes and to clean as far into the trap as possible to
prevent mineral deposits from forming.
Do not use abrasive cleaners or solvents.
WARNING: Do not use in-tank cleansers.
Products containing chlorine (calcium
hypochlorite) can seriously damage fittings in the
tank. This damage can cause leakage and
property damage.
Kohler Company shall not be responsible or liable for
any damage to these tank fittings caused by the use of
cleansers containing chlorine (calcium hypochlorite).
B. CLEANING YOUR PLASTIC TOILET SEAT
Kohler toilet seats are color-matched to Kohler fixtures.
Properlycaredfor,theywilllastforyears.Useonlyamild
detergent such as dishwashing soap when cleaning the
seat. When you clean your toilet, make sure you
immediatelywipeoffanycleanerthatmayremainonthe
seat. Thisisespeciallyimportantaroundthehingeareas
and bumpers of the toilet seat. An application of Lemon
Pledgewillrestoretheglosstoplastictoiletseats.Donot
use cleaners containing alcohol or pine oil as they may
cause damage.

7113362-5-FA (9532)
Kohler Co., Kohler WI
3. MAINTENANCE
A. WINTERIZING
If your new toilet is in a bathroom or suite which might
experience freezing temperatures, winterizing the toilet
is recommended.
1. Shut off the water supply. Flush the toilet. Hold the
trip lever down for approximately one minute to
drainthewaterfromthetankassembly.Disconnect
the water supply line.
2. To clean any remaining water from the screen
adapter, backflow preventer, and pressure
regulator, disconnect the supply hose from the
backflow preventer by turning the nut
counterclockwise. Disassemble the screen
adapter, and clean the screen with a medium to
hardbristlebrush.Replacethescreenifnecessary.
After the screen is clean, reassemble in reverse
order making sure the screen is assembled
correctly (see screen detail).
3. Disconnect the outlet tubes from the screen
adapter, backflow preventer, pressure regulator
and aspirator. Snap the backflow preventer,
pressureregulator,andaspiratorassemblyupward
and out of the inlet assembly.
4. Whileholding theaspiratorfirmly, turnthe pressure
regulatorandbackflowpreventercounterclockwise
out of the aspirator. NOTE: Be careful not to drop
the O-ring. Once removed, shake any water from
the backflow preventer and pressure regulator.
5. Replace these assemblies in reverse order making
sure the O-ring is reinstalled between the backflow
preventer, pressure regulator, and aspirator.
6. Add antifreeze to the toilet bowl water to prevent
freezing. Use recreational-type antifreeze
commonly used in campers, motor homes, and
boats.
Trip Lever
Supply
Hose
Backflow Preventer
Pressure Regulator
Nut
Aspirator
O-Ring Inlet Assembly
Reservoir
Supply Stop
Outlet
Tubes
Screen
Adapter
SCREEN DETAIL
B. RECHARGING
Connect the water supply. Turn on the water supply to
bring the Pressure Lite System to operating pressure
(approximately one minute). Check all connections for
leaks. Flush the toilet a minimum of three times to
stabilize the Pressure Lite system.

113362-5-FA (9532) Kohler Co., Kohler WI8
4. TROUBLESHOOTING CHART
Thetroubleshootingguidebelowismeantforgeneralaidonly.Allfittingsinthistoiletexceptforthepistonnutarepreset
by the manufacturer to prevent adjustment. Any attempt to adjust the fittings (except the piston nut and winterizing)
may damage the toilet. Such adjustments for modifications of this product are not normal usage and will void the
warranty. For proper trip lever adjustment procedures, refer to Adjustment Location and Procedure on page 9 in this
manual. Any problems not covered in this chart should be referred to your installer/dealer.
SYMPTOMS PROBABLE CAUSES CORRECTIVE ACTION
1. No flush. A. Supply stop closed. A. Fully open supply stop.
B. Trip lever loose. B. Tighten trip lever nut (turn
counterclockwise to tighten).
C. Trip lever does not actuate piston. C. Adjust piston nut (refer to Page 9).
D. Obstruction within water inlet
components. D. Replace inlet components (refer to installer/dealer for assistance).
E. Screen adapter is clogged. E. Disassemble screen adapter and
clean the screen with a medium to
hard bristle brush. (Refer to Steps 1.
and 2. on Page 7 or installer/dealer.)
Replace the screen if necessary.
2. Poor flush. A. Bowl rim holes clogged A. Clean under bowl rim.
B. Trapway or drain line clogged. B. Plunge bowl, auger trap, auger drain
to clear blockage.
C. System not pressure charged. C. Adjust piston nut for proper actuation
arm gap (refer to page 9).
D. Supply stop not opened. D. Fully open supply stop.
E. Drain line vent clogged. E. Refer to installer/dealer for
assistance.
F. Screen adapter is clogged. F. Disassemble screen adapter and
clean the screen with a medium to
hard bristle brush. (Refer to Steps 1.
and 2. on Page 7 or installer/dealer.)
Replace the screen if necessary.
3. Bowl water
continues to flow or
tank fill water will
not shut off
A. Piston assembly not seating properly. A. Adjust gap between trip lever and
piston actuation arm (refer to Page
9).
not shut off. B. Piston actuation arm binding. B. Repair or replace actuation arm (refer
to installer/dealer for assistance).
C. Pressure regulator not working. C. Replace unit (refer to installer/dealer
for assistance).

9113362-5-FA (9532)
Kohler Co., Kohler WI
5. ADJUSTMENT LOCATION AND PROCEDURE
A. ADJUSTMENT
NOTE: Prior to adjustment of actuation arm or trip lever,
always check the reservoir mounting wing nuts on the
bottom of the toilet tank to ensure they are tight.
If the toilet does not activate, the gap between the trip
lever and piston actuation arm may need to be reset.
Make sure the trip lever handle is installed, and the trip
lever nut is tight. This is a left-hand thread; turn it
counterclockwise to tighten.
Make sure the water supply is on, and the supply line
water has stopped flowing into the toilet.
Turn the piston nut until there is a 1/32” to 1/16” gap
betweenthetrip leverandthepistonactuation arm.Turn
the piston nut clockwise to reduce the gap.
NOTE: Loss of gap clearance adjustment could cause
leakage into the toilet bowl due to the piston not sealing
properly. Thisconditioncouldcausea continuousflowof
water. If the problem is not corrected after adjustment,
refer to the troubleshooting chart.
Piston Actuation Arm
Trip Lever
Piston Assembly
Gap Clearance
Piston Nut
(Turn clockwise to reduce gap,
counterclockwise to increase gap)
Gap Adjustment
(Approximately 1/16”)
B. ADDITIONAL SERVICE INFORMATION
If you would like further service information, you may
order the service manual for this toilet from your dealer.
If you do not want the service manual and the previous
chart has not solved the problem, please refer to your
installer or plumber.

113362-5-FA (9532) Kohler Co., Kohler WI10
6. IMPORTANT CONSUMER INFORMATION
REQUESTINGSERVICE LIMITED ONE-YEAR WARRANTY
Please take a moment to familiarize yourself with the
Kohler Warranty, its benefits, andlimitations. Kohler Co.
and its distributors support you with one of the largest
ServiceNetworksofitstype. Here’swhatyouneed todo
if you require service:
1. Contact the dealer or contractor who sold and
installed the product. They should be able to solve
any problems you may have.
2. If your dealer or contractor cannot solve the
problem
,
the
y
will contact or suppl
y
y
ou with the
Kohlerplumbingfixtures andfittings arewarranted freeof
manufacturing defects.
Kohler Co. will, at its election repair, replace, or make
appropriate adjustment where Kohler Co. inspection
discloses any such defects occurring in normal usage
within one year after installation. Kohler Co. is not
responsible for installation costs.
To obtain warranty service, contact Kohler Co. either
through your Dealer or Plumbing Contractor or by writing
Kohler Co Attn: Consumer Affairs De
p
artment Kohler
roblem
,
they
will
contact
or
su ly
you
with
the
name of the local Kohler Distributor and the:
3. Ifyouareunabletoobtainwarrantyservicethrough
either your contractor or Kohler Co. distributor,
please write us directly at Kohler Co., Consumer
Affairs, Kohler, Wisconsin 53044
4. Include all pertinent information regarding your
claim, including a complete description of the
product, model numbers, colors, finishes, and the
date the
p
roduct was installed Include a
KOHLER TECHNICAL SPECIALIST
K
o
hl
er
C
o.,
Att
n:
C
onsumer
Aff
a
i
rs
D
epar
t
men
t
,
K
o
hl
er,
WI 53044 U.S.A.
Implied warranties, including that of merchantability, are
expressly limited in duration to the duration of this
warranty. Kohler Co. disclaims any responsibility for
consequential damages.
Some states do not allow limitations on how long an
implied warranty lasts or the exclusion or limitation of
incidental or consequential damages, so this limitation
and exclusion may not apply to you. This warranty gives
you specific legal rights. You may also have rights which
d
a
t
e
th
e pro
d
uc
t
was
i
ns
t
a
ll
e
d
.
I
nc
l
u
d
e a
descriptionof theproblem,andaphotocopyofyour
invoice for the products involved. Also give us the
name of the contractor and distributor.
you
s ecific
legal
rights
.
You
may
also
have
rights
which
vary from state to state.
This is our exclusive written warranty.
KOHLER CO., KOHLER, WISCONSIN 53044