Toto USWN900 Series Guide

USWN900 Series
Auto Flush Urinal
Instruction Manual
with Warranty
Maintenance
What to Do?
Reference
Introduction
Operation
• Safety Precautions ...................... 2
• Part Names ................................. 7
• Operation System ....................... 8
• Pre-flush Setting.......................... 9
• Routine Maintenance ................ 10
• Periodic Inspection.................... 15
• Troubleshooting ........................ 18
• Backup Battery Replacement
(Dry Type) ................................. 16
• Urinal FAQ ................................ 26
• After Sales Service.................... 28
•Thank you for your recent purchase of the TOTO Auto
Flush Urinal.
Please read this Instruction Manual carefully to ensure
the safe use of your product.
•Be sure to check that details such as the name of the
installer and installation date are entered on the
warranty.
•Keep this Instruction Manual in a safe place for future
reference.

2
Safety Precautions
For safety, be sure to follow these
CAUTION
• After reading these precautions, be sure to keep them in a place where they can be referenced at any
time by users of the product.
• This manual uses various symbols to indicate information for the safe and correct use of the product,
and prevent harm to you or other people or damage to property.
The symbols and their meanings are as follows.
The types of information that must be followed are classified and described with the following symbols.
WARNING
indicates a prohibited use of the product.
The symbol on the left means “Do not disassemble”.
is used to indicate a required step in the use of this product.
The symbol on the left means “Required”.
Read these "Safety Precautions" carefully before using your product to ensure safe use.
Incorrect product handling that ignores the information in
this section may result in injury or property damage.
Incorrect product handling that ignores the information in
this section may result in death or serious injury.
* “Property damage” means damage to houses, household belongings, livestock or pets.
WARNING
Figures and part shapes may differ slightly from the actual product depending on the product part number.
Never use in a wet place, such as a bathroom,
where condensation may form on the surface
Do not use in
a wet place
Do not
touch
Do not plug or unplug the connector with
wet hands
Never touch the power terminal with your hands
while power is being supplied
Wet hands
prohibited
Do not touch the controller during thunderstorms
(For AC220 V type)
(For AC220 V type)
Doing so may cause malfunctions or
electrical current leaks.
Doing so may cause electrical shock.
Doing so may cause electrical shock.
Doing so may cause electrical shock.

3
Introduction
Pacemaker
The magnet is a separately sold part.
WARNING
Do not use a power supply other than
AC220 V
Keep the cleaning magnet away from people
with implanted electronic medical devices
such as pacemakers, and other electronic
medical devices
Do not wash the entire product with water
Do not
disassemble
Prohibited
(For AC220 V type)
(For self powered type)
(For self powered type)
Do not perform disassembly or alterations
other than as described in this manual
Do not perform charging, disassembly,
modification, alteration or forcible electric
discharge heating of the backup battery, or
place it in a fire
Doing so may cause fluid leaks, rupture or fire.
Do not use a battery other than the
designated backup battery that is supplied
Doing so may cause malfunctions.
Otherwise, the medical device may not operate
correctly, resulting in a life-threatening accident.
Doing so may cause fire or electrical shock.
Also, malfunctions such as water shutoff or spray
defects may occur or the apparatus may be
damaged, causing injuries or damage to property
due to water leaking onto household belongings, etc.
Using an power supply other than AC220 V
may cause fire or malfunctions.
Doing so may cause malfunctions or electrical
current leaks.
Backup battery Backup
battery

4
The magnet is a
separately sold part.
Be very careful when handling the cleaning
magnet, because it has a strong attraction force
Otherwise, your hands or fingers may be trapped and
injured between the magnet and another magnet, or
between the magnet and a magnetic object such as
metal pieces, a knife or scissors. Also, the magnet
may crack and scatter fragments into your eyes.
Required
WARNING
CAUTION
Do not place objects inside the bowl
Do not pour hot water into the urinal
Air
freshener,
ice, etc.
Doing so may damage the urinal and cause
an injury, or cause damage to property due to
water leaking onto household belongings, etc.
Doing so may block the drainage channels
and cause flushed water to overflow from the
urinal, resulting in damage to property due to
water leaking onto household belongings, etc.
Do not apply strong force or impacts to the urinal
Prohibited
Doing so may damage the urinal and cause an
injury, or cause damage to property due to
water leaking onto household belongings, etc.
If the urinal is cracked or broken, never
touch the damaged parts or use the urinal
Doing so may cause an injury from the damaged parts.
Replace at an early opportunity.

5
Introduction
CAUTION
Keep the cleaning magnet away from objects
such as floppy disks, magnetic cards, magnetic
tape, prepaid cards, tickets and cathode ray
tubes
If magnetic storage media are placed near the
magnet, the recorded data may be damaged.
Keep the cleaning magnet away from
precision devices such as wristwatches
and cellular phones
Otherwise, the device may malfunction.
Prohibited
The magnet is a
separately sold part.
The magnet is a
separately sold part.
Do not use or store the magnet in a wet
or humid location
Do not heat the cleaning magnet, or use
or store the magnet in a hot location
The magnet is a
separately sold part.
The magnet is a
separately sold part.
Doing so may impair the function of the
cleaning magnet.
Doing so may impair the function of the
cleaning magnet.
The magnet is a
separately sold part.
Keep the cleaning magnet away from
electronic devices
Otherwise, instruments or control circuits
may be affected, resulting in accidents or
malfunctions.

6
Vinyl
sheet,
etc.
CAUTION
Wipe off any condensation from the surface
of the urinal or other parts with a dry cloth
Required
Wipe any urine, condensation, detergent,
water, etc. that has gotten on the floor with
a well-wrung mop or cloth
Leaving such substances on the floor may
cause staining or corrosion.
If the urinal is clogged, be sure to close the shutoff
valve before unclogging the urinal with a commercially
available tool that is made for unclogging toilets (such
as Rubber Cup (product name))
If water is flushed while the urinal is clogged, waste
water may overflow and cause damage to property
due to water leaking onto household belongings, etc.
When storing the backup battery before using
it in the product or after removing it from the
product, store in a well-ventilated, dry location
not exposed to significant temperature rises
Otherwise, the function of the backup battery
may be impaired.
Failure to do so may cause staining or corrosion
of the floor.
* Ventilating the toilet with a fan or by opening a
window, etc. makes it difficult for condensation
to form.
(For self powered type)
Backup battery

7
Introduction
Part Names
Top lid
Shutoff valve
Decorative bolt
Valve unit
Main unit
Drain trap
Drainage flange
Backup battery
(Dry Type)
Photoelectric
sensor
Spreader
Controller
Wall Mounted Urinals USWN900AE (AC), USWN900AS (Sterilization
Type), USWN900A (DC Dry Type), USWN900AES (AC Button Type),
USWN900ASS (Sterilization Button Type)

8
* Super water saving
type only
“ewater+” cleaning
Operation System
Detection
Interval discharge pipe flush
Main flush
A person approaching
the urinal is detected
by the sensor.
After use, the urinal is
flushed when the
person moves away
from the urinal.
Pre-flush
The urinal is flushed
before use.
The setting described
on Page 9 must be
configured to activate
the pre-flush.
CAUTION
The urinal is flushed
automatically every 2 hours
to reduce urolith adhesion
on the urinal trap and
discharge pipe.Discharges water six times
a day at times of infrequent
use.
This reduces urolith
adhesion on the trap of the
urinal.
every 2 hours
This product has the following automatic flushing functions.
<Interval discharge pipe flush>
In addition to flushing after every use, discharge pipe flushing is performed every 2 hours.
Discharge pipe flushing is performed efficiently using 2 flushes, reducing urine accumulation
and urolith adhesion inside the discharge pipe.
<Intermittent spray flush>
To prevent damage due to sudden winter cold in normally temperate regions, the ambient
temperature is detected and intermittent flushing is performed to minimize the risk of freezing.
<“ewater+” cleaning> * Super water saving type only
Time periods when the urinal is not used for a long time, such as at night, are judged
automatically and the trap is filled periodically with "ewater+". Because the occurrence of
dirt inside the trap is reduced, the flush volume after use can be reduced.
* “ewater+” is water created by electrolyzing chloride ions contained in tap water, and
includes sanitizing components (hypochlorous acid).
* In the AC type, water is flushed when the power supply recovers after a power outage.
This is normal.
The above effects cannot be obtained while the power supply is off.
CAUTION

9
Operation
Controller
Open the setting
switch
cover
Controller
ON
1234
Controller
Waterproof
cover
Switch
ON
1234
Switch
Pre-flush Setting
Pre-flush setting method
Switches and settings
Open the setting switch cover
on the controller and set
switch No. 1 to “ON”.
For details, check the caution
label attached to the product.
Do not apply excessive force
to the switch.
After setting, return the
waterproof cover, controller
and setting switch cover to their
original installation condition.
* When the product is shipped, pre-flush is set to “OFF”. Change the setting as required.
Although the Auto Flush Urinal is effective in reducing urolith adhesion,
it does not remove urolith that has already adhered. (The frequency of
periodic flushing can be reduced, but does not become unnecessary.)
Interval discharge pipe flushing is performed automatically every 2 hours.
Keep the power supplied 24-hours a day.
Switch
No. Setting
Pre-flush
Interval discharge
pipe flush
1
2
No
Yes
Yes
No
+0.3 L/flush
-24 L/day
ON
Approx. change in water
volume used when OFF→ON
OFF
(initial setting)
* When interval discharge pipe flush
is set to off (switch No.2 set to “ON”),
the effect of reducing urolith adhesion
is no longer obtained.

10
Wire brush
Sandpaper Abrasive nylon
scrubbing pad
Acidic
detergent
Detergent
containing
abrasive
compounds
Strongly acidic
or strongly
alkaline
detergent
Fluorine-based
detergent*1
Neutral
detergent
Alkaline
detergent
Usable detergents for
porcelain unit cleaning
Components of detergent or
coating agent cover the
CeFiONtect surface.
Ion power layer
Acidic
detergent
Neutral
detergent
Alkaline
detergent
For busihess
use
For busihess
use
[Cleaning the porcelain unit]
Any commercially available household
detergents can be used, regardless of
whether they are acidic, neutral or alkaline.
However, do not use detergents containing
abrasive compounds, industrial strongly acidic
or strongly alkaline detergents, or fluorine-based
detergents*1, because they may damage or
permeate the porcelain surface.
* TOTO’s Faucet Area Cleaner can be used.
*1 Including hydrogen fluoride and ammonium fluoride
Routine Maintenance
Maintenance keeps the toilet clean and extends its service life.
Please perform thorough and routine maintenance. Note that although
CeFiONtect parts have dirt prevention properties, routine maintenance is
still important to keep their surfaces clean.
About the cleaning tools
Do not use tools such as wire brushes, abrasive
nylon scrubbing pads or sandpaper, because
they will damage the surface.
Do not use any water repellant, stain-proofing
detergent or surface coating agent.
These products do not damage the porcelain
surface, but their components may cover the
porcelain surface and reduce the effect of the
built-in stain prevention technology.
About surface coating agents
About the cleaning detergent
CeFiONtect is TOTO independently developed
technology where bumps on the porcelain
surface are smoothed at the nano level of 1
million of 1 mm, making dirt difficult to adhere
and easy to remove.
About CeFiONtect