Yamato WA500 User manual

Instruction manual
Water Purifier, Auto Still
WA500/WA570
WA710/WA730
First Edition
Y Yamato Scientific America Inc．
Santa Clara，CA
This paper has been printed on recycled paper.
●Thank you very much for buying Yamato Scientific
AUTO STILL®series WA500/570/710/730 model.
●For proper use of this unit, pleas read the
instruction manual and warranty thoroughly before
operation. Keep both for any future references.
Warning : Read and apprehend the important
warning signs in this instruction prior to use.

Contents
Explanation of Graphic Indication..........................................................1
Emergent Troubleshooting .....................................................................2
Warning.......................................................................................................................3
Caution........................................................................................................................3
Safety Precaution.....................................................................................4
Installation and Preparation for Use.............................................................................4
Caution for Use......................................................................................16
Identification of Parts ............................................................................17
Body (WA710)...........................................................................................................17
Piping Diagram (WA710/730) ....................................................................................18
Piping Diagram (WA500/570) ....................................................................................19
Operation System......................................................................................................20
Operation panel.........................................................................................................22
Run Menu ...............................................................................................26
Preparation and Check before Use............................................................................26
Run menu..................................................................................................................27
Repeated Collection of Pure Water............................................................................28
Collection of The Fixed Volume of Ion Exchanged Water...........................................29
Collection of The Fixed Volume of Distilled Water......................................................30
Indication of Water Quality.........................................................................................31
Display of Total Flow/Resetting..................................................................................33
Safety Devices and Error Codes...........................................................34
Displays and Details of Error Code............................................................................34
Trouble Displays other than Error Codes/Details .......................................................35
Troubleshooting.........................................................................................................36
Maintenance...........................................................................................37
Check and maintenance............................................................................................37
Exchange of Pre-Treatment Cartridge .......................................................................37
Exchange of membrane filter.....................................................................................37
Exchange of Ion Exchange Resin Cartridge ..............................................................37
Cleaning Still..............................................................................................................38
Clean Water Supply Hose Filter.................................................................................40
Exchange Hoses .......................................................................................................40
When you do not use the unit for a long time.............................................................41
After-sales Service and Warranty .........................................................42
Specifications.........................................................................................43
Wiring Diagram ......................................................................................44
WA500.......................................................................................................................44
WA570.......................................................................................................................45
WA710.......................................................................................................................46
WA730.......................................................................................................................47

-1-
Explanation of Graphic Indication
Graphic Indication
This instruction manual and our products apply various graphic indications for safety use. Ignoring thise
indicators or improper handling of the unit can cause such situation as indicated below. Please read and
apprehend the following contents.
Warning
Warning indicates possibility of serious injuries (1) or death.
Caution
Caution indicates possibility of injuries (2) on person or damages on property (3).
(1) Serious injuries mean any injuries, electric shocks, bone fractures and poisoning causing
after effects or requiring hospitalization or long outpatient treatment.
(2) Injuries mean any injuries and electric shocks not requiring hospitalization or long outpatient
treatment.
(3) Damages on property mean any damages on facilities, machinery, buildings, etc.
Meaning of graphic indications
It shows conducts to be surely done.
It shows warnings or cautions.
It shows prohibited conducts.

-2-
Emergent Troubleshooting
Identification of “TROUBLE”and error codes / Identification of causes
This unit has self-diagnosis function. If any operational abnormalities or machine troubles should occur,
the operation panel blinks “TROUBLE”and shows the error code.
If this occurs, check the error code, and immediately disconnect the breaker and turn the tap off.
The TROUBLE lamp also blinks.
The TROUBLE lamp also blinks.
The TROUBLE lamp also blinks.
Water leakage
Heater overheating
Defect of the float switch for the
distilled water tank.
The TROUBLE lamp also blinks.
The TROUBLE lamp also blinks.
The TROUBLE lamp also blinks.
Abnormal boiler water level
Defect of the float switch to
control the boiler water level.
Defect in the electric circuit
If any error codes should come up, note the error code and turn the power and the faucet off immediately.
Any such troubles require parts exchange or check on the device. Contact the seller or Yamato Scientific’s
Technical Service Department and tell the error code.

-3-
Emergent Troubleshooting
Warning
Do not use this unit in flammable or explosive gas environments.
This unit is not explosive proof. Never use this unit in flammable or explosive environments to
prevent fire or explosion.
Never fail to ground the unit.
Be sure to ground the unit correctly, or electric leak could cause shock or fire.
Do not use this unit if malfunction occurs.
If smoke or any strange odor should disburse from the unit, switch off power to prevent fire or
electric shock.
Do not bundle the power cable during use.
Overheat or fire can occur if the power code is bundled in use of the unit.
Do not damage the power code.
Forcibly bending, pulling or wrenching damages the power code, and can cause a fire or electric
shock.
Do not disassemble or remodel this unit.
Disassembling this unit can cause a fire, electric shock or other crisis. Never disassemble or
remodel this unit.
Do not touch hot area.
Pay attention not to get scalded. Some areas of the boiler are hot during or after operation. Make
sure if the boiler is cool enough before you start maintenance of the heater or other devices.
Caution
If it begins to thunder.
If it begins to thunder, switch the power off. Neglecting this can result in fire or electric shock.

-4-
Safety Precaution
Installation and Preparation for Use
Warning
Do not Use this unit in flammable or explosive gas environments.
This unit is not explosion proof. Never use this unit in flammable or explosive gas environments.
Electric arc occurs when you switch the unit “ON”and “OFF”, and can cause a fire or explosion.
Select carefully the space to install the unit.
Do not install this unit in any of the following environments.
●In inflammable or corrosive gas environments
●In temperature beyond 35℃
●In severe change in temperature
●In very humid locations
●Under direct sun
●In frequently vibrating areas
Provide ample space surrounding the unit as indicated below.
20cm or more
60cm or more
20cm or more
Front

-5-
Safety Precaution
Installation and Preparation for Use
Warning
Do not remodel this unit.
●Never disjoint this unit to avoid electric shock.
●There are some high-pressure areas inside the unit. Ask your seller or Yamato Scientific’s
Technical Service Department for internal adjustment or repair.
●You must follow this instruction manual for your daily check or maintenance. Never remodel
the unit by yourself to prevent any troubles.
Install this unit on level areas.
If you do not, unexpected trouble can occur.
Remodel

-6-
Safety Precaution
Warning
Ground the unit.
●If you do not ground the unit, the earth leakage circuit breaker would not work in case of
electric leakage. Be sure to connect the ground lead to prevent electric shock.
●WA500 type needs 115V. Connect the ground lead securely to the switchboard.
●WA570 or 710 type needs 220V power source with a single-phase. Connect the ground lead
securely to the switchboard/220V single-phase outlet.
●WA730 type needs 220V with triple-phases. Connect the ground lead securely to the
switchboard/220V triple-phase outlet.
●Ground the ground lead to the ground wire or terminal of the power source. The green core of
the power cable is the ground lead. Contact an electrician if you have no equipment for
grounding.
●Never connect with gas or water pipe.
Use exclusively the switchboard and outlet.
Use a switchboard and outlet with adequate capacity. If you connect to those without enough
capacity, you would not take enough distilled water or control properly the unit due to decrease of
voltage from the power source. Connect the power code to the sufficient power source.
Necessary capacity :
WA500
AC115V
single-phase
33.5A
WA570
AC220V
single-phase
18A
WA710
AC220V
single-phase
35.5A
WA730
AC220V
triple-phase
21A
Precaution for connecting the power cable.
●Ask your seller or an electrician to connect the power cable for this unit. This connection
requires special knowledge and skill. Connection by unskilled person can cause a fire or
electric shock.
●No power plug is attached to this unit. Select an adequate capacity plug and terminal according
to the power source to connects. Be sure that the breaker for the power source is turned off
prior to connecting the power cable. Carefully connect each color core at connecting the power
cable.
In case of single-phase
Incase of triple-phase
Core color
Indoor wiring
Core color
Indoor wiring
Black
Voltage
Red
R phase
White
Ground
White
S phase
Green
Earth
Black
T phase
Green
Earth

-7-
Safety Precaution
Installation and Preparation for Use
Warning
Precaution for proper use of the power cable
●Do not bundle the power code during operation, or overheat or fire can occur.
●Do not process, or bend, wrench or pull forcibly the cable. Such conduct can cause a fire or
electric shock.
●Do not damage the cable, by placing a desk or chair on it or placing it between objects. Such
conducts can result in fire or electric shock.
●Do not place the cable near any stoves or heaters, or the cable coating can melt causing a fire
or electric shock.
●If the power cable is damaged (core exposure or disconnection), turn immediately the circuit
breaker and the power supply off, and request the seller to change the power cable. Neglecting
this procedure can cause a fire or electric shock.
●Connect the cable to an adequate switchboard.
●Check the capacity of the switchboard prior to connecting the cable. WA500 and 570/710
needsAC100V and 200Vrespectively. WA730 needsAC200V power source with triple-phase.

-8-
Safety Precautions
Installation and Preparation for Use
Warning
Connect securely the water supply hose.
●If you do not connect the joint securely, the water-supply hose or connector would come off,
causing water leak or spouting.
●Use the connector and water-supply hose out of accessories for this unit. Install the unit on the
level and stable place near a tap and drainage.
Connect securely the water-supply hose in the following procedure.
Connect to tap.
(1) Slide the joint sleeve of the socket ③to the direction the arrow shows. Then you can
separate the connector and the hose.
(2) Loosen the plug ②from the ring ①.
(3) Fasten 4 screws ⑤in the same way while pushing the ring ①lightly and evenly so that the
packing ⑥touches evenly the tap.
(4) Turn right and fasten securely the plug ②. Then the packing ⑥seals the tap and connector.
(5) Slide the sleeve to the direction the allow shows and insert the socket ③securely into the
plug ②. Make sure the sleeve goes back to the original position when you loose your hold.
Then you can finish the connection.
Tap
Connection
Connector
socket
Water-Supply
Hose
Sleeve to the water intake
Water intake
①Ring
②Plug
③Socket
Sleeve
Water-supply hose
Tap
④Soacer
⑤Screw
⑥Packing
⑦Filter
One-touch joint

-9-
Safety Precautions
Installation and Preparation for Use
Warning
Connection to the unit
(1) Remove the rubber cap from the plug ⑧.
(2) Slide the sleeve to the direction the arrow
shows, and insert securely the socket ⑨
into the plug ⑧.
Make sure the sleeve returns to the original
position when you loose your hold. Then,
you can finish the connection.
The socket has a built-in valve which would
not open for water run until the plug is
connected.
Connect the water-supply hose to a tap with drainage system.
●Connect the hose to a tap with drainage
system. If you connect the water-supply hose
to a tap without drainage system, damage on
the hose could result in overflow of water.
Sleeve
⑧
⑨
Tap
Connector
socket
Drainage
Water-supply hose
Connector

-10-
Safety Precautions
Installation and Preparation for Use
Caution
If drainage facility is away from the tap, use the Water Supply Unit, a
non-standard accessory.
●The “Water Supply Unit”includes all items
from the sleeve to the nipple. Refer to the
instruction manual for the “Water Supply
Unit”about connection to the faucet and for
more information.
●The “Water Supply Unit”has the structure to
keep tight connection to the pipe compared
to a normal hose set even when the water
pressure changes.
Nipple
Valve strainer
City water tube
Elbow
Water supply hose
Sleeve
Keep the following pressure of water service.
●Keep water pressure within 1 to 5×100kPa (1 to 5kgf/cm2) even for use at night.
●Keep the same water pressure even when you use the non-standard accessory “Water Supply
Unit”.

-11-
Safety Precautions
Installation and Preparation for Use
Warning
Connect securely the drainage hose.
●Connect securely the drainage hose. If the hose comes off due to incomplete connection, water
would leak inside the unit and might cause machine trouble.
(1) Take the drainage hose ①and the hose band ②out of accessories for the unit.
(2) Make sure the circuit bleaker is off.
(3) Open the left door ③.
(4) Take out the rubber stopper from the drain ⑤.
(5) Select the most convenient inlet out of three in the back to arrange the hose without
bending. Pass the hose band over the hose. Then, insert the hose into the drain ⑤and
fasten the hose band.
You must take off the back board to arrange the hose to the drain through the back side of the
unit when you insert the hose from the inlet✭1.
Be careful to arrange the drainage hose.
●Do not bend the hose nor make any convex part.
●Arrange the hose lower than the drain of the unit.
●Lead the end of the drain hose to drainage capable of about 2L/min. (In case of WA500/570) or
3L/min. (in case of WA710/730) of cooling water drained.
Drainage with larger capacity is required when boiler water is drained.
①
②
⑤
Left door
Back board
④
③

-12-
Safety Precautions
Installation and Preparation for Use
Warning
Check the temperature of drained cooling water.
●The drained water sometimes exceeds 60℃especially in summer. Do not touch the water
carelessly, or you can get scalded. Drain the water away from your work areas.
●Drain hot water away from chloroethylene pipe, if used, in the drainage facility, or the drained
the unit, to the chloroethylene pipe in case the pipe temperature does not get lower than 60℃.
Use the drain trap of the non-standard accessory even under 60℃when you do not use the
above-said pipe and joint.
If the drain pipe of the drainage facility does not get lower then 60 ℃
●Connect the drain trap, a non-standard accessory for the unit.
●The trap keeps the drained water for a while to cool the water naturally. In addition, tap water
flows into the trap for cooling.
Faucet
AUTO STILL
Water drained
Drain trap
Drain hose of the unit

-13-
Safety Precautions
Installation and Preparation for Use
Warning
Connect securely the pre-treatment cartridge.
●Connect securely the inside hose as follows.
●If you do not connect securely, the connected hose would come off, causing water leak.
(1) Make sure the earth leakage circuit bleaker or the unit is switched off, and the tap is being
fastened.
(2) Use the pre-treatment cartridge ①out of accessories for the unit.
(3) Take off the caps on the IN and OUT of the cartridge ①.
(4) Open the unit front door. Then you can find one connecting hose with the IN coupler ②
and other with the OUT. Connect the respective hoses to IN and OUT of the cartridge ①.
(5) To connect each hose, slide the blue part ③of the coupler back to the hose side, and fit
the end of the coupler to the respective end of the cartridge. Then release the blue part ③.
(6) After you finish the connection, set the pre-treatment cartridge at the left side before the
distilled water tank, as the picture shows. Be careful not to bend the hose.
Left door
Coupler
②
③
①Pre-treatment cartridge
Unit with the front door opened

-14-
Safety Precautions
Installation and Preparation for Use
Warning
Connect securely the membrane filter.
●Fit the membrane filter as follows.
●If you do not connect firmly, water could leak from the junction, which could pollute collected
pure water.
(1) Take two membrane filters and the sealing tape out of accessories for the unit.
(2) Open the direction of the water intake ④.
(3) Check the direction of the membrane according to the arrow. Then pull and wind the
sealing tape ⑤clockwise 2 or 3 times on the membrane filter. Cut the remaining tape
(4) Gibe three turns and screw the membrane into the filter ⑥joint with the sealed part of the
membrane set upward. Be careful not to destroy the screw thread. Check water leak while
taking pure water. If any, screw the membrane again.
④Cover on water intake
⑤Sealing tape
⑥Filter joint

-15-
Safety Precautions
Installation and Preparation for Use
Warning
A high-purity cartridge of a non-standard accessory is apparently same as an
ion-exchange resin cartridge. Fit in the same procedure.
●Fit the ion-exchange resin cartridge in the following procedure.
●Fit the cartridge securely. If you do not connect it firmly, water could leak.
(1) Take the ion-exchange cartridge out of accessories for the unit.
(2) Open the front door.
(3) Set the ion-exchange resin cartridge on the holder of the unit.
(4) There are IN and OUT hoses. Connect these hoses to the respective IN and OUT of the
cartridge.
Holder
Ion-exchange resin cartridge
One-touch coupler

-16-
Caution for Use
Warning
No use at occurrence of abnormality/troubleshooting
If smoke or any strange odor should disburse from this unit for any reasons, turn off immediately
both unit and power source breakers, and request the seller or Yamato Scientific to check the unit.
Neglecting this procedure can result in fire or electric shock. Never try repairing the unit yourself. It
is too dangerous.
If it begins thundering.
If it begins thundering, turn the circuit breaker off immediately.
Neglecting this procedure can result in circuit disorder, fire or electric shock due to thunderbolts.
When you dispose of the unit.
Do not leave the unit in child playground etc.
Be careful to use the cleanser.
●Keep the cleanser in an airtight container, and avoid preservation in hot and humid areas.
●The main ingredient of the cleanser “Organosol 10”is sulfamic acid (PH1 acid solution).
●Wear protective gloves, mask and glasses to handle the cleanser.
●Wash by pure water the cleanser splashing on body.
●Neutralize cleanser after use with sodium hydroxide after use.
●Check by a PH indicator if cleanser is neutralized irrigation channel or fields.
●Do not use the vacant cleanser container as a drink bottle.
●Do not drain the cleanser container as a drink bottle.
●Do not drain the cleanser into an agricultural irrigation channel or fields. The cleanser can kill
rice plants and other form products.

-17-
Identification of Parts
Body (WA710)
This drawing identifies parts.
There are some different parts used for WA500/570/730