Yamato Pure Line WE200 User manual

Pure Line®
Water Purifier
Model WE200
Instruction Manual
First Edition
●Thank you for choosing the WE200 Pure Line
water purifier by Yamato Scientific Co., Ltd.
●For proper equipment operation, please read this
instruction manual thoroughly before use. Always
keep equipment documentation safe and close at
hand for convenient future reference.
Warning: Read instruction manual warnings
and cautions carefully and
completely before proceeding.
Yamato Scientific Co., Ltd.
Printed on recycled paper

Table of Contents
1. SAFETY PRECAUTIONS ............................................................. 1
Explanation of Symbols ............................................................... 1
Symbol Glossary ..................................................................... 2
Warning and Cautions ................................................................ 3
2. PRE-OPERATION PROCEDURES ..................................................... 5
Installation........................................................................... 9
3. COMPONENT NAMES AND FUNCTIONS.............................................. 18
Main Unit........................................................................... 18
Internal Plumbing System ............................................................ 19
Control Panel ....................................................................... 23
4. OPERATION PROCEDURE .......................................................... 24
Prior Confirmation ................................................................... 24
Operation Procedure................................................................. 24
Ion Exchange Water Sampling Procedure............................................... 25
Water Quality Index.................................................................. 26
Reverse Osmosis (RO) Membrane Flush ............................................... 26
Water PurityAssessment Process ..................................................... 27
Water Quality Characteristics Data (reference) .......................................... 28
Water Sample Size Data Based On Water Temperature (reference) ........................ 29
5. OPTIONAL ITEMS & MODIFICATIONS ................................................ 30
Optional Components................................................................ 30
Optional Power Cable Accessories..................................................... 31
Optional Remote Sampling Terminal ................................................... 33
Optional RemoteAlert Terminal........................................................ 33
6. MAINTENANCE PROCEDURES...................................................... 34
Maintenance Guide.................................................................. 34
Ion Exchange Resin Cartridge Replacement ............................................ 35
Pre-process Cartridge Replacement ................................................... 35
Reverse Osmosis (RO) Membrane Replacement ........................................ 35
Wear Item Replacement Alert Reset ................................................... 36
Water Supply Hose Filter Maintenance ................................................. 38
ELB Function Check ................................................................. 38
7. EXTENDED STORAGE & DISPOSAL ................................................. 39
Disposal Considerations.............................................................. 40
8. TROUBLESHOOTING............................................................... 41
Error Codes ........................................................................ 41
Malfunctions........................................................................ 43
9. SERVICE & REPAIR ................................................................ 45
10. SPECIFICATIONS ................................................................. 46
11. WIRING DIAGRAM................................................................. 47
Wiring Diagram Glossary ............................................................. 48
12. WEAR ITEMS ..................................................................... 49
13. LIST OF HAZARDOUS SUBSTANCES ............................................... 50
14. SETUP CHECKLIST ............................................................... 51

1
1. SAFETY PRECAUTIONS
Explanation of Symbols
A Word Regarding Symbols
Various symbols are provided throughout this text and on equipment to ensure
safe operation. Failure to comprehend the operational hazards and risks
associated with these symbols may lead to adverse results as explained
below. Become thoroughly familiar with all symbols and their meanings by
carefully reading the following text regarding symbols before proceeding
Warning
Caution
Signifies a situation which may result in minor injury (Note 2)
and/or property damage (Note 3.)
(Note 1) Serious injury is defined as bodily wounds, electrocution, bone
breaks/fractures or poisoning, which may cause debilitation requiring
extended hospitalization and/or outpatient treatment.
(Note 2) Minor injury is defined as bodily wounds or electrocution, which will not
require extended hospitalization or outpatient treatment.
(Note 3) Property damage is defined as damage to facilities, equipment, buildings or
other property.
Symbol Meanings
Signifies warning or caution.
Specific explanation will follow symbol.
Signifiies restriction.
Specific restrictions will follow symbol.
Signifies an action or actions which operator must undertake.
Specific instructions will follow symbol.
Signifies a situation which may result in serious
injury or death (Note 1.)

2
1. SAFETY PRECAUTIONS
Symbol Glossary
WARNING
General Warning
Danger!: High
Voltage
Danger!:
Extremely Hot
Danger!: Moving
Parts
Danger!: Blast
Hazard
CAUTION
General Caution
Caution:
Shock Hazard!
Caution:
Burn Hazard!
Caution: Do Not
Heat Without
Water!
Caution: May
Leak Water!
Caution:
Water Only
Caution: Toxic
Chemicals
RESTRICTION
General
Restriction
No Open Flame
Do Not
Disassemble
Do Not Touch
ACTION
GeneralAction
Required
Connect Ground
Wire
Level Installation
DisconnectPower
Inspect
Regularly

3
1. SAFETY PRECAUTIONS
Warning and Cautions
Warning
NEVER operate equipment near combustible gases/fumes.
Do not install or operate WE200 unit near flammable or explosive gases/fumes. Unit is NOT
fire or blast resistant. Negligent use could cause a fire/explosion.
See “List of Hazardous Substances” (P.50).
ALWAYS ground equipment.
Always ground equipment properly to avoid electric shock.
Connect power cable securely to equipment.
Insert the power cable completely and securely into power socket located on the rear panel
of main unit.A loose power cable connection may cause overheating or fire.
DO NOT operate equipment when abnormalities are detected.
If smoke or unusual odors begin emitting from unit, or if any other abnormalities are
detected, terminate operation immediately, turn off main power switch (Earth Leakage
Breaker - “ELB”) and disconnect power cable. Continued operation under such conditions
may result in fire or electric shock.
DO NOT operate equipment with bundled or tangled power cable.
Operating unit with the power cable bundled or otherwise tangled, may cause power cable
to overheat and/or catch fire.
DO NOT damage power cable.
Damaging the power cable by forcibly bending, pulling or twisting may cause fire or electric
shock to the operator.
NEVER disassemble or modify the equipment.
Attempting to dismantle or modify unit in any way, may cause malfunction, fire or electric
shock.
DO NOT place items on equipment.
Do not place any objects on unit. Doing so may cause unit to become unstable and tip over,
resulting in possible equipment damage or personal injury.
DO NOT step on or climb on top of equipment.
Do not attempt to climb onto unit or use as a substitute for a proper step ladder. Unit chassis
is not designed to support bodily weight and damage may result. In addition, unit may
become unstable and tip over or fall resulting in equipment damage, serious injury or death.

4
1. SAFETY PRECAUTIONS
Warning and Cautions
Warning
DO NOT adjust pressure reduction valve.
The pressure reduction valve has a default water sampling rate of approximately 0.8L/min
(base water pressure: 0.30MPa, pressure reduction valve: 0.20MPa, throttle valve:
0.60MPa, water temperature: 20°C without membrane filter), as set at factory before
shipping. Do not attempt to adjust it.
Altering any of the factory settings may cause unit to leak or have decreased flow rate.
DO NOT turn ELB OFF.
Water is routinely flushed through the system, even while water samples are not being
drawn. Be advised that if the ELB is turned “OFF”for an extended period of time, water
retained in the system cannot be flushed through, resulting in accelerated deterioration of
the reverse osmosis (RO) membrane degraded water purity.
DO NOT shut off water supply.
Water is routinely flushed through the system, to protect the RO membrane and maintain
water quality. The water supply tap should normally be left open to keep the flush function
enabled. Be advised that the flush function produces normal water discharge from system.
Prepare accordingly.
Caution
DO NOT operate equipment during thunderstorms.
In the event of a thunderstorm, terminate operation and turn off main power switch (ELB)
immediately. A direct lightning strike may cause damage to equipment, or result in fire or
electric shock.
Power loss.
Although unit naturally stops when a power failure occurs, turn main power switch (ELB)
“OFF” for safety. Follow procedures under “Turning power ON”(P.24) after power is
restored.

5
2. PRE-OPERATION PROCEDURES
Installation Precautions and Preparations
Warning
1. Ground wire MUST be connected properly.
・Ground wire must be connected to a proper grounding line or teminal in order to
prevent electric shock.
・Never connect ground wire to gas lines or water pipes.
・Never connect ground wire to telephone grounding lines or to lightning conductor rods.
Doing so may result in fire or electrical shock.
・Never insert multiple plugs into a single outlet. Doing so may result in power cable
overheating, fire or drop in voltage.
Connect to grounded outlet
Use grounded adaptor for ungrounded outlets
When no ground terminal is found:
●Grounding to Electrical Equipment
Technical Standards, Section 19, class D
(Grounding Resistance Max. 100Ω) is
required in Japan. Contact a local dealer,
electrician, or Yamato Sales office for
location-specific electrical requirements.
Ground adapter
●Insert grounded plug into ground adapter.
Connect grounding wire (green) from
ground adapter to a ground terminal.
2. Choose an appropriate installation site.
DO NOT install unit:
・where flammable or corrosive gases/fumes
will be generated.
・where ambient temperature will exceed
35ºC, will fall below 5ºC or will fluctuate.
・in excessively humid or dusty locations.
・where there is constant vibration.
・where power supply is erratic.
・in direct sunlight or outdoors.
・on uneven or unstable surfaces
・where base water pressure is higher than
0.50MPa or lower than 0.13MPa
・where water temperature is 10ºC or lower
・where temperature is 30ºC or higher
Install WE200 unit in a location with
sufficient space, as specified on the right.
Min.10cm
3
0
c
m
Near side
Min.10cm
Min.10cm
To 2-prong 100V power
supply
Grounded 3-prong
power plug
Ground wire
Grounded 3-prong power plug
ｗ
G
W
Grounding
prong

6
2. PRE-OPERATION PROCEDURES
Installation Precautions
3. Install in a location free of flammables and explosives.
●Never install near flammables or explosives. This unit is NOT fire or blast resistant.
Simply switching the main power switch (ELB) “ON” or “OFF” can produce a spark, which
can then be relayed during operation, causing a fire or explosion when near flammable
or explosive fluids, chemicals or gases/fumes.
●See “List of Hazardous Substances” (P.50) for more details on flammable and explosive
gases.
4. Install on a level surface.
●Install unit on level and even surface. Failure to do so may cause abnormal vibrations or
noise, resulting in possible complications and/or malfunction.
5. Connect power cable to proper outlet.
●Use an outlet which conforms to proper electrical capacity rating (15A or greater).
●If capacity is inadequate, sample sizes will be too small, or performance will be impaired
due to voltage drop. Connect to a power supply with stable power and proper rating.
Electrical capacity: WE200 rated voltage: Single phase AC100-240V
Rated frequency: 50/60Hz
Rated maximum current: 1.5A
●Using a cord reel extension cord may cause voltage to drop.
●Inserting multiple plugs into a single outlet (with adapter) may cause voltage drop or fire.
Explosive gases
Flammable gases

7
2. PRE-OPERATION PROCEDURES
Installation Precautions
6. Power cable connection.
●Insert the supplied power cord securely into socket on rear of main unit. Be sure that the
ELB on the right panel is “OFF (o)”before connecting power cable plug to facility outlet. Be
sure unit is grounded properly
●If a power cable other than the one supplied is to be used, be sure that it facilitates proper
grounding and that it conforms to power supply and to equipment power ratings.
7. Handle power cable with care.
●Never operate this unit with power cable bundled or tangled; and do not modifiy, bend,
forcibly twist or pull on power cable. Doing so may cause fire and/or electrical shock.
●Do not risk damage to power cable by positioning it under desks or chairs, or by pinching
it between objects. Doing so may cause fire and/or electrical shock.
●Do not place power cable near kerosene/electric heaters or other heat-generating
devices. Doing so may cause power cable insulation to overheat, melt and/or catch fire,
which may result in electric shock.
●Turn off main power switch (ELB) immediately and disconnect from facility terminal or
outlet, if power cable becomes partially severed or damaged in any way.
Failure to do so may result in fire or electric shock.
Contact a local dealer or Yamato sales office for information about replacing power cable
if it becomes damaged.
●Always connect power cable to appropriate facility outlet or terminal.
Power cord
Cable socket
ELB

8
2. PRE-OPERATION PROCEDURES
Installation Precautions
8. Base water.
●Use tap water as base.
●Never use chemicals or lubricants. Malfunction may result and water quality will be
compromised.
●Verify that base water does not contain rust or other contaminants. Contaminated base
water not only prevents specification-quality water but may also cause malfunction.
●Give particular care to base water quality.
9. Keep base water pressure within specified range.
●Keep working base water pressure within 0.13MPa~0.50MPa (1.3kgf/cm² ~ 4.9kgf/cm2),
including during evening and night time.
Base water pressures below 0.20MPa (2.0kgf/cm2), however, may result in water
samples of 0.5ℓ/min or less.
●Working base water pressure range does not change with optional “Water Supply Nozzle
Unit”(P.30).

9
2. PRE-OPERATION PROCEDURES
Installation
1. Connect water supply hose securely.
●Use the included water supply hose kit (connector, water supply hose). Place main unit
on a level and stable surface, near a water tap and sink.
●If hose is not connected securely, water supply hose or connector may slip off and cause
water to spray or otherwise leak.
●Do not over tighten the supply hose connector fitting, or it may be damaged.
2. Connect tap.
1. Slide the socket sleeve ③down in the direction of arrow. Connector fitting and water
supply hose can be disconnected.
2. Loosen the plug ②from the ring ①.
3. Tighten the 4 mounting screws ⑤equally, while inserting the tap nozzle firmly into the
nozzle ring ①, keeping the gasket ⑥even on the tip of the tap nozzle. If a chemical
tap is to be used, adjust the position of nozzle ring so that the mounting screws are in
one of the grooves on the tap nozzle, as shown, when tightened.
4. Turn plug ②clockwise to tighten securely. This will allow tap nozzle and connector
fitting to be sealed by the gasket ⑥.
* When the socket is removed, a valve inside of connector plug stops water flow.
Water Tap
Water Supply
Hose
Connector
Socket
Connector
Plug
Chemical Tap
Connector Components
①Nozzle Ring
②Plug
③Socket
④Spacer
⑤Mounting Screw
⑥Gasket
⑦Filter
One-touch
Joint
Tap Nozzle
Water
Supply
Hose
Sleeve

10
2. PRE-OPERATION PROCEDURES
Installation
3. Make water supply connection.
(1) Remove rubber cap from connector
plug ⑧.
(2) Insert connector plug ⑧securely
into connector socket ⑨with the
sleeve held down in direction of
arrow. Sleeve returns to the
original position when released, If
connection is secure.
※The connector socket contains a
valve, which opens only when
socket is inserted. When socket is
removed, water cannot enter.
4. Connect water supply hose only to tap equipped with sink, where possible.
If water supply hose is connected to a
water tap without sink facilities,
flooding may occur if water supply
hose is unintentionally disconnected or
damaged. Connecting to a water tap
having a sink is therefore preferable.
5. If no sink is available.
●Use optional Water Supply Port Unit (found on P.30) designed to provide a more secure
connection under fluctuating water pressure than the standard connector kit and hose.
6. If no tap is available.
●Use one of the appropriate optional Water Supply Port Coupler Joints on P.30.
Sleeve
⑧Plug
Valve
⑨Socket
Tap
Water supply
hose
Connector
Connection port Body
Sink

11
2. PRE-OPERATION PROCEDURES
Installation
7. Install the ion exchange resin cartridge.
●Turn power off and close water tap before installing or replacing the ion exchange resin
cartridge.
●Install procedure:
(1) Remove rubber cap from ion
exchange resin cartridge.
(2) Install ion exchange resin cartridge
securely into the resin drum
installation plate, inside the WE200
unit. (See Figure 1.)
(3) Push quick coupler from “IE OUT”
tube onto the cartridge “OUT”
coupler fitting, until it clicks. (See
Figure 2)
(4) Push quick coupler from “IE IN”tube
onto the cartridge “IN”coupler fitting,
until it clicks. (See Figure 2)
●Removal procedure:
(1) Remove quick coupler by pushing
the black part of the coupler casing
toward the cartridge while pulling the
coupler off. (See Figure 3)
(2) Remove the coupler from the IN side
first, followed by the OUT side.
Figure 1
Figure 2
Figure 3
※Quick couplers may be stiff with first few uses and cartridge coupler fittings may break off, if
too much force is applied. If installing the couplers is too difficult with ion exchange cartridge
installed, remove it from the main unit and connect the hoses, first. Be sure not to kink the
plastic tubes while using this method.
※Once hoses are connected, give each coupler a gentle tug to verify that they are securely in
place.
※When removing quick couplers, water may drip from the ion exchange resin cartridge fitting.
Be careful not to let water get on the leak sensor.
※Be sure not to cross the hoses (e.g. connect IN hose to OUT tip and vice versa) when
replacing the ion exchange cartridge. Malfunction may result.
Slide

12
2. PRE-OPERATION PROCEDURES
Installation
8. Install the pre-process cartridge.
●Turn power off and close water tap before installing or replacing the pre-process
cartridge.
●Install procedure:
(1) Remove rubber cap from the process
cartridge.
(2) Place pre-process cartridge into
designated bracket, inside the
WE200 unit. (See Figure 4)
(3) Connect the pre-process coupler,
“PWF OUT”to the “OUT”fitting on
the pre-process cartridge, while
sliding the light blue coupler tip back.
(See Figure 5 & 6)
(4) Connect the pre-process coupler,
“PWF OUT”to the “OUT”fitting on
the pre-process cartridge, while
sliding the light blue coupler tip back.
(See Figure 5 & 6)
●Removal procedure:
(1) Remove the pre-process coupler
simply by holding it by the light blue
tip and pulling upward. (See Figure
6.)
(2) Remove from the “IN”side first,
followed by the “OUT”side.
Figure 4
Figure 5 Figure 6
※Once pre-process hoses are installed, give each coupler a gentle tug to verify that they are
securely in place..
※When removing pre-process couplers, water may drip from the pre-process cartridge fittings.
Be careful not to let water get on the leak sensor.
Slide
Coupler tip (blue)
Pre-process cartridge
bracket

13
2. PRE-OPERATION PROCEDURES
Installation
9. Install the membrane filter.
Install the membrane filter as follows:
Unless watertight connection is made, threaded portion may leak fluid which could mix
with and contaminate pure water samples. Always ensure a secure, watertight
connection.
（1）From the included items, take out two membrane filters and the roll of Teflon thread
seal tape.
（2）Observe the direction of the arrow on the membrane filter. Apply thread seal tape
by winding it clockwise around the threads, as shown, for two to three turns, while
pulling on tape to stretch it slightly. Begin wrapping at third thread from the tip, so that
first two threads remain exposed. Cut remaining tape away.
（3）Screw the membrane filter into receptacle on front of unit, so that the side with the
thread seal tape is up. Exercise care not to crush threads. Draw a pure water sample
and check for leaks from membrane filter. If any leaking is found, screw membrane
filter in further. The reference number of turns to tighten is two and a half to three.
※Store the remaining thread seal tape in a safe and convenient location. It is used for every
membrane filter change.
Membrane filter
Detail
Leave first two
threads exposed
Thread seal tape

14
2. PRE-OPERATION PROCEDURES
Installation
10. Connect drain hose.
●Follow the procedures below to connect drain hose.
●Be sure to connect the drain hose securely, or water may leak from connection joint.
(1) While holding the quick coupler by hand, push the drain hose completely and evenly
into the drain port on the rear of unit.
※To remove the drain hose, pull out while pushing in the quick coupler ring.
※Be sure to put drain hose into sink, once it is removed.
11. Exercise care in routing drain hose.
●If drain hose is bent, kinked or otherwise obstructed, drainage cannot be expended
properly. Drainage back-up or damage to the cooling hose may result.
●Place the end of the drain hose so that it is lower than the drain port on unit, and avoid
drain systems which allow fluid to remain in pipe or to puddle near the outlet, causing
drainage resistance or obstructions.
12. Confirm stability.
Unit may tip over or fall in the event of an earthquake or other similar incident, resulting in
injury or death. As an added safety precaution, be sure to implement measures to properly
stabilize unit.
Drain hose
Quick coupler
To remove:
Push in
Ring

15
2. PRE-OPERATION PROCEDURES
Installation
13. Install the reverse osmosis (RO) membrane.
●Turn power off and close water tap before installing or replacing the reverse osmosis
(RO) membrane.
●WE200 unit is shipped with an RO membrane installed. Review the following when
replacing.
●Install procedure:
(1) Place RO membrane into designated
brackets as shown in Figure 7.
(2) Push tube marked, “RO IN”evenly
into the upper coupler on RO
membrane.
(3) Push tube marked, “RO Left”evenly
into lower left coupler on RO
membrane.
(4) Push tube marked, “RO Right”evenly
into lower right coupler on RO
membrane.
●Removal procedure:
(1) Tubes are easily removed from
couplers, simply by pushing the
coupler collet in and pulling tube out.
(See Figure 9.)
※Tubes are more easily removed by
pushing entire collet in, rather than
only a portion of it.
Figure 7
Figure 08
Figure 09
※Once all three tubes have been connected, give each a gentle tug to verify that they are
connected securely.
※When removing tubes, water may drip from RO membrane couplers. Be careful not to let water
get on the leak sensor.
Collet
Pull
RO IN
Upper coupler
Lower right
coupler
Lower left coupler
RO
Right
RO
Left
Brackets

16
2. PRE-OPERATION PROCEDURES
Installation
14. Run initial wash for reverse osmosis membrane (after unit delivery and after
each time membrane is replaced)
①Remove the four retaining screws from
the right cover of main unit and remove
cover. Turn the initial wash selector
switch to “ON”.
②Turn ELB “ON”(｜), then press and hold
PUSH.
●appears in water quality
display.
●flashes in information
display.
③Press and hold PUSH again and initial
wash begins. ※Remaining water
volume (in ℓ) used for initial wash will
appear and be counted down.
●appears in water quality
display
●flashes in information
display
④A buzzer sounds when initial wash has
finished.
●appears in water quality
display
●flashes in information display
⑤Be sure to turn the initial wash selector
to “OFF”.
※Normal operation cannot be performed
with the initial wash selector switch “ON”.
⑥Press POWER to complete the process.
Replace the cover.
※Press and hold CLR to stop initial wash while in progress. In this case, mode will skip to ⑥.
※If a power loss occurs during initial wash, mode shifts to ②when power is restored. Start
initial wash again, from the beginning.
②
③
⑥
Initial wash selector switch
①

17
2．PRE-OPERATION PROCEDURES
Installation
15. Calibrate pressure for reverse osmosis membrane.
●Calibrate pressure for the RO membrane ONLY while taking a water sample.
●This process must be conducted when WE200 is first installed and each time RO
membrane is replaced.
●Pressure calibration procedure:
(1) Remove the right cover of main unit and
confirm the location of pressure
calibration valve and pressure gauge.
(See Figure 10.)
(2) Turn ELB “ON”(｜) and begin water
sampling process. (See P.25)
(3) Press and hold UNIT while drawing
water sample to display the current
water temperature. (See Figure 11.)
(4) Using the temperature shown in the
information display, refer to Table 1 for a
corresponding pressure. Calibrate to the
appropriate pressure by turning the
pressure adjustment valve.
Example:
If information display shows “20”(20°C),
corresponding pressure is 0.60MPa.
(5) When calibration is completed, close
the right cover on main unit.
Figure 10
Figure 11
Table 1
Water
temperature
(°C)
Pressure
(MPa)
Water
temperature
(°C)
Pressure
(MPa)
10
0.69
21
0.59
11
0.68
22
0.58
12
0.67
23
0.57
13
0.66
24
0.56
14
0.65
25
0.55
15
0.64
26
0.54
16
0.63
27
0.53
17
0.63
28
0.52
18
0.62
29
0.51
19
0.61
30
0.50
20
0.60
※If pressure is not calibrated according to the procedure above, specified sample size cannot be
dispensed. If incorrect sample size is suspected after calibrating pressure, call for service.
※Replacing the reverse osmosis membrane, hosepipes and the pressurization pump at the
same time, every two years, is recommended. Contact nearest sales office or dealer for
assistance.
Cover
Pressure
gauge
Pressure
calibration
valve

18
3. COMPONENT NAMES AND FUNCTIONS
Main Unit
Front Rear
Control panel
Caution/Rating sticker
Serial number sticker
Water
supply port
Drain port
Power cable
socket
Leak sensor
Membrane filter
ELB
Ion exchange resin
cartridge：CPC-T
Product code：253256
Pre-process cartridge
Product code：253099
reverse osmosis (RO)
membrane：RO-1S
Product code：253257
Optional terminal block
location
Leak sensor
Pressure
calibration
valve
Initial wash
selector switch
Pressure
gauge