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1. SE Ve H sf vr E i SE I o ho ELL Ir i H H gt During distillation water is supplied and discharged in the order 1 pressure reducing valve 3 cooling water solenoid valve and condenser 13 When the distilled water tank is full or when ion exchanged water is sampled distillation is stopped and the cooling water is also stopped automatically Principle of Operation 3 Sampling of Distilled Water o M ak Cd The distilled water condensed in the condenser 13 is stored in the distilled water tank 21 after discharging the initial boiled water via the initial boiled water discharge solenoid valve 16 for about 10 mi
2. SS Boiler SS SS SSS KS TWN SE Heater terminal block d ch l HE Drain cock T Leakage detection electrode _ Water level meter Pre treatment cartridge Control panel Earth leakage breaker Drain port 2pcs each at right left Water level meter Multi purpose distilled water sampling port Distilled water Product number sticker sampling port lon exchange water sampling port Description and Function of Each Part Control Panel D PRE FILTER ION EXCHANGE RESIN o DISTILLED WATER POWER key Turns on off the power of the controller DISTILL lamp Lights up during distillation CONDUCTIVITY indicator Lights up when the conductivity of pure water keeps between 0 0 to yS cm LOW PRESSURE lamp Blinks when low pressure error is detected OVERHEAT lamp Blinks when overheat of the heater is detected DISTILLED WATER key Starts stops drawing distilled water PURE WATER key Starts stops drawing pure water LEAK lamp Blinks when water leakage is detected ION EXCHANGE RESIN Lights up when the conductivity of the ion exchange resin enters the caution exchange indication area orange and blinks when it enters the warning area red PRE FILTER Lights up when the conductivity of the pretreatment filter enters the caution exchange indication area orange
3. 700014450 J241 811 MV5 Distilled water sampling solenoid valve LT00014450 J241 811 MV6 E water sampling solenoid LT00014450 J241 811 P Distilled water sampling pump 2150080001 MD 10A IWAKI SSR Solid state relay 2160000035 TRS5225 Toho Denshi PIO Display board LT00013590 WG203 Yamato Scientific CONT PLANAR board LT00013589 WG203 Yamato Scientific Fs 2 Control float switch LT00014440 WA050514 1 Yamato Scientific 17 Service Manual for Water Purifier Auto Still WG203 Second Edition April 22 2008 Revision July 1 2015 Yamato Scientific Co Ltd 2 2 1 Nihonbashi Muromachi Chuo ku Tokyo 103 0022 Japan http Awww yamato net co jp 18
4. Distilled water sampling solenoid valve Cer Control float switch MV6 lon exchange water sampling solenoid valve FS2 Control float switch P Distilled water sampling pump FS3 Water level float switch SSR Solid state relay PS Pressure switch PIO Display board SW Reset switch CONT PLANAR board Piping System View DOG 1 Pressure reduction valve 15 Boiler water supply solenoid valve 2 Pressure switch 16 dE EE 3 Cooling water solenoid valve 17 lon exchange water sampling solenoid valve 4 Raw water supply solenoid valve 18 Distilled water sampling solenoid valve 5 Pre treatment cartridge 19 lon exchange water sampling port 6 lon exchange resin cartridge CPC S 20 Distilled water sampling port 7 Float cylinder 21 Distilled water
5. and blinks when it enters the warning area red ON lamp Lights up while the power of the controller is turned on Wiring Diagram CONT Red de ov12 white x PIO Attached cable CN21 R He CNI3 White il MV1 ELB i T Red EE T1 Black 5 CN14 white a 2 sS E ite 3 S 2 wm 2 Bag y li Se 4 Am a 3 White oni CNIS White ll Wi Green 4 3 7 Red 5 avis whie WN X H IW T 1 SR fa ita om SS wa 2 a1 3 on 1 d les IC Ce Red one 2 a Fs 1 1 E 5 fons Us 4 ona 2 Black Fs 2 5 i Red D len ou L Fs 3 3 os lema Ps 1 rown i SW ae LC Symbol Part name Symbol Part name ELB Earth leakage breaker A Main relay T1 T2 Terminal block MV1 Raw water solenoid valve H Heater MV2 Boiler water supply solenoid valve OH Temperature sensor MV3 Cooling water solenoid valve E lon exchange water quality gauge MV4 Sa accumulated water drain solenoid WL Water leakage detector MV5
6. SINCE 1889 Hamato Service Manual For Water Purifier Auto Still WG203 Second Edition Note Use and carry out the instruction manual together on the service of this unit Yamato Scientific Co LTD Contents MDECIICAUION EE 1 Description and Function of Each Patt cccceccescseeeeeneeeeeeeeeeeeeeeeeeeeaes 2 Main Unit EE 2 UE eleng eh E 3 WIRING DACA RE 4 PIDING KEE ORT 5 Principle of Operation eege 6 Failure Diagnosis Method l sssssunsnnnnnnnnnnnnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn 8 Failure indication and lts GOMIGINS EE 8 Remedy for EE 10 Parts Replacement Method ccccccccceeeeeeeeeeeeeeeeeeeeeeeeenenseeeeeeeeeseaeeaneaes 11 Replacement of Heaten e ccdeneccenuniieindenndiilene taceciadels need REENERT EN 11 Washing of EE Poco Ase See ae Oe aa Oe eae LG ah eae ee og eee aids 12 Parts Spe cificat ON ett Eege 16 C ramic Heater ER 16 Replacement Parts Table 2 cececeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaneeeeeeeeeeeeaes 17 Model WG203 Collecting method lon exchange Distillation Sampled pure water Distilled water lon exchange water 5 Quantity of distilled water Approx 1 8 h i Sampling flow rate 1 min or more ion exchanged water distilled water Boiler Super hard glass Distiller Condenser Super hard glass Heater Ceramic heater 1 4kw Distilled water storage tank Made of polyethylene 20 S EE P
7. er in working 1 Turn OFF the earth leakage breaker of this unit 2 Close the tap 3 Turn OFF earth leakage breaker and when more than 30 minutes has passed open the front door of this unit and open the boiler water drain cock 4 Open the left side plate of the body loosen the four screws on the right of the terminal block and disconnect the heater lead terminal Pull the heater lead out of the grommet Remove the cap nut of heater and pull out the heater Remove the packing and cap nut from the damaged heater Install the packing and cap nut on the new heater At that time do not touch with bare hand in order to prevent soiling by hand OND Oo 9 Install on the boiler so that YK W 3 mark of the heater is faced up 10 Feed the heater lead wire through the grommet check the heater lead wire attaching position and secure to the terminal block 11 Mount the left side plate 12 Close the boiler water drain cock 13 Close the front door and then open the tap 14 Turn on the earth leakage breaker 15 Press POWER key while holding down PURE WATER key and DISTILLED WATER key Perform calibration operation all of ON DISTILL PURE WATER and DISTILLED WATER lamps blink at the same time for about five minutes after then distillation ON and DISTILL lamps light up starts automatically Key operation becomes disable while calibration operation In case that power failure occurs while calibration operation
8. ews of boiler securing band with a Phillips screwdriver and take the boiler and condenser out of the body 3 Loosen the knurled screws three and remove the boiler and condenser Knurled Screw mc Connect ing S Hardware Connection Port with Condenser Washing of boiler 1 Adjust detergent liquid 1 Prepare approx 2 liters of hot water at 50 to 60 C 2 Add attached scale detergent Orgazor approx 200g to hot water prepared in 1 and agitate well 2 Seal the hose connection port at the bottom of boiler boiler supply and drain port by use of rubber stopper etc 3 Secure the boiler at a stable position to prevent washing liquid from spilling 4 Pour in washing liquid through connection port with condenser with heater turned on Most scale is removed in 4 to 5 hours approximately Drain washing liquid in the boiler If much scale is distiller deposited pour in washing liquid newly and repeat washing 1 When scale removing work is finished take the heater out of boiler and wash each of them enough with city water Here in washing the heater with water be sure to fill a larger beaker with water and wash the heater inside so that lead wire and its routing port are not wet by water Avoid washing the heater directly with water from tap 2 If solid scale distiller remains after washing by washing liquid follow the remedy below Boiler Scrub with brush etc for removing Heater Scrub with something soft such as wood piece or plastic In t
9. his connection remove scale on the heater uniformly in general never leaving solid scale in part In an extreme case only such part has a great heat resistance causing damage to the heater 13 Parts Replacement Method Washing of Distiller Washing of Condenser 1 Pour detergent liquid into the cooling pipe of condenser See Page 13 Washing of boiler for formulating detergent liquid Detergent Liquid Hose Connection Port 2 If detergent liquid should flow out of hose connection port seal with rubber stopper Most fur can be removed in 4 5 hours approximately 3 Drain detergent liquid and then wash enough with city water Handling of Detergent Liquid 1 Wash the boiler and heater sooner If the more scale is deposited the more difficult is its removal which may cause decrease of distilled water sampling and damage to heater 2 When washing is finished drain detergent liquid out of the unit and apply neutralization by neutralizer such as sodium hydroxide In neutralization check that it is neutral by use of pH test paper etc Principal component of scale detergent Sulfamic acid and pH of water solution Acidic approximately 1 3 In storing this detergent seal the agent and store in cold and dark place avoiding high temperature and humidity In handling this detergent be sure to use protective tools gloves mask and glasses When it is in contact with human body wash it away wi
10. iler water drain cock ca Boiler Water Drain Cock OS SEH Open Close 15 Parts Specification Ceramic Heater Model YK W 3 Specification Resistance of heater unit 4 84 2 10 at23 C At stabilized boiling condition Approx 1400W Resistance of sensor unit 400 Q 10 at23 C Resistance of sensor Q Resistance Q A n Ei A j CH 350 300 23 50 70 90 105 125 145 160 Temperature C Note The current of approximately 20A passes for a very short period just after the current is supplied when the heater is cold The current however soon decreases When the heater is removed for replacement make sure that the boiler has been drained and the heater has been sufficiently cooled down Do not touch the heating unit even after removed 16 Replacement Parts Table Code No Specification Manufacturer Fs 3 Water level float switch LT00014439 YF4 1888 Yamato Scientific P Pressure switch 2040040001 ST B BR1 N2 Sanyo Keiki S Reset switch 2010010014 A2A 4W OMRON E L i 3 S a ep W s X Main relay 2050000056 G7L 1A TUB 100V OMRON MV1 Raw water solenoid valve LT00014451 AG3X A300 100V MV2 Boiler water supply solenoid valve LT00014450 J241 811 MV3 Cooling water solenoid valve LT00014453 AB2X 1242 MV4 ae accumulated water drain solenoid
11. memorize the sign and turn the tap off immediately If an error occurs part change or unit check becomes required Please call the shop from which you made a purchase or our customer support center In that case please notify them of the error sign Safety device LOW Cause y LEAK PRESS BCE URE Lights up Turns off Turns off Burnout of heater Overheat of heater Water level error of boiler Coolant error Water level meter error Tank water level meter error Pure water conductivity meter error Turns off Lights up Lights up Lights up Turns off Lights up Turns off Lights up Lights up Turns off Lights up Lights up Lights up Lights up When temperature of the heater did not rise after certain time passed during distillation When the temperature at the heater excesses the error judgment value or when breakage or shortage occurs on the temperature sensor When the heater operation water level input kept OFF even if the time for required to evaluate the boiler water level error passed after starting water supply to the boiler When the state of the boiler water overflow input ON in the float pipe continued longer than coolant error judgment time When the condition of the float contacting points in the float pipe becomes abnormal When the condition of the float contacting points in the tank water level meter becomes abnormal When the state of breakage or sh
12. n after power switch is turned ON If the float switch 22 on top of the tank trips it is deemed as Full Tank and the distillation is stopped When any specified amount of distilled water is sampled and consumed distilled water is produced automatically The distilled water so stored is sampled by way of the distilled water sampling solenoid valve 18 and the distilled water sampling port 20 by the distilled water sampling pump 24 4 Sampling lon Exchanged Water st Leck Git gt lon exchange water is sampled by way of the pressure reducing valve 1 raw water supply solenoid valve 4 pre treatment cartridge 5 ion exchange resin cartridge 6 ion exchange water quality electrode 14 ion exchange water sampling solenoid valve 17 and ion exchange water sampling port 19 Failure indication and Its Contents When the following error signs appear
13. nput becomes parts For details error off off less than the water refer to page 10 leakage error judgment value Failure Diagnosis Method Remedy for Trouble Remedy when water leakage detection LEAK lights up 1 Turn OFF the earth leakage breaker on the right side of body 2 When restarting after the faulty portion is repaired wipe off water accumulated at the bottom of system dry up remove the water leakage detection electrode and dry up enough 3 Be sure to reset the electrode to the original condition Close the door 5 Turn on the earth leakage breaker and press the POWER key Normal operation is started because faulty portion is repaired E Water leakage detection electrode Remedy when water stopping detection LOW PRESSURE lights up 1 Check the pressure of the raw water and if the tap is open if water level reaches the device 2 If the pressure of the raw water resumes the system is reset automatically Remedy when overheat detection OVERHEAT lights up 1 Check if the cooling water flows 2 If the cooling water flows the heater may be overheated or disconnected 3 In such a case contact the distributor or the customer support center 10 Parts Replacement Method Replacement of Heater e If the heater should be disconnected or damaged due to deposit of scale replace it by the procedure below Also refer to Page 12 Washing of Distill
14. ortage of the thermistor sensor for pure water conductivity meter continues longer than error judgment time Symptom All controls of the heater and solenoid valve are turned OFF Countermeasure Change the heater Change the heater Check whether manual drain cock is opened or not Also check the feedwater solenoid valve and the feedwater path Check the coolant solenoid valve and the coolant path Change the float switch Turn the breaker on again If the trouble persists please call our customer service center Change water sensor the pure conductivity Failure Diagnosis Method Failure indication and Its Contents Safety device ee OVER Cause Symptom Countermeasure LEAK Sie HEAT When raw water pressure Check the water is low or the pressure of pressure of raw raw water is less than water and the tap Low pressure Turns Blinks Turns 0 5kgf cm When the raw water error off off pressure is recovered operation starts automatically auto recovery When the setting value Turn the breaker which is memorized in the All controls OFF memory chip cannot be of the heater read properly or when an and solenoid Controller error Blinks Blinks Blinks abnormal value was valve are displayed turned OFF When an error at A D circuit is detected When the resistance Turn the breaker off value of the water leakage and check the piping Water leakage Blinks Turns Turns sensor i
15. please perform calibration again 11 Parts Replacement Method Washing of Distiller Dismounting of Distiller 1 Turn OFF the earth leakage breaker of the unit 2 Close the tap 3 Check that the boiler is not hot longer than 30 minutes after the breaker is turned OFF then open the front door of the unit and open the boiler water drain cock 4 Disconnect the hose connected to the boiler and condenser In disconnecting from the distilled water outlet and boiler water supply and drain port turn the hose band by use of tool and displace the engaged portion serrated portion Take care in disconnecting because excessive force applied to glass may cause damage wn Cooling Wat Cooling Water gt SS Outlet Distilled Water Out let Boiler Water Supply and Drain Port 5 Disconnect the hole plug at left plate remove four screws with a screw driver then remove the left plate lt i N Ss San ae 6 Loosen 4 screws on the right of terminal block located at the right top of the body frame with left side plate dismounted by use of Phillips screwdriver and disconnect the heater lead terminal 12 Parts Replacement Method Washing of Distiller 7 1 Disconnect the heater lead wire from grommet Note that do not bend or pull the heater lead wire more than necessary 2 Remove the two scr
16. re treatment cartridge PWF 1 Activated carbon Hollow yarn film 0 1 g Raw water side filter um lon exchange resin cartridge One touch connection cartridge type CPC S 24 x 2 8 Water guay gauge S GE EE of electric conductivity Water sending pump Magnet pump ere SSES One port on the right side of the unit Raw water pressure range 0 5 x 100 kPa to 5 x 100 kPa 0 5 to 5 kgf cm Ambient temp 5 C 35 C 5 Power supply 50 60 Hz 100V AC 15A amp External dimension 600 x 560 x 780 mm Width X Depth X Height Weight Approx 48 kg e Water quality failure arert e Detection of cooling water failure e Prevention of baking heater with no load e Detection of heater disconnection e Prevention of heater overheat e Detection of water leakage e Detection of water outage e Earth leakage breaker e Initial boiled water drain e Detection of water level gauge failure boiler and tank e Recovery after power failure e Detection of water quality gauge failure Attached mechanism e Water supply hose drain hose and connection assembly 1 respectively e Operation manual 1 Accessories e Hose clamp 1 e Scale washing agent 1kg 1 e Pre treatment cartridge 1 e lon exchange resin cartridge 1 The projection is not included for external dimensions Description and Function of Each Part Main Unit lon exchange resin cartridge Distilled water tank Reset switch i S
17. tank 8 Float switch 1 22 Float switch 3 9 Float switch 2 23 Air filter 10 Boiler drain cock 24 Distilled water sampling pump 11 Boiler 25 Distilled water tank drain port 12 Heater 26 Water level meter 13 Condenser 27 Multi purpose distilled water sampling port 14 lon exchange water quality gauge electrode Principle of Operation 1 Boiler Water Supply and Distilling Operation gt 4 Turn ON the earth leakage breaker and press the power switch Then the raw water supply solenoid valve 4 and the boiler water supply solenoid valve 15 open at the same time to supply water to the boiler 11 When the float switch 1 8 in the float cylinder 7 detects water level the heater 12 is energized to start distillation The water supply to the boiler is controlled by the raw water supply solenoid valve 4 and the boiler water supply solenoid valve 15 both opened closed by the float switch 2 9 2 Flow of Cooling Water
18. th clean water Do not use empty container for beverage Do not allow detergent to directly flow into agricultural irrigation canal or fields because it causes withering of rice crop NOOA Installation of boiler 1 Secure the boiler with the boiler securing band so that connection port of condenser is horizontal Check that the packing is contained in the cap nut and then install the heater into the boiler with letters YK W 3 faced up Connection Port with Condenser Packing SE Secur ing Ban 14 Parts Replacement Method Washing of Distiller 2 Attach 4 heater lead terminals to the terminal block x a a Heater Lead wire diameter thick GI Heater Lead Ta f Wire diameter thin 3 Install the left side plate on the body 4 Insert the hose to the boiler water supply and drain port and secure with the hose band Installation of condenser 1 Place packing in the connection port of boiler with condenser and secure with connecting hardware so that the boiler and condenser are placed in the same direction Inlet Out let cro Cen Boi ler Connect ing Hardware Condenser 1 CH N a View from above Se U of 2 Connect the hose respectively to the cooling water inlet outlet and distilled water outlet of condenser 3 Close the bo

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