Sanyo MLS-3751 User Manual Download

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Summary of Contents for MLS-3751

Page 1: ...ng Work 1 2 Specifications 2 3 Outside Dimensions 3 4 4 Names of Parts and Operations 5 6 5 Construction and Functions 7 10 6 Piping Diagram and Wiring Diagram 11 12 7 Process Flow and Operations 13 21 8 About Various Modes 22 27 9 Temperature and Pressure Adjustment and Checking 28 32 10 Thermistor Temperature Characteristics Altitude Atmospheric Pressure and Boiling Point in Standard Atmosphere ...

Page 2: ... Always return the wiring to its original condition after carrying Do not splice the power cord plug it into an extension out inspection or repairs on the unit cord or use it with multiple plugs in a single outlet Tighten the lead holden so that the lead wires do not 6 Failure to observe the above could result in electric touch revolving parts high temperature parts shocks heating fue high pressur...

Page 3: ...C Safety Valve Releasing Pressure 240kPa 34 Bpsi 2 4bar Pressure Gauge Range 0 1 0 4 MPa Sterilization 1 min 5 hrs Melting 1 min 5 hrs Timer Heat retent 72 hrs fixed Timer 1 week Designation Year month day hour and minute Exhaust Tank 2 liter Polyethylene tank Warning and Safety Functions Pressure safety valve overheat prevention device dry scorch prevention cover interlock excessive pressure prev...

Page 4: ... 75 t l J c D r 100 II W 100 r I a 1 l 1159 420 678 Lateral Side I 1 1 1 1 632 I 1 1 I I 1 o I ill c 1 1c J1 II g 426 71 66 607 673 689 766 9 eN j 0 1 r o c en c CD g 3 CD J C I c J C I 3 3 o c en 0 CD o 3 CD J en o J en ...

Page 5: ...I Front Side I 75 D Lateral Side I 4 1 1 632 I I I II 1 1 1c J1 r J 9 426 171 66 607 673 689 766 o n w j 00 r o c if c CD g 3 CD I CJl c I CJl ...

Page 6: ...ening closing the cover II G p P UNa ua Indicates the pressure inside the chamber mn I L r J oH c r lch Exhaust tank If f Co nd e n e tea m e m H ed J l J J v R thO r to nnee th from the chamber _ V optional printer to the product JI C Tankcua Encases the exhaust tank Exhau thOH Sends steam and air in the chamber to the exhaust tank J C Rtfr 4 Ii C tar Exhu t valve Manually opening cloeing valve u...

Page 7: ...Ure date hourimllUlM and voice guide LIghts up wh8l l the chamber MIttIng Intemally undlr prusure Thlllllmp Ilghtl up whln thll button pl UMd I IBBI fo v BAtI tD IBBB lo Timer I s_ thallma untiliha liar of bUtton Model No r operation Indates changa 01 MIllIngs and MIllIngs 01 CUlTlll lt op8l llllDn on Stop I II1II digital dilplays lnd II Stope operdon and cancelli lJMd Ibr IlItIIng and dlRnglng th...

Page 8: ... frame constituting the appearance of the temperature detector 4 Richt side Danel Constitutina the richt side appearance of the unit cover 5 Side panel R Right side frame constituting the appearance of the unit 6 Left side panel Constitutin the left side appearance of the unit cover 7 Side panel L Left side frame constituting the appearance of the unit 8 Safety valve cover Plate to block steam blO...

Page 9: ...lina the chamber 13 Chamber set Chamber to seal UD steam and Derform sterilization 14 Chassis Base plate to fIX the arrangement component parts and support them 15 Caster Caster for moving the unit 4 casters are used Equipped with lock function 16 Pressure sensor Semiconductor sensor for detecting the pressure in the chamber 17 Thermistor assembly Sensor for temperature detection 8 ...

Page 10: ...18 19 II 9 20 21 22 23 24 25 26 The operational unit body is in this unit i i ...

Page 11: ...ect to be put In the chamber Is placed 30 Packing panel Packing to seal the gab between the dlamber and the panel 31 Sheathed heater set Heat source heater to generate sterilizing steam 32 Lock shaft Part for locking to seal and fix the chamber and the cover 33 Panel Panel to vertically oartition the chamber and the cover 34 Circuit breaker Electric pert to shut down the power supply circuit in ca...

Page 12: ... SAFETY VAlVE HOSE TANK JOINT ORIFICE 1 8 HEATER AS ELECTROMAGNETIC VALVE NC PIPE EXHAUST PIPE ASSf PIPE COOLING rs PRESSURE GAUGE SENSOR PRSSURE NSK BAOIOB 092 HOSE IN TANK PRESSUR GAUGE 350P PIPE ASSf PRESSURE SENSOR JOINT T VACUUM JOINT T CHAMBER TANK MLS 3781 VALVE VC12B1 F VALVE ASSY DRAIN 3781 PIPE ASSY FREX l250 11 ...

Page 13: ...OID C UD 2 NC NC INC 5 3 OPllONAL PRINTIR CONNECllON 1 5 iiiii WR 4Wli n F 137 81 tf l B I RELAY H CN3 I 7 5 8 2 l9 f tirB 3t1fCN7 auo32 B m11Y FOR COCK U 1 A3781CE TERM L 1378ICE I I BLOCK P C B ASSY CONTROL CE H 1r s g I 1 5 _ L I TlI t L h Lilllill II I CN5I 1Qj J3 MU ER t f2 tt IT17 r5F 3n C E rIl vn 22OY 8220 3781 llIANSFORMER D c Jl SA COOLING FAN 11OV 03751 CE FQ 11OV 13OV N3781 CE POWER TR...

Page 14: ...mperature is displayed by pressing the buttons at the same time I EXHAUST Temperature in the chamber is NOlmng IS cisplaye nowever me WSIer eaung r displayed r temperature is displayed by pressing the buttons at the same time 1 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Elapsed keep warm time is displayed_ However the Temperature in the cham...

Page 15: ...at boiling Exhaustsettinlte f r J Ol 7 C__ n A _ t BoilinlPoint f 65 C f 1 _ i __ i 0 r f HeaterTriack Heater relay Exhault valve NO Handesolenoid Unlocked bypower ON F ShortBeep 1 m Speaker Dilital c isplay 1 I Temp in Chamber Displayed lit hillher than 25 C Dilital c isplay2 Rllmainilll starilizatian i I Processmonitor H ti lll H ting2 Sterilization Exh uat 1 Corq Iet ion 1 0 tI o n CD 1 1 1 1 t...

Page 16: ...emp 7 h 1 ___ i I i i ot I 1 __ __ _ L i r t 1 HeaterTriack Heater relay Exhaust valve NO Handesolenoid Unlocked bypower ON Fon i Stand by ___________ __ k_ i i Digital display 1 I r TV T T T T _ _ __ _ D_ i d_ _h _ _ _ _ _25 T k i 1 m It Stand by Digital diSPlay21 __ r _ l I Processmonitor Heatl1 ll 2 nemaininl sterilization Starlllzation Exhaust 1 Keep wann elapsed Stand by time I KellJlwann Com...

Page 17: ...ngsettingtemp Keep wannsettingtime _ _ _ _ _ _ _ _ _ _ _ r 0 J _ _ _ _ _ _ _ _ Hem erTrieck Heater relay Exhaust valve NO Handesolenoid Unlocked bypower ON Fon ShortB ep Speaker dBo P Coolinl Completion I Lid open 72 hra _ _ _ _ _ _ r r lieP lOtim Digital display 1 T in Chaniler Displayed at hilher then 25 C Digital display2 RemIIininl meltina time Koap warrn elapsed time Proc8samonitor I HtNrtina...

Page 18: ...me Sterilizationsettingtemp l i _________ OFF ilinr i point 1 C BoilinSpont OM I HeaterTriack Heater relay Exhaustvalve NC Handesolenoid Unlocked bypower ON Speaker ep Otim Digital display 1 1 r II T m c w D d h W _ T T I Ietion Digital display 2 St nd by kmomalnlna sten IlAtion 1 1 _ 1 Heatinl Heatinl 2 Sterilization Processmonitor Exhaust Exhaust 2 ...

Page 19: ...ss Melting process Process monitor lamp Melting flickers This process is for melting culture medium etc The temperature in the chamber is detected by the lateral thermistor THI and the power supply to the terilization heate is controlled by microcomputer The temperature can be set every I C between 60 C and 114 C Exhaust process Process monitor lamp Exhaust flickers For INSUMENT STERI By shutting ...

Page 20: ...al tamp keep warm process Check whether or not the exhaust port Higher than 120 C in heating 2 is blocked with sterilization object exhaust process Isn t the amount of heating water Higher than 140 C in heating 3 heating reduced and isn t the chamber is 4 sterilization process heated wnhout water Or higher than set temp 30 C Check for leakage of steam or water E6 Unlocking of the movable The detec...

Page 21: ...lenoid enters the hole of the movable handle By so doing the movable handle is fixed and at the same time the micro switch is pushed by the end of the solenoid and the position of solenoid is detected to start the operation Cautions If the START button is pressed with the cover lock being incomplete the caution sign Lid appears on the digital display of the control panel and the buzzer sounds This...

Page 22: ...t abnormal temperature rise due to heating of empty chamber by heater The power supply is shut down when this device works The thermoslat is of manual reset type The actuating temperature is 145 C 5 C The thermoslat is mounted to the bottom of the chamber To reset it remove the unit side panel and the reset button must be pressed directly Caution Since the thermoslat can not be rest at a high temp...

Page 23: ...s performed the setting mode reset to the normal mode How to enter into the test mode A In stand by display Enter into the setting mode according to the procedure in the How to enter into the setting mode and press the STOP button Then Beep sound is heard and at the same the mode changes to the test mode The difference from the normal mode is such that the decimal point on the Digital Display I li...

Page 24: ...Operation When the SELECT button is pressed the mode progress j j II 23 I Display II 3 18 Preset model name and speech language is I idisplayed E 9 In factory English has been n sel for 3751 or 3781 L r I CLr is displayed F _ L L alProcesSing frequency ois displayed IE 01History of errors is I _ _ _ displayed bP 100 RPe 8 1 SR 0 OP 1FbO OP2 FFbO Preset boiling point is displayed In factory boiling...

Page 25: ...n is pressed while pressing the SET CONFIRM button the content of the change is written in non volatile memory When the TIME button is pressed the mode changes in the order CD CD When the OBJECT TEMp button is pressed during the product information display all the LEOs are light up Note Preparation date and Version display are altered depending on the specification charge actory setting When the S...

Page 26: ...ode I Error Codes 2 t Error No I 04 Error occurring process No 1 Lateral thermistor TH1 Open 2 Bottom thermistor TH3 Open 6 Movable handle Unlock impossible 7 Movable handle and lid Lock impossible 3 Lateral thermistor Abnormal temperature 8 Abnormally high pressure 4 Object temperature sensor TH2 Abnormal temperat 9 Low pressure 5 Bottom thermistor Abnormal temperatura 10 EEPROM communication err...

Page 27: ... is pressed while pressing the SET CONFIRM button the content of the change is written in the non volatile memory Optlon 2 Change bit is selected by pressing the or T button Preset value can be changed by pressing the TIMER button When the START button is pressed while pressing the SET CONFIRM button the content of the change is written in the non volatile memory lCH display ferquency CH display f...

Page 28: ...t valve opens The forced exhaust can be cancelled by pressing the STOP button 6 TImer 60 time speed operation While the TIMER and the SET CONFIRM button at the same time the reservation timer process timer and sterilization timer operate in 60 time speed It is preferable to perfonn the exhaust fast 7 sterilization process starUcompletion signal output Buzzer sounds at the start and completion of t...

Page 29: ...on I Reaching 105 C The correction of temperature is displayed only while the TIMER button is pressed When the SELECT button is pressed while pressing it the display changes in the order of Lateral sensor Object temp sensor Bottom sensor Press sensor Select the thermistor which you want to adjust Press the or A button while pressing the TIMER button and adjust the temperature so that it becomes th...

Page 30: ... C Reaching 135 Perform the 1350C correction in the same manner as the correction at 105 C Set the sterilization temp C and sterilization process Adjust the temp to 121 C after going to the 121 etc sterilization Set the sterilization temp C and sterilization process Adjust the temp to 135 C after going to the 135 C sterilization 29 Example of the lateral thermistor correction display in 121 C corr...

Page 31: ... Object temp sensor Bottom sensor Press sensor Select the pressure correction display Press the or a button while pressing the reservation buttuI and adjust the pressure so that the pressure display valu becomes P 0 When the START button is pressed while pressing the reservatm buttui the corrected value is written in Press the STOP butIpn and remove the tape from the shaft I For adjusting the pres...

Page 32: ... the pressure so that the pressure display becomes same as the value on the pressure gauge of the product When the START button is pressed While pressing the SET DISPLAY button I the corrected value is written in Pressure adjustment Correction See the Mght figure The pressure gauge of the product shows the pressure in MPa and the pressure display value in kPa Pressure adjustment WMting in 31 Nonma...

Page 33: ...t d at bout l4O C1O 2tlMP to b lch w m from th kIIidI 4 Wh n th QOI Ifimation if cornplmd t the ltlriliz tion temp r tu at 135 C d th t ilization tim t 1 min 5 Wh n th proeM i complil tlld thelL the xhaLllt prac IftIr ttl complfiion of the ItlriliDiion pl OCOlu tum OFF th to oomplm the confimlltion 4 Conformatlon of the THl and TH3 temperature When the and butlDns 818 pnIIIslKI at the same time th...

Page 34: ...c Pressu IBoil n_ Point hPa nmHg C m hPa nmHg 382 1060 795 0 101 27 1900 805 2 603 9 300 1049 0 786 7 100 99 2000 795 0 596 3 200 1037 777 8 100 66 2100 785 4 589 1 100 1025 2 768 9 100 33 2200 775 8 581 9 o 1013 760 0 100 00 2300 766 2 574 7 100 1001 4 751 1 99 67 2400 756 6 567 5 200 989 5 742 2 99 34 2500 746 9 560 2 300 977 6 733 3 99 01 2600 737 553 3 400 966 724 6 98 67 2700 728 5 546 4 500 ...

Page 35: ...w TH1 TH3 Fan control I circuit I 5 kef I ILateral temp II Low temp pea sensor sensor IComm onll Sound II T_ _ IITo Circuit circuit d cult circuit 12V DCpower E 5V detection circuit all Hard limiter h I I I 7 A IlUpply circuli 5V I L OV CommutaUon circuit I S Ieoo d III Sol wlw 1 Co on control circuit control circuit DC88V 1 8 23OV 4 22OV 3 200V 2 OV 6 120V 3 110V 2 OV I I I SolenoKj I I st I I Mi...

Page 36: ...ker Is OFF tum nON 2 Check the power cord for any breakage If broken replace the power cord 1 i the P0 NW5Upply Tum OFF the main power supply and turn ON the power switch of the unit and check the conductivity If not conductive replace tha power switch 2 Check the lead wire for removal or looseness ENTERA or CE Check tha lead wire for breakaga 35 ...

Page 37: ...the springs lItted to the shalls 2 Apply grease to the shaft sliding perl When the cover is opened 1 Check ifthe shalls are in due position On just about vertical position 2 Check if the lock shafts open when pushlld outward and they retum to the original position by spring force when relaased If they can not move normally 1 Remove any foreign matter which is pinched and jams the hall 2 Replace th...

Page 38: ... housing H1 Conductivity checking positions Detection switch 1 Between Black 1 and 2 Detection switch 2 Between While 1 and Black 3 Wire Nos are Indicated on the connectors i awIlch Is not conductive housing set M lead wire for breakage housing set OS 37 ON replace the replace the ...

Page 39: ...d OFF when the lock shafts open the switch Is not conductive If the switch is conductive rwplace the housing set M 5 _ is not to tho twater 1 Check the exhaust hose Check if the hose is bent or clogged in the product when exhaust lank Is Installed Correct Kif bent or clogged 2 Check the hose in the exhaust tank Check if the hose is bent or clogged Correct Kif bent or clogged 3 Check if the exhaust...

Page 40: ... PCB set controlTH set 7 6Qfor 3751 L 12OV 13 2Qfor 3781L 26 5Qfor 3751L 230V and 3751 If not replace the heeler 1 C eck 1 g b y I3781 CE for connection and breakage 2 Replace the relay OV 1 Check the housing assemblyB120 3751 or 8220 3781 or 8230 3781 for conneclion or breakage 2 Replace the Triac 3 Replace the PCB set controlTH set chamber It can be restored If a Click sound Is heard Check the I...

Page 41: ...hermistor E3 occurs 1 Check the connector connection 1 Check ifthe socket is inserted completely 2 Check the lead wire for brea 8 2 Check the resistance value of the lateral thermistor THl Remove the connectors from the PCB _ control Checking points bvtester completion and check the resistanoe value beiw8en the terminals of connector side Resistance range 90 Ilot About SO O 41 60 3 Trouble with th...

Page 42: ...tch Conductivity checking posilions DetecUon switch 1 Between White 2 oo 3 Wire Nos are indicated on the connectors I 1 Check connector insertion of the housing set X U 3751 or D T 3781 If not completely Inserted correct n 2 Check the resistance value between the terminals of the solenoid Range of resistance value 160 1852 In cue of short an uit or breakage replace the solenoid 3 Check If the lock...

Page 43: ... 1 Remove any foreign matter which maybe sticking 2 If the lock shall retum spring is weakened replace it 3 If the lock shaft does not move smoothly apply grease Check the condudivity of the switch when is closed If no conductivity 1 Adjust the switch mounting poaition 2 If no conductivity is found ever when the lever is pushed replace the housing set M If no conductivity 1 Adjust the switch mount...

Page 44: ...t control TH set Re lace the PCB set dis I nSOl I 1 Check the Items 2 and 3 of Abnormally high pressure I If any trouble Is found correct It 18 Data can not be read from and written in memory E10 occurs I 1 Trouble with the PCB set conlrOl TH set I Replaoethe PCB set control TH set l Voltage DC p Voltage Ae Checking point Checking point which connects incompl la 2 Check the voltage between V and o...

Page 45: ... is issued and tell the customer that the sound Is not luued In sound warning mode duri normal 0 eration Check that the resislance value at the both ends of connector isabout8Q If short circuit or wire breakage Is found replace the speaker Check the housing set X U 3751 or D T 3781 for incompleted connection and wire breakage If any trouble is found correct it Replace the PCB set control TH set Da...

Page 46: ... CAUTION CheQ the coating ofadhMiYe before mounting pply adhutve KE 44T If 0 1 Apply the adh to all over the edge gf OCMt See FiII 2 Drying time 12 hou l J DlIftIOIIItInc the PC bovd uaentiy 101 control Flg 8 CD DIk onnec t connectors connedecllo l Ie PC boiIrd auembly for amtrd I l Dismount the board from the boerd mounting lpaoerl Packi g of 4 DI tlna the PCB aneriJly for EYC FiII 6 CD DiK onnec...

Page 47: ...l8rclockMae to move it Remove the r winsa loosen the mounting nutl end dismount the healer from the chember See Flgs 9 and 10 7 Dlsmol6ltln the lateral thennlrior TH1 Fig 11 D L ooNn the thermistor mounting BCI 8WI and dismount the thermistor end rubber ring I Dlsmol6ltln the bottom thannlrior THS Fig 12 D I oOIIIIn the thermistor mounting nuls and di mount the thermistor end rubber ring I Dlsmol6...

Page 48: ... Figs 16 and 17 CD Disconnect the connectors connected to the switch Remove each 1 saew which ftxes the switch CWhen dismounting the switch pay attention not to allow a tool or finger s to hit the ectuator of the micro switch Otherwise the 13 Dismounting the pressure gauge Figs 18 and 19 CD Remove the cap nut for piping of the pressure gauge Remove the saews 3 pes which fIX the pressure gauge Cap ...

Page 49: ...he top plate CD Remove the 6 mounting screws at the back side Fig 26 Remove the 4 screws at the both sides Fig 27 19 Dlsmountlna the operation body CD Remove the 6 handle cover mounting screws Fig 28 Remove the 2 mounting screws at the back side Fig 28 The mounting screw at the right side is tightened together with the speaker Remove the 3 mounting screws at the top plate side Fig 29 Since the wir...

Page 50: ...t and left t w IDf Inp J RMIoYe the heIoagoIlIIlCI WIIlI I IictI lad Ow spdngL See Aga 34 III 35 I l RernCMiI tIe hind bracIwt iIPI1nII mounIIng right and IIrft J Remove the I eanhaft look ring Fully open IhIlkllUid pullout th 1 ltuttt J Remove tie top 1tIng mcu ltftg F1g 38 2 PuI 0I t the bush tom the oedor Fig 38 Jl RfIrnoye the 2 look st lllCllYale pl mounting 8CI8WS FIII 37 Mlllumly unlock the...

Page 51: ...actuator Otherwillll tIMI ec tJator may be 1WFTIOWd M DbmcurtInI the Md twttch and lei twitch Ie II 1 Flg 1 cr Ranowt the 1 00 IWIt h mounting 1ICI8W l RemOlll e the 2 aaews of each of the IWItch ftttIng plate C l Ramova aad11 lid switch mounting Icr w tal Cut orr1M binding band II It hen diImounting the 00 awik l l a ld lid bOik h ata ntIon not to allow 001 and tngar 1 to the aoIenoid B IIII i1UI...

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Sanyo MLS-3751, Service Manual

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