Service Manual Biomedical freezer
Contents
1. iii Parts iayout MDF U537 Electrical parts on top Top view of product Access port for recorder wires Inside of control panel Connecter for buzzer Connecter for display P C B Door latch Remote alarm terminal Breaker switch Inner parts of door latch T ail ae Temperature control sensor MDF U537 Temperature control sensor for upper chamber MDF U537D TA pagan Solenoid valve control sensor MDF U537 Temperature control sensor for lower chamber MDF U537D Connecter for tenperature recorder power sourece 492. HARNESS BRET RLY 2P MTS Ju ade 7 BL ex I H SOLENOID VALV TEMP CONTROL RLY DE 5 uE BREAKER SWITCH AC250V 15 L BL RS485 R 232C li POWER CORD TERMINAL TERMINAL SWITCH 3P GN Y DSUB SP TEAM WAL EARTH MTR 480 OPTION INTERFACE BOARD I COMPRESSOR 0 e RELAY GN Y SOCKET VALVE BOTTOM FAN MOTOR YLP 02v Y SOLENOID EARTH EARTH o Lan BE ap tI H 2P T ee em GEO GN Y m 5 Lal gt t m BROWN ue GRAY tr WIRING DIAGRAM LIGHT BLUE em CONDENSING HARNESS HC POWER CORD BUZZER DISPLAY CIRCUIT BOARD DISPLAY 8K CIRCUIT A SENSOR READ WIRE ASSY TEMP SENSOR TOP 15 SWITCH SENSOR READ WIRE ASSY TEMP SENSOR Y BOTTOM TEMP SENSOR BOTTOM TEMP SENSOR CONDENSOR TEMP SENSOR AC250V SENSOR READ WIRE ASSY TEMP SENSOR CONDENSOR TEMP CONTROL CIRCUIT BOARD VALVE BOTTOM SOLENOID SOLENOID VALVE TOP STARTING CAPACITOR RUNNING APACITOR TEMP CONTROL RLY BOTTOM o TEMP RELAY B REMOTE ALARM TERMINAL E CN1 TEMP CONTROL CIRCUIT BOARD 2 CNT BK HARNESS INTERFACE BOARD HARNESS BSN SWITCHING MTR 480 OPTION BUPPLY TEMP HARNESS HSN SWITCH HARNESS BIT HARNESS BCP HARNESS 6 EARTHO BAT
3. Mansion Lower chamber W 658 x 0607 603 mm Effective chamber capacity 452 lit Exterior Zinc galvanized steel w powder polyester coating PCM Interior Polystyrene resin Insulation Rigid polyurethane foam Our doar Zinc galvanized steel w powder polyester coating PCM 2 pcs upper and lower compartment Latch 2 pcs Door lock 1 M 6 pcs upper compartment Inner dimension 290 x 2536 x 136 mm Basket Accessories S 8 pcs lower compartment Inner dimension 290 x 2536 x 400mm Others Defrosting spatula 1 pc key 1 set 14 card holders Caster 4 pcs Leveling legs 2 pcs with caster Access hole 30mm 2 places on rear Weights 136 Kg Evaporator Tube on sheet type function both evaporator and shelf Condenser Wire and tube type Compressor Hermetic type 350W HFC refrigerant Refrigerant M LS n s I i l2 e R 407D Cooling performance 30 C internal 1 2h air temperature 35 C no load Internal temperature control 20 5 30 B o ooo ce RS ANSA tennis d range AT 5 C 35 C no load Power supply Local voltage MDF U537D Items Specification Temperature controller Microprocessor controlled system with non volatilized memory Temp set range 18 40 Temperature sensor Thermistor 2P upper and lower compartment Temperature display LED digital display green colored by 1 C Ran
4. When temperature sensor is short circuit display shows alternately E02 with 50 C b Model code setting for code 002 When solenoid valve control sensor is open circuit display shows alternately E07 with 50 When solenoid valve control sensor is short circuit display shows alternately E08 with 50 C c Model code setting for code 003 When TOP lamp is displayed display shows same as a in upper compartment When BOTTOM lamp is displayed display shows lower compartment temperature When lower compartment temperature sensor is open circuit display shows alternately E03 with 50 When lower compartment temperature sensor is short circuit display shows alternately E04 with 50 C d Error diagnosis Self diagnosis of open circuit is done when it is lower than 60 C Self diagnosis of short circuit is done when it is higher than 60 C E09 is functioned only during ALARM TEST is performed In E10 is displayed When condenser temperature is higher than 85 C it diagnoses as abnormal and indicate E10 When condenser temperature is higher than 100 C force to turn compressor OFF When condenser temperature is lower than 65 C it diagnoses as normal and cancel to force compressor turn OFF When numbers of error happened simultaneously error code of smallest number will be displayed With exception for MDF U537D alternative display of error code and PV which is selected compartment internal temperature During powe
5. AT35 C 000 Pressure kPa 1600 1400 1200 e 800 600 400 200 Pd 50Hz MDF U333 Cooling unit pressure Ps 50Hz Pd 60Hz Ps 60Hz AT35 C no load 2 3 4 5 6 Time scale h Power consumption W 250 200 150 100 50 MDF U333 Power consumption W 50Hz W 60Hz 2 3 4 5 Time scale h AT35 C no load 41 0333 Temperature uniformity and fluctuation Test condition Mains 19 100V50 60Hz AT 35 sv 25 20 30 C load Measure with type sensor Measuring point Center point of each container 1 25 note These data are reference only nia Internal temperature C 0537 Pull down 50Hz 60Hz 35 C no load 0 2 4 6 8 10 12 Time scale H Internal temperature C 0537 Pull up 35 no load 20 0 2 4 6 8 10 Time scale H 43 Pressure kPa 2000 1500 1000 500 Pd 60Hz U537Cooling unit pressure Ps 50Hz Pd 60Hz Ps 60Hz AT 35 C no load Time scale H Power consumption W 300 200 100 0537 Power consumption W 50Hz W 60Hz AT 35 C no load 4 6 8 Time scale H Internal temperature MDF U537D Pu
6. Display range 50 C 50 C Setting method Press SET key and set the required value with gt gt Key Press SET key again to memorize the set value And then return to PV display Out of setting range If change to out of setting range value by mistake and press SET key buzzer sound continuously for 1 second lt Alarm gt High temperature alarm When the internal temperature is higher than SV 5 C 15 C alarm lamp and digital display is blinking After 15min later buzzer will sound and remote alarm contact will turn ON initial value 10 C Low temperature alarm When the internal temperature is lower than SV 5 C 15 C alarm lamp and digital display is blinking After 15min later buzzer will sound and remote alarm contact will turn ON initial value 10 C Setting method Keep pressing EN key over 5 seconds to enter function mode F00 Then press key to count up value Change F01 to input high temperature alarm value 02 to input low temperature alarm value Set either F01 or F02 then press SET key to turn alarm temperature setting mode to set required value with 2 key and gt gt key Press SET key again to memorize value Out of setting range If change to out of setting range value by mistake and press SET key sound buzzer continuously for 1second and remain in setting mode to maintain the setting value 3 Defrosting This function is different
7. Service SANYO Manual Biomedical freezer SANYO Electric Biomedical Co Ltd MDF U333 MDF U537 MDF U537D MDF U537 SM7210139 Effective models This service manual is effective following models MDF U537 82516861 1 82516862 __ hc 2221 00 21 o 220V 50Hz 8 8 8 MDF U537D 110V 60Hz 8231841 82316962 e T AN 230V 50Hz 240V 50Hz 82317060 Contents II dA 1 Specification MDF U333 eenen 3 5 MDESUS37 pumas an 7 Dimensions MDF U333 A 9 afasia 10 M Est 4 1 Refrigeration COU CULE eenn 12 Refrigeration circuit principle diagram MDF U333 15 Refrigeration circuit welding points MDF U333 mn 16 Refrigeration circuit principle diagram MDF U537 17 Refrigeration circuit welding points MDF U537 18 Refrigeration circuit principle diagram MDF U537D 19 Refrigeration circuit welding points MDF U537D 20 Electrical Paria E eed dan 21 Specification of sensor nnn 24 Control specification di ida 25 WINS diagram nn 34 CICL 37 Components ennn 38 Test data nnn 39 Parts loyout m DEDERE TERN 49 PUSET 50 Features lt MDF U333 gt HFC refrigerant Refrigerant circuit contains HFC refrigerant that effect to environment little Latest cooling system reduces negativ
8. type 502 Temperature Resistance Temperature Resistance Temperature Resistance C KQ C KQ 50 154 50 7 17 92 12 8 17 45 116 50 6 17 16 13 7 85 40 88 85 9 16 43 14 7 55 35 68 15 4 15 74 15 7 27 30 52 84 3 15 08 16 6 99 25 41 19 2 14 45 17 6 73 20 32 43 1 13 86 18 6 48 19 30 92 0 13 29 19 6 24 18 29 50 1 12 74 20 6 01 17 28 14 2 12 22 25 5 00 16 26 87 3 11 72 30 4 18 15 25 65 4 11 25 35 3 51 14 24 51 5 10 80 40 2 96 13 23 42 6 10 37 45 2 51 12 22 39 7 9 96 50 2 14 11 21 41 8 9 57 55 1 83 10 20 48 9 9 20 60 1 57 9 19 58 10 8 84 8 18 73 11 8 49 24 control specification lt MDF U333 537 537D gt 1 Key and switch BZ SET DEF ALARM TEST 22 2 TOP BOTTOM When alarm lamp is blinking and buzzer sounds buzzer and remote alarm Output Force to turn off In F25 setting value time is except for 000 buzzer will turn ON after the setting time has passed This RING BACK function would be carried out in s n 110XXXXX or bigger Buzzer is not turned off during alarm test When alarm lamp is blinking and buzzer is off buzzer will not turn on When press this key during power failure current internal temperature is displayed for 5 seconds Press once to setting mode and press again to memorize the set value It works as ENTER key In PV
9. Return to PV display except for lower compartment of MDF U537D To set temperature of low temp alarm performance in the range of 5 C 15 C initial value 10 C Return to PV display except for lower compartment of MDF U537D To set compressor delay start time performed only when main power supplied or microcomputer reset The function is to reduce compressor s start up failure or breaker s blown out that caused by numbers of units simultaneous start up after power failure The setting range of time lag is 1 15 minutes Initial value is 1 minute on factory outgoing SV before doing factory s performance test is 3 seconds or less Therefore the time lag is 0 3 seconds when PCB replacement is done in service It is recommended to input 1 15 for value when PCB is replaced Input service code with EN key and key when F07 and following functions except F21 F22 and F25 would be performed Press SET key to memorize service code to enter function mode again to perform F07 and following functions Service code 384 Note Service code is memorized unless input 000 again F06 or turn power OFF Turn OFF buttery switch and power supply switch are turned OFF Note After using service code on service input 000 again in 06 To adjust 0 of temperature sensor setting range 9 9 C 9 9 C Setting method In F07 displayed press SET key to display 00 0 initial value
10. TEST is performed 8 Auto return function Function During setting mode or key lock mode or function mode with any key not pressed for 90 seconds value will not be memorized to return to PV mode automatically Note In FO9 or F10 auto return function will not be performed 9 Compressor delay start time During cycle time normally force to turn compressor OFF after 2 minutes passed compressor turned off When main power is supplied microcomputer is RESET changeable to set compressor time lag for 1 15 minutes See F05 26 10 Function mode Functions are as follow FOO To return to PV display FO1 change temperature of high temperature alarm F02 To change temperature of low temperature alarm FO3 To change temperature of high temperature alarm Applied for lower compartment of MDF U537D F04 To change temperature of low temperature alarm Applied for lower compartment of MDF U537D F05 To set compressor delay start time F06 input service code 384 F07 adjust zero for temperature sensor Upper compartment sensor for MDF U537D FO8 adjust zero for temperature sensor Not available for MDF U333 Solenoid valve control sensor for MDF U537 Lower compartment sensor for MDF U537D FO9 Not available F10 Not available F11 Not functioned Return to PV display F12 To display temperature of temperature sensor per 0 1 C F13 display temperature of MDF U537 U537D compressor prote
11. display keep pressing the key over 5 seconds to start defrosting During defrosting press the key to quit defrosting During defrosting internal temperature and dF is displayed alternately During defrosting high low temperature alarm is cancelled When sensor error is occurred during defrosting error code and internal temperature is displayed alternately and dF display is turned off During defrosting only buzzer key is acceptable Press the key in PV display alarm test will be start Press again then quit alarm test During alarm test alarm lamp will blink and buzzer will sound intermittently Digital display will be turned off During alarm test only alarm test key is acceptable During setting mode shift between the first digit and the second digit In PV display keep pressing the key over 5 seconds to enter the key lock mode LO display During setting mode count up the blinking digit In PV display keep pressing the key over 5 seconds to enter the function mode F00 display This key is available only in MDF U537D Initially TOP upper compartment temperature is displayed Press key to display BOTTOM lower compartment temperature Press this key during power failure to display compartment temperature for 5 seconds that was not selected before power failure 25 2 Temperature control and High Low temperature alarm lt Temperature control gt Setting range 18 C 40 C
12. 00 means that communication is OFF F22 Tosetserial communication mode Control mode 39 digit 0 Local initial value 1 Remote Baud rate 27 digit 0 2400bps initial value 1 4800bps 2 9600bps 1 digit is not used Note Set control mode as remote unable to change SV and to activate defrosting F25 To set value for alarm recovery ring back time Input value 000 010 020 030 040 050 060 In 000 recovery function is OFF 11 Differential COMP ON OFF point on program COMP ON permit Activate at 0 0 C higher than SV COMP OFF Activate at 0 6 C lower than SV 12 Offset value 13 14 15 The function is to correct differential value between temperature of temperature sensor and of internal 1 2H centre of chamber Initial offset 001 MDF U333 Shift 1 5 Cfrom temperature of temperature control sensor 002 MDF U537 Shift 1 0 Cfrom temperature of temperature control sensor PV For upper lower compartment 003 MDF U537D Shift 0 0 Cfrom temperature of temperature control sensor PV For upper lower compartment Second offset 001 MDF U333 None 002 MDF U537 18 C gt SV 2 25 C shift O Cfrom PV For upper lower compartment 26 C2SV shift 1 0 from PV For upper lower compartment 003 MDF U537D 18 C Z SV 2 30 C shift PV 2 4 18 SV 5 For upper compartment 30 C gt SV shift 0 Cfrom PV For upper compartment Note For lower compart
13. ALARM lamp brinks and buzzer sounds intermittently about 15 min delay Remote alarm contact turns ON during power failure alarm Alarm Power failure ALARM lamp brinks buzzer sounds intermittently remote alarm contact turns ON during power failure alarm Remote alarm contact Remote alarm terminal 3P contact capacity DC30v Max2A N O During power failure temperature alarm ON Control panel Operation panel ALARM lamp BUZZER Buzzer key ALARM TEST Alarm test key SET To switch the SV and PV gt To shift the set digit A To change the SV DEF Defrost key Rear Power switch Breaker switch Battery switch Power failure alarm switch Key lock function Press gt key for five seconds LO Unlock L1 Lock Self diagnosis function When each sensor 15 in fault Error code and internal temperature are displayed alternately Remote alarm contact turns ON with buzzer sounds Power switch Breaker switch Compressor protection Overload relay Option Chart recorder MTR G85 Mounting kit MPR S7 for bottom mounting MDF S740T for top mounting Specification II MDF U537 Items Specification Model description Biomedical freezer Model Number MDF U537 Outer dimension Max W 804 x D772 x H1802 mm Inner dimension W658 x D607 x H 1272 mm Effective chamber capacit
14. FACE BOARD E n BATTERY SWITCH BREAKER SWITCH 250 154 Aul INTERFACE BOARD MTR 480 OPTION __ L B En 0 RELAY SOCKET nS CONTROL amO REDAK EARTH T YELLOW BROWN BL LU CAPACITOR Wo ORANGE GRAY 6 441 163 00 1 wor usss Tami Do RNE DRR GRAM HARNESS HC U333 CAPACITOR POWER CORD umm DISPLAY CIRCUIT BOARD 000000000000 154 OR BREAKER SWITCH AC250V TEMP SENSOR TEMP SENSOR o A CN6 TEMP CONTROL CIRCUIT BOARD VALVE BOTTOM SOLENOID REMOTE ALARM TERMINAL SWITCH EN INTERFACE BOARD MTR 480 OPTION BATTERY BATTERY SOLENOID VALVE RELAY SWITCHING POWER SUPPLY TEMP CONTROL RELAY COMPRESSOR STARTING 2 BL RUNNING CAPACITOR STARTING CAPACITOR FAN MOTOR YELLOW 6 441 161 00 2 i 5 ORANGE VIOLET U537 GREEN HARNESS HSN Ede BUZZER DISPLAY 2P CIRCUIT BOARD CNSI CNS SENSOR READ WIRE ASSY TEMP SENSOR IS TEMP SENSOR SENSOR READ WIRE ASSY VALVE gt TEMP SENSOR SENSOR READ WIRE ASSY CONDENSOR lt gt HARNESS HDP 18P BK CAPACITOR Py d STARTING CN8 TEMP CONTROL CIRCUIT BOARD in CNT zH i H5 BDP HARNESS BSN SWITCHING POWER SUPPLY HARNESS BIT HARNESS HARNESS BCP EARTH OS zm GN Y BL
15. Set temperature with EN key and 22 key and press SET key again to memorize set value Input is done by differential value Ex When actual temperature of 1 2h is shown 28 5 Cand digital display is shown 30 C add 1 5 to value in F07 Calculation 28 5 30 1 5 EN key enables to change only 0 and in second digit and to change 0 9 in first digit and first decimal place key enables to shift the second digit the first digit gt the first decimal place Sthe second digit F08 To adjust O of temperature sensor setting range 9 9 C 9 9 C In F17 It is functioned in model code 002 MDF U537 003 MDF U537D Return to PV display in model code 001 MDF U333 Setting method In F08 displayed press SET key to display 00 0 initial value Set temperature with 2 key and key press SET key again to memorize set value Input is done by differential value Ex When actual temperature of 1 2h chamber is shown 28 5 Cand digital display is shown 30 C 1 5 to value in F08 Calculation 28 5 30 1 5 Llkey enables to change only 0 and in second digit and to change 0 9 in first digit and first decimal place pb key enables to shift the second digit the first digit the first decimal place the second digit F12 Temperature of temperature sensor is displayed as per 0 1 C From second digit to first decimal point is shown in display It is not
16. TERY BATTERY CONTROL LL DK RELAY T HARNESS BRET SWITCHING 2P POWER BK BK SUPPLY p i RS485 RS232C TERMINAL TERMINAL REMOTE m NERIS POWER CORD 3P DSUB 9P ALARM RECORDER 1 2P j n TEMP CONTROL COMP RELAY L BL L BL ee I BREAKER SWITCH AC250V 15 EARTH SHIT GN Y TERMINAL Q EARTH HARNESS RD INTERFACE BOARD I COMPRESSOR 1 MTR 480 OPTION 1 i I I OPTION 1 RUNNING CAPACITOR Si e RELAY 4 SOCKET STARTING CAPACITOR VALVE TOP SOLENOID VALVE BOTTOM HARNESS HC EARTH Bk BL GN Y m N CONDENSING d FAN MOTOR YELLOW BROWN dn TFB 6 P441 159 00 1 di VIOLET WIRING MDF U537D GREEN LIGHT BLUE ap w 321 CONDENSING ED FAN MOTOR SOLENOID lt V E DU EARTH O e TBL s E ao III circuit diagram lt Main PCB gt SERIAL COM REMOTE ALARM CONTROL RELAY HEATER RELAY FANMOTOR RELAY aus isir cu of t27 7 lt lt 28 0 014F C29 0 0155 20 0 016F eec o C3 0 15 TU WES SET CAL b gt TOP BOTTOM 021 18R139 400 7074 18418424667772725 5 55 lt BUZZER ALARM TEST DEF AAA A 4 BUZZER PWB 4 cri
17. by each model code products a In PV display keep pressing DEF key over 5 seconds defrosting will be started Model code 001 MDF U333 Force to turn compressor OFF Model code 002 MDF U537 Force to turn compressor amp solenoid valve OFF Use 1 solenoid valve Model code 003 MDF U537D Single compartment Force to turn OFF solenoid valve at the ROOM lamp illuminated Both compartments Force to turn OFF 2 solenoid valves amp compressor b Press again DEF key to quit defrosting Manual start and finish 95 4 Self diagnosis function E01 E02 E03 E04 E10 E05 E06 E07 E08 E09 Temperature sensor upper compartment temperature sensor for MDF U537D is open circuit Temperature sensor upper compartment temperature sensor for MDF U537D is short circuit Lower compartment temperature sensor is open circuit for MDF U537D only Lower compartment temperature sensor is short circuit for MDF U537D only Compressor protect sensor is open circuit for MDF U537 U537D Compressor protect sensor is short circuit for MDF U537 U537D Solenoid valve control sensor is open circuit for MDF U537 only Solenoid valve control sensor is short circuit for MDF U537 only Buttery switch OFF with ALARM TEST Compressor temperature is abnormal for MDF U537 U537D a Model code setting for code 001 002 003 When temperature sensor is open circuit display shows alternately E01 with 50
18. ct sensor per 1 C F14 display temperature of temperature sensor per 0 1 C Solenoid valve control sensor for MDF U537 Lower compartment sensor for MDF U537D F15 Not available F16 Not functioned Return to PV display F17 set or check model code model code 001 MDF U333 model code 002 MDF U537 model code 003 MDF U537D F18 Preset value for second offset performance 26 C for MDF U537 U537D F19 Not functioned Return to PV display F20 Not functioned Return to PV display F21 communication ID 000 255 F22 communication mode F23 24 26 29 With input each function code press SET key to sound buzzer 1 second continuously to maintain input status F25 To set alarm ring back time Setting value 000 010 020 030 040 050 060 Setting method In PV display keep EN key pressing over 5 seconds to enter function mode and will be displayed F00 Press EN key to input required function code then press SET key again FOO functioned In FOO displayed press SET key to return PV display 29 F01 F02 F03 F04 F05 F06 FO7 To set temperature of high temp alarm performance in the range of 5 C 15 C initial value 10 C To set temperature of low temp alarm performance the range of 5 C 15 C initial value 10 C To set temperature of high temp alarm performance in the range of 5 C 15 C initial value 10 C
19. e 16 Refrigeration circuit principle diagram lt MDF U537D gt Upper Solenoid valve Capillary tube compartment Evaporator Condensor Drycore Lower compartment Evaporator Frame pipe Compressor 19 Refrigeration circuit welding points lt MDF U537D gt Frame Pipe 72 1 Condensor DD PC co PLS pol B Compressor Solenoid valve D Electrical Parts HN __ 220 240 50 60H C 2SN220L5W 80771125 Compressor A Starting relay 180 MVL 180A MVL 300A Pick up voltage 50Hz AC91V 111V AC91V 111V AC185V 217V 60Hz AC108 128V AC108 128V AC215 232V 60Hz Overload relay Action to the temp No current Action to the current AT25 Q 2404 195A Non Action to the temp soe 2 5A more than 30 minutes P eum umo Non Action 30 minutes 30 minutes Temp control relay Switching power supply 50 60Hz 0 3A 50 60Hz 0 3A 50 60Hz 0 3A Battery Battery switch Breaker switch 1 Drop out voltage 50Hz AC30 65V AC30 65V 6 120V 1 Electrical Parts MDF U537 220 506 230 240 50 2 Rated voltage 50 60Hz Starting relay Pick up voltage 50Hz 60Hz Drop out voltage 50Hz 60Hz Overload relay Actio
20. e factor to global environment With ambient temperature at 35 C while temperature of inside chamber maintains 30 C PCM structure PCM structure reduces amount of organic solvent B Temperature control function Unified temperature control range for same categories realized to set 20 C which is suitable for reagent preservation B Specification unified Unified specification for same categories which also realized to unify performance for high low temperature alarm SV is changeable in the range 5 15 power failure alarm remote alarm terminal setting memorization by non volatile memory Adopt new microprocessor system for display panel and keypad makes operation easily Self diagnosis function Abnormal condition for temperature sensor is indicated by self diagnosis system Validation Control panel enables zero 0 adjust for validation B New door latch mechanism New door latch is adopted in order to close door surely for reagents It is also available to use individual lock mechanism Insulation wall thickness Unit has necessary insulation performance for each temperature range Combination of PCM and frame form makes 610mm for frame size commonly Option Internal temperature observation system is option Unit has communication function corresponding to it Features lt MDF U537 537D gt HFC refrigerant Refrigerant circuit contains HFC refrigerant that effect to environment l
21. er sounds Option Chart recorder MTR G85 Mounting kit MPR S7 for bottom mounting MDF S740T for top mounting Dimensions lt MDF U333 gt 650 fic dre ud EA m e r T EELS END SECTION 614 Max FRONT ELEVATION III Dimensions MDF U537 840 38 800 1773 1802 804 Max END SECTION 23 FRONT ELEVATION III Dimensions lt MDF U537D gt 840 END SECTION FRONT ELEVATION Refrigeration circuit MDF U333 Unit mm Parts description Specification Evaporator Type Tube on sheet Material Aluminum 8 0 Dehydrator Type of molecular sieves 4A XH9 134 stamped Charged qty 8 19 Capillary tube Resistance 0 686 7Kgf cmi G Dimension 1 8 0 65 x 2000mm Resistance indicator color White Condenser assembly A Type Wire and tube Dimension 480 x 40 30 columns Condenser assembly B Type Wire and tube Dimension 480 x P40 x 30 columns Note Lower 2 columns are used in desuper circuit Frame pipe Material C1220T 1 2H Dimension 4 0 5 Evacuation and vacuum Evacuation time over than 20min by 2 ports high pressure and low pressure pressure side N2 exchange When charged vacuum pressure is lower than 1 0torr pump capacity 300L min Refrigerant and oil Re
22. frigerant R 134a Charged q ty 226 5g Oil CF 32 Charged qty 230 10 Oil additive n pentane Charged qty 149 Refrigeration circuit spec and welding points Refer to following pages Ba Refrigeration circuit MDF U537 Unit mm Parts description Specification Evaporator Upper 1 Lower 1 Type 9lines x 1column x 5pcs Material Aluminum 8 0 Manufacturer Solid core Capillary tube Resistance 0 725 7 4Kgf cmi Total number 2 Dimension 1 8x 4500 Resistance indicator color Blue front Total number 4 Dimension 480 x 40 x 6 columns Frame pipe Material C1220T Evacuation and vacuum Evacuation time over than 20min by 2 ports high pressure and low pressure pressure side N2 exchange When charged vacuum pressure is lower than 1 0torr pump capacity 300L min Refrigerant and oil Oil CF 32 Charged qty 280 10 Oil additive n pentane Charged q ty 19g Refrigeration circuit spec and welding points Refer to following pages 3a Refrigeration circuit MDF U537D Unit mm Parts description Specification Evaporator assembly Upper 1 Lower 1 Bottom 2 Material Aluminum 8 0 Lower entrance 1 Manufacturer Solid core Capillary tube Upper compartmnt Lower compartmnt Resistance 10 9 9 Dimension 1 8x 4000 1 8x 3000 Resista
23. ge 50 50 Selectable to display upper or lower compartment by switch High Low Temperature Alarm Changeable SV 5 C 15 C Initial SV 10 C ALARM lamp brinks and buzzer sounds intermittently about 15 min delay Remote alarm contact turns ON during power failure alarm Power failure ALARM lamp brinks buzzer sounds intermittently remote alarm contact turns ON during power failure alarm Remote alarm contact Remote alarm terminal 3P contact capacity DC30v 2A N O During power failure temperature alarm ON Control panel Operation panel ALARM lamp BUZZER Buzzer key ALARM TEST Alarm test key SET To switch the SV and PV gt To shift the set digit A To change the SV DEF Defrost key TOP BOTTOM Switch key to display upper or lower compartment Rear Power switch Breaker switch Battery switch Power failure alarm switch Key lock function Self diagnosis function Press gt key for five seconds LO Unlock L1 Lock When each sensor is in fault Error code and internal temperature are displayed alternately Remote alarm contact turns ON with buzzer sounds Power switch Breaker switch Compressor protection Overload relay Detect temperature near compressor by thermistor sensor to control compressor during overload Alarm Error code and internal temperature are displayed alternately Remote alarm contact turns on with buzz
24. ion Max 614 0733 x H 1620 mm Inner dimension W 490 x D485 x H 1290 mm Effective chamber capacity 274 lit Exterior Zinc galvanized steel w powder polyester coating PCM Interior Polystyrene resin Insulation Rigid polyurethane foam Outer door 1 pc Zinc galvanized steel w powder polyester coating PCM Latch 1 pc Door lock 1 pc Back L 4 pcs Inner dimension 446 x 2369 x 220 mm Accessories S 1 pc for bottom column Inner dimension 487 x 2221 x 155mm Others Defrosting spatula 1 pc key 1 set 4 card holders Caster 4 pcs Leveling legs 2 pcs with caster Access hole 30mm 1 place in left side Weights 81 Kg Evaporator Tube on sheet type function both evaporator and shelf Condenser Wire and tube type Compressor Hermetic type 225W listan UL a Cooling performance 30 C internal 1 2h air temperature 35 no load Internal temperature control range 20 C 30 C AT 5 C 35 C no load Power supply Local voltage MDF U333 Items Specification Temperature controller Microprocessor controlled system with non volatilized memory Temp set range 18 40 Temperature sensor Thermistor Temperature display LED digital display green colored by 1 C Range 50 50 High Low Temperature Changeable SV 5 C 15 C Initial SV 10 C
25. ittle Latest cooling system reduces negative factor to global environment With ambient temperature at 35 C while temperature of inside chamber maintains 30 C PCM structure PCM structure reduces amount of organic solvent B Temperature control function New cooling system realizes to set 20 C which is suitable for reagent preservation B Specification unified Unified specification for same categories which also realized to unify performance for high low temperature alarm SV is changeable in the range 5 15 power failure alarm remote alarm terminal setting memorization by non volatile memory Adopt new microprocessor system for display panel and keypad makes operation easily Self diagnosis function Abnormal condition for temperature sensor is indicated by self diagnosis system Validation Control panel enables zero 0 adjust for validation B New door latch mechanism New door latch is adopted in order to close door surely for reagents It is also available to use individual lock mechanism B Draw box for reagent preservation 100mm for depth of box makes things easily to arrange and take in amp out Adopted in bottom chamber of MDF U537 U537D Compressor protection function Sensor detects compressor s warming up to control unit running Specification II MDF U333 Items Specification Model description Biomedical freezer Model Number MDF U333 Outer dimens
26. ll down AT35 C 50Hz no load Top chamber Bottom chamber 4 6 8 10 12 Time scale H Internal temperature MDF U537D Pull down AT35 C 60Hz no load Top chamber Bottom chamber Time scale H 45 Internal temperature C MDF U537D Pull up 30 20 chamber 4 6 Time scale AT35 C no load Top chamber Bottom Pressure kPa 2500 2000 1500 1000 500 MDF US537D Cooling unit pressure Ps 50Hz Pd 60Hz Ps 60Hz AT35 C no load Time scale H Power consumption W 500 400 300 200 100 MDF U537D Power consumption W 50Hz W 60Hz AT35 C no load 4 6 8 10 12 Time scale H 4 MDF U537 D temperature uniformity and fuluctuation Mains 100V50Hz AT 35 sv 20 C 25 C 30 No load Mesure with type T sensor Measureing point Center point of each container chamber MDF U537 MDF U537D MDF U537 Measuring point SV 20 C SV 25 C SV 30 C Uniformity deg Fluctuaation C MDF U537D sv 250 5305 1 17 7 224 27 4 3 18 8 24 9 30 8 5 22 4 25 8 29 8 6 21 3 25 3 29 5 7 20 5 25 8 30 4 8 17 9 23 3 28 1 E 0 9 sz me 304 FluctuastionL C note These data are reference only lt Memorandum gt
27. ment add 0 C to PV Display offset In display temperature that is lower than SV is shown for a little time With this case display offset 0 5 be done Round off numbers to the first decimal point Remote alarm During normal operation Remote alarm contact is OPEN During alarm or power failure Remote alarm contact is CLOSE Others MDF U537 In case of 18 C2SV2 25 C with PV SV 5 C20 Solenoid valve is Forced to turn OFF MDF U537 In case of PV SV 0 6 C 20 with PV top 1 gt 0 Solenoid valve is Forced to turn OFF In PV SV 0 6 lt 0 quit to be forced to turn OFF 8 LOWER CORD 15 HARNESS W BUZZER EK nn BREAKER SWITCH 250 2P SENSOR READ TEMP y WIRE ASSY SENSOR RECORDER HARNESS HDP ELEC BOX STARTING DISPLAY CIRCUIT BOARD BUZZER TEMP SENSOR CN8 CNI ae TEMP CONTROL CIRCUIT BOARD Eu CNT CNG iii CIRCUIT BOARD HARNESS BC NL BU U 2 lt I pl tni tn ay Q9 Li 2 04 lt x HARNESS HSN HARNESS BCP E SUPPLY 2 TEMP CONTROL DI RELAY ALARM TERMINAL 8 1 B 1 8 RS485 RS232C BATTER POWER CORD TERMINAL TERMINAL REMOTE SWITCH POWER CORD DSUB 9P SWITCHING 3P I ALARM EARTH POWER MTR 480 OPTION TERMINAL COMPRESSOR SUPPLY INTER
28. n to the temp No curren __ LL O Non Action to the temp 8C __ EA Non Action 30 minutes 30 minutes 30 minutes Temp control relay Solenoid valve control relay Switching power supply 50 60Hz 0 3A 50 60Hz 0 3A 50 60Hz 0 3A Temperature sensor Solenoid valve control sensor DF 537 DF 537 Solenoid valve coil ng n 120V 50 60Hz 220V 50 60Hz 240V 50 60Hz Condensing fan motor U2 A051B1MP FU2 A051B5MP FU2 A051B5MP F AC110 115V 50 60Hz 220 240V 50 60Hz 220 240V 50 60Hz Thermal fuse 130 C 130 C 130 C Electrical Parts 71 MDF U537D __ Ac2zovsooHz ACZSOV 240V 50Hz Compressor Rated voltage 00 Starting relay Pick up votage S0Hz 60Hz Drop out voltage 60Hz Overload relay Action to he temp No cuen o oo Operation time 6 15 seconds 6 15 seconds 6 15 seconds Non Action to the temp 80 0 fT een enr EE Non Action 30 minutes 30 minutes 30 minutes Compressor relay Temp control relay Switching power supply 50 60Hz 0 3A 50 60Hz 0 3A 50 60Hz 0 3A Temperature sensor Solenoid valve control sensor DF 537D DF 537D 2 pos n F AC110 115V 50 60Hz 220 240V 50 60Hz 220 240 50 60Hz Thermal fuse 130 C 130 C 130 C III Specifications of sensor III The following show temperature and resistance characteristics on each thermistor sensor
29. nce indicator color Yellow Red front Total number 4 Dimension 480 x 40 x 6 columns Frame pipe Material C1220T eee Dimension 4 0xt0 5x 7470 Evacuation and vacuum Evacuation time over than 20min by 2 ports high pressure and low pressure pressure side N2 exchange When charged vacuum pressure is lower than 1 0torr pump capacity 300L min Refrigerant and oil Refrigerant R 407D Charged qty 357 59 Oil CF 32 Charged qty 280 10cc Oil additive n pentane Charged qty 23g Refrigeration circuit spec and welding points Refer to following pages Type 9lines x 1column x 5pcs Ma Refrigeration circuit principle diagram lt MDF U333 gt Condensor Evaporator Frame pipe Dehydrator Desuperheater Capillary Accumulator Accumulator Compressor 454 Refrigeration circuit welding points lt MDF U333 gt Frame Pipe Condensor on L l L Ll DI 3 0 Evaporator Compressor Accumulator Check Valve 16 Refrigeration circuit principle diagram lt MDF U537 gt Condensor Capillary tube Drycore Evaporator Frame pipe Header Compresso Ea Refrigeration circuit welding points lt MDF U537 gt Frame Pipe X usus Ss a ee 2 Condensor DDI PC DP Compressor j a HM Solenoid valv
30. r failure display shows alternately 09 with blank Da 5 Key lock function In PV display Keep pushing gt over 5 seconds to enter key lock mode displaying with LO Push key to di AR key lock ON Reus key lock OFF then press SET key to memorize set value then return to PV display Note With key lock ON to enter SET mode but unable to change value With key lock ON to perform Function and ALARM TEST while unable to perform DEF 6 Power failure alarm Buzzer and display isn t functioned without buttery power supplied When power failure is occurred power failure alarm will be turned on by battery inside units During power failure alarm alarm lamp is blinking digit display turns off buzzer sounds intermittently and remote alarm contact turns ON Press BZ key to turn power failure alarm buzzer OFF Press BZ key to display PV for 5 seconds During power failure alarm only BZ key TOP BOTTOM key for MDF U537D is available 7 Alarm test The function is to check performance failure for alarm lamp buzzer and remote alarm In PV display press ALARM TEST key to blink alarm lamp to sound buzzer intermittently to turn remote alarm contact on Without time delay Digital display will be turned off During alarm test only ALARM TEST key 15 available Note During alarm test with buttery switch turned OFF to display error code E09 Displaying error code E09 takes priority over other error codes before ALARM
31. rm Alarm Power failure ALARM lamp brinks buzzer sounds intermittently remote alarm contact turns ON during power failure alarm Remote alarm contact Remote alarm terminal 3P contact capacity DC30v 2A N O During power failure temperature alarm ON Control panel Operation panel ALARM lamp BUZZER Buzzer key ALARM TEST Alarm test key SET To switch the SV and PV gt To shift the set digit A To change the SV DEF Defrost key Rear Power switch Breaker switch Battery switch Power failure alarm switch Key lock function Press gt key for five seconds LO Unlock L1 Lock Self diagnosis function When each sensor 15 in fault Error code and internal temperature are displayed alternately Remote alarm contact turns ON with buzzer sounds Power switch Breaker switch Compressor protection Overload relay Detect temperature near compressor by thermistor sensor to control compressor during overload Alarm Error code and internal temperature are displayed alternately Remote alarm contact turns on with buzzer sounds Option Chart recorder MTR G85 Mounting kit MPR S7 for bottom mounting MDF S740T for top mounting Specification II MDF U537D Items Specification Model description Biomedical freezer Model Number MDF U537D Outer dimension Max W 804 x D772 x H 1802 mm Upper chamber W658 x D607 x 589 mm
32. shown in display when temperature is lower than 20 C Ex Actual temperature 35 C Display shows 35 0 C When temperature is within the range of 19 9 C 0 1 C is displayed Range 72 0 83 0 C 9 9 C F13 Temperature of compressor protect sensor is displayed as per 1 C Range 72 163 F14 Temperature sensor solenoid valve control sensor for MDF U537 lower compartment temperature control sensor for MDF U537D Temperature of each sensor is displayed as per 0 1 C From second digit to first decimal point is shown in display It is not shown in display when temperature is lower than 20 C Ex Actual temperature 35 Display shows 35 0 When temperature is within the range of 19 9 0 1 C is displayed Range 72 0 83 0 C zs 31 F17 Model code setting or checking 001 MDF U333 002 MDF U537 002 MDF U537D Followings are initial setting values Internal temp SV 30 for U537D both compartments Key lock mode 0 OFF High temperature alarm SV 10 C for U537D both compartments Low temperature alarm SV 10 C for U537D both compartments 0 adjustment 0 C for temperature sensor Compressor start delay time 1 minute Communication ID 000 Communication mode 000 Alarm ring back time 030 30 minutes Set model code as MDF U537 MDF U537D to activate compressor protect function F21 set serial communication ID Input range 000 255 0
33. t PT SENSOR Des ne 2 HOR 04 8810 0543 08 8810 0543 010 9810 0543 012 4810 0543 014 810 08 3 nAA C25 10 TEMP SENSOR Components on lt Main PCB gt 9 2 40 1 00 080 1018 84 1531 Hay 9SAS 330 O 32218 E 136 O Y V E GSAS a mb 43 JA c E gt 4 c lt a m JB ae e ce 2 2 a gt fe Eu gt Za 4 25 gt 48 x 5 es O taza II Test data I 0333 Pull down MDF USSS MDF USSS Cooling unit pressure MDF USS33 Power consumption Temperature uniformity and fluctuation MDF US37 Pull down 43 MDF US37 Pull up 43 MDF U537 Cooling unit pressure ortus dunno cool du 44 MDF U537 Power consumption 44 MDF U537D Pull down EEO 45 MDF USS ZD Pul down PRAS 45 MDF U537D Pull up 46 MDF U537D Cooling unit pressure Ee EAS I amaka 47 MDF US537D Power consumption 47 MDF U537 D Temperature uniformity and fluctuation 48 39 Internal temperature C 0333 Pull down AT35 Q no oad 4 6 Time scale H Internal temperature C 20 0333 Pull up 4 Time scale H
34. y 482 lit Exterior Zinc galvanized steel w powder polyester coating PCM Interior Polystyrene resin Insulation Rigid polyurethane foam Outer dor 2 Latch 2 pcs Door lock 1 M 6 pcs upper compartment Inner dimension 290 x 2536 x 136 mm Accessories RASKEL S 8 pcs lower compartment Inner dimension 290 x 2536 x 100mm Others Defrosting spatula 1 pc key 1 set 14 card holders Caster 4 pcs Leveling legs 2 pcs with caster Access hole 30mm 1 place on rear Weights 131 Kg Evaporator Tube on sheet type function both evaporator and shelf Condenser Wire and tube type Compressor Hermetic type 350W HFC refrigerant Relngerdnt unssasssssassasassasasssspassansspasassasspanassqassssaassssasasanaspasnussusaassussa 4070 Cooling performance 30 C internal 1 2h air temperature AT 35 no load Internal temperature control 20 30 eee range AT 5 C 35 C no load Power supply Local voltage MDF U537 Items Specification Temperature controller Microprocessor controlled system with non volatilized memory Temp set range 18 40 Temperature sensor Thermistor 2P Temperature display LED digital display green colored by 1 C Range 50 50 High Low Temperature Changeable SV 5 C 15 C Initial SV 10 C ALARM lamp brinks and buzzer sounds intermittently about 15 min delay Remote alarm contact turns ON during power failure ala
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