Service Manual MDF-U730M
Contents
1. P BAM bel HAM Uh RAR DH p fees wees i i 1 3 E sws2 ib e POA EA EEEE i i 451 i PS a 3 i i SWs1SET f i i i CNS pes F ad 332 5A ALAZ eT Ph d ead MA SAO EAM CA MLE M h EMA A MEN MEN el Te Fl tT elt Tire oe eit titre NEA D iii N B 4 PER PAP LSLPA E T9698 PER E E E j pm mo ow 3 j X ac 240 V 50 HZ o CNI i 4 sara PRI S ETIRRIERITRUAAUTRITRTYET TARE j 1 pee NI j vaasan MINE 65 rb 101 7 300V ioo Mea umm m STIRS ENTORSE EDINA NIEI ERA AT TARTE R TES DI ERPI APIE PIA PTI PHY PPR PEN FRI PENTIER Ir Pn enne gre dne vr mcm mre roe mime nd m odia wee 26 AH AVIA LANES Rid 220 PERITI nr STI A LM CALI RAP rene ed ARIA Mein Pia Cat anta Sa C aL tata aia aa lla Tad Der in a AG ad2. Oo N CO Cooling performance Refrigerant circuit contains HFC refrigerant that effects to environment little Latest cooling system reduces negative factor to global environment With ambient temperature shown at 35 while chamber temperature maintains 30 Fasy operation New type door handle makes an operator s strength less to open the door Levels of shelves are adjustable 2 storage container MDF TO7ST for optional components B Environmental friendly HCFC free refrigerant 404 is used in the refrigeration circuit CP urethane foaming for insulation HCFC free Specifications motructural specifications W650 x D710 x H1520 mm Painted steel Interior Painted steel Shelf 4 polyurethane coated wire Size W626 x 0620 mm Max load 50kg shelf 1 on the left side padlock attachable 1 on the upper side Primary cooling system Hermetic type Output 400W Refrigerant oi 150 Kg Accessories 1 set of key 1 scraper 2 large amp 2 small nylon clips for temperature recorder Optional component Automatic temperature recorder MTR G85 Mounting kit MPR S7 Automatic temperature recorder MTR 4015LH Mounting kit MPR S30 2 sets of basket MDF TO7SC sets of shelves MDF TO7ST mControl specifications MDF U730M Microcomputer control system Temperature setting range 18 35 C Unit 1 C Temp controller Temperature control range 20 30
3. SANYO Biomedical Freezer MDF U730M SANYO Electric Co Ltd Biomedical Business Division o RoHS This product does not contain any hazardous substances prohibited by the RoHS Directive You will find RSF mark near the rating plate on the RoHS compliant product N WARNING You are requested to use RoHS compliant parts for maintenance or repair You are requested to use lead free solder SM9910191 Effective model This service manual is effective for following model Product code Voltage and Frequency MDF U730M 823 010 54 220 230 240V 50Hz MM Contents FediHIeb ASIE eee Specifications Structural specifications Control specifications Performance specifications Dimensions Refrigeration circuits Connections on PCB Electric parts Specifications of sensor Wiring diagram Circuit diagram Control specifications Pull down and pull up data Pressure data Current and power consumption data Temperature uniformity 15points measured Instruction Manual
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5. Non volatile memory Temperature default setting 30 Thermistor sensor LED digital display Display range 0 40 Unit 1 C Note HI is displayed when the temperature is equal or higher than 1 C LO is displayed when the temperature is equal or lower than 41 5 C 15 C for High temperature alarm Default 10 5 C 15 C for Low temperature alarm Default 10 P ALARM lamp blinks and buzzer sounds intermittently with 15min delay Remote alarm activates ALARM lamp blinks buzzer sounds intermittently and remote alarm Alarms Temperature display DOOR lamp is lit and buzzer is emitted with 2min delay activates Temperature display is gone off Present chamber temperature is displayed for 5 seconds with BUZZER key pressed emote Remote alarm terminal DC30V 2A NC COM NO COM Buzzer sounds intermittently abnormal temp Lamps ALARM DOOR Alarm buzzer stop key BUZZER Alarm test key ALARM TEST Control panel Defrost key DEF Set key SET Digit shift key Numerical value shift key Press M key for 5 seconds to display ai LO Key lock is off L1 Key lock is on When any failure is occurred in sensor Error code and HI or LO are alternately displayed e Remote alarm activates e Buzzer sounds intermittently Compressor protection Overload relay and compressor protection cycle Power failure Sensor abnorm
6. for 5 seconds to stop defrosting and start unit cooling For the compressor protection compressor starts operation with 4 minutes of delay even though defrosting is forcibly done Auto return function If there is not any key operation for 90 seconds during setting mode unit automatically reverts to chamber temperature display without the setting value memorized 3 12 13 Compressor delay time After the power is supplied The compressor starts operation with 9 seconds of delay since the power is supplied During cycle operation When the unit is in cycle operation the compressor does not start until 4 minutes elapse once the compressor stops operation Temperature to control compressor When chamber temperature is reached to set temperature 0 3 C compressor starts operation When chamber temperature is reached to set temperature 0 3 compressor stops operation Test data All the data are the reference only Pull down data 230V 50Hz 240V 50Hz NO e 1 2H chamber air temp C 5 6 Time H Pull up data AT35 C No load D gt O NO SES e 1 2H chamber air temp C 4 Time 15 Pressure data AT35 C No load Pd Ps 1 6 1 4 5 6 Time H Current and
7. once Power failure alarm ALARM lamp blinks buzzer sounds remote alarm activates and the display is gone off during power failure If you press BUZZER key buzzer stops sounding and the current chamber temperature is displayed for 5 seconds Any other keys but BUZZER key are inoperative For the compressor protection compressor starts operation with delay after the power retrieves within 4 minutes since the power was failed Door alarm When the door is ajar DOOR lamp is lit After 2 minutes elapse since the door ajar the buzzer sounds Remote alarm does not activate Compressor temperature abnormality When temperature in compressor sensor is over than 95 for 2 seconds compressor stops operation with buzzer sounds and remote alarm activates When temperature in compressor sensor is equal or lower than 60 compressor starts operation again and buzzer stops sounding Thermal sensor abnormality When thermal sensor is failed error code is displayed buzzer sounds and remote alarm activates Compressor is kept operating When thermal sensor is short circuited E01 and HI are alternately displayed When thermal sensor is open circuited E01 and LO are alternately displayed Defrosting Press DEF key for 5 seconds to start defrosting with buzzer sounds Compressor stops operation Current chamber temperature and dF are alternately displayed During defrosting or after defrosting completes press DEF key
8. 5V CN 2 Na Eee al tO mAh Le 4 a Meca rni ania sies i _ M nne Ree Fs IR a E Abl Control specifications 1 Key and Switch BUZZER ALARM TEST SET DEF p gt Digit shift key Numerical value shift key During alarm condition press this key to stop buzzer sounding and remote alarm does not activate During power failure and sensor error remote alarm keeps activating even though you press this key With this key pressed to activate alarm test mode to be forcibly step into alarm condition Buzzer and remote alarm are forcibly activated Press this key again to cancel alarm test condtion Press this key once to activate set mode press the key again to store the value to be changed Press this key for 5 seconds to start defrosting During setting mode the blinking digit shifts among the 1 digit or the 2 digit or 3 digit During setting mode count the blinking digit up every pressed this key Temperature control Setting range Control range Display range Setting procedure Key Lock mode Setting range 18 C 35 C Unit 1 C 20 C 30 C 0 C 40 C Chamber temperature is 1 C or higher Chamber temperature is 41 C or lower Press SET key and set the required value with 2 key and key Press SET key to store the set v
9. Drop out voltage 60 120VAC 50Hz Overload relay Type P12MUF Action to the temp no current ON 130 8 C OFF 69 10 C Action to the current AT25 C 12A Operation time 6 15 sec Starting capacitor Ratin 300VAC 30MF Running capacitor Ratin 400VAC AMF Condensing fan motor Type FL2 C021R5MP Breaker switch Type BAM215131 Rating 16A 250V Rating 240VAC 50 60Hz Rating 12VDC Specifications of sensor The following shows temperature and resistance characteristics on thermal sensor Type 148 202 372 1400 gt Temperature Resistance Temperature Resistance Temperature Resistance Resistance Temperature Resistance Temperature Resistance e5 me _ 9 me _ mae o sas o me 9 se _ n ws n T o o mw wm me wm m o o Cas To Cso W0 amp 3 N SOLIJVdYO SNILAVIS MOLIAS 300d 1 Wiring Diagram Circuit Diagram fil Ks ey ERES n3 155133 28 4K T C3 54131 104 i L3 i c 15 uw m DOOR SWH yY Akt Aud WC EF SEL REM rp ENJ ALARM m
10. ality mPerformance specifications Maximum power consumption 365W 390W 230V 240V Usable conditions 5 C 35 C Humidity Less than 80 RH Design or specifications will be subject to change without notice Refrigeration circuit Sub cooler Sub cooler On unit room left wall On unit room right wall Rotary compressor Skin condenser ON the cabinet rear Accumulator FAN MOTOR mu Check valve Dry core Evaporator Frame pipe Capillary tube Skin condenser NP the cabinet left side Solenoid valve gt Skin condenser ON the cabinet right side 1 Connections on PCB The following shows connections of connector on Temp Control PCB 1 Comp relay To control compressor on off 4 Solenoid valve 5 Breaker switch 1 2 Comp relay To control compressor on off Remote alarm contact outputs In normal condition open for 2 1 and closed for 2 3 1 5 Display PCB To connect to each LED 1 12 Display PCB To connect to each LED 3 4 F sensor To detect temperature in outlet pipe 5 6 Door switch To detect door ajar 3 4 Comp sensor To detect temperature in compressor ili Electric parts MDF U730M 220 230 240VAC 50Hz Compressor Type C 2SN400L5W Code 807 780 25 Rated voltage 50 60Hz 220 240V 50Hz Winding resistance C S Main 6 251 C R Aux 18 79 Starting relay Type AMVL 300A Pick up voltage 185 21 7VAC 50Hz
11. alue 0 or 1 Setting procedure In chamber temperature display keep pressing over 5 seconds Temperature offset to enter into Key Lock mode with buzzer sounds Change the value with 2 key and press SET key to store the value in the non volatile memory For temperature zero calibration for temperature sensor press key for 5 seconds Set value among 9 C 9 C Unit 1 C by 2 key pressed Temperature alarm Setting range Timing High temperature alarm 5 15 Default setting 10 Low temperature alarm 5 C 15 C Default setting 10 C High temperature alarm When chamber temperature is higher than set temperature 5 15 C ALARM lamp is lit and buzzer sounds with 15 minutes of delay Remote alarm activates Low temperature alarm When chamber temperature is lower than set temperature 5 15 ALARM lamp is lit and buzzer sounds with 15 minutes of delay Remote alarm activates 10 11 Setting procedure Keep pressing key and pp key over 5 seconds to enter into setting mode for temperature alarm FOO Set F01 for high temperature alarm or F02 for low temperature alarm Press SET key to set the value to be changed with the 1 digit blinks Press SET key again to store the value in the non volatile memory Note Temperature alarm does not activate when unit starts operating and defrosting Temperature alarm activates after the compressor stops
12. power consumption data AT35 C No load 7 230V power consumption 240V power consumption Jit A 230V current 240V current h Temperature uniformity data 15 points measured Following data are the reference only Test conditions Power source 230V50Hz 20 30 load Upper measured points 1 4 5 H from the top of interior 596 D and W from each corner 5 Center from each corner 5 from the top of interior Middle measured points 6 9 5 D and W from each corner 1 2 H 10 Center from each corner 1 2 H Lower measured points 11 14 5 from Bottom of interior 5 D W from each corner 15 Center from each corner 5 H from Bottom of interior Left Right Temperature uniformity Reference data Unit Measured point Variation 30 95 25 13 29 99 5 729 749 c 31 4 3 0 5 23 0 4 0 0 Amount of
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