Sanyo MDF-U333 Service Manual
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Sanyo MDF-U333 Service Manual

Biomedical freezer
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Service
Manual
Biomedical freezer
MDF-U333
MDF-U537
MDF-U537D
MDF-U537
SANYO Electric Biomedical Co., Ltd.
ＳＭ７２１０１３９

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Summary of Contents for Sanyo MDF-U333

  • Page 1 Service SANYO Electric Biomedical Co., Ltd. Manual Biomedical freezer MDF-U333 MDF-U537 MDF-U537D MDF-U537 ＳＭ７２１０１３９...
  • Page 2 823 169 58 115V 60Hz 823 169 59 110V 60Hz 823 169 60 220V 50Hz 823 169 61 823 169 62 MDF-U333 823 170 51 115V 60Hz 823 170 52 220V 50Hz 823 170 53 220V 60Hz 823 170 54 230V 50Hz...

  • Page 3: Table Of Contents

    Contents ･ F e a t u r e ･ S p e c i f i c a t i o n M D F - Ｕ 3 3 3 M D F - Ｕ 5 3 7 M D F - Ｕ 5 3 7 D ･...

  • Page 4: F E A T U R E

    Features ＜ＭＤＦ－Ｕ３３３＞ ＜ＭＤＦ－Ｕ３３３＞ ＜ＭＤＦ－Ｕ３３３＞ ＜ＭＤＦ－Ｕ３３３＞ ■ HFC refrigerant Refrigerant circuit contains HFC refrigerant that effect to environment little. Latest cooling system reduces negative factor to global environment. With ambient temperature at 35℃, while temperature of inside chamber maintains -30℃. ■ PCM structure PCM structure reduces amount of organic solvent.
  • Page 5 Features ＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞ ＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞ ＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞ ＜ＭＤＦ－Ｕ５３７，５３７Ｄ＞ ■ HFC refrigerant Refrigerant circuit contains HFC refrigerant that effect to environment little. Latest cooling system reduces negative factor to global environment. With ambient temperature at 35℃, while temperature of inside chamber maintains -30℃. ■ PCM structure PCM structure reduces amount of organic solvent.
  • Page 6 Specification MDF-U333 Items Specification Model description Biomedical freezer Model Number MDF-U333 W 614 × D 733 × H 1620 mm Outer dimension (Max) W 490 × D 485 × H 1290 mm Inner dimension Effective chamber capacity 274 lit. Exterior...
  • Page 7 MDF-U333 Items Specification Microprocessor controlled system with non-volatilized memory. Temperature controller Temp. set range : -18℃～-40℃ Temperature sensor Thermistor LED digital display (green colored) by 1℃. Temperature display Range : -50℃～50℃ Changeable SV±5℃～15℃. (Initial SV±10℃) High/Low ALARM lamp brinks and buzzer sounds intermittently Temperature (about 15 min.
  • Page 8 Specification MDF-U537 Items Specification Model description Biomedical freezer Model Number MDF-U537 W 804 × D 772 × H 1802 mm Outer dimension (Max) W 658 × D 607 × H 1272 mm Inner dimension Effective chamber capacity 482 lit. Exterior Zinc galvanized steel w/powder polyester coating (PCM) Interior Polystyrene resin...
  • Page 9 MDF-U537 Items Specification Microprocessor controlled system with non-volatilized memory. Temperature controller Temp. set range : -18℃～-40℃ Temperature sensor Thermistor 2P LED digital display (green colored) by 1℃. Temperature display Range : -50℃～50℃ Changeable SV±5℃～15℃. (Initial SV±10℃) High/Low ALARM lamp brinks and buzzer sounds intermittently Temperature (about 15 min.

  • Page 10: M D F

    Specification MDF-U537D Items Specification Model description Biomedical freezer Model Number MDF-U537D W 804 × D 772 × H 1802 mm Outer dimension (Max) Upper chamber W 658 × D 607 × H 589 mm Inner dimension Lower chamber W 658 × D 607 × H 603 mm Effective chamber capacity 452 lit.

  • Page 11: M D F - Ｕ 5 3 7 D

    MDF-U537D Items Specification Microprocessor controlled system with non-volatilized memory. Temperature controller Temp. set range : -18℃～-40℃ Temperature sensor Thermistor 2P (upper and lower compartment) LED digital display (green colored) by 1℃. Range : -50℃～50℃ Temperature display Selectable to display upper or lower compartment by switch. Changeable SV±5℃～15℃.
  • Page 12 Dimensions ＜ ＜ ＜ ＜ MDF-U333＞ ＞ ＞ ＞ − 9 −...
  • Page 13 Dimensions ＜ ＜ ＜ ＜ MDF-U537＞ ＞ ＞ ＞ − 10 −...
  • Page 14 Dimensions ＜ ＜ ＜ ＜ MDF-U537D＞ ＞ ＞ ＞ − 11 −...

  • Page 15: Refrigeration Circuit

    Refrigeration circuit MDF-U333 Unit：ｍｍ Parts description Specification Evaporator Type Tube on sheet Material Aluminum (φ 8.0) ４A-XH9（134 stamped） Dehydrator Type of molecular sieves Charged q’ty 8±1g 0.686MPaG （7Kgｆ／㎠ G） Capillary tube Resistance φ 1.8×(φ 0.65)×2000mm Dimension Resistance indicator color White...

  • Page 16: D I M E N S I O N S M D F

    Evaporator Type 9lines×1column×5pcs Upper (1) Lower (1) Material Aluminum (φ 8.0) Bottom (3) Dry core Type D-S032T Manufacturer SANYO Solid core 50cm Capillary tube 0.725MPaG （7.4Kgｆ／㎠ G） Resistance (Total number: 2) φ 1.8× Dimension 4500 Resistance indicator color Blue Condenser...
  • Page 17 9lines×1column×5pcs Upper (1) Lower (1) Bottom (2) Material Aluminum (φ 8.0) Lower entrance (1) Dry core Type D-S032T Manufacturer SANYO Solid core 50cm Capillary tube Upper compartmnt Lower compartmnt Resistance 10.3Kg/㎠ G 9.9Kg/㎠ G φ 1.8× φ 1.8× Dimension 4000...
  • Page 18 Refrigeration circuit principle diagram ＜ ＜ ＜ ＜ MDF-U333＞ ＞ ＞ ＞ − 15 −...
  • Page 19 Refrigeration circuit welding points ＜ ＜ ＜ ＜ MDF-U333＞ ＞ ＞ ＞ − 16 −...
  • Page 20 Refrigeration circuit principle diagram ＜ ＜ ＜ ＜ MDF-U537＞ ＞ ＞ ＞ − 17 −...
  • Page 21 Refrigeration circuit welding points ＜ ＜ ＜ ＜ MDF-U537＞ ＞ ＞ ＞ − 18 −...
  • Page 22 Refrigeration circuit principle diagram ＜ ＜ ＜ ＜ MDF-U537D＞ ＞ ＞ ＞ − 19 −...
  • Page 23 Refrigeration circuit welding points ＜ ＜ ＜ ＜ MDF-U537D＞ ＞ ＞ ＞ − 20 −...
  • Page 24 Electrical Parts MDF-U333 AC110V,60Hz AC115V,60Hz AC220-240V , 50/60Hz Compressor Type C-2SN220L0W C-2SN220L2W C-2SN220L5W Code 80771120 80771122 80771125 Rated voltage (50/60Hz) 100 / 100 , 110 -- / 115 220,240 / 220 Winding resistance C-S(Aux) 5.8Ω 7.2Ω 30.6Ω C-R(Main) 1.6Ω 2.0Ω...

  • Page 25: Electrical Parts

    Electrical Parts MDF-U537 AC110-115V,60Hz AC220V,50/60Hz AC230V-240V,50Hz Compressor Type C-2SN350L0R C-2SN350L5S C-2SN350L5S Code 807764201 807763251 807763251 Rated voltage (50/60Hz) Winding resistance C-S(Aux) 5.8Ω 30.6Ω 30.6Ω C-R(Main) 1.6Ω 7.8Ω 7.8Ω Starting relay Type AMVL-180A AMVL-300A AMVL-300A Pick up voltage(50Hz) AC91V∼ 111V AC185V∼ 217V AC185V∼...
  • Page 26 Electrical Parts MDF-U537D AC110-115V,60Hz AC220V,50/60Hz AC230V-240V,50Hz Compressor Type C-2SN350L0R C-2SN350L5S C-2SN350L5S Code 807764201 807763251 807763251 Rated voltage (50/60Hz) Winding resistance C-S(Aux) 5.8Ω 30.6Ω 30.6Ω C-R(Main) 1.6Ω 7.8Ω 7.8Ω Starting relay Type AMVL-180A AMVL-300A AMVL-300A Pick up voltage(50Hz) AC91V∼ 111V AC185V∼ 217V AC185V∼...

  • Page 27: Specifications Of Sensor

    Specifications of sensor The following show temperature and resistance characteristics on each thermistor sensor (type 502). Temperature Resistance Temperature Resistance Temperature Resistance （℃） （kΩ ） （℃） （kΩ ） （℃） （kΩ ） －50 －7 154.50 17.92 8.17 －45 －6 116.50 17.16 7.85 －40 －5...
  • Page 28 Control specification Control specification Control specification Control specification ＜ ＜ ＜ ＜ MDF-U333・ ・ ・ ・ 537・ ・ ・ ・ 537D＞ ＞ ＞ ＞ １． Key and switch Key and switch Key and switch Key and switch １． １． １．...
  • Page 29 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 & solenoid valve OFF. (Use 1 solenoid valve) Model code 003 (MDF-U537D) --- Single compartment →...
  • Page 30 ４． ４． ４． ４． Self diagnosis function E01 ： Temperature sensor (upper compartment temperature sensor for MDF-U537D) is open circuit E02 ： Temperature sensor (upper compartment temperature sensor for MDF-U537D) is short circuit E03 ： Lower compartment temperature sensor is open circuit （for MDF-U537D only） E04 ：...
  • Page 31 ５． ５． ５． ５． Key lock function In PV display、Keep pushing key over 5 seconds to enter key lock mode displaying with “L0”. 1 ・・・・・key lock ON Push key to 0 ・・・・・key lock OFF then press SET key to memorize set value then return to PV display. Note）...
  • Page 32 F07 ： To adjust zero for temperature sensor (Upper compartment sensor for MDF-U537D) F08 ： To adjust zero for temperature sensor (Not available for MDF-U333) (Solenoid valve control sensor for MDF-U537) (Lower compartment sensor for MDF-U537D) F09 ： Not available F10 ：...
  • Page 33 F01 ： To set temperature of high temp. alarm performance in the range of +5℃～+15℃. (initial value : +10℃) F02 ： To set temperature of low temp. alarm performance in the range of -5℃～-15℃. (initial value : -10℃) F03 ： To set temperature of high temp. alarm performance in the range of +5℃～+15℃. (initial value : +10℃) Return to PV display except for lower compartment of MDF-U537D.
  • Page 34 F08 ：To adjust 0 of temperature sensor （setting range: -9.9℃～+9.9℃） 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）.
  • Page 35 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℃(for U537D : both compartments) Low temperature alarm ：...
  • Page 36 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℃from temperature of temperature control sensor (PV) 002 (MDF-U537): Shift +1.0℃from temperature of temperature control sensor (PV) (For upper, lower compartment) 003 (MDF-U537D): Shift +0.0℃from temperature of temperature control sensor (PV)
  • Page 37 Wiring diagram − 34 −...
  • Page 38 − 35 −...
  • Page 39 − 36 −...

  • Page 40: Circuit Diagram <

    Circuit diagram <Main PCB> − 37 −...

  • Page 41: Components On Pcb

    Components on PCB <Main PCB> − 38 −...

  • Page 42: M D F

    Test data ･ＭＤＦ－Ｕ３３３ Pull down ･ＭＤＦ－Ｕ３３３ Pull up ･ＭＤＦ－Ｕ３３３ Cooling unit pressure ･ＭＤＦ－Ｕ３３３ Power consumption ･ＭＤＦ－Ｕ３３３ Temperature uniformity and fluctuation ･ＭＤＦ－Ｕ５３７ Pull down ･ＭＤＦ－Ｕ５３７ Pull up ･ＭＤＦ－Ｕ５３７ Cooling unit pressure ･ＭＤＦ－Ｕ５３７ Power consumption ･ＭＤＦ－Ｕ５３７D Pull down ･ＭＤＦ－Ｕ５３７D Pull down ･ＭＤＦ－Ｕ５３７D Pull up ･ＭＤＦ－Ｕ５３７D Cooling unit pressure ･ＭＤＦ－Ｕ５３７D Power consumption ･ＭＤＦ－Ｕ５３７/D Temperature uniformity and fluctuation...

  • Page 43: Ｍｄｆ－Ｕ３３３ Pull Down

    ＭＤＦ－Ｕ３３３ Pull down AT35℃，no load 50Hz 60Hz Time scale [H] ＭＤＦ－Ｕ３３３ Pull up AT35℃，無負荷 Time scale[H] − 40 −...

  • Page 44: Ｍｄｆ－Ｕ３３３ Cooling Unit Pressure

    ＭＤＦ－Ｕ３３３　Cooling unit pressure Pd(50Hz) Ps(50Hz) Pd(60Hz) Ps(60Hz) 1600 AT35℃，no load 1400 1200 1000 Time scale ［ｈ］ ＭＤＦ－Ｕ３３３　Power consumption W(50Hz) W(60Hz) AT35℃，no load Time scale ［ｈ］ − 41 −...

  • Page 45: W I R I N G D I A G R A

    ＭＤＦ－Ｕ３３３ Temperature uniformity and fluctuation （Test condition） Mains : 1φ100V50/60Hz : 35℃ ： -25℃・-20℃・-30℃ No load Measure with type T sensor Measuring point：Center point of each container １ ２ ３ ４ ５ （１）．ＳＶ＝－２５℃ Measuring point Temperature(℃） Fluctuation(℃） -21.8 -23.2 3( 1/2 center air) ±...

  • Page 46: Ｍｄｆ－Ｕ５３７ Pull Down

    ＭＤＦ－Ｕ５３７　Pull down 50Hz 60Hz AT 35℃，no load Time scale ［H］ ＭＤＦ－Ｕ５３７ Pull up AT 35℃，no load Time scale ［H］ − 43 −...

  • Page 47: Ｍｄｆ－Ｕ５３７Cooling Unit Pressure

    ＭＤＦ－Ｕ５３７Cooling unit pressure Pd(60Hz) Ps(50Hz) Pd(60Hz) Ps(60Hz) 2000 AT 35℃，no load 1500 1000 Time scale [H] ＭＤＦ－Ｕ５３７ Power consumption W(50Hz) W(60Hz) AT 35℃，no load Time scale [H] − 44 −...

  • Page 48: Ｍｄｆ－Ｕ５３７D Pull Down

    ＭＤＦ－Ｕ５３７Ｄ Pull down AT35℃，50Hz，no load Top chamber Bottom chamber Time scale［H］ ＭＤＦ－Ｕ５３７Ｄ Pull down AT35℃，60Hz，no load Top chamber Bottom chamber Time scale［H］ − 45 −...

  • Page 49: Ｍｄｆ－Ｕ５３７D Pull Up

    ＭＤＦ－Ｕ５３７Ｄ Pull up AT35℃，no load Top chamber Bottom chamber Time scale［H］ − 46 −...

  • Page 50: Ｍｄｆ－Ｕ５３７D Cooling Unit Pressure

    ＭＤＦ－Ｕ５３７Ｄ　Cooling unit pressure Pd(50Hz) Ps(50Hz) Pd(60Hz) Ps(60Hz) 2500 AT35℃，no load 2000 1500 1000 Time scale [H] ＭＤＦ－Ｕ５３７Ｄ　Power consumption W(50Hz) W(60Hz) AT35℃，no load Time scale[H] − 47 −...

  • Page 51: C I R C U I T D I A G R A

    ＭＤＦ－Ｕ５３７ / Ｄ　temperature uniformity and fuluctuation Mains ： 100V50Hz ： 35℃ ：-20℃・-25℃・-30℃ No load Mesure with type T sensor Measureing point : Center point of each container /chamber MDF-U537 MDF-U537D １ １ ４ ２ ２ ８ ３ ３ ９ ４ ５...
  • Page 52 ＜Memorandum＞...
  • Page 53 Parts layout ＭＤＦ－Ｕ５３７ ＭＤＦ－Ｕ５３７ ＭＤＦ－Ｕ５３７ 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. Back view of product Door latch Remote alarm terminal Breaker switch Inner parts of door latch ・Temperature control sensor (MDF-Ｕ５３７)

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