Sanyo MDF-C2156VAN Service Manual
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Sanyo MDF-C2156VAN Service Manual

Ultra-low temperature freezer
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Service Manual
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.)
WARNING
* You are requested to use RoHS compliant parts for maintenance or repair.
* You are requested to use lead-free solder.
Ultra-Low Temperature Freezer
MDF-C2156VAN
MDF-C2156VANC
FILE No.
SANYO Electric Co., Ltd.
Biomedical Business Unit
SM9910079

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  • Page 1 FILE No. Ultra-Low Temperature Freezer MDF-C2156VAN MDF-C2156VANC SANYO Electric Co., Ltd. Biomedical Business Unit 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.) WARNING * You are requested to use RoHS compliant parts for maintenance or repair.
  • Page 2 Effective models This service manual is effective following models. Model name Product code Voltage and Frequency MDF-C2156VAN 823 189 82 220V 50Hz 823 189 83 220V 60Hz 823 189 84 230/240V 50Hz 823 189 87 220V 60Hz MDF-C2156VANC 823 189 86...
  • Page 3 Contents P a g e F e a t u r e s - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 S p e c i f i c a t i o n s - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - S t r u c t u r a l s p e c i f i c a t i o n s...
  • Page 4 Features The chest type -150 VIP series freezer has large effective capacity, 231L. Safety storage and security New double door gasket to prevent heat leakage. New VIP+ is adopted for insulation makes reduction of power consumption. Notice of failure prediction by additional new status function. Recording of chamber temperature and outer door open.

  • Page 5: Specifications

    Specifications Structural specifications Item MDF-C2156VAN MDF-C2156VANC Name Ultra-Low Temperature Freezer External dimensions W1730 × D765 × H1010 (mm) Internal dimensions W760 × D495 × H615 (mm) Effective capacity 231 L Exterior Painted steel Interior Aluminum plate Outer lid Painted steel...
  • Page 6 Control specifications Item MDF-C2156VAN MDF-C2156VANC Cooling performance Center of the chamber; -150 AT30 , No load Temp. controller Micro-processor control system Setting range; -125 -155 Unit;1 Non-volatile memory Temp. sensor Platinum resistance; Pt.1000 Temp. display Digital display Setting range: +5 ~+20 (Initial;...
  • Page 7 Item MDF-C2156VAN MDF-C2156VANC When ambient temperature is higher than approx. 35 or lower than approx. 0 , ‘Ambient temp is abnormal ‘ is displayed on LCD. Status monitor function When power supply voltage is lower than approx.170V, ‘The power supply is abnormal’ is displayed on LCD.
  • Page 8 Performance specifications Cooling performance Center of the chamber: -150 AT30 , no load Temp. control range -125 -150 AT30 , no load 220VAC, 50Hz 220VAC, 60Hz 230VAC, 50Hz 240VAC, 50Hz Rated power consumption 1550W 1700W 1550W 1600W Noise level 51 dB (A) (background noise; 20dB) Maximum pressure 3085 kPa Usable conditions...
  • Page 9 Dimensions...

  • Page 10: Cooling Unit Parts

    Cooling unit parts <MDF-C2156VAN/VANC> Specifications Item H side L side Compressor 220V, 60Hz Type: KS370J1NS-7A Compressor code: 7FB-0-M101-001-06 220V, 50Hz Type: KS370J1NS-4A Compressor code: 7FB-0-M101-001-04 230/240V, 50Hz Type: KS370J1NS-4A1 Compressor code: 7FB-0-M101-001-05 Ze-NIUS32SA Ze-NIUS32SA Refrigerant oil Charged q’ty: 850cc Charged q’ty: 850cc...
  • Page 11 Refrigeration circuits...
  • Page 12 Refrigeration circuit welding points <Pipe layout>...
  • Page 13 <Unit base Ass’y> Pressure SW Ex. tank (L) Condenser Ass’y Compressor (L) Compressor(H) Capillary (H) Oil separator...
  • Page 14 Components on PCB...
  • Page 15 Electric parts MDF-C2156VAN/2156VANC 220V, 60Hz 220V, 50Hz 230/240V, 50Hz Compressor (H), (L) Type KS370J1NS-7A KS370J1NS-4A KS370J1NS-4A1 Parts code 7FB 0 M101 001 06 7FB 0 M101 001 04 7FB 0 M101 001 05 Rated voltage 220V, 60Hz 220/230V, 50Hz 230/240V, 50Hz Winding resistance C-S) 1.64...
  • Page 16 MDF-C2156VAN/2156VANC 220V, 60Hz 220V, 50Hz 230/240V, 50Hz Relay Type G4F-1123T G4F-1123T G4F-1123T Rated voltage 1C, 15A, 24VDC 1C, 15A, 24VDC 1C, 15A, 24VDC Parts code 624 001 4586 624 001 4586 924 001 4587 Power transformer Type ATR-K285T ATR-K285T ATR-K285T...
  • Page 17 Specification of sensor 1. Following shows temperature and resistance values in thermistor sensor (502AT-1). 154.5 71.80 35.65 13.29 145.9 68.15 33.99 10.80 137.8 64.71 32.43 8.84 130.2 61.48 30.92 7.20 123.1 58.43 29.50 6.01 116.5 55.55 28.14 5.00 110.2 52.84 26.87 4.17 104.4...
  • Page 18 2. Following shows temperature and resistance values in temp. sensor (Pt1000 ). 1000.0 1003.8 1007.6 1011.4 1015.2 1019.0 1022.8 1026.6 1030.4 1034.2 1038.0 1041.8 1045.6 1049.4 1053.2 1057.0 1060.8 1064.6 1068.4 1072.2 1076.0 1079.7 1083.5 1087.3 1091.1 1094.9 1098.7 1102.4 1106.2 1110.0 1113.8...
  • Page 19 Wiring Diagram <MDF-C2156VAN>...
  • Page 20 <MDF-C2156VANC>...
  • Page 21 Circuit Diagram...
  • Page 22 CR Circuit Diagram...

  • Page 23: Connections On Pcb

    Connections on PCB * Following are explanation of connections on the Main PCB. Connector Connects to Usage Voltage #1: 12V Switching power supply To supply the power to PCB. LCD module To connect with LCD. To connect with LCD contrast adjusting Control Board (CN5) knob.
  • Page 24 * Following are explanation of connectors on the Back-up PCB. Connector Connects to Usage Voltage Back-up sensor To detect internal temperature. #1-#2: Solenoid valve To supply the power to solenoid valve. #3-#4: Power transformer To supply the main power #1-#2: Test switch To test back-up system.

  • Page 25: Control Specifications

    Control specifications Temperature control range Settable temperature: -125 ~ -155 Internal temperature display range: -180 ~ +50 Setting method: In ‘TopScreen’, press MENU key and step into temperature setting mode with Shift key (upward, downward, rightward, leftward), then set your desired value with Figure Input key.
  • Page 26 High temp. alarm When internal temperature is higher than high temperature alarm setting value, alarm lamp flashes, intermittent buzzer beeps with 15 minutes of delay and remote alarm activates. Press BUZZER key to stop buzzer beeping. However, buzzer beeps again after Ring Back time is passed.
  • Page 27 Buzzer Auto-recovery (Ring Back function) You can stop buzzer beeping temporary with BUZZER key pressed. Remote alarm contact does not activate at the time. Ring Back setting time: 1 ~ 99 minutes * 0 minute = Buzzer does not recover if BUZZER key pressed once. ON/OFF control for Compressor H Start-up: Compressor H turns on with 2 minutes of delay after the power is supplied.
  • Page 28 Operation in power failure Unit checks power failure by the port for detecting power failure in every 0.42 seconds. Operation in power failure; All ports for controlling compressor, cap. tube heater, LCD back lamp, signal lines and digital lock turn off and unit operates to the mode in low power consumption. LCD is turned off and intermittent buzzer beeps.
  • Page 29 Operation of Control Panel Note: For the operations of ‘Basic Screen’, ‘Function’, ‘Key Lock function’, ‘Display of Log’, ‘Various Setting’, ‘Initialization’ ‘Setting of date, time, log interval’ and ‘Key Lock Password’, please refer to P.15~P.22 in the Instruction Manual. 1 Buzzer Buzzer for Temperature Alarm (Intermittent tone) Buzzer beeps intermittently after 15 minutes has passed since the unit was detected High Temp.
  • Page 30 Repower unit to set initial value. Model Code: Products model code Function # automatically reverts to ‘0’ 1: MDF-1156ATN after initialization done. 2: MDF-C2156VAN <Note> You should perform Temp. Function: Calibration because temp. calibration Indications of Key lock Password and Master ID value is also initialized.
  • Page 31 2-2. MENU/Tools – Select Tools Svc Maintenance function – Top Screen Select Tools (* Lock Setting is option) T o p S c r e e n S e l e c t T o o l s M D F - 2 1 5 6 M E N U M E N U T e m p...
  • Page 32 3-1 Digital Lock – Unlock Locked T o p S c r e e n S T A N D B Y Door is closed with locked (Solenoid OFF) T e m p - 1 5 0 A l a r m N o r m a l S t a t u s S t a n d - b y...
  • Page 33 3-2. Digital Lock - MENU/Tools - Lock Setting Top Screen Select Tools T o p S c r e e n S e l e c t T o o l s M D F - 2 1 5 6 M E N U M E N U T e m p...

  • Page 34: Parts Layout

    Parts layout Control panel Digital temperature indicator Communication box cover Back-up Remote alarm switch test switch Remote alarm terminal Back-up Analog output terminal switch AT sensor Temp. control knob Battery switch <Grille> Power supply switch Exhaust air vent...
  • Page 35 Control BOX Main PCB Electric BOX 12P terminal Noise filter Running capacitor Starting Capacitor Compressor H Fan motor Filter sensor Compressor L...
  • Page 36 Test Data...
  • Page 37 * Temperature uniformity for MDF-C2156VAN Conditions: (chamber air temp. 3, 50Hz , AT30 ) * Temperature variation for MDF-C2156VAN Conditions: (chamber air temp. 3, 50Hz, AT30 ) -150...

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