Service Manual FILE No. Ultra-Low Temperature Freezer MDF-C8V 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. * You are requested to use lead-free solder.
Effective models This service manual is effective following models.
Contents Page Features Specifications --------------------------------------------------------------------------------------------------------- Structural specifications - Control specifications - Performance specifications Dimensions ----------------------------------------------------Refrigeration circuit diagram -----------------------------------Refrigeration circuit welding points ---------------------------Cooling unit parts ----------------------------------------------Components on PCB ------------
Features 䂓㩷 Space saving freezer for personal use - ‘Glass wool’ core is newly adopted for insulation - Width 550mm for minimal installation 䂓㩷 Suitable internal dimensions for inventory racks - 6 pcs of inventory rack (IR-207C) * * 5pcs of inventory rack when Back-up kit (CVK-UB4) installed 䂓㩷 Ensure preservation - Selectable high temperature alarm - Setting temperature can be kept by remote alarm terminal and non-volatile memory 䂓㩷 Easy maintenance - ‘Filter-less’ cooling circuit made clean up
Specifications ŶStructural specifications Item Specifications External dimensions W 550 × D 685 × H 945 mm Internal dimensions W 405 × D 490 × H 425 (mm) Effective capacity 84 L Exterior Painted steel Interior Painted steel Door Painted steel Insulation Cabinet; Rigid polyurethane foamed-in place and VIP(vacuum insulation panel) Door; Rigid polyurethane foamed-in place Door lock 1pc (also used as a latch) Caster 4pc, 2 leveling foot Access port 17mm, back side, bottom Compressor He
ŶControl specifications Item Cooling performance Temperature control range Temperature controller Temperature sensor Temperature display Temperature Alarm Filter Power failure Remote alarm Battery Control panel Key lock function Self diagnosis function Power switch Compressor protection Specifications -80 (1/2H temp, AT 30 , no load) -60 ~-80 (AT5~30 , no load) Microprocessor controlled system: Key-pad input Temperature set range: -55 ~-85 (1 increment) Set value kept in non-volatile memory Pt.
ŶPerformance specifications Cooling performance Temperature control range Rated voltage Rated frequency Rated power consumption Noise level Maximum pressure -80 (ambient temperature; 30 ,no load) -60 to -80 (ambient temperature; 30 ,no load) AC110V AC115V AC220V AC230V AC240V AC220V 60Hz 60Hz 50Hz 50Hz 50Hz 60Hz 295W 300W 310W 325W 350W 310W 49 dB A (background noise; 20 dB) 3.7 MPa Note) Specifications will be subject to change without notice.
Dimensions 㧨/&( % 8㧪 R 25 490 405 727 550 33 887 852 35 945 425 58 685 5
Refrigeration circuit diagram 6
Refrigeration circuit welding points 㪚㪉㪋 Place tofitfitAT ATsensor sensor Place to 䌃䌉 㪚㪐㩷 㪚㪏㩷 㪚㪈㪈㩷 㪚㪈㪇㩷 㪚㪈㩷 㪚㪈㪊㩷 㪚㪈㪉㩷 㪚㪈㪌㩷 㪚㪈㪋㩷 䌆䌂 㪚㪉㩷 㪚㪊㩷 㪚㪈㪎㩷 㪚㪈㪍㩷 㪚㪋㩷 㪚㪈㪐㩷 㪚㪈㪏㩷 㪚㪌㩷 䌐䋳 㪚㪉㪈㩷 㪚㪉㪇㩷 㪚㪍㩷 㪚㪉㪊㩷 㪚㪉㪉㩷 㪚㪎㩷 䌐䋱 䌆䌁 䌅䌘䌉 䌔䋲 䌔䋱 䌔䋳 䌁䌏 䌔䌚㩷 䌄䌄 䌄䌉㩷 䌄䌚㩷 䌁䌉 䌇䌉 䌐䋲 Ex. tank 䌃䌁㩷 Ex.
Cooling unit parts Item Compressor 115V, 60Hz 220/230/240V,50Hz Refrigerant oil Cooling system Condenser Type Condenser Pre-condenser Frame pipe Evaporator Type Capillary tube Resistance (PSI kg/cm2) Length (mm) Outer diameter (mm) Refrigerant Dryer Condensing fan Condensing fan motor Specifications Type: C-2SN400L2W Compressor code: 807 780 22 Type: C-2SN400L5W Compressor code: 807 780 25 Ze-NIUS32SA Charged q’ty: 280cc Forced air cooling Finless tube Cascade condenser 8 columns x 2 lines Coil p
Components on PCB 9
Electrical Parts MDF-C8V Compressor Starting relay Overload relay Starting capacitor Running capacitor Condensing fan motor Temp. control relay Fan relay Switching power supply Breaker switch Temperature sensor Compressor sensor Battery switch Battery Type Compressor code Rated voltage (50/60Hz) Winding resistance C-S(Aux) C-R(Main) Type Pick up voltage Drop out voltage Parts code Type Action to the temp. (No current) Action to the current (AT25 ) Operation time Non-Action to the temp.
Specification of sensor Following shows the relation between temperatures of temp. sensor (Pt1000ȍ) and resistance value. Temperature ( ) Resistance (ȍ) Temperature ( ) Resistance (ȍ) -170 -160 -150 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 326.92 368.57 409.87 450.83 491.47 531.83 571.92 611.76 651.38 690.78 729.99 769.02 807.87 846.58 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 885.13 923.55 961.84 1000.0 1038.0 1076.0 1113.8 1151.4 1189.0 1226.4 1263.8 1301.0 1338.0 1375.
Wiring diagram 12
Circuit diagram 13
Connection on PCB Following is the explanation of connections on Main PCB. Connector Connects to Usage Voltage CN1 Switching power supply To supply the power to PCB CN2 MTR-480 To connect with interface CN3 Remote alarm terminal #1: COM. #2: N.O. #3: N.C. Output for remote alarm contact CN4 #1-#2: Temp. control relay #5-#6: Fan relay To control chamber temperature #1-#2:12V To conduct current to cap.
㩷 1. Control specification Key and Switch BUZZER : In alarm condition, buzzer stops sounding with this key pressed. Remote alarm output and alarm message would not be off. During the power failure (battery back-up), press the key to show the present temperature of PT sensor. ALARM TEST : With this key pressed to activate alarm test mode to be forcibly step into alarm condition (ALARM lamp blinks, intermittent buzzer beeps, digital LED goes off and remote alarm inputs). After approx.
B) Function mode Setting range Display range : 00~33 : 00~39 00, 04, 08, 13, 15, 16, 18, 19, 20, 26, 27, 31 and 33 are unavailable. Setting procedure : In PV display, keep pressing key over 5 seconds to enter function mode (F00 is displayed). Change the blinking 1st digit to desired function code with key and key. Press SET key to be function code available. If you press SET key after input digits among 00, 04, 08, 13, 15, 16, 18, 19, 20, 31 and 33, the display automatically reverts to PV.
7. Function mode F00 Automatically revert to PV display F01 SVH (high temp. alarm SV) setting F02 SVL (low temp. alarm SV) setting F03 Battery accumulating time display F04 Automatically revert to PV display F05 Compressor delay time setting F06 Service code input (code: 384) F07 * Temperature Zero Adjustment F08 * Automatically revert to PV display F09 * Factory test mode …… Unavailable F10 * Factory test mode …… Unavailable F11 * Factory test mode …… Unavailable F12 * Display of temperature of temp.
F04: Simply passing through if entered by mistake. Press SET key in “F04” displayed to revert to PV display. F05: Compressor is turned on with forcibly delayed (by minute increment) when the power retrieves from the power failure. Input “F05” and press SET key to display “002” (initial). Change the value in the range “002”~”015” with key and key. Press SET key to store the value and revert to PV display.
F16: Simply passing through if entered by mistake. Press SET key in “F16” displayed to revert to PV display. Buzzer tone is emitted if service code is not input in F06. F17: Non-volatile memory initialization, model code change Service code should be input in F06 prior to use this mode. Input F17 and press SET key to display “001”. Change the value with key and key. Press SET key to store and revert to PV display.
F25: Alarm auto recovery time setting Input F25 and press SET key to display “030” (initial). Change to the desired value with key and key. Press SET key to store the value and revert to PV display. 000: Auto recovery OFF 010: Recovers after 10min. passed 020: Recovers after 20min. passed 030: Recovers after 30min. passed (initial) 040: Recovers after 40min. passed 050: Recovers after 50min. passed 060: Recovers after 60min.
10. Remote alarm terminal In normal condition: Remote alarm contact: N.O. N.C. 㸣 㸣 In alarm condition & Remote alarm contact: N.C. N.O. power failure : 11. Sensor failure (1) Temp. sensor Open circuit: E01 and 50㷄 are displayed alternately, the buzzer beeps intermittently and remote alarm contact outputs. The compressor would be allowed to turn on. Press BUZZER key to stop the buzzer beeping.
13. Fan motor operation and compressor protection Fan motor operation : 1.When the temperature in Comp. sensor is lower than 20㷄; Fan motor turns off with the power supplied 㸢 Turns on when the temperature in Comp. sensor is higher than 80㷄 㸢 Turns off when the temperature in Comp. sensor is lower than 20㷄 㸢 Turns on when the temperature in Comp.sensor is higher than 80㷄 2. When the temperature in Comp.
Parts layout Temp. sensor PT-1000> MDF-C8V Comp.
1. Catch the pick by screwdriver to pull the panel out. 2.Loosen tie band to set cables free. Pull Electric BOX out carefully.
Battery switch Ex.tank Temp.
Test Data Note: All data is the reference only.
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Collection and charge of refrigerant 1. Preparation a. * Refrigerant [MU-N48] * Connector for charging pipe (if necessary) 2. Procedures b. 1) Pull vacuum in refrigeration circuit Pull vacuum by pump for approx. 5 minuites. It is important to pull vacuum in the circuit to avoid possibility causing fire by residual refrigerant (R-600). 2) Connect charging pipe. Measure weight of tank before charge. (See picture c.) Connect tank with both vacuum pump and gauge manifold. (See picture d.
3) Charge of refrigerant Stop vacuum pump operation. Open the valve of tank to charge refrigerant with approx. 0.2~0.5 Mpa/G. 4) Pipe pinching in High pressure side Charge refrigerant until pressure is reached to 1.6MPa/G. Close the valve of tank. Hold charging pipe by pliers to pinch it off by pinch pliers. (See picture f.) e. f. Pinch pliers 5) Charge refrigerant in Low pressure side Open the valve again to charge refrigerant in Low pressure side. Charge until you can ensure pressure should be 0.
Instruction manual x This section is extracted and printed from Instruction Manual. x If you find out “Refer to page ƔƔ” in them, this page means not page in service manual but page in the lower corner of each page in the extract from Instruction manual. This page number is not corresponded with serial number in Service manual.
INSTRUCTION MANUAL MDF-C8V Ultra-Low Temperature Freezer 33
CONTENTS INTRODUCTION P. 2 PRECAUTIONS FOR SAFE OPERATION P. 3 ENVIRONMENTAL CONDITIONS P. 7 FREEZER COMPONENTS P. 8 Control panel P. 10 INSTALLATION SITE P. 11 INSTALLATION P. 12 START-UP OF UNIT P. 13 CHAMBER TEMPERATURE SETTING P. 14 KEY LOCK FUNCTION P. 14 ALARM TEMPERATURE SETTING P. 15 SETTING OF ALARM RESUME TIME P. 17 CHANAGE OF COMPRESSOR DELAY TIME P. 18 REMOTE ALARM TERMINAL P. 19 ALARMS & SAFETY FUNCTIONS P. 20 ROUTINE MAINTENANCE Cleaning of cabinet P.
INTRODUCTION Ŷ Read this manual carefully before using the appliance and follow the instructions for safety operation. Ŷ Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or used by any procedures other than those mentioned in this manual. Ŷ Keep this manual in an adequate place to refer to it as necessary. Ŷ The contents of the manual will be subjected to change without notice due to the improvement of performance or functions.
PRECAUTIONS FOR SAFE OPERATION It is imperative that the user complies with this manual as it contains important safety advice. Items and procedures are described so that you can use this unit correctly and safely. If the precautions advised are followed, this will prevent possible injury to the user and any other person. Precautions are illustrated in the following way: WARNING Failure to observe WARNING signs could result in a hazard to personnel possibly resulting in serious injury or death.
PRECAUTIONS FOR SAFE OPERATION WARNING Do not use the unit outdoors. Current leakage or electric shock may result if the unit is exposed to rain water. Only qualified engineers or service personnel should install the unit. unqualified personnel may cause electric shock or fire. The installation by Install the unit on a sturdy floor and take an adequate precaution to prevent the unit from turning over.
PRECAUTIONS FOR SAFE OPERATION WARNING Ensure you do not inhale or consume medication or aerosols from around the unit at the time of maintenance. These may be harmful to your health. Never splash water directly onto the unit as this may cause electric shock or short circuit. Never put containers with liquid on the unit as this may cause electric shock or short circuit when the liquid is spilled. Never bind, process, or step on the power supply cord, or never damage or break the power supply plug.
PRECAUTIONS FOR SAFE OPERATION CAUTION Use a dedicated power source (a dedicated circuit with a breaker) as indicated on the rating label attached to the unit. A branched circuit may cause fire resulting from abnormal heating. Connect the power supply plug to the power source firmly after removing the dust on the plug. A dusty plug or improper insertion may cause a heat or ignition. Never store corrosive substances such as acid or alkali in this unit if the container cannot be sealed.
ENVIRONMENTAL CONDITIONS This equipment is designed to be safe at least under the following conditions (based on the IEC 1010-1): Ŷ Indoor use; Ŷ Altitude up to 2000 m; Ŷ Ambient temperature 5oC to 40oC Ŷ Maximum relative humidity 80% for temperature up to 31oC decreasing linearly to 50% relative humidity at 40oC; Ŷ Mains supply voltage fluctuations not to exceed 㫧10% of the nominal voltage; Ŷ Other supply voltage fluctuations as stated by the manufacturer; Ŷ Transient overvoltages according to Installation
FREEZER COMPONENTS 1 2 3 4 5 10 13 6 7 8 9 5 12 11 41 8
FREEZER COMPONENTS 1. Lock: By turning to 180 degree to clockwise with a key, the door can be locked. 2. Door: Top hinged type. To open the door, grip the handle. 3. Magnetic door gasket: Seals the door and prevents leakage of cold air. 4. Inner lid: Serves as a means of reducing cold air leakage when the door is open. Remove the frost regularly. 5. Access port: Located on the back side and bottom. These are used for leading the measuring cable from the freezing chamber to the outside.
FREEZER COMPONENTS Control panel 5 1 7 8 6 2 3 4 1. Alarm buzzer stop key (BUZZER): To silence the audible alarm, press this key. The alarm during the alarm test cannot be silenced by pressing this key. See page 17 “Setting of alarm resume time” for the details. 2. Set key (SET): Temperature setting mode is led by pressing this key and the changeable digit is flashed. By pressing this key again, the setting is memorized.
INSTALLATION SITE To operate this unit properly and to obtain maximum performance, install the unit in a location with the following conditions: Ŷ A location not subjected to direct sunlight Do not install the unit under direct sunlight. Installation in a location subjected to direct sunlight cannot obtain the intended performance. Ŷ A location with adequate ventilation Leave at least 10 cm around the unit for ventilation.
INSTALLATION 1. Removing the packaging materials and tapes Remove all transportation packaging materials and tapes. Open the doors and ventilate the unit. If the outside panels are dirty, clean them with a diluted neutral dishwashing detergent. (Undiluted detergent can damage the plastic components. For the dilution, refer to the instruction of the detergent.) After the cleaning with the diluted detergent, always wipe it off with a wet cloth. Then wipe off the panels with a dry cloth. 2.
START-UP OF UNIT Follow the procedures for the initial and consequent operations of the unit. 1. Connect the power cord to the dedicated outlet having appropriate rating with the chamber empty. 2. Turn off the power switch of the back-up system (optional component) if it is installed. 3. Check that the battery switch is ON. 4. Set the chamber temperature to the desired temperature. 5. Allow the chamber temperature to fall to the desired temperature.
CHAMBER TEMPERATURE SETTING Table 1 shows the basic procedure for setting the chamber temperature. Perform key operations in the sequence indicated in the table. The example in the table is based on the assumption that the desired temperature is -75oC. Note: The chamber temperature is set to -80oC at the factory. Table 1 Basic operation sequence (Example: Chamber temperature -75oC) Description of operation Key operated 1 Connect the power cord to the dedicated outlet.
ALARM TEMPERATURE SETTING This unit is provided with the high and low temperature alarm and the temperature at which the alarm is activated is changeable.
ALARM TEMPERATURE SETTING Table 4 Procedure for setting low temperature alarm Description of operation Key operated ---- Indication after operation The current chamber temperature is displayed. 1 ----- 2 Press numerical value shift key for 5 seconds. The right digit is flashed. 3 Press numerical value shift key and scroll the figure to 2. When pressed, the figure of settable digit increases. 4 Press set key. 5 Set the temperature to -05 with the digit key and numerical value shift key.
SETTING OF ALARM RESUME TIME The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) key on the control panel during alarm condition (The remote alarm is not silenced). The buzzer will be activated again after certain suspension if the alarm condition is continued. The suspension time can be set by following the procedure shown in the Table 5 below. The example in the table is based on the assumption that the desired duration is 20 minutes.
CHANGE OF COMPRESSOR DELAY TIME The delay time of the compressor can be changed to reduce the load on the power line and to facilitate the start-up (reset) of the freezer after power failure. The example in the table is based on the assumption that the delay time is changed to 4 minutes. The delay time is set in 2 minutes at the factory. Note: Ŷ The setting range for delay time is between 2 and 15 minutes.
REMOTE ALARM TERMINAL WARNING Always disconnect the power supply cord before connecting an alarm device to the remote alarm terminal. The terminal of the remote alarm is installed at the back of the unit. The alarm is generated from this terminal. The contact capacity is DC 30 V, 2 A. Contact output: Between COM and N.O. Between COM and N.C.
ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions. Table 7 Alarms and safety functions Alarm & Safety High temperature alarm Low temperature alarm Power failure alarm Situation Indication Buzzer If the chamber temperature is higher Alarm lamp is flashed. Intermittent tone than the temperature at which the Temperature indicator is with 15 minutes high temperature alarm is activated. flashed. delay.
ROUTINE MAINTENANCE WARNING Always disconnect the power supply to the unit prior to any repair or maintenance of the unit in order to prevent electric shock or injury. Ensure you do not inhale or consume medication or aerosols from around the unit at the time of maintenance. These may be harmful to your health. Cleaning of cabinet Ŷ Clean the unit once a month. Regular cleaning keeps the unit looking new.
ROUTINE MAINTENANCE Battery The battery for power failure alarm is an article for consumption. The battery life is approximately 3 years. The buzzer can not be activated at the power failure and the stored items may be influenced if the battery is left as it is for more than 3 years. It is recommended that the battery is replaced ahead of time. For the replacement of the battery, contact Sanyo sales representative or agent.
REPLACEMENT OF BATTERY Location of a nickel-metal-hydride battery This unit is provided a nickel-metal-hydride battery for the power failure warning device. The battery is located at the back of the control panel. (Fig. 1) The high voltage components are enclosed in the electrical box. The cover should be removed by a qualified engineer or a service personnel only to prevent the electric shock.. Removal of nickel-metal-hydride battery 1. Turn off the power switch and disconnect the power supply plug. 2.
TROUBLESHOOTING If the unit malfunctions, check out the following before calling for service. Malfunction The freezer does not run Check/Remedy Ŷ The power cord is not connected to the proper outlet. Ŷ The power source does not have enough capacity. Ŷ The power failure is occurred. Ŷ The circuit breaker of power source is active. Ŷ The fuse is blown. Note: Move the freezer contents to another freezer if the chamber temperature raise due to the freezer failure.
DISPOSAL OF UNIT WARNING If the unit is to be stored unused in an unsupervised area for an extended period ensure that children do not have access and doors cannot be closed completely. The disposal of the unit should be accomplished by appropriate personnel. Always remove doors to prevent accidents such as suffocation. Recycle of battery The unit contains a rechargeable battery. The battery is recyclable. At the end of it’s useful life, check with you local solid officials option or proper disposal.
DISPOSAL OF UNIT Note: This symbol mark and recycle system are applied only to EU countries and not applied to the countries in the other area of the world. Waste Electrical and Electronic Equipment (WEEE) Directive-2002/96/EC (English) Your SANYO product is designed and manufactured with high quality materials and components which can be recycled and reused. This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.
DISPOSAL OF UNIT (French) Votre produit Sanyo est conçu et fabriqué avec des matèriels et des composants de qualité supérieure qui peuvent être recyclés et réutilisés. Ce symbole signifie que les équipements électriques et électroniques en fin de vie doivent être éliminés séparément des ordures ménagères. Nous vous prions donc de confier cet équipement à votre centre local de collecte/recyclage.
DISPOSAL OF UNIT (Portuguese) O seu produto SANYO foi concebido e produzido com materiais e componentes de alta qualidade que podem ser reciclados e reutilizados. Este símbolo significa que o equipamento eléctrico e electrónico no final da sua vida útil deverá ser descartado separadamente do seu lixo doméstico. Por favor, entregue este equipamento no seu ponto local de recolha/reciclagem. Na União Europeia existem sistemas de recolha separados para produtos eléctricos e electrónicos usados.
DISPOSAL OF UNIT (Dutch) Sanyo producten zijn ontwikkeld en gefabriceerd uit eerste kwaliteit materialen, de onderdelen kunnen worden gerecycled en weer worden gebruikt. Het symbool betekent dat de elektrische en elektronische onderdelen wanneer deze vernietigd gaan worden , dit separaat gebeurt van het normale huisafval. Zorg ervoor dat het verwijderen van de apparatuur bij de lokaal erkende instanties gaat gebeuren.
TEMPERATURE RECORDER (OPTION) WARNING Always disconnect the power supply to the unit prior to attachment of a temperature recorder in order to prevent electric shock or injury. An automatic temperature recorders is available for the freezer as the optional component. The type of the recorder is MTR-85H or MTR-G85. For the attachment, optional component is necessary as follows.
TEMPERATURE RECORDER (OPTION) Installation of MTR-85H 1. Remove 4 screws (A, B, C, D) on the side of the front panel to take off the front panel. Then remove 4 screws on the cover for the recorder mounting space and take off the cover (Fig. 1). After removing the cover, replace 4 screws. Front panel A C D Cover B Fig. 1 2. As shown in Fig. 2, install the recorder to the front panel by using the fixture enclosed with the recorder and the mounting plate (MDF-S3085). Mounting plate 3.
TEMPERATURE RECORDER (OPTION) 6. Attach the sensor cover to the right side of the chamber with 2 screws on the chamber wall (Fig. 4) Fig. 4 7. Seal the access port on the outside with putty as shown in Fig. 5. Putty 8. Replace the front panel and fix it with 4 screws. 9. Operate the freezer until the chamber temperature gets to the set temperature. Check the recorded temperature and chamber temperature displayed on the control panel.
TEMPERATURE RECORDER (OPTION) Installation of MTR-G85 1. Remove 4 screws (A, B, C, D) on the side of the front panel to take off the front panel. Then remove 4 screws on the cover for the recorder mounting space and take off the cover (Fig. 1). Front panel A C 2. Fix the temperature recorder to the front panel with fixture and screws enclosed with the recorder. Note Before fixing the temperature recorder, connect the recorder connector with the connector on the right back side of the control panel (Fig.
TEMPERATURE RECORDER (OPTION) 6. Attach the sensor cover to the right side of the chamber with 2 screws on the chamber wall (Fig. 4) 7. Seal the access port on the outside with putty as shown in Fig. 5. 9. Replace the front panel and fix it with 4 screws. 10. Operate the freezer until the chamber temperature gets to the set temperature. Check the recorded temperature and chamber temperature displayed on the control panel.
BACK-UP SYSTEM (OPTION) This freezer can be provided with a back-up system (CVK-UB4) which is available as an optional component. For the installation, refer to the instruction manual enclosed with the system. 1 BACK UP STANDBY 2 4 5 3 BATTERY CVK-UB4 control panel CVK-UB4 switch box 1. Power switch (BACKUP) When turning on the system, the back-up standby lamp (green) is brightened. This means that the system is ready. To stop the operation of the system, turn off this switch. 2.
BACK-UP SYSTEM (OPTION) With the back-up system (CVK-UB4), the freezer prevents the chamber temperature from going up by injecting the liquid CO2 gas when the power supply is disconnected (power failure, disconnection of power cord, breaker OFF) or in the case of failure of freezer itself. The liquid CO2 gas is injected with the activation of solenoid valve energized by battery when the chamber temperature reaches the alarm temperature. Following shows the procedure for setting the back-up system. 1.
SPECIFICATIONS Name Ultra-Low Temperature Freezer Model MDF-C8V External dimensions W550 x D685 (+83)* x H945 (mm) Internal dimensions W405 x D490 x H425 (mm) Effective capacity 84 L Exterior Painted steel Interior Painted steel Door Painted steel Access port Insulation Diameter 17 mm, back side, bottom Cabinet; Rigid polyurethane foamed-in place and VIP(vacuum insulation panel) Door; Rigid polyurethane foamed-in place Compressor Hermetic rotary type, 400 W Evaporator Tube on sheet type
PERFORMANCE -80oC (ambient temperature; 30oC, no load) Cooling performance -60oC to -80oC (ambient temperature; 30oC, no load) Temperature control range Rated voltage AC 110 V AC 115 V AC 220 V AC 230V AC 240V AC 220V Rated frequency 60 Hz 60 Hz 50 Hz 50 Hz 50 Hz 60 Hz Rated power consumption 295 W 300 W 310 W 325 W 350 W 310 W Noise level 49 dB [A] (background noise; 20 dB) Maximum pressure 3.
CAUTION Please fill in this form before servicing. Hand over this form to the service engineer to keep for his and your safety. Safety check sheet 1. Freezer contents : Risk of infection: Risk of toxicity: Risk from radioactive sources: Yes Yes Yes Yes No No No No (List all potentially hazardous materials that have been stored in this unit.) Notes : 2. Contamination of the unit: Unit interior: No contamination: Decontaminated: Contaminated: Others: Yes Yes Yes Yes No No No No 3.
CVK-UB4 CVK-UB4(I) INSTRUCTION MANUAL Back-up System for Ultra-Low Temperature Freezer 73
CONTENTS INTRODUCTION P. 2 PRECAUTIONS FOR SAFE OPERATION P. 3 COMPONENTS LIST P. 5 INSTALLATION 1 Assembling of the solenoid valve P. 8 Installation of the door switch P. 9 installation of the back-up kit P.10 Wiring P.12 CONTROL PANEL P.13 TRIAL OPERATION P.14 Calibration P.14 SPECIFICATIONS P.15 PERFORMANCE P.
INTRODUCTION Ŷ Read this manual carefully before using the appliance and follow the instructions for safety operation. Ŷ Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or used by any procedures other than those mentioned in this manual. Ŷ Keep this manual in an adequate place to refer to it as necessary. Ŷ The contents of the manual will be subjected to change without notice due to the improvement of performance or functions.
PRECAUTIONS FOR SAFE OPERATION It is imperative that the user complies with this manual as it contains important safety advice. Items and procedures are described so that you can use this unit correctly and safely. If the precautions advised are followed, this will prevent possible injury to the user and any other person. Precautions are illustrated in the following way: WARNING Failure to observe WARNING signs could result in a hazard to personnel possibly resulting in serious injury or death.
PRECAUTIONS FOR SAFE OPERATION WARNING Only qualified engineers or service personnel should install this system. The installation by unqualified personnel may cause electric shock or fire. Turn off the all switches and disconnect the power supply to the ultra low temperature freezer prior to the attachment of the back-up system in order to prevent electric shock or injury. Never disassemble, repair, or modify the unit yourself.
COMPONENTS LIST Confirm that the accessories of the table 1 are gathered. Report it to the dealer or the sales if there is a problem in packing of the product. Table 1 No. 5 PARTS NAME Q’ TY APPEARANCE THE EXPLANATION OF THE USE 1 PLATE MTG A 1 The plate fixes a solenoid valve cover. 2 LCO2 SOLENOID VALVE ASS’Y 1 It is the solenoid valve of LCO2. (This is assembled by the setup.) 2-1 LCO2 SOLENOID VALVE 1 It is a part of the LCO2 solenoid valve assy.
COMPONENTS LIST The continuation of the table 1 No. PARTS NAME Q’ TY APPEARANCE THE EXPLANATION OF THE USE 9 LABEL 1 It is put near the connection place. 10 DOOR SWITCH ASS’Y 1 This assy connected a door switch and two indicator lamps (green and orange). 10-1 INDICATOR LAMP (GREEN) - It is the lamp turned on with a power switch of the back-up system. 䋨 It is attached.䋩 10-2 INDICATOR LAMP (ORANGE) - It is the lamp turned on when the battery of the backup system declines.
COMPONENTS LIST The continuation of the table 1 7 No. PARTS NAME Q’ TY APPEARANCE 20 WIRING ASS’Y BP 1 It is harness to install on the electric box of the freezer (option). 21 NYLON CLIP 6N 1 Wiring ass’y DS is fixed. 22 NYLON CLIP 7N 2 Wiring ass’y BP is fixed.
INSTALLATION Assembling of the solenoid valve 1. The joint nut on the outlet side of the CO2 solenoid valve is removed. The valve outlet pipe with the pipe insulation is inserted into the joint nut, and fastened in the joint. (Fig. 1) Fasten a joint part securely so that CO2 gas can not leak out. (Fig. 2). 2. Insulation is fixed with a SK band. (Two places) (Fig. 3). Valve outlet pipe 㶎 Pipe insulation LCO2 solenoid valve Outlet side Fig. 1 㶎 Joint nut Joint Insulation Valve outlet pipe Fig.
INSTALLATION Installation of the door switch 1.㩷 Spacer and a door switch mounting plate are fixed on the hole of the left side (upside) of the freezer with two screws E (M5 x 16 pan head). (Fig. 1) Screw D Shim for door switch Door switch Door switch cover Shim for door switch mounting plate Screw B 㪪㪺㫉㪼㫎㩷㪜㩷 Door switch plate mounting Fig. 1 2.
INSTALLATION Installation of the back-up kit 1.㩷 The slit (bottom right rear side) which freezer is being fitted up with, a rear cover, a sensor cover, the rubber cap of the access port and insulation inside the access port are taken out. 2. Wiring ass’y BP is passed through the nylon clip 7N, and fixed on the back of MDF-UBK (option) with two screws A (M4 x 10 C It is tight.). At this time, a wiring ass’y BP point is shown from the lower corner access port of MDF-UBK 150 mm. (Fig.
INSTALLATION 6. The sensor cover inside freezer chamber is removed, and the thermostat sensor part of the back-up system is inserted into the hole under freezer temperature style sensor. The hole of the neighborhood of the thermostat sensor part which inserted (A hole does not open an access port. Therefore, make a hole in the plus driver.) into freezer inside and the rear side is stopped with silicon.
INSTALLATION Wiring 1. Harness (a white connector) from the solenoid valve is connected to the connector of the upper same color of the back-up system. 2. It passes through the wiring ass’y DS (one white connector and two red connectors) from the door switch ass’y from the outside of the solenoid, and each upper of the back-up system ass’y is connected with the connector of the same color. 3.
CONTROL PANEL 1 BACK UP STANDBY 2 4 5 3 BATTERY Control panel for CVK-UB4 Door switch ass’y for CVK-UB4 1. Power switch of back-up system (BACKUP) When turning on the system, the back-up stand-by on the door switch ass’y is brightened. This means that the system is ready. When this switch is turned off, the operation of the back-up system stops, and a back-up stand-by lamp turns off the lights. . 2. Test switch (TEST) This button switch is for checking the operation of back-up system.
TRIAL OPERATION Following is the procedures for the trial operation of the back-up system. Read an instruction manual enclosed with a ultra-low temperature freezer carefully before the trial operation. 1. Check that the gas cylinder connect pipe is connected properly between the LCO2 solenoid valve and the gas cylinder. The connection should be done by qualified engineers or service personnel only. 2.
SPECIFICATIONS Name Back-up System for Ultra-Low Temperature Freezer Model CVK-UB4 CVK-UB4(I) Outer dimensions W286 x D87 x H520 mm Applicable model MDF-C8V Applied gas Liquid CO2 gas Temperature control Gas type thermostat Door switch Door operation-related ON/OFF Indicator Back-up switch-related ON/OFF Accessories Power source Mounting kit (except for gas cylinder) Mounting kit (except for gas cylinder) Tank connecting tube: mm size Tank connecting tube: inch size AC 115 V / AC 230 V (su
JK1659-150B 1
