INSTRUCTION MANUAL Ultra Low Temperature Freezer MDF-593C MDF-593C MDF-793C
Note: 1. No part of this manual may be reproduced in any form without the expressed written permission of SANYO. 2. The contents of this manual are subject to change without notice. 3. Please contact SANYO if any point in this manual is unclear or if there are any inaccuracies. SANYO Electric Biomedical Co., Ltd. All rights reserved. Printed in Japan. CONTENTS PRECAUTIONS FOR SAFE OPERATION P. 2 CAUTIONS FOR USAGE P. 7 ENVIRONMENTAL CONDITIONS P. 9 FREEZER COMPONENTS P. 10 INSTALLATION P.
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 Be sure to install the unit on a sturdy floor. If the floor is not strong enough or the installation site is not adequate, this may result in injury from the unit falling or tipping 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. As with any equipment that uses CO2 gas, there is a likelihood of oxygen depletion in the vicinity of the equipment. It is important that you assess the work site to ensure there is suitable and sufficient ventilation.
PRECAUTIONS FOR SAFE OPERATION CAUTION Select a level and sturdy floor for installation. This precaution will prevent the unit from tipping. Improper installation may result in water spillage or injury from the unit tipping over. Connect the unit to a power source as indicated on the rating label attached to the unit. Use of any other voltage or frequency other than that on the rating label may cause fire or electric shock.
PRECAUTIONS FOR SAFE OPERATION CAUTION Do not touch the condenser directly when the filter is removed for cleaning. by hot surface. This may cause injury Always disconnect the power supply plug before moving the unit. Take care not to damage the power cord. A damaged cord may cause electric shock or fire. Be careful not to tip over the unit during movement to prevent damage or injury. Always disconnect the power plug when the unit is not used for long periods.
CAUTIONS FOR USAGE ￭ Always use a dedicated power source. The power source of this freezer is single phase and local voltage. The power source should be the dedicated circuit with a dedicated breaker. Do not connect this freezer to the branch circuit for other electric appliances. ￭ Put on dry gloves when you take out refrigerated articles from the freezer. Handing frozen contents or the inside walls with naked hands may cause frostbite.
CAUTIONS FOR USAGE ￭ The top surface of the frame sometimes becomes hot during the initial operation or when operating in a hot environment. This is due to the hot gas circuit for preventing dew, and is not an indication of a malfunction. ￭ This unit is provided with the filter check lamp. If the filter check lamp is flashed, clean the condenser filter. Refer to page 25 “Cleaning of condenser filter”. A clogged filter may cause poor cooling and compressor trouble.
ENVIRONMENTAL CONDITIONS This equipment is designed to be safe at least under the following conditions (based on the IEC 1010-1): 1. Indoor use; 2. Altitude up to 2000 m; 3. Ambient temperature 5oC to 40oC 4. Maximum relative humidity 80% for temperature up to 31oC decreasing linearly to 50% relative humidity at 40oC; 5. Mains supply voltage fluctuations not to exceed ±10% of the nominal voltage; 6. Other supply voltage fluctuations as stated by the manufacturer; 7.
FREEZER COMPONENTS 1 2 13 14 3 4 8 5 12 10 11 16 9 6 15 7 MDF-593C 10
FREEZER COMPONENTS 1. Lock 2. Door: Hinged type. The door can be opened in any angle on the way to full open. 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 before it is accumulated too much. 5. Access port: Serves a means of leading the measuring cable from the freezing room to the outside. 6. Caster: 4 casters are provided. They make the moving of the unit easier. 7.
FREEZER COMPONENTS Control panel 10 12 11 9 1 5 6 2 3 7 8 4 1. Power switch (POWER): Power all functions except remote alarm and back-up system for AT type. 2. CO2 Back-up switch (CO2 BACK UP): MDF-593C is not equipped. MDF-793C is not equipped. 3. CO2 Back-up test switch (TEST): MDF-593C is not equipped. MDF-793C is not equipped. 4. Remote alarm switch (REMOTE ALARM): remote alarm, turn the switch to “ON”. This switch is for remote alarm. In case of operating 5. Temperature setting key.
Clean the condenser filter according to page 25 “Cleaning of condenser filter”. INSTALLATION Installation site To operate this unit properly and to obtain maximum performance, install the unit in a location with the following conditions: ￭ A location not subjected to direct sunlight The direct sunlight to the freezer causes too high temperature and the chamber temperature may not reach -85oC. ￭ A location with adequate ventilation Leave at least 10 cm around the unit for ventilation.
INSTALLATION Installation 1. Remove 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. Make sure that all the switches on the control panel, such as the power switch, the remote alarm switch, the back-up system switch are off. 2. Liquid CO2 gas cylinder is set at this time. 3. Shut the door and connect the power cable to the power supply after the inner lid is installed. 4. Turn on the power supply switch and the temperature is displayed on the digital indicator. 5.
OPERATING INSTRUCTIONS Temperature setting Table 1 shows the basic operation method. Perform key operations in the sequence indicated in the table. The example in the table is based on the assumption that the temperature is -70oC. Note: The unit is set at the factory that the chamber temperature is -85C. Table 1. Chamber temperature -70oC) Basic operation sequence (Example: Description of operation 1 Turn on the power switch. Press mode change key when 1 changing the set temperature during operation.
OPERATING INSTRUCTIONS Alarm temperature setting This unit is provided with the high temperature alarm. The setting of high temperature alarm is 10oC or 15oC higher than the setting of chamber temperature. The procedure in table 2 shows the sequence to set the high temperature alarm at 15oC higher than the setting of chamber temperature. Set the figure to 000 at step 5 when setting the high temperature alarm at 10oC higher than the setting of chamber temperature.
OPERATING INSTRUCTIONS Setting of alarm resume time The alarm buzzer is silenced by pressing BUZZER key on the control panel during alarm condition (Initial setting 100: 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 3 below. The example in the table is based on the assumption that the desired duration is 30 minutes.
OPERATING INSTRUCTIONS Alarm and safety functions This unit has the alarm and safety functions shown in table below, and also self diagnostic function. Table 4. Alarm and safety function Alarm & safety Situation High temperature alarm When the chamber temp. is approx. 10oC (or 15oC) higher than the set temp. Power failure alarm Filter check Auto-return At power failure When power cord is disconnected. When the condenser filter is clogged.
OPERATING INSTRUCTIONS Back-up system WARNING As with any equipment that uses CO2 gas, there is a likelihood of oxygen depletion in the vicinity of the equipment. It is important that you assess the work site to endure there is suitable and sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuring a safe environment must be considered. These may include atmosphere monitoring and warning devices.
TEMPERATURE RECORDER The figure below shows the description of a temperature recorder. Time Temperature Warning indicator Recording indicator Pen holder lever Door Cartridge Feeding of chart 1. Open the door and let down the lever of the penholder; the pen point is apart from the chart. (Fig. 1) 2. Pull the cartridge out of the mounted position. (Fig. 2) 3. Set a new chart in place on the rear bottom of the cartridge.
TEMPERATURE RECORDER Setting of back-up temperature 1. There is a red guide on the top of the temperature displayer. Adjust the guide with your finger to back-up temperature, at which temperature the auxiliary cooling system starts to operate. 2. Set at a temperature 15oC higher than that of the freezer compartment. Penholder Install a recording pen in the recording hand as shown in the figure. Make sure that the pen is completely inserted for accurate recording. The pen is packed together with the chart.
TEMPERATURE RECORDER When a 7day circular type recorder is installed, a slip chart recorder can not be attached. Follow the procedure bellow to attach a 7day circular chart recorder to the freezer. NOTE: Only a specified recorder is applicable to the freezer. For the selection of an applicable recorder, please consult with a sales shop 1. Make sure that all the switches including power supply are turned off. 2. Remove the side cover by loosening four screws. (Fig.1) 3.
TEMPERATURE RECORDER 8. Remove the sensor cover at the rear of the chamber wall. (Fig. 4) Fig. 4 9. Pass through the hole under the temperature control sensor. (Fig. 5) Tool for the hole: Screw driver (example) Hole depth: 135mm (5.3inch) Hole diameter: 13mm (0.5inch) 10. Route the recorder sensor into the chamber by sassing the hole. (Fig. 4) Fig. 5 11. Remove the sensor support and position the recorder sensor and then replace the stopper. (Fig. 4) 12.
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 1. Clean the unit once a month. Regular cleaning keeps the unit looking new. 2. Use a dry cloth to wipe off small amounts of dirt on the outside and inside of the unit and all accessories.
TROUBLE SHOOTING If the unit malfunctions, check out the following before calling for service, after transferring all the contents to another freezer No refrigeration ￭ The voltage is too low. (In this case, call an electrician.) ￭ The breaker is free. ￭ The fuse is blown. Sometimes the freezer is not cooled at all for about 5 minutes after starting-up. Poor refrigeration ￭ The ambient temperature is too high. ￭ The door is not shut tightly. ￭ The inner lid is not installed correctly.
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 NICKEL-CADMIUM 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. 廢電池 請回收 ＊Label indication is obliged to comply with Taiwanese battery regulation. Location of a nickel-cadmium battery This unit is provided a nickel-cadmium battery for the power failure alarm. The battery is located in the control box behind the control panel. Removal of nickel-cadmium battery 1.
SPECIFICATIONS Name Ultra-Low Temperature Freezer Model MDF-593C MDF-793C External dimensions W2010 x D770 x H1070 (mm) W2570 x D770 x H1070 (mm) Internal dimensions W1280 x D500x H762 (mm) W1840 x D500x H762 (mm) 487 L 701 L Effective capacity Exterior Baked on acrylic finish on galvanized steel Interior Stainless steel Door Baked on acrylic finish on galvanized steel Insulation Rigid polyurethane foamed-in place Compressor Motor for compressor Hermetic type Condenser High stage sid
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. Refrigerator contents : Risk of infection: Risk of toxicity: Risk from radioactive sources: □Yes □No □Yes □Yes □Yes □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 □No □Yes □Yes □Yes □No □No □No 3.
7FB6P10140700 SANYO Electric Biomedical Co., Ltd. (22 Feb.
