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INSTRUCTION MANUAL
MDF-593
MDF-593AT
MDF-793
Ultra Low Temperature Freezer
MDF-793AT
MDF-793AT
MDF-593AT
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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
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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
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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. The installation by unqualified personnel may cause electric shock or fire. 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 tippin
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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 CO gas, there is a likelihood of oxygen depletion in the 2 vicinity of the equipment. It is important that you assess the work site to ensure there is suitable and sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuri
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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. When removing the plug from the power sup
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PRECAUTIONS FOR SAFE OPERATION CAUTION Do not touch the condenser directly when the filter is removed for cleaning. This may cause injury by hot surface. 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.
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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. ￭ For AT type, turn OFF the back-up switch at the time of opening of the freezer door when a liquid CO 2 gas cylinder is connected to the back-up system. ￭ Put on dry gloves when you take out refrige
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CAUTIONS FOR USAGE ￭ This unit is provided with the filter check lamp. If the filter check lamp is flashed, clean the condenser filter. Refer to page 23 “Cleaning of condenser filter”. A clogged filter may cause poor cooling and compressor trouble. ￭ When connecting a liquid CO cylinder for the back-up system of AT type freezer, consult your dealer 2 of a neighboring engineering shop of high pressure gas. ￭ Leave the remote alarm switch “OFF” until the inside temperature of the
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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; o o 3. Ambient temperature 5 C to 40 C o 4. Maximum relative humidity 80% for temperature up to 31 C decreasing linearly to 50% relative o humidity at 40 C; 5. Mains supply voltage fluctuations not to exceed 10% of the nominal voltage; 6. Other supply voltage fluctuations as stated by the manufacture
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FREEZER COMPONENTS 1 2 13 14 3 4 8 5 12 10 11 9 6 15 7 MDF-593 10
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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
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FREEZER COMPONENTS Control panel 10 7 12 11 9 5 6 8 1 2 3 4 1. Power switch (POWER): Power all functions except remote alarm and back-up system for AT type. 2. CO Back-up switch (CO BACK UP): AT type only. 2 2 3. CO Back-up test switch (TEST) (AT types only): AT type only. 2 4. Remote alarm switch (REMOTE ALARM): This switch is for remote alarm. In case of operating remote alarm, turn the switch to “ON”. 5. Mode setting key. (PV/SV): This k
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Clean the condenser filter according to page 23 “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 o reach -85 C. ￭ A location with adequate ventilation Leave at least 10 cm around the unit for v
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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 pa
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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 (AT type only) are off. 2. Liquid CO gas cylinder for AT type is set at this time. 2 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
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OPERATING INSTRUCTIONS Temperature setting Table 1 shows the basic operation method. Perform key operations in the sequence indicated in the o table. The example in the table is based on the assumption that the temperature is -70 C. Note: The unit is set at the factory that the chamber temperature is -85C. o Table 1. Basic operation sequence (Example: Chamber temperature -70 C) Description of operation Key operated Indication after operation The current chamber temperat
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OPERATING INSTRUCTIONS Alarm temperature setting o This unit is provided with the high temperature alarm. The setting of high temperature alarm is 10 C or o 15 C (The setting value is 2 kinds.) higher than the setting of chamber temperature. The procedure in o table 2 shows the sequence to set the high temperature alarm at 15 C higher than the setting of chamber o temperature. Set the figure to 000 at step 5 when setting the high temperature alarm at 10 C higher than the settin
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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. No
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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 Indication Buzzer Safety operation Intermittent When the chamber temp. is High temperature tone with Remote alarm o o approx. 10 C (or 15 C) higher Alarm lamp blinks. alarm 12 with 12 min. delay than the set temp. min. delay At power failure Power failure Intermi
