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INSTRUCTION MANUAL
MDF-594C
MDF-793C
Ultra-Low Temperature Freezer
MDF-594C
27
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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 REMOTE ALARM TERMINAL P. 14 ALARM TEMPERATURE SETTING P. 15 SETTING OF ALARM RESUME TIME P. 16 ALARMS & SAFETY FUNCTIONS P. 16 ROUTINE MAINTENANCE Cleaning of cabinet P
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INTRODUCTION Read this manual carefully before using the appliance and follow the instructions for safety operation. 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. Keep this manual in an adequate place to refer to it as necessary. The contents of the manual will be subjected to change without notice due to the improvement of performance or functions. Con
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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 ser
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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 and take an adequate precaution to prevent the unit from turning over. If the floor is not strong enough or the installation site is not
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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. 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 dama
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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 can
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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): Indoor use; Altitude up to 2000 m; o o Ambient temperature 5 C to 40 C o Maximum relative humidity 80% for temperature up to 31 C decreasing linearly to 50% relative humidity o at 40 C; Mains supply voltage fluctuations not to exceed 10% of the nominal voltage; Other supply voltage fluctuations as stated by the manufacturer; Transien
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FREEZER COMPONENTS 1 2 13 14 3 4 8 5 12 10 11 9 6 15 7 16 MDF-594C 35 8
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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 8 5 10 9 7 3 4 6 1 2 1. Power switch (POWER): Power all functions except remote alarm and back-up system (Option). 2. Battery switch: It is the switch of the battery for the power failure alarm. Turn it on usually. Turn it off when you do not drive for a long time. (More than 1 month)MDF-793C is not equipped. 3. Temperature setting key. (PV/SV): This key has functions. PV: Present freezer compartment temperature is
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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 Do not install the unit under direct sunlight. Installation in a location subjected to direct sunlight cannot obtain the intended performance. A location with adequate ventilation Leave at least 10 cm around the unit for ventilation. Poor ventilation will result in a reduction of the perfor
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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 c
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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 battery switch, the back-up system switch (option) are off. 2. Liquid CO gas cylinder 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 switch and the temperature is displayed on the digital indicator. 5.
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CHAMBER 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. o Note: The unit is set at the factory that the chamber temperature is -80 C. o Table 1. Basic operation sequence (Example: Chamber temperature -70 C) Description of operation Key operated Indication after operation The current chamber temperature 1 Turn on the
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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 higher than the setting of chamber temperature. The procedure in table 2 shows the sequence to o set the high temperature alarm at 15 C higher than the setting of chamber temperature. Set the figure to o 000 at step 5 when setting the high temperature alarm at 10 C higher than the setting of chamber temperature. Note: o The alarm temperature i
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SETTING OF ALARM RESUME TIME The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) on the control panel during alarm. 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 20 minutes. Note: The duration is set in 30 minutes (Initial setting 130) at the factory.
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ALARMS & SAFETY FUNCTIONS Table 4. Alarm and safety function Alarm & safety Situation Indication Buzzer Safety operation When the condenser filter Intermittent Filter check Filter check lamp blinks. ----- is clogged. Tone. When there is no key Chamber temp. is Finishing of each Auto-return pressing in each setting ----- displayed. setting mode. mode for 90 seconds. Alarm lamp blinks. If the thermal sensor is o E01 and 50 C is disconnected. Remote alarm displayed alternately.
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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 • Clean the unit once a month. Regular cleaning keeps the unit looking new. • Use a dry cloth to wipe off small amounts of dirt on the outside and
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REPLACEMENT OF BATTERY 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.(Fig. 1) The high voltage components are enclosed in the control box. The cover should be removed by a qualified engineer or a service personnel only to prevent the electric shock.. Removal of nickel-cadmium battery 1. Turn off the power switch and battery switch and disconnect
