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Sanyo MDF-192 Instruction Manual

Ultra-low temperature freezer
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INSTRUCTION MANUAL
MDF-192
MDF-192AT
Ultra-Low Temperature Freezer
MDF-192AT

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  Summary of Contents for Sanyo MDF-192

  • Page 1 INSTRUCTION MANUAL MDF-192 MDF-192AT Ultra-Low Temperature Freezer MDF-192AT...
  • Page 2: Table Of Contents

    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.
  • Page 3: Precautions For Safe Operation

    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.
  • Page 4 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. Be sure to install the unit on a sturdy floor.
  • Page 5 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 vicinity of the equipment.
  • Page 6 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.
  • Page 7 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.
  • Page 8: Cautions For Usage

    CAUTIONS FOR USAGE ■ Always use a dedicated power source. The power source of this freezer is single phase and 100 V. 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. ■...
  • Page 9 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.
  • Page 10: Environmental Conditions

    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 5 C to 40 4. Maximum relative humidity 80% for temperature up to 31 C decreasing linearly to 50% relative humidity at 40 5.
  • Page 11: Freezer Components

    FREEZER COMPONENTS MDF-192...
  • Page 12 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.
  • Page 13: Control Panel

    FREEZER COMPONENTS Control panel 1. Power switch (POWER): Switch for ON/OFF off all functions except remote alarm and back-up system (MDF-192AT only). 2. Back-up switch (CO BACK UP)(MDF-192AT only): Switch for back-up system. Refer to page 21 for details. 3. Back-up test switch (TEST): Examine the functions of the back-up system. This switch allows liquid CO to spout under any circumstances.
  • Page 14: Installation

    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 -85 ■...
  • Page 15 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.
  • Page 16: Start-Up Of Unit

    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 (MDF-192AT only) are off. 2.
  • Page 17: Operating Instructions

    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 -70 Note: The unit is set at the factory that the chamber temperature is -85C. Table 1.
  • Page 18: Alarm Temperature Setting

    OPERATING INSTRUCTIONS Alarm temperature setting This unit is provided with the high temperature alarm. The setting of high temperature alarm is 10 C or C higher than the setting of chamber temperature. The procedure in table 2 shows the sequence to set the high temperature alarm at 15 C higher than the setting of chamber temperature.
  • Page 19: Setting Of Alarm Resume Time

    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.
  • Page 20: Remote Alarm Terminal

    The recommended contact capacity is between 2 A (DC 30V) and 0.1 mA (DC 1V). Contact output: between COM. and N.O. between COM. and N.C. At normal Open Close At abnormal Close Open Contact Sanyo sales agency when the installation of remote alarm device is desired.
  • Page 21: Alarms And Safety Functions

    OPERATING INSTRUCTIONS Alarms and safety functions This unit has the alarm and safety functions shown in table below, and also self diagnostic function. Alarm & safety Situation Indication Buzzer Safety operation When the chamber temp. is Intermittent High temperature Remote alarm approx.
  • Page 22 Rough scheme Liquid CO joint of the back-up system. For this setting, gas cylinder consult with a qualified gas supplier or Sanyo sales agency. 2. After setting the liquid CO gas cylinder, operate the freezer until the chamber temperature reaches the required level.
  • Page 23: Temperature Recorder At Type

    TEMPERATURE RECORDER [AT type] The figure below shows the description of a temperature recorder. The temperature recorder is provided with model MDF-192AT. 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.
  • Page 24 The battery for back-up system is discharged when the back-up switch is kept on. ■ The additional felt pen or recording paper is available from Sanyo sales agency. ■ To stop the temperature recorder, remove the cell from the recorder.
  • Page 25 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.
  • Page 26: Routine Maintenance

    ROUTINE MAINTENANCE Cleaning of condenser filter WARNING Do not touch the condenser when removing the condenser filter for cleaning. It may cause burn injury. This unit is provided with the filter check lamp. This lamp flickers and the buzzer sounds when the condenser filter is clogged.
  • Page 27: Troubleshooting

    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. ■...
  • Page 28: Disposal Of Unit

    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.
  • Page 29: Recycle Of Nickel-Cadmium Battery

    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. 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.
  • Page 30: Specifications

    Note Design or specifications will be subject to change without notice. The battery for power failure alarm is an article for consumption. It is recommended that the battery will be replaced about every 3 years. Contact Sanyo sales agency at the time of replacement of the battery for recycling.
  • Page 31: Performance

    PERFORMANCE Cooling performance Center point of freezing chamber; -85 C (Ambient temperature; 35 C, no load) Control range C to -85 Power source AC 110 V, AC 150 V, AC 220 V, AC 220 V, AC 230 V, AC 240 V, 60 Hz 60 Hz 50 Hz...
  • Page 32: Safety Check Sheet

    Procedure to be adhered to in order to reduce safety risk indicated in b) below. Date : Signature : Address, Division : Telephone : Product name : Model : Serial number : Date of Installation : Ultra-Low Temperature MDF-192 Freezer MDF-192AT Please decontaminate the unit yourself before calling the service engineer.
  • Page 33 7FB6P10137300 SANYO Electric Biomedical Co., Ltd. (10 May 2004) 10-15, Hongo 3-Chome Recycled paper Bunkyoku, Tokyo 113-8434 Japan Printed in Japan...

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Mdf-192at