INSTRUCTION MANUAL MDF-136 MDF-236 MDF-436 BIOMEDICAL FREEZER MDF-236
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. 6 ENVIRONMENTAL CONDITIONS P. 7 FREEZER COMPONENTS P. 8 INSTALLATION P. 11 OPTIONAL COMPONENTS P. 13 START-UP OF UNIT P. 15 REMOTE ALARM TERMINAL P. 15 TEMPERATURE SETTING P. 16 ALARMS & SAFETY FUNCTIONS P. 18 SETTING OF ALARM RESUME TIME P. 19 ROUTINE MAINTENANCE P. 20 TROUBLESHOOTING P. 21 DISPOSAL OF UNIT P. 21 SPECIFICATIONS P. 22 PERFORMANCE P. 23 SAFETY CHECK SHEET 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 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 Never splash water directly onto the unit as this may cause electric shock or short circuit. Never disassemble, repair, or modify the unit yourself. Any such work carried out by an unauthorized person may result in fire or injury due to a malfunction. Disconnect the power supply plug if there is something wrong with the unit. abnormal operation may cause electric shock or fire.
PRECAUTIONS FOR SAFE OPERATION CAUTION Do not climb onto the unit or do not put articles on the unit. This may cause injury by tipping or damage to the unit. 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. Do not defrost inside walls using a knife or ice pick. There are pipelines for cooling behind the walls. Be careful not to damage the lines as this could cause a breakdown.
CAUTIONS FOR USAGE 1. Sometimes the alarm may not operate at the time of first start-up. This does not mean malfunction. It is due to the complete discharge of incorporated battery. 2-day continuous operation of the freezer is necessary to charge the battery fully. 2. The digital thermometer of medical freezer is designed to display the temperature of the center part of the freezing compartment.
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 5 3 6 4 7 8 9 10 MDF-236 11 12 13 14 8
FREEZER COMPONENTS 1. Door: To open the door, grip the handle. 2. Handle: Always grip this handle to open and close the outer door. 3. Door gasket: This provides a tight door seal and prevents cold air leak. Keep clean. 4. Access port: This is used for leading the measuring cable from the freezing chamber to the outside. 5. Lock: Turn counterclockwise to 180o with a key and the outer door is securely locked. 6. Control panel: Temperature set key, buzzer key and alarm lamp etc.
FREEZER COMPONENTS Control panel and keypad 7 1 2 8 3 4 5 6 1. Alarm test key (ALARM TEST): Test key for alarm device. By pressing this key, the alarm lamp is flashed, remote alarm is activated and buzzer sound. This means all alarm function operate correctly. 2. Buzzer stop key (BUZZER): To silence the audible alarm, press this key. The remote alarm is also silenced by pressing this key. (The buzzer cannot be stopped during remote alarm testing.) 3.
INSTALLATION Installation site To operate this unit properly and to obtain maximum performance, install the unit in a location with the following conditions: 1. A location not subjected to direct sunlight Installation in a location subjected to direct sunlight may lead to inadequate cooling. 2. A location with adequate ventilation Leave at least 10 cm around the unit for ventilation. Poor ventilation will result in a reduction of the refrigeration capacity. 3.
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 neutral detergent and wipe it up with a wet cloth. 2. Adjust the leveling feet Extend the leveling feet by rotating them counterclockwise to contact them to the floor. Ensure the unit is level. 3. Fix the unit Two fixtures are attached to the rear of the frame.
OPTIONAL COMPONENTS Temperature recorder 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 this freezer as the optional component. The type of the recorder is MTR-G85. For the attachment, the mounting kit (MDF-S740) is necessary. Following shows the attachment procedure. 1. Remove four screws on the cover for the recorder mounting space and take off the cover.
OPTIONAL COMPONENTS 6. As shown in the Fig. 4, fix the recorder sensor on the chamber wall by using 2 clips with a 10mm spacer located between the wall and the clip. The clips and spacers are enclosed with the mounting kit. Spacer 7. Cover the gap of the access port on the chamber side completely by a silicon sealant after pushing the insulation into the gap. Clip Sensor Fig. 4 8.
START-UP OF UNIT Follow the procedures for the initial and consequent operations of the unit. 1. Turn the power switch ON with the chamber empty. 2. Turn ON the battery switch. 3. The alarm sometimes may operate. In this case, silence the alarm by pressing BUZZER key. 4. Set the chamber temperature to a desired value. 5. Allow the unit to achieve the desired chamber temperature. 6. Check that the alarm lamp is flashed and the buzzer is activated by pressing ALARM TEST key. The remote alarm is also operated.
TEMPERATURE SETTING Chamber temperature 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 -35oC. Note: The unit is set at the factory that the chamber temperature -30oC. Table 1.
TEMPERATURE SETTING Alarm temperature setting This unit is provided with both high and low temperature alarms. The temperature at which the alarm is activated may be changed. The available set range for high temperature alarm is between +5oC and +15oC, and -5oC and -15oC for low temperature alarm against the chamber temperature. Note: The temperature alarm is set at 10oC of the set temperature at the factory.
ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 5, and also self diagnostic functions. Table 5 Alarms and safety functions Alarm & Safety High temperature alarm Low temperature alarm Power failure alarm Auto-return Key lock Situation If the chamber temperature is higher than the temperature at which the high temperature alarm is activated. If the chamber temperature is lower than the temperature at which the low temperature alarm is activated.
SETTING OF ALARM RESUME TIME The alarm buzzer and remote alarm are silenced by pressing BUZZER key on the control panel during alarm condition. The buzzer and remote alarm 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 6 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 at the factory. Table 6.
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. CAUTION Always put on the dry gloves to protect the hands at the time of maintenance. No gloves may cause cut of the finger by the edge or corner. Cleaning of cabinet 1.
TROUBLE SHOOTING If the unit malfunctions, check out the following before calling for service. The chamber is not cooled at all 1. The circuit breaker of power source is active. 2. The voltage is too low. (In this case, call an electrician.) 3. The power switch is not ON. 4. The large amount of articles (load) is stored in the chamber at one time. 5. The freezer is in defrost condition. The cooling is poor 1. The ambient temperature is too high. 2. The door is not closed firmly. 3.
SPECIFICATIONS Name Model Biomedical Freezer MDF-136 MDF-236 MDF-436 External dimensions W640 x D687 x H881 (mm) W905 x D687 x H881 (mm) W1265 x D807 x H905 (mm) Internal dimensions W525 x D440 x H715 (mm) W790 x D440 x H715 (mm) W1140 x D550 x H735 (mm) Effective capacity 138 L 221 L 426 L Exterior Polyester finish baked on zinc galvanized steel Interior Colored aluminum plate Door Insulation Baskets Access port Polyester finish baked on zinc galvanized steel Rigid polyurethane foamed-in
PERFORMANCE MDF-136 Cooling performance -35oC (ambient temperature; 35oC, no load) -20oC to -35oC Temperature control range Rated voltage AC 110 V AC 115 V AC 220 V AC 220 to 240 V Rated frequency 60 Hz 60 Hz 60 Hz 50 Hz Rated power consumption 140 W 140 W 150 W 145 W Noise level 37 dB [A] (background noise; 20 dB) Maximum pressure 2570 kPa MDF-236 Cooling performance -35oC (ambient temperature; 35oC, no load) -20oC to -35oC Temperature control range Rated voltage AC 110 V AC 115 V
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.
SANYO Electric Biomedical Co., Ltd.
