Sanyo Freezer MDF-236 User's Manual
Contents
1. See page 13 Temperature recorder 10 Drain port The water accumulated on the bottom of the chamber can be drained through this port 11 Basket Used for storing the materials in the chamber 12 Remote alarm terminal on back side This is used to notice an alarm condition of the unit to remote location Refer to page 15 Remote alarm terminal 13 Battery switch This is a switch for power failure Always set the switch in ON position Be sure to turn off this switch to save the battery if the freezer is not in operating for the long period more than 1 month 14 Power switch This is for turning ON OFF the power to the unit ON l This has a function as an over current protection breaker 15 FREEZER COMPONENTS 7 8 d gt ALARM 3 5 TEMPERATURE C Tr 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 Defrost key DEF By pressing this key for 5 seconds the refrigerating operation is stopped Pressing this key again after defrosting leads resumption of the operation Note The refrigerating operation never resume automatically af2. a nonvolatile memory 18 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 Setting procedure for alarm resuming time change from 30 minutes to 20 minutes Description of operation Key operated Indication after operation E The current chamber temperature is f 1 displayed 30 The first digit is flashed 2 Press 2 key for 5 seconds 4 9 200 gt gt Pressing the key shifts the digit which can be set Set the figure to F25 with the 3 When pressed the figure of settable gt gt key and key A I digit increases Fes The current reset time is displayed l 4 Press SET key SET d The middle digit is flashed 030 Set the figure to 020 with the A When pressed the figure of settable 3 5 key A digit increases 020 Alarm temperature is memorized and 6 Press SET key SET the current chamber temperature is 130 displayed The settable alarm resume time are 10 20 30 40 50 or 60 minutes The buzzer and remote alarm would not
3. as suffocation may result o Remove dust and clean the power supply plug periodically The operation with a dusty plug may cause fire 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 Although the thermometer sometimes displays a temperature little bit higher than the actual temperature of the center part it gradually approaches the real temperature 3 An access port to take out the measuring cable in the case is provided on the back wall of the freezer Be sure to replace the cap and heat insulator after take out cable or the inside temperature cannot complete down and frost may accumulate outside the port surroundings 4 Do not use brushes acids benzine thinners powdered soap Polishing powders or hot water for cleaning as they can deteriorate the painted surfaces and parts made of plastic and rubber Be especially careful not to wipe plastic or rubber parts with volatile solvents such as benzine Wipe up the neutral detergents with a wet cloth when used 5 Frost will accumulate on the inside walls of the freezer during use Then remove the frost with the spatula provided or a simi
4. due to corrosion 5 Use dedicated power source as indicated the rating label attached to the unit Remove dust from the power supply plug before inserting a power source dusty plug or improper insertion may pose a hazard Use a power supply outlet with ground earth to prevent electric shock If the power supply outlet is not grounded it will be necessary to install a ground by qualified engineers S Never ground the unit through a gas pipe water main telephone line or lightning rod Such grounding may cause electric shock in the case of an incomplete circuit S Do not insert metal objects such as a pin or a wire into any vent gap or any outlet for inner air circulation This may cause electric shock or injury by accidental contact with moving parts S Never store volatile or flammable substances in this unit This may cause explosion or fire S Never store corrosive substances in this unit This may lead to damage to the inner components or electric parts o Use this unit in safe area when treating the poison harmful or radiate articles Improper use may cause bad effect on your health or environment 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 3 PRECAUTIONS FOR SAFE OPERAT
5. reset if the reset time is set in 000 The setting of alarm reset time cannot be changed during the defrosting The buzzer and remote alarm during power failure or alarm testing cannot be silenced The set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation In this case any setting before pressing SET key is not memorized 19 ROUTINE MAINTENANCE NWARNING 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 NCAUTION 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 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 If the unit is very dirty use a neutral detergent 3 After cleaning wipe away the cleaner completely with a cloth washed in clean water 4 Never pour water onto or into the unit Doing so can damage the electric insulation and cause failure The compressor and other mechanical parts are completely sealed This unit requires absolutely no lubrication Remove dust from
6. 2 p SET k SET The second digit is flashed ress ey 0 When pressed the settable 3 Press pp key gt gt 0 prey digit moves 4 Press key and scroll the figure A When pressed the figure of settable EBS to 5 digit increases Set temperature is memorized and the 5 Press SET key SET current chamber temperature is 200 displayed Note The temperature set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation Although the value of the chamber temperature setting can range between 18 C and 40 C the guaranteed temperature without load is 35 C at ambient temperature of 35 C Key lock function This unit is provided with the key lock function When the key lock is ON change of temperature setting through the key pad is not available The key lock is set in OFF at the factory Display Mode Function Key lock is OFF Enable to change of temperature setting Key lock is ON Disable to change of temperature setting Table 2 Procedure for key lock setting change from key lock OFF to key lock ON Description of operation Key operated Indication after operation The current chamber temperature is 1 displayed 30 The right digit is flashed 2 PressPP key for 5 seconds gt gt gone UD Press 2 key and scroll the figure A When pressed the figure of settable to 1 digit increases The key lock is set to 5 Pre
7. 6 Other supply voltage fluctuations as stated by the manufacturer 7 Transient overvoltages according to Installation Categories Overvoltage Categories Il For mains supply the minimum and normal category is 11 8 Pollution degree 2 in accordance with IEC 664 FREEZER COMPONENTS Le a II nil A FREEZER COMPONENTS 1 Door 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 180 with a key and the outer door is securely locked 6 Control panel Temperature set key buzzer key and alarm lamp etc are installed on the panel Digital temperature display is also provided on it See page 10 for the details 7 Caster 4 casters are provided to facilitate moving of the cabinet At the time of installation make sure that the front 2 casters are not contact with the floor by adjusting the leveling legs 8 Leveling foot 2 feet are provided on the front side right and left Keep the unit in level by adjusting these legs at the installation 9 Space for temperature recorder An automatic temperature recorder optional part can be attached here
8. ION WARNING Never splash water directly onto the unit as this may cause electric shock short circuit 4 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 e Disconnect the power supply plug if there is something wrong with the unit Continued abnormal operation may cause electric shock or fire If the unit is to be stored unused in unsupervised area for an extended period ensure that children do not have access and that doors cannot be closed completely The disposal of the unit should be accomplished by appropriate personnel Remove doors to prevent accidents such as suffocation o Prepare a safety check sheet when you request any repair or maintenance for the safety of service personnel NCAUTION 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 9 Connect the unit to 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 supply outlet grip the power supply plug the cord Pulling the cord may result in electric shock or fire by short circuit Never damage or break the power supply plug or co
9. SANYO INSTRUCTION MANUAL MDF 136 MDF 236 BIOMEDICAL FREEZER MDF 436 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 CAUTIONS FOR USAGE ENVIRONMENTAL CONDITIONS FREEZER COMPONENTS INSTALLATION OPTIONAL COMPONENTS START UP OF UNIT REMOTE ALARM TERMINAL TEMPERATURE SETTING ALARMS amp SAFETY FUNCTIONS SETTING OF ALARM RESUME TIME ROUTINE MAINTENANCE TROUBLESHOOTING DISPOSAL OF UNIT SPECIFICATIONS PERFORMANCE SAFETY CHECK SHEET 11 13 20 21 21 22 23 24 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 CAUTION Failure to observe CAUTION
10. gerator contents Yes No Risk of infection Yes No Risk of toxicity Yes No Risk from radioactive sources Yes No List all potentially hazardous materials that have been stored in this unit Notes Contamination of the unit Unit interior No contamination Decontaminated Contaminated Others Instructions for safe repair maintenance of the unit a The unit is safe to work on Yes No b There is some danger see below Yes No 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 Biomedical Freezer MDF 136 236 436 Please decontaminate the unit yourself before calling the service engineer 24 SANYO 7FB6P101279004 SANYO Electric Biomedical Co Ltd 5 5 Keihan Hondori 2 Chome Recycled paper CEM Moriguchi City Osaka 570 8677 Japan Printed in Japan
11. gt gt Pressing the key shifts the digit which can be set A When pressed the figure of settable key and amp key digit increases 005 Alarm temperature is memorized and 6 Press SET key SET the current chamber temperature is 30 displayed Table 4 Procedure for setting low temperature alarm Description of operation Key operated Indication after operation The current chamber temperature is displayed 30 The right digit is flashed 2 Press 2 key for 5 seconds 2 3 3 Press key and scroll the figure When pressed the figure of settable 2 digit increases The right digit is flashed 4 Press SET key SET Set the temperature 05 with the gt gt Pressing the key shifts the digit which can be set A A When pressed the figure of settable n bb key and key digit increases 05 Alarm temperature is memorized and 6 Press SET key SET the current chamber temperature is 90 displayed ALARMS amp 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 amp Safety Situation Indication Buzzer Safety operation High temperature alarm If the chamber temperature is higher than the temperature at which the high temperature alarm is activated ALARM lamp is flashed Temperature indicator is flashed Intermit
12. is also operated 209 is displayed on the control panel if the battery switch is OFF sure to turn on the battery switch 7 Now you can put articles into the freezer chamber gradually to minimize the temperature rise REMOTE ALARM TERMINAL NWARNING Always disconnect the power supply cord before connecting an alarm device to the remote alarm terminal The terminal of the remote alarm is installed at the back of the unit The alarm is outputted from this terminal Contact capacity is DC 30V 2 A Contact output At normal condition Open At abnormal condition Close Note Terminal The remote alarm is silenced by pressing the BUZZER key as the remote alarm is operated in conjunction with the buzzer except for the power failure alarm and alarm test The contact is closed in the case of power failure 5555 15 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 35 C Note The unit is set at the factory that the chamber temperature 30 C Table 1 Basic operation sequence Example Chamber temperature 35 C Description of operation Key operated Indication after operation The current chamber temperature is 1 Switch ON the freezer displayed eg
13. lar tool 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 Also do not make a hole in the wall for installation of attachments 6 The freezing temperature is different at each position inside the case of this freezer The set temperature represents the temperature at the center of the inside case The refrigerated articles put on the highest position part are refrigerated higher than the set temperature while those put on the lowest part are refrigerated lower 7 Do not put too many worm articles into a freezer compartment before enough operating Put items in a few at a time after the freezer compartment temperature has cooled to at least 20 C 8 In the case of high ambient temperature the cabinet front may heat up after the freezer starts to operate first However this does not denote a malfunction It is due to heater or hot gas piped around the unit frame to prevent frost and ice sticking around the cabinet 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 C 4 Maximum relative humidity 80 for temperature up to 31 C decreasing linearly to 50 relative humidity at 40 C 5 Mains supply voltage fluctuations not to exceed 10 of the nominal voltage
14. ng kit Fig 2 3 Connect the power cord of the recorder with the coupler in the unit compartment of the freezer 4 Remove the caps and insulation covering the access port on the chamber side and unit compartment side Fig 3 Then pass the recorder sensor through this port to go into the freezer chamber 5 Insert the recorder sensor into the tube enclosed with the mounting kit Front view 13 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 Sensor 8 After binding the lead wire on the back of the recorder and fix the recorder to the freezer with 4 screws removed in procedure 1 Fig 5 14 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 n 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
15. ns 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 The ambient temperature is too high The door is not closed firmly The large amount of frost is built on the chamber wall The air intake vent is blocked The set temperature is not inputted properly The freezer is in the direct sunlight There is any heating source near the freezer A rubber cap and insulation for the access port are not set correctly You put too many unfrozen articles into the freezer compartment When the unit does not accept changes of set point temperature 1 The key lock is set in ON mode Noise 1 The freezer is not installed on the sturdy floor 2 The freezer is not leveled with the leveling feet 3 There is anything touching the frame 4 The freezer is in the status immediately after start up The unit sometimes causes a noise when the chamber temperature is high due to the large load The noise gets less and less accompanying with the cooling of the chamber DISPOSAL OF UNIT NWARNING If the unit is to be stored unused in an unsupervised area for an extended period en
16. oors 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 Fixthe unit Two fixtures are attached to the rear of the frame Fix the frame to the wall with these fixtures and rope or chain Leveling foot 4 Ground earth NWARNING Use a power supply outlet with ground earth to prevent electric shock If the power supply outlet is not grounded it is necessary to install a ground by qualified engineers Never ground the unit through a gas pipe water main telephone line or lightning rod Such grounding may cause electric shock in the case of an incomplete circuit 12 OPTIONAL COMPONENTS NWARNING 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 Fig 1 2 Fix temperature recorder to the mounting by using 2 screws and fixture enclosed with the mounti
17. r is short circuited ALARM lamp is flashed E04 and chamber temp displayed alternately are Intermittent tone Remote alarm Normal operation Battery switch When SWiteh Shans E09 is flashed Intermittent tone Remote alarm check time of alarm test In the case of failure of compressor cooling fan motor Compressor temp In the case of abnormal high Remote alarm abnormality temperature due to the dust on the E10 is flashed Intermittent tone Compressor stops MDF 436 only condenser In the case of abnormal high ambient temperature running Note 1 The above power failure alarm is available when the battery switch is ON and the battery is charged If the battery switch is OFF or the battery is discharged only the remote alarm is activated 2 The power failure alarm can be kept about 12 hours with the battery charged completely 2 day operation of the freezer is needed to charge the battery full 3 The chamber temperature is displayed for 5 seconds if the BUZZER key is depressed during the power failure alarm After that the alarm stops and the alarm lamp blinks 4 The remote alarm is silenced by pressing BUZZER key as the remote alarm is operated in conjunction with the buzzer except for the power failure alarm 5 After power failure the operation is resumed with the condition before power failure since the temperature setting and alarm temperature setting are memorized in
18. rd Do not use the supply plug if its cord isloose This may cause fire or electric shock S Do not touch any electrical parts such as the power supply plug or any switches with a wet hand This may cause electric shock Do not put a container with water or heavy articles on the unit It may cause injury if the articles fall Current leakage or electric shock may be resulted form the deterioration of insulation by spilled water PRECAUTIONS FOR SAFE OPERATION NCAUTION 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 S 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 Also do not make a hole in the wall for installation of attachments Hold the handle when closing the door This will reduce the likelihood of a trapped finger Disconnect the power supply plug before moving the unit Take care not to damage the power cord damaged cord may cause electric shock or fire o Be careful not to tip over the unit during movement to prevent damage or injury Disconnect the power plug when the unit is not used for long periods Do not put the packing plastic bag within reach of children
19. signs could result in injury to personnel and damage to the unit and associated property Symbol shows this symbol means caution S this symbol means an action is prohibited Q this symbol means an instruction must be followed Be sure to keep this manual in a place accessible to users of this unit lt Label on the unit gt This mark is labeled the cover in which the electrical components of high voltage enclosed to prevent the electric shock The cover should be removed by a qualified engineer or a service personnel only PRECAUTIONS FOR SAFE OPERATION WARNING S Do not use the unit outdoors Current leakage or electric shock may result if the unit is exposed to rain water o Only qualified engineers or service personnel should install the unit The installation by unqualified personnel may cause electric shock or fire o 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 Never install the unit in a humid place or a place where it is likely to be splashed by water Deterioration of the insulation may result which could cause current leakage or electric shock Never install the unit a flammable volatile location This may cause explosion or fire S Never install the unit where acid or corrosive gases are present as current leakage or electric shock may result
20. ss SET key SET The current chamber temperature is 30 displayed 16 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 5 C and 15 C and 5 C and 15 C for low temperature alarm against the chamber temperature Note The temperature alarm is set at 10 C of the set temperature at the factory Display Mode Function High temperature alarm set See Table 5 on page 18 Fio Low temperature alarm set See Table 5 on page 18 As an example Table 3 shows the procedure to set the high temperature alarm so that the alarm can activate when the chamber temperature is 5 C higher than the set temperature Table 4 shows the procedure to set the low temperature alarm so that the alarm can activate when the chamber temperature is 5 C lower than the set temperature Table 3 Procedure for setting high temperature alarm Description of operation Key operated Indication after operation The current chamber temperature is In displayed 30 The first digit is flashed 2 Press key for 5 seconds 2 3 A 3 Press key and scroll the figure When pressed the figure of settable to 1 digit increases The right digit is flashed 4 Press SET key SET Set the temperature to 005 with the
21. sure 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 21 SPECIFICATIONS Polyethylene coated steel wire Fin amp tube wire amp tube type d tube t Condenser ire and tube type Fan motor 2W Aluminum tube on sheet type R 404A Thermister sensor Flash of digital indicator and alarm lamp Buzzer Remote alarm Automatic temperature recorder MTR G85 Optional component Mounting kit for automatic temperature recorder MDF S740 Baskets Note Design or specifications will be subject to change without notice 22 PERFORMANCE MDF 136 Cooling performance 35 C ambient temperature 35 C no load Temperature control range 20 C to 35 C Rated voltage AC 110 V AC 115 AC 220 V AC 220 to 240 V MDF 236 20 C to 35 C 36 dB A background noise 20 dB 2260 kPa MDF 436 Cooling performance 35 C ambient temperature 35 C no load Temperature control range 20 C to 35 C Rated voltage AC 110 V 115 V 220 V 220 to 240 V 2180 kPa Note The unit with CE mark complies with EC directives 89 336 EEC 93 68 EEC and 73 23 EEC 23 A 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 Refri
22. t in a reduction of the refrigeration capacity 3 location away from heat generating sources Avoid installing the unit near heat emitting appliances such as gas ranges or stoves Heat can cause inefficient refrigeration 4 A location with a sturdy and level floor N WARNING 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 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 5 location without flammable or corrosive gas N WARNING Never install the unit in a flammable or volatile location This may cause explosion or fire Never install the unit where acid or corrosive gases are present as current leakage or electric shock may result due to corrosion 6 A location not prone to high humidity N WARNING Do not use the unit outdoors Current leakage or electric shock may result if the unit is exposed to rain water Never install the unit in a humid place or a place where it is likely to be splashed by water Deterioration of the insulation may result which could cause current leakage or electric shock 11 INSTALLATION Installation 1 Remove the packaging materials and tapes Remove all transportation packaging materials and tapes Open the d
23. tent tone with 15 minutes delay Remote alarm with 15 minutes delay Low temperature alarm If the chamber temperature is lower than the temperature at which the low temperature alarm is activated ALARM lamp is flashed Temperature indicator is flashed Intermittent tone with 15 minutes delay Remote alarm with 15 minutes delay Power failure alarm Auto return In the case of power failure When power switch is turned OFF When the power to the unit is disconnected When there is no key pressing in each setting mode for 90 seconds ALARM lamp is flashed Chamber temperature is displayed Intermittent tone Remote alarm Finishing of each Setting mode Key lock Thermal sensor abnormality When the key lock is If the thermal sensor is disconnected ALARM lamp is flashed E01 and chamber temp displayed alternately are Intermittent tone Change of setting is disable Remote alarm Continuous running If the thermal sensor is short circuited ALARM lamp is flashed E02 and chamber temp displayed alternately are Intermittent tone Remote alarm Continuous running Thermal sensor abnormality MDF 436 only If the protective sensor for compressor is disconnected ALARM lamp is flashed E03 and chamber temp displayed alternately are Intermittent tone Remote alarm Normal operation If the protective sensor for compresso
24. ter defrosting 4 Set key SET Temperature setting mode is led by pressing this key Once the key is pressed the changeable digit is flashed Pressing this key again after setting desired temperature the setting is stored into computer memory If there is no key operation for 90 seconds during the temperature setting mode the temperature setting mode is invalid automatically See page 16 for the details 5 Digit shift key pp Pressing this key the setting mode causes the changeable digit to shift Key lock is available by pressing this key for more than 5 seconds in the temperature display mode Refer to page 16 for the key lock 6 Numerical value shift key 4 y Pressing this key in the setting mode causes the numerical value to shift ON OFF of key lock can be selected by pressing this key in the key lock mode 7 Alarm lamp ALARM This lamp is flashed when the audible alarm is activated 8 Digital temperature indicator This indicator shows the present chamber temperature or set temperature 10 INSTALLATION Installation site To operate this unit properly and to obtain maximum performance install the unit in a location with the following conditions 1 location not subjected to direct sunlight Installation in a location subjected to direct sunlight may lead to inadequate cooling 2 location with adequate ventilation Leave at least 10 cm around the unit for ventilation Poor ventilation will resul
25. the power supply plug periodically Defrosting This freezer is direct cooling type and the frost is built on the chamber wall during long term operation The excessive frost possibly make some gap between the cabinet and door gasket which may cause poor cooling Remove the frost inside the chamber once a month Following shows the procedure for removing the chamber frost 1 Temporarily move all the contents of freezer chamber to another freezer 2 Press DEF key for 5 seconds to stop the refrigerating operation While the refrigerating operation is stopped the current chamber temperature and dF is displayed on the control panel alternatively 3 After a several hours check visually that all defrost was removed completely 4 Remove the cap of drain port on the bottom of the chamber and drain the accumulated water 5 Wipe up the water remaining in the freezer chamber and then replace the cap of drain port 6 Press DEF key so that the refrigerating operation can be started 7 Once the chamber temperature has dropped to the desired temperature place the original contents back in the freezer chamber Note After the defrosting the refrigerating operation is never resumed automatically Make sure to press DEF key to start the freezer operation after defrosting While the freezer stops refrigerating operation for defrosting neither high temperature alarm nor low temperature alarm is effective TROUBLE SHOOTING If the unit malfunctio
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