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- Page 1 Operating Instructions Ultra-Low Temperature Freezer MDF-DU700VH MDF-DU500VH MDF-DU700VH Please read the operating instructions carefully before using this product, and keep the operating instructions for future use. See page 42 for model number.
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Page 3: Table Of Contents
CONTENTS INTRODUCTION P. 2 PRECAUTIONS FOR SAFE OPERATION P. 3 LABELS ON THE UNIT P. 7 SYMBOLS ON THE UNIT P. 7 ENVIRONMENTAL CONDITIONS P. 8 INTENDED USE AND PRECAUTIONS P. 8 FREEZER COMPONENTS P. 9 Control panel P.11 INSTALLATION SITE P.12 INSTALLATION P.13... -
Page 4: Introduction
INTRODUCTION ■ Read the operating instructions carefully before using the product and follow the instructions for safe operation. ■ PHC Corporation takes no responsibility for safety if the product is not used as intended or is used with any procedures other than those given in the operating instructions. ■... -
Page 5: Precautions For Safe Operation
PRECAUTIONS FOR SAFE OPERATION It is imperative that the user complies with the operating instructions 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 6 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.
- Page 7 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.
- Page 8 PRECAUTIONS FOR SAFE OPERATION CAUTION This unit must be plugged into a dedicated circuit protected by branch circuit breaker. Use a dedicated power source as indicated on the rating label attached to the unit. A multiple-tap may cause fire resulting from abnormal heating. Connect the power supply plug to the power source firmly after removing the dust on the plug.
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Page 9: Labels On The Unit
LABELS ON THE UNIT Warning safety labels applied to the ultra-low temperature freezer Users are advised to avoid accidents by carefully reading the warnings and cautions contained on warning labels at key locations on the interior and exterior of the ultra-low temperature freezer. Possible Warning/Caution Type Warning/Caution Label... -
Page 10: Environmental Conditions
ENVIRONMENTAL CONDITIONS This equipment is designed to be safe at least under the following conditions (based on the IEC 61010-1): ■ Indoor use; ■ Altitude up to 2000 m; ■ Ambient temperature 5 C to 40 ■ Maximum relative humidity 80% for temperature up to 31 C decreasing linearly to 50% relative humidity at 40 ■... -
Page 11: Freezer Components
FREEZER COMPONENTS 7 (inside) 11(inside) <MDF-DU700VH> Power cord Rear side... - Page 12 FREEZER COMPONENTS 1. Control panel (on the upper front of the outer door): The current chamber temperature or set temperature is displayed. See page 11 for details. 2. Outer door: To open the outer door, grip the outer door latch. On closing, lock the outer door latch completely.
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Page 13: Control Panel
FREEZER COMPONENTS Control panel 1. Digital temperature indicator: This indicator shows the present chamber temperature or set temperature. An error code will be displayed when the self diagnostic function detects any abnormality. 2. Status monitor lamp (STATUS): This lamp lights when environmental condition or status gets worse or the unit is out of normal operation. -
Page 14: Installation Site
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. -
Page 15: Installation
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. -
Page 16: Start-Up Of Unit
START-UP OF UNIT Follow the procedures for the initial and consequent operations of the unit. 1. Turn off the switch of the backup cooling kit (optional component) if it is installed. And check the battery switch is off. 2. Connect the power cord to the dedicated outlet having appropriate rating with the chamber empty, and turn on the power switch on the freezer. -
Page 17: Chamber Temperature Setting
CHAMBER TEMPERATURE SETTING 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 -75 Note: The chamber temperature is set to -80 C at the factory. -
Page 18: Alarm Temperature Setting
ALARM TEMPERATURE SETTING This unit is provided with the high and low temperature alarm and the temperature at which the alarm is activated is changeable. The setting range of alarm temperature is between the chamber temperature ±5 C and ±40 The following procedure shows the setting of alarm temperature according to the condition below: High temperature alarm: activates at the temperature 5 C higher than the set temperature... -
Page 19: Setting Of Alarm Resume Time
SETTING OF ALARM RESUME TIME The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) on the control panel during alarm condition. 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 5 below. -
Page 20: Setting Of Compressor Delay Time
SETTING OF COMPRESSOR DELAY TIME The delay time of compressor can be changed to reduce the load on the power line and to facilitate the start-up (reset) of the freezer after power failure. The example in the table 6 is based on the assumption that the delay time is changed to 4 minutes. Note: The delay time is set in 3 minutes at the factory. -
Page 21: Setting Of Door Alarm Delay Time
SETTING OF DOOR ALARM DELAY TIME The door check lamp lights when the outer door is open and the buzzer is activated with 2 minutes delay. The delay time is changeable. Follow the procedure in table 7 below to change the setting of delay time. The procedure assumes that the delay time is changed from 2 minutes to 3 minutes. -
Page 22: Remote Alarm Terminal
REMOTE ALARM TERMINAL The terminal of the remote alarm is installed at the lower right side of the unit. The alarm is outputted from this terminal. Contact capacity is DC 30 V, 2 A. Contact output: Terminal Normal status Abnormal status Between COM. -
Page 23: Monitor Of Freezer Status
MONITOR OF FREEZER STATUS The freezer has a function to monitor the running status of the unit as shown in table 8 below. This is to notice the running status getting worse (not failure). 1. The status monitor lamp (STATUS) is lit when one of the running status shown in table 8 is detected. 2. -
Page 24: Alarms & Safety Functions
ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 9, and also self diagnostic functions. Table 9 Alarms & safety functions Alarm & Safety Situation Indication Buzzer Safety operation If the chamber temperature is higher High temperature than the temperature at which the alarm... -
Page 25: Routine Maintenance
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. -
Page 26: Defrosting Of Inside Wall
ROUTINE MAINTENANCE Defrosting of inside wall The frost is built at the upper portion of the chamber and inner door. The excessive frost possibly make some gap between the cabinet and the magnetic door gasket, which may cause poor cooling. Remove the frost on the inner door with a scraper enclosed with the unit. -
Page 27: Cleaning Of Air Intake Port
ROUTINE MAINTENANCE Cleaning of air intake port To open the outer door, the cap on the left side is turned counterclockwise to take the air. Therefore, the frost is easy to be settled around the air intake port or in it. Clean the air intake port depending on the conditions below: Condition Remedy... -
Page 28: Replacement Of Wear-Out Parts
REPLACEMENT OF WEAR-OUT PARTS Replacement of battery for power failure alarm Replace the battery for power failure alarm every 3 years (when the battery check lamp lights) to ensure the alarm is operated in the event of power failure. Contact our sales representative or agent for the replacement of battery when the battery check lamp lights. -
Page 29: Troubleshooting
TROUBLE SHOOTING If the unit malfunctions, check out the following before calling for service. Malfunction Check/Remedy The chamber is not cooled □ The circuit breaker of power source is active. □ The voltage is too low (In this case, call an electrician). at all □... -
Page 30: 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 31 DISPOSAL OF UNIT (English) Disposal of Old Equipment and Batteries Only for European Union and countries with recycling systems These symbols on the products, packaging, and/or accompanying documents mean that used electrical and electronic products and batteries must not be mixed with general household waste. For proper treatment, recovery and recycling of old products and used batteries, please take them to applicable collection points in accordance with your national legislation.
- Page 32 DISPOSAL OF UNIT (French) L’élimination des équipements et des batteries usagés Applicable uniquement dans les pays membres de l’Union européenne et les pays disposant de systèmes de recyclage. Apposé sur le produit lui-même, sur son emballage, ou figurant dans la documentation qui l’accompagne, ce pictogramme indique que les piles, appareils électriques et électroniques usagés, doivent être séparées des ordures ménagères.
- Page 33 DISPOSAL OF UNIT (Portuguese) Eliminação de Equipamentos Usados e Baterias Apenas para a União Europeia e países com sistemas de reciclagem Estes símbolos nos produtos, embalagens, e/ou documentos que os acompanham indicam que os produtos elétricos e eletrónicos e as baterias usados não podem ser misturados com os resíduos urbanos indiferenciados.
- Page 34 DISPOSAL OF UNIT (Dutch) Het ontdoen van oude apparatuur en batterijen. Enkel voor de Europese Unie en landen met recycle systemen. Deze symbolen op de producten, verpakkingen en/of begeleidende documenten betekenen dat gebruikte elektrische en elektronische producten en batterijen niet samen mogen worden weggegooid met de rest van het huishoudelijk afval.
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Page 35: Temperature Recorder (Option)
TEMPERATURE RECORDER (OPTION) A temperature recorder is available for the freezer as an optional component. The type of the temperature recorder is MTR-G85C and MTR-85H. For the attachment, the recorder fixing and recorder sensor cover is necessary. Contact our sales representative or agent for the installation of a temperature recorder. - Page 36 TEMPERATURE RECORDER (OPTION) <Replacement of dry cell> Note : This temperature recorder is designed for the manganese dry cell and the alkaline dry cell. Do not use a rechargeable battery because the initial voltage of such battery is low. The rechargeable battery may cause the malfunction of recorder or shorten the Fig.
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Page 37: Setting Of Mtr-G85C
TEMPERATURE RECORDER (OPTION) Setting of MTR-G85C Chart guides Pen cap holder Back-up battery Pen arm Chart hub cover Pen lifter Recording paper Pen lifter stopper Ink pen Key lock Latch Pilot lamp Paper speed selector Fast feed button Power switch Zero adjustment screw Loading the ink pen: 1. - Page 38 TEMPERATURE RECORDER (OPTION) Starting recording and setting the time: Turn the power switch ON. The ink pen will move inward on the circular recording paper and stop temporarily at the 0% position (equivalent to the 40 C line). Then the ink Ink pen pen will move to the position which indicates the measured Hour...
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Page 39: Backup Cooling Kit (Option)
Following shows the time to keep chamber temperature at -70 C by using an optional backup cooling kit. Keep a liquefied CO cylinder at ambient temperature lower than 31 MDF-DU500VH MDF-DU700VH Ambient temperature ( • The above data is the experiment value which uses liquid CO 30L. (no-load) - Page 40 BACKUP COOLING KIT (OPTION) WARNING As with any equipment that uses CO gas, there is a likelihood of oxygen depletion in the vicinity of the equipment. It is important that you assess the work site to endure there is suitable and sufficient ventilation.
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Page 41: Small Inner Door (Option)
SMALL INNER DOOR (OPTION) For MDF-DU700VH, the small inner door (MDF-7ID) is available as an optional component. The small inner door is suitable for standard shelf location. For the installation, contact our sales representative or agent. Note: The cooling performance on the page 42 cannot be obtained when the small inner door (MDF-7ID) is installed. -
Page 42: Inventory Rack (Option)
Only inventory rack IR-220U can be applied when the small inner door (MDF-7ID) is IR-220U installed. IR-224U <MDF-DU700VH> Shelf support Shelf stopper No. 4 under second screw from the top (There is a mark which hollowed at the shelf support front side.) <Attachment of shelf stopper>... -
Page 43: Specifications
Interface board (MTR-480) Data acquisition system (MTR-5000) Backup cooling kit (CVK-UB2): LCO Small inner door (MDF-7ID for MDF-DU700VH) Design or specifications will be subject to change without notice. Refer to the updated catalog when ordering an optional component. -
Page 44: Performance
PERFORMANCE Product name Ultra-Low Temperature Freezer Ultra-Low Temperature Freezer MDF-DU700VH MDF-DU500VH Model number MDF-DU700VH-PE MDF-DU500VH-PE Cooling performance C at the center of the chamber (ambient temperature; 30 C, no load)* Temperature control range C to -86 C (ambient temperature; 30... -
Page 45: Safety Check Sheet
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. Freezer contents : □ □ Risk of infection: □ □ Risk of toxicity: □... - Page 48 Original Operating Instructions < EU countries only > 0123 Nijverheidsweg 120 4879 AZ Etten Leur, The Netherlands Printed in Japan 1-1-1 Sakada, Oizumi-machi, Ora-gun, Gunma 370-0596, Japan LDCL031800-0 S0418-0 2018.04.01 © PHC Corporation 2018...
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