Phcbi MDF-DU703VH Operating Instructions Manual
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Phcbi MDF-DU703VH Operating Instructions Manual

Ultra-low temperature freezer
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Please read the operating instructions carefully before using this product, and keep the operating
instructions for future use.
See page 100 for all model numbers.
Operating Instructions
Ultra-Low Temperature Freezer
MDF-DU703VH 
MDF-DU503VH 
MDF-DU703VHA 
MDF-DU503VHA
MDF-DU703VH
 

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Summary of Contents for Phcbi MDF-DU703VH

  • Page 1 Operating Instructions Ultra-Low Temperature Freezer MDF-DU703VH  MDF-DU503VH  MDF-DU703VHA  MDF-DU503VHA   MDF-DU703VH Please read the operating instructions carefully before using this product, and keep the operating instructions for future use. See page 100 for all model numbers.

  • Page 2: Table Of Contents

    CONTENTS 1. BEFORE USING SAFETY PRECAUTIONS ......................5 SYMBOLS ON UNIT ......................... 9 FOR SAFELY STORING SAMPLES ..................10 About backup cooling system ....................10 In the event of emergency ....................11 INSTALLATION SITE ......................12 INSTALLATION ........................13 FREEZER COMPONENTS ..................... 14 Main body ..........................
  • Page 3 SCREEN LOCK ........................62 Setting screen lock ......................62 Operation when screen lock is ON ..................64 Turning OFF the screen lock setting ..................64 OTHER SETTINGS ......................... 66 Setting date and time ......................66 Setting brightness and sleep ....................67 Setting unit name .........................

  • Page 4: Before Using

    1. BEFORE USING 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: Safety Precautions

    1. BEFORE USING SAFETY PRECAUTIONS Be sure to observe the operating instructions as they contain important safety advice. For correct and safety use of the product, follow the precautions and procedures in this operating instructions carefully. Failure to do so could result in injury or damage to the product.
  • Page 6 SAFETY PRECAUTIONS   WARNING       Installation    Do not use the unit outdoors. Exposure to rain may cause an electric leakage and/or an electric shock.  Do not install the unit in a location where flammable or volatile substances are present.  ...
  • Page 7 1. BEFORE USING   WARNING         Power supply plug and cord    Never damage the power supply cord or power supply plug (by breaking, adapting, placing near a source of heat, bending with force, twisting, pulling, adding weight, or binding).
  • Page 8 SAFETY PRECAUTIONS   WARNING       When using the unit      Never put containers with liquid on top of the unit. This may cause an electric shock or short circuit if the liquid is spilled.  Never insert metal objects such as pins and wires into any vent, gap, or outlet on the  ...

  • Page 9: Symbols On Unit

    1. BEFORE USING   CAUTION          Do not touch stored samples in the chamber or inner walls of the chamber with bare hands. Frostbite can occur at low temperatures. Wear insulated gloves when reaching into the chamber.

  • Page 10: For Safely Storing Samples

    The following graphs show examples of the duration. [Example] Duration of time for which a full 30 kg liquid CO cylinder can keep the chamber at -70 °C (no load) MDF-DU703VH/VHA-PA MDF-DU503VH/VHA-PA Ambient temperature ( ° C) Ambient temperature ( °...

  • Page 11: In The Event Of Emergency

    To keep MDF-DU703VH/VHA (inner capacity: 729 L) to -70 °C, firstly, put at least 35 kg of dry ice into the chamber. Then, add 3.5 kg of dry ice every hour. Wrap dry ice with paper such as newspaper and put it on each shelf equally.

  • Page 12: Installation Site

    INSTALLATION SITE To run the freezer unit properly, the unit must be installed in a location which meets all the conditions described below. If the location does not meet these conditions, the specified performance of the unit may not be achieved or malfunctions and accidents may occur. ■...

  • Page 13: Installation

    Fig. 2 Preventing electric shock by earthing the unit MDF-DU503VH-PA MDF-DU503VHA-PA When installing the unit, be sure to earth (ground) it. Earthing MDF-DU703VH-PA MDF-DU703VHA-PA is necessary to prevent electric shock resulting from Plug: NEMA 6-15P  Plug: NEMA 5-15P deterioration of electrical insulations.

  • Page 14: Freezer Components

    FREEZER COMPONENTS Main body The model below shows MDF-DU703VH/VHA (MDF-DU503VH/VHA also has an equivalent structure). (Inside of the outer door)       Door gasket  Key slot (→ page 58)   Outer door Inner door   Space for temperature recorder (option)  ...
  • Page 15 1. BEFORE USING 1. Inner door latch: The inner door can be securely closed using this inner door latch. When closing the inner door, make sure to engage the latch. Otherwise, the samples in the chamber may be damaged due to the temperature changes in the chamber.

  • Page 16: Accessories

    FREEZER COMPONENTS Accessories Check that following accessories are included with this unit. If any accessories are missing, contact our sales representative or agent. Name Appearance Usage For opening the outer door manually in the 1 set event of a power failure (page 58). Scraper For removing frost in the chamber (page 90).

  • Page 17: Start-Up Procedure

    1. BEFORE USING START-UP PROCEDURE Follow the procedure below to start test run or start operation of this product. Check that the following switches at the lower right side of the Lower right side of the unit unit are turned off: power switch, battery switch for power failure Backup power switch* alarm, backup power switch (if the optional backup cooling system is installed).

  • Page 18: Operation During Power Failure

    START-UP PROCEDURE Operation during power failure When the battery switch for power failure alarm is ON, the unit behaves as follows even during a power failure. ● The power failure alarm activates (page 86).* Tap the Buzzer Stop button to silence the sound of the power failure alarm. If the ring back is turned ON, the audible alarm sounds again when a power failure still continues after ring back set time elapsed (page 60).

  • Page 19: Touch Panel Operation

    2. TOUCH PANEL OPERATION 2. TOUCH PANEL OPERATION USING THE TOUCH PANEL For controlling the freezer, the LCD touch panel is provided at the front of the freezer. Basic Operation Tap  Slide Long tap Lightly touch the screen with your With lightly touching the screen with Lightly touch the screen for a few finger and immediately release the...
  • Page 20 USING THE TOUCH PANEL Entering alphanumeric characters and symbols: Tap the alphanumeric input field. ►The alphanumeric input window is displayed. Alphanumeric input field [Uppercase letters, numbers] Tap the alphabetic keys, numeric keys, or symbol keys to enter alphanumeric characters and symbols. ►The input windows can be switched using the button.

  • Page 21: Other Operations

    2. TOUCH PANEL OPERATION Tap the ▲/▼ buttons to enter the values. [Date] Year/Month/Day   Note: The time is expressed using a 24-hour clock. Tap the OK button. [Date] Day/Month/Year [Time] Hour/Minute/Second   Other operations 1. Common button operation on the touch panel: Button Name/Details OK button...

  • Page 22: Home Screen

    HOME SCREEN The following screen is displayed on the LCD display after turning on the power switch for the freezer. This screen is called as “Home screen” and shows basic information about the status of the freezer. It will take about 20 seconds before the Home screen is displayed after turning on the power switch.
  • Page 23 2. TOUCH PANEL OPERATION Icon Name/Details Backup cooling icon This icon is displayed when the optional backup cooling system is installed. The icon is white when the backup power switch (BACKUP) is turned on. The icon turns orange when the BACKUP switch is turned off. Battery for power failure alarm icon The icon is white when the battery for power failure alarm is turned on.

  • Page 24: Sidebar Menu Buttons

    SIDEBAR MENU BUTTONS Using the buttons in the sidebar menu, you can switch the screens for setting values, referring to information of the freezer, or importing/exporting data. 1. Home button Tapping this button on the screens other than the Home screen returns to the Home screen.
  • Page 25 2. TOUCH PANEL OPERATION 4. Chart button Tapping this button displays the Chart screen where the charts of the chamber temperature log data and door opening log data can be shown. Also, such log data can be exported to a USB flash drive on the Chart screen (pages 76-78). (Not selected) (Selected) 5.

  • Page 26: Security Mode

    3. SECURITY MODE SETTING SECURITY MODE Introduction to the security mode This product can provide enhanced security when the operation mode called as “security mode” is set to “ON.” In the security mode: 1). The outer door can be automatically locked by the electric lock system. It can be unlocked using the face recognition function , passwords, or NFC authentication (when the optional NFC reader is installed).

  • Page 27: Setting The Security Mode To On

    3. SECURITY MODE Setting the security mode to ON Note: You cannot use the screen lock function (see page 62) and the security mode at a time. Before setting the security mode to ON, tun off the screen lock. Tap the Settings button in the sidebar menu and tap the Display button, and then slide the Screen Lock button to the left to turn off the screen lock function in the Display screen.
  • Page 28 SETTING SECURITY MODE When no accounts are created: When there is an administrator (Admin) account: Enter a user ID, user name, and password (see Log in to the freezer using a password or NFC pages 30 and 31), and then tap the Apply button. authentication (when the optional NFC reader is (Register an image for face recognition function and installed) (see pages 55 and 56).

  • Page 29: Setting The Security Mode To Off

    3. SECURITY MODE Setting the security mode to OFF To set the security mode to OFF, you must log in to the freezer as an administrator role. Tap the Settings button in the sidebar menu. ►The Settings screen is displayed. Tap the Security Settings button on the Settings screen.

  • Page 30: Account Management By Administrator

    ACCOUNT MANAGEMENT BY ADMINISTRATOR To use the freezer in the security mode, user accounts must be created to register users as administrators (Admin) or general users (User). As described on pages 27 and 28, the first user account (administrator) is created during the steps of setting the security mode to ON.
  • Page 31 3. SECURITY MODE Enter each item on the Account Creation screen. Details of entry Settable Item Details range Enter a user ID to be used to log in to the freezer in alphanumeric characters or symbols. Tap the input field and enter the 4 to 10 ID (mandatory).
  • Page 32 ACCOUNT MANAGEMENT BY ADMINISTRATOR Settable Item Details range An image used for face recognition function can be registered here (optional). Note: For security reasons, every user can register only their own image while they are logging into their account. Therefore, administrators cannot register other users’...
  • Page 33 3. SECURITY MODE (Optional) Face the camera (page 14) and check that you are in the middle of the frame by looking at the image on the left side of the window. Then tap the camera icon ) next to the image to take a picture. ►The picture taken is displayed on the Registered Image frame on the right side of the window.
  • Page 34 ACCOUNT MANAGEMENT BY ADMINISTRATOR Note: If the person in the picture is recognized as the same person who has been already registered, the following Information message is displayed. Tap the OK button and retry. * Proceed to step 10 if you do not register an NFC card or device for NFC authentication (when the optional NFC reader is installed).
  • Page 35 3. SECURITY MODE Note: ● If the card or NFC device has been already registered, the following Information message is displayed. Tap the OK button and register a different IC card or NFC device. After necessary information is entered, tap the Apply button. ►The values are saved and the screen returns to the Users screen.

  • Page 36: Viewing User Account List

    ACCOUNT MANAGEMENT BY ADMINISTRATOR Viewing user account list Administrator can view the list of all user accounts registered on the freezer. Tap the Settings button in the sidebar menu.   ►The Settings screen is displayed. Tap the Users button on the Settings screen. ►The Users screen is displayed.

  • Page 37: Changing User Account Data

    3. SECURITY MODE Changing user account data Administrators can change users’ account data except for user IDs and other users’ images. To change user account data, follow the steps below. Tap the Settings button in the sidebar menu.   ►The Settings screen is displayed. Tap the Users button on the Settings screen.
  • Page 38 ACCOUNT MANAGEMENT BY ADMINISTRATOR Item Details 2. Tap the Yes button. ►The registered image is deleted and the indication at the Registered Image item changes from “Registered” to “Not Registered.” Also, the Clear button changes to the Register button. Note: If you tap the No button, the screen returns to the Account Creation screen.
  • Page 39 3. SECURITY MODE Item Details 5. Tap the OK button. ►The indication at the Registered Image item changes from “Not Registered” to “Registered.” Also, the Register button changes to the Clear button. Note: If the person in the picture is recognized as the same person who has been already registered, Registered Image the following Information message is displayed.
  • Page 40 ACCOUNT MANAGEMENT BY ADMINISTRATOR Item Details Notes: ● If you tap the Cancel button without holding an IC card or NFC device over the reader, the screen returns to the Account Creation screen. ● If the card or NFC device has been already registered, following Information...

  • Page 41: Deleting A User Account

    3. SECURITY MODE Deleting a user account Administrator can delete user accounts by following the steps below. Tap the Settings button in the sidebar menu. ►The Settings screen is displayed. Tap the Users button on the Settings screen. ►The Users screen is displayed. Tap the user accounts that you want to delete (you can select multiple user accounts).

  • Page 42: Account Operation By General User

    ACCOUNT OPERATION BY GENERAL USER General users (User) can view and change their own user account information and register their image for face recognition function and an IC card/NFC device to be used for NFC authentication (when the optional NFC reader is installed). These operation can be performed while the security mode is set to ON and they are logged in to their account.
  • Page 43 3. SECURITY MODE Steps for registering an image used for face recognition Tap the Register button at the Registered Image item on the Account Creation screen. ►The Image Registration Setup window is displayed. Important When you try to register an image to be used for the face recognition function for the first time, the consent form for the registration is displayed (not displayed for the second and subsequent time).
  • Page 44 ACCOUNT OPERATION BY GENERAL USER Notes: ● When the camera icon is grayed out, it is unavailable. Tap the icon when it becomes active (white background). ● When the picture is improper, the “Low Score” message is displayed at the bottom of the Image Registration Setup window. Stand at the proper position where the message on the window disappears.
  • Page 45 3. SECURITY MODE Steps for registering an IC card/NFC device Note:   Near-field communication (NFC) is a standards-based short-range wireless connectivity technology. When the optional NFC reader is installed, media conforming to the following communication protocol can be used for authentication. The reader accepts the media conforming to the following communication protocols.

  • Page 46: Viewing Your Account Information

    ACCOUNT OPERATION BY GENERAL USER Tap the Apply button. ►The data is saved and the screen returns to the Settings screen. Note: If an image for face recognition is registered, the registration date appears next time when you open the Account Creation screen.
  • Page 47 3. SECURITY MODE Details of entry Item Details User Name Tap the input field and change the user name. Password Tap the input field and change the password. 1. Tap the Clear button at the Registered Image.   ►The Confirm message is displayed to ask you if you really want to delete the image.
  • Page 48 ACCOUNT OPERATION BY GENERAL USER Item Details ● When multiple people are recognized in the frame, the “Multiple faces have been detected.” message is displayed at the bottom of the Image Registration Setup window. Take the picture alone. 5. Tap the OK button. ►The indication at the Registered Image item changes from “Not Registered”...
  • Page 49 3. SECURITY MODE Item Details 4. Hold an IC card or NFC device over the NFC reader. ►Once the registration is completed, the screen returns to the Account Creation screen. The indication at the NFC item changes from “Not Registered” to “Registered.” Also, the Register button changes to the Clear button.

  • Page 50: Electric Lock And Login/Logout

    ELECTRIC LOCK AND LOGIN/LOGOUT About electric lock Electric lock is a function that automatically locks the outer door after the door is closed (the outer door needs to be firmly closed by pushing the outer door handle towards the cabinet side to engage its latch). This function becomes active when the security mode is set to ON (refer to pages 27 and 28), making the stored samples safer.

  • Page 51: Setting Electric Lock (Log In/Log Out Method)

    3. SECURITY MODE Setting electric lock (log in/log out method) To configure the electric lock settings (login/logout method), a user must log in to the freezer as an administrator. Follow the steps below to configure the settings. Tap the Settings button in the sidebar menu.
  • Page 52 ELECTRIC LOCK AND LOGIN/LOGOUT Details of entry Settable Default Item Details range value* Login Method (Unlock) A user is authenticated by entering a user ID and a password registered for their account. This setting is automatically turned ― Password ON when the security mode is set to ON. A user is authenticated by matching the face image registered in advance to the image currently being caught by the camera mounted on the freezer.

  • Page 53: Unlocking (Logging In) By The Login Button

    3. SECURITY MODE Unlocking (logging in) by the Login button You can unlock (log in to) the freezer by tapping the Login button on the Home screen and selecting the login method. Tap the Login button on the Home screen.  ...
  • Page 54 ELECTRIC LOCK AND LOGIN/LOGOUT Note: If you are not authenticated for about 20 seconds in the Standard mode or about 10 seconds in the Quick mode, the Login window with the Password radio button turned on is displayed. Log in to your account using password authentication or NFC authentication (when the optional NFC reader is installed).
  • Page 55 3. SECURITY MODE Password authentication 1) Tap the Password radio button. ► User ID and Password input fields are displayed. 2) Tap the input fields to enter your user ID and password. 3) Tap the OK button. ► If you are successfully authenticated, the outer door is unlocked and the screen returns to the Home screen.

  • Page 56: Unlocking (Logging In) By Auto Face Recognition

    ELECTRIC LOCK AND LOGIN/LOGOUT NFC authentication (when the optional NFC reader is installed) 1) Tap the NFC radio button.   ► A message prompts you to hold your IC card or NFC device over the NFC reader. 2) Hold your IC card or NFC device registered to your account over the NFC reader.

  • Page 57: Unlocking (Logging In) By Nfc Authentication

    3. SECURITY MODE Camera for To perform auto face recognition to unlock the outer door face recognition (log in), face the camera at the upper left corner of the control panel when the Home screen is displayed. ► If you are successfully authenticated, the outer door is B atter Home nt: 27˚C...

  • Page 58: Locking/Unlocking The Outer Door During Power Failure

    ELECTRIC LOCK AND LOGIN/LOGOUT To log in, hold your IC card or NFC device registered to your account over the NFC reader when the Home screen is B att ery Hom e nt: 27 ˚C Am bie 10: 48 - 8 0 ˚ C o in t : 03/ 04 S e t P...

  • Page 59: Settings And Operation

    4. SETTINGS AND OPERATION 4. SETTINGS AND OPERATION SETTING FOR BASIC OPERATION Setting temperature and high/low alarms The chamber temperature, high temperature alarm, and low temperature alarm can be set by following the steps below. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure or change the setting (refer to page 26).

  • Page 60: Configuring Other Alarm Settings And Compressor Delay Time

    SETTING FOR BASIC OPERATION Configuring other alarm settings and compressor delay time On the Alarm Settings window, the alarm delay time, door delay time, ring back function, remote alarm, and compressor delay time can be configured. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure, change the setting, or perform alarm test (refer to page 61).

  • Page 61: About Alarm Test

    4. SETTINGS AND OPERATION Settable Default Item Details range value Selects behavior of the remote alarm when the Buzzer Stop button is tapped to stop the audible alarm sound of the freezer unit. When "ON" (not linked with the Buzzer Stop button) is selected by sliding the button to the right, the alarm indication by the remote alarm Remote Alarm ON/OFF...

  • Page 62: Screen Lock

    SCREEN LOCK Screen lock is a function to avoid unauthorized changes to the settings of the freezer when the access to the freezer is not restricted by the security mode (page 26). When the screen lock is set to ON, if you try to tap the Settings button or the Import/Export button, you are asked to enter a password.
  • Page 63 4. SETTINGS AND OPERATION Settable Default Item Details range value Screen Lock Slide the slide button to turn ON or OFF the screen lock function. ON/OFF To turn ON, slide the button to the right. Password Enter a password to be used for unlocking the screen. You can use 4 to 8 alphanumeric characters and symbols for the password.

  • Page 64: Operation When Screen Lock Is On

    SCREEN LOCK Operation when screen lock is ON When the screen lock is set to ON, if you try to tap the Settings button or the Import/Export button, you are asked to enter a password. Tap the Settings button or the Import/Export button in the sidebar menu.
  • Page 65 4. SETTINGS AND OPERATION Tap the Display button. ►The Display screen is displayed. Slide the Screen Lock slide button to the left. ►The screen lock is set to OFF. Tap the Apply button. ►The setting is saved and the screen returns to the Settings screen.

  • Page 66: Other Settings

    OTHER SETTINGS Setting date and time You can set date and time for the freezer. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure or change the setting (refer to page 26). Tap the Settings button in the sidebar menu.

  • Page 67: Setting Brightness And Sleep

    4. SETTINGS AND OPERATION Setting brightness and sleep On the Display screen, you can configure the brightness of the LCD touch panel and the sleep function. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure or change the setting (refer to page 26).

  • Page 68: Setting Unit Name

    OTHER SETTINGS Setting unit name You can set a unit name that is used at the beginning of a file name when exporting the freezer data in a CSV file. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure or change the setting (refer to page 26).

  • Page 69: Setting Daq

    4. SETTINGS AND OPERATION Setting DAQ The DAQ setting is required when the optional interface board is installed. When the security mode is set to ON and a user is logged in as a user role, the user can see the setting values but cannot configure or change the setting (refer to page 26).

  • Page 70: Event Log

    EVENT LOG This product is provided with a function to store event log data such as alarm messages. ● Log data type: Alarm messages, notice messages, outer door status, login/logout, settings, acknowledge, boot, and alarm test. ● Up to 40,000 logs can be stored. When the number of logs exceeds the maximum number, the oldest log data is overwritten with the new data.

  • Page 71: Viewing The Event Log Data

    4. SETTINGS AND OPERATION Item Details Tapping this button exports the selected event log data to the USB flash drive Export button* inserted into the USB port in CSV format. Indicates the total number of events stored in this product. Number of events Tapping this button acknowledges the selected one event.

  • Page 72: Viewing And Acknowledging Pending Items

    EVENT LOG Notes: ● When all the event log items are selected, “View All” is displayed at the filtering status indication. When specific event log items are selected, “Filter On” is displayed there. ● You can scroll up and down the screen to view the items on the next or previous page using the scroll buttons.

  • Page 73: Exporting Event Log Data

    4. SETTINGS AND OPERATION Exporting event log data The event log data displayed on the Event Log screen can be exported to a USB flash drive inserted into the USB port in the CSV format. When the security mode is set to ON and a user is logged in as a user role, the user cannot export event log data.
  • Page 74 EVENT LOG Tap the Export button at the lower right part of the Event Log screen. ►Export of the selected event log data starts. Tap the OK button on the Information message indicating that the export has been completed. ►The Event Log screen is displayed. A folder named “log”...
  • Page 75 4. SETTINGS AND OPERATION ● If an error occurs, one of the following Error messages appears. ● The USB flash drive is not inserted into the USB port. ● There is not enough free space in the USB flash ● The USB flash drive is not inserted properly. drive.

  • Page 76: Operation Log Chart

    OPERATION LOG CHART On the Chart screen, the operation logs stored in the freezer can be displayed in charts. ● Operation log type: temperature log, outer door status log ● Up to about 200 days’ operation log data can be stored (fixed log interval of every two minutes). When the amount of data exceeds the maximum size, the oldest log data is overwritten with the new data.

  • Page 77: Displaying Operation Log Chart

    4. SETTINGS AND OPERATION Item Details Scale up/down Tapping the + button enlarges the scale of the vertical axis. buttons Tapping the - button reduces the scale of the vertical axis. Temperature axis Indicates the temperature in the freezer. Temperature log Tapping the ▲...

  • Page 78: Exporting Operation Log Data

    OPERATION LOG CHART Exporting operation log data The operation log data (temperature log and outer door status log) can be exported to a USB flash drive inserted into the USB port in the CSV format. When the security mode is set to ON and a user is logged in as a user role, the user cannot perform export operation (refer to page 26).

  • Page 79: Importing/Exporting Data

    4. SETTINGS AND OPERATION IMPORTING/EXPORTING DATA Various data stored in the freezer can be exported to a USB flash drive inserted into the USB port. Also, the exported user account data and freezer setting data can be imported to a different similar type model freezer to use the same accounts and setting as the original freezer.
  • Page 80 IMPORTING/EXPORTING DATA Details of setting: Details Item Type When this checkbox is selected, temperature log data and outer door status log Temperature data is exported. When this checkbox is selected, event log data is exported. You can select the Event log logs to be exported by selecting the items form the dropdown list.

  • Page 81: Exporting User Account Data And Freezer Setting Data

    ● In the case of user account data A folder named “account” is created in the USB flash drive and the exported data file is saved in the model name (e.g. “MDF-DU703VH”) folder in BIN format.

  • Page 82: Importing User Account Data

    ● In the case of freezer setting data A folder named “setup” is created in the USB flash drive and the exported data file is saved in the model name (e.g. “MDF-DU703VH”) folder in BIN format. Examples of the file names are as follows: Data...
  • Page 83 4. SETTINGS AND OPERATION Tap the Import button at the User Accounts item on the Import/Export screen. ►The Information message indicating that the existing user account data in the freezer will be replaced (overwritten) and you need to log in as the user who exported the user account data is displayed.

  • Page 84: Importing Freezer Setting Data

    IMPORTING/EXPORTING DATA Tap the OK button on the Information message indicating that the import has been completed. ►The screen returns to the Import/Export screen. Note: If the import fails, the following Error message is displayed. Tap the OK button and return to Step 3. Remove the USB flash drive from the USB port.
  • Page 85 4. SETTINGS AND OPERATION Note: ● If an error occurs, one of the following Error messages appears. ● The USB flash drive is not inserted into the ● There is no freezer setting data in the USB flash USB port. drive.

  • Page 86: Maintenance And Troubleshooting Alarms And Self-Diagnosis

    5. MAINTENANCE AND TROUBLESHOOTING ALARMS AND SELF-DIAGNOSIS Alarm messages The cooling performance has been significantly degraded. Thus, the chamber temperature may get considerably higher. Take some measures to protect the stored samples immediately (e.g. transferring the stored samples to another freezer) except when the cause is clear and the chamber temperature can be recovered soon.

  • Page 87: Notice Messages

    5. MAINTENANCE AND TROUBLESHOOTING Notice messages Cooling performance may have been degraded or there is a possibility of failure other than the cooling performance. When the temperature change is temporarily resulting from user operation, wait for the recovery of chamber temperature.

  • Page 88: Alarm And Buzzer Stop Button

    ALARMS AND SELF-DIAGNOSIS Alarm and Buzzer Stop button 1. The behaviors of the alarm indication and the ring back function when tapping the Buzzer Stop button are as follows.  In the cases other than the door alarm and communication error <Setting of the freezer>...

  • Page 89: Routine Maintenance

    5. MAINTENANCE AND TROUBLESHOOTING ROUTINE MAINTENANCE Cleaning the exterior, interior, and accessories • Clean the unit once a month. Regular cleaning keeps the unit in good condition. • Use a dry cloth to wipe down the outside and inside of the unit and all accessories. If the outside panels are dirty, clean them with a diluted neutral dish-washing detergent (using an undiluted solution of detergent may cause the unit’s plastic areas to crack.

  • Page 90: Defrosting The Chamber

    ROUTINE MAINTENANCE Defrosting the chamber  Never damage the chamber wall or pipework in the chamber when removing frost. It may cause explosions and/or a fire in case of refrigerant leakage. WARNING  Wear protective gloves when handling frozen items or cleaning the chamber. Without gloves, you may get frostbite or get injured by the corners of interior parts.

  • Page 91: Replacement Of Consumable Parts

    5. MAINTENANCE AND TROUBLESHOOTING REPLACEMENT OF CONSUMABLE PARTS  The replacement of the battery for power failure alarm should be performed by WARNING a qualified engineer or service personnel only. The replacement of the battery for power failure alarm involves the risk of electric shock. «Important»...

  • Page 92: Troubleshooting

    TROUBLESHOOTING When the freezer does not seem to be working properly, check the following solutions before making a service call. <Attention> ● If the problem is not resolved by checking the following causes/solutions or if the problem is not shown in the table below, contact our sales representative or agent.
  • Page 93 5. MAINTENANCE AND TROUBLESHOOTING Cause/Solution Problem The chamber does not ■ A large amount of warm materials has been put in the chamber. cool down enough. ■ There is a large amount of frost built in the chamber. ■ The door is frequently opened. ■...

  • Page 94: Disposal Of Unit

    DISPOSAL OF UNIT Before disposing of the freezer unit with biohazardous danger, decontaminate the unit to the extent possible by the user.  If the unit is to be stored unused in an unsupervised area for a long period, ensure that children do not have access to the unit and that doors cannot be closed completely.

  • Page 95: Options & Specifications Etc

    6. OPTIONS & SPECIFICATIONS etc. 6. OPTIONS & SPECIFICATIONS etc. OPTIONAL COMPONENTS NFC Reader (MTR-NFC) The optional NFC reader (MTR-NFC) is a contactless NFC reader. If this reader is installed, users can use IC cards or NFC devices to electrically unlock the outer door (login). The reader accepts the media conforming to the following communication protocols.

  • Page 96: Small Inner Doors (Mdf-5Id4/5Id5, Mdf-7Id4/7Id5)

    For MDF-DU503VH/VHA, small inner doors (MDF-5ID4 (4 doors), MDF-5ID5 (5 doors) are available as an optional component. For MDF-DU703VH/VHA, small inner doors (MDF-7ID4 (4 doors), MDF-7ID5 (5 doors) are available as an optional component. For the installation, contact our sales representative or agent.

  • Page 97: Setting Of Shelf Stoppers When Using Inventory Racks

    No.3 under the fifth IR-224U/ screw from the top (bottom of the upper IR-316U pilaster) MDF-DU503VH/VHA Bores above and below No.3 under the 〇  third screw from the 〇  bottom (marked with ○) Inventory rack       IR-224U/ IR-316U MDF-DU703VH/VHA...

  • Page 98: Specifications

    SPECIFICATIONS Ultra-Low Temperature Freezer Ultra-Low Temperature Freezer Product name MDF-DU503VH MDF-DU703VH MDF-DU503VHA MDF-DU703VHA Width 790 mm (31.1 inch) 1,030 mm (40.6 inch) External Depth 882 mm (34.7 inch) 882 mm (34.7 inch) dimensions   Height 1,993 mm (78.5 inch) 1,993 mm (78.5 inch) Width 630 mm (24.8 inch)
  • Page 99 6. OPTIONS & SPECIFICATIONS etc. MDF-DU503VH MDF-DU703VH Product name MDF-DU503VHA MDF-DU703VHA MTR-G85A (only for MDF-DU503/703VHA) Temperature * For installation, recorder recorder sensor cover (MTR-DU700SF) is required. NFC reader (MTR-NFC) NFC system 5 IC cards (MTR-IC) Inventory rack (IR-224U, IR-316U) Rack Drawers (MDF-50R) ―...

  • Page 100: Performance

    PERFORMANCE Ultra-Low Temperature Freezer Ultra-Low Temperature Freezer Product name MDF-DU503VH MDF-DU703VH MDF-DU503VH-PA MDF-DU703VH-PA Model number -86 °C at the center of the chamber (ambient temperature; 30 °C, no load)* Cooling performance -90 °C to -40 °C Temperature settable range -86 °C to -40 °C (ambient temperature; 30 °C, no load)

  • Page 101: Safety Environmental Conditions

    6. OPTIONS & SPECIFICATIONS etc. SAFETY 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 2,000 m; ■ Temperature 5 °C to 40 °C; ■...

  • Page 102: Safety Check Sheet

    SAFETY CHECK SHEET Please copy and fill out this form before servicing. CAUTION Hand over the form to the service engineer for their and your safety. Safety check sheet 1. Stored material □ □ □ Risk of infection: Maybe □ □...

  • Page 103: Use Of Open-Source Software

    6. OPTIONS & SPECIFICATIONS etc. USE OF OPEN-SOURCE SOFTWARE ● This product uses MD5 source code. In accordance with the MD5 license, the copyright, delivery condition, and license statement are shown below. ▪ RSA Data Security’s MD5 License RSA Data Security, Inc., MD5 message-digest algorithm Copyright (C) 1991-2, RSA Data Security, Inc.
  • Page 104 1-1-1 Sakada, Oizumi-machi, Ora-gun, Gunma 370-0596, Japan Printed in Japan LDCL077200-1 © PHC Corporation 2022 J0922-10922...

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