Instruction Manual
31 Pages
Preview
Page 1
INSTRUCTION MANUAL
BIOMEDICAL FREEZER
MDF-U730
CONTENTS INTRODUCTION
P. 2
PRECAUTIONS FOR SAFE OPERATION
P. 3
ENVIRONMENTAL CONDITIONS
P. 7
FREEZER COMPONENTS
P. 8
Control panel
P. 10
INSTALLATION SITE
P. 11
INSTALLATION
P. 12
START-UP OF UNIT
P. 12
TEMPERATURE SETTING
P. 13
OFFSET
P. 13
KEY LOCK FUNCTION
P. 14
REMOTE ALARM TERMINAL
P. 14
ALARMS & SAFETY FUNCTIONS
P. 15
DEFROSTING
P. 15
MAINTENANCE Cleaning of cabinet
P. 16
Cleaning of evaporating tray
P. 16
REPLACEMENT OF BATTERY
P. 17
TROUBLESHOOTING
P. 18
DISPOSAL OF UNIT
P. 19
Recycle of battery
P. 19
TEMPERATURE RECORDER (OPTION)
P. 24
SPECIFICATIONS
P. 27
PERFORMANCE
P. 28
SAFETY CHECK SHEET
P. 29
1
INTRODUCTION ■ Read this manual carefully before using the appliance and follow the instructions for safety operation. ■ Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or used by any procedures other than those mentioned in this manual. ■ Keep this manual in an adequate place to refer to it as necessary. ■ The contents of the manual will be subjected to change without notice due to the improvement of performance or functions. ■ Contact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect. ■ Contact Sanyo sales representative or agent if any point in this manual is unclear or if there are any inaccuracies. ■ No part of this manual may be reproduced in any form without the expressed written permission of Sanyo.
2
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 signs could result in injury to personnel and damage to the unit and associated property. Symbol shows; this symbol means caution. this symbol means an action is prohibited. this symbol means an instruction must be followed. Be sure to keep this manual in a place accessible to users of this unit.
< Label on the unit > This mark is labeled on the cover in which the electrical components of high voltage are enclosed to prevent the electric shock. The cover should be removed by a qualified engineer or a service personnel only.
3
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 and take an adequate precaution to prevent the unit from turning over. 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 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. Always ground (earth) the unit to prevent electric shock. If the power supply outlet is not grounded, it will be 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. Connect the unit to a power source as indicated on the rating label attached to the unit. Use of any other voltage or frequency other than that on the rating label may cause fire or electric shock. Never store volatile or flammable substances in this unit if the container cannot be sealed. These may cause explosion or fire. Do not insert metal objects such as a pin or a wire into any vent, gap or any outlet on the unit. This may cause electric shock or injury by accidental contact with moving parts. 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. Turn off the power switch (if provided) and disconnect the power supply to the unit prior to any repair or maintenance of the unit in order to prevent electric shock or injury. Do not touch any electrical parts (such as power supply plug) or operate switches with a wet hand. This may cause electric shock.
4
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. Never bind, process, or step on the power supply cord, or never damage or break the power supply plug. A broken supply cord or plug may cause fire or electric shock. Do not use the supply cord if its plug is loose. Such supply cord may cause fire or electric shock. Never disassemble, repair, or modify the unit yourself. Any such work carried out by an unauthorized person may result in fire, or electric shock 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.
Continued
When removing the plug from the power supply outlet, grip the power supply plug, not the cord. Pulling the cord may result in electric shock or fire by short circuit. Disconnect the power supply plug before moving the unit. Take care not to damage the power cord. A damaged cord may cause electric shock or fire. Disconnect the power plug when the unit is not used for long periods. Keeping the connection may cause electric shock, current leakage, or fire due to the deterioration of insulation. If the unit is to be stored unused in an 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. Do not put the packing plastic bag within reach of children as suffocation may result.
5
PRECAUTIONS FOR SAFE OPERATION
CAUTION Use a dedicated power source (a dedicated circuit with a breaker) as indicated on the rating label attached to the unit. A branched circuit may cause fire resulting from abnormal heating. Connect the power supply plug to the power source firmly after removing the dust on the plug. A dusty plug or improper insertion may cause a heat or ignition. Never store corrosive substances such as acid or alkali in this unit if the container cannot be sealed. These may cause corrosion of inner components or electric parts. Check the setting when starting up of operation after power failure or turning off of power switch. The stored items may be damaged due to the change of setting. Be careful not to tip over the unit during movement to prevent damage or injury. Prepare a safety check sheet when you request any repair or maintenance for the safety of service personnel.
6
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 5oC to 40oC ■ Maximum relative humidity 80% for temperature up to 31oC decreasing linearly to 50% relative humidity at 40oC; ■ Mains supply voltage fluctuations not to exceed ±10% of the nominal voltage; ■ Other supply voltage fluctuations as stated by the manufacturer; ■ Transient overvoltages according to Installation Categories (Overvoltage Categories) II; For mains supply the minimum and normal category is II; ■ Pollution degree 2 in accordance with IEC 60664.
7
FREEZER COMPONENTS 12
13
14
1
2
11 10 9
3
8 7
6
5 4
19
15 16 18 17
<Back side>
<Inside of the front cover>
8
FREEZER COMPONENTS 1. Lock: Turn clockwise to 180o with a key and the outer door is securely locked. 2. Magnetic door gasket: This prevent the cold air from escaping. Always keep clean. 3. Handle: Always grip this handle to open and close the door. 4. Leveling foot: The height of the freezer can be adjusted by this screw type foot. level at the installation.
Keep the unit in
5. Caster: 4 casters are provided to facilitate moving of the cabinet. For the installation, adjust the leveling foot so that the front 2 casters cannot contact with the floor. 6. Shelf: Items to be stored in the chamber must be placed on the shelves. The maximum storage weight for each shelf is 50 kg. 7. Access port: This is used for leading the measuring cable from the chamber to the outside. A total of two (2) are provided. ; left side and top of the freezer. 8. Door latch: Turn clockwise to lock the door and also add the lock too. 9. Temperature sensor: Located on the rear of the chamber. 10. Cold air exhaust vent: Ensure this vent is never blocked. If this vent is blocked, temperature regulation become unstable. Do not place stored item in the path of cold air. 11. Air intake vent: Ensure this vent is never blocked. temperature distribution in the chamber.
Failure to do so will result in unstable
12. Control panel: The operation status is displayed on this panel. And the temperature setting is available through this panel. Refer to page 10 for details. 13. Front cover: Open this cover when connecting the remote alarm or using the power supply outlet. 14. Space for temperature recorder: Space for an automatic temperature recorder (optional component) is available separately. See page 26 “TEMPERATURE RECORDER (OPTION)”. 15. Battery switch: Switch for battery used for power failure alarm. Always keep ON. Turn the switch OFF when the unit is in no use for a long period (more than 1 month). 16. Remote alarm terminal: Used to notify an alarm condition of the unit to remote location. See page 14 for details. 17. Evaporating tray (back side): Defrost water from the evaporator accumulates in the evaporating tray and evaporates into the atmosphere. See page 16 for cleaning. 18. Power switch (back side):
This is for turning ON/OFF the power to the unit. ON – “I” OFF – “○”
19. Fixture (back side): These keep the adequate apace between the unit and wall, and also can be used for fixing the unit.
9
FREEZER COMPONENTS Control panel 2
1
3
DOOR
9
8
1. Door check lamp (DOOR):
7
6
5
4
This lamp is lit when the door is open.
2. Alarm lamp (ALARM):
This lamp is flashed during alarm condition.
3. Temperature display: code.
This indicator shows the chamber temperature, set temperature, or error
4. Numerical value shift key ( ): Pressing this key in the setting mode causes the numerical value to change. ON-OFF of key lock can be selected by pressing this key in the key lock mode. 5. Digit shift key ( ): Pressing this key in setting mode causes the changeable digits to move. Key lock is activated by pressing this key for more than 5 seconds in the temperature display mode. See “Key lock function” on page 14. 6. Set key (SET): Pressing this key activates temperature set mode and the digit which can be set is flashed. By pressing the key again after setting, the set value is accepted. 7. Defrost key (DEF): Defrost will be started by pressing this key for more than 5 seconds.. 8. Alarm buzzer stop key (BUZZER): Press this key to silence the buzzer in the event that the alarm operates and buzzer sounds. See page 15 for the details. 9. Alarm test key (ALARM TEST): The lamp is blinks and buzzer will sound and remote alarm will be activated by pressing this key.
10
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. ■ A location with adequate ventilation Leave at least 10 cm around the unit for ventilation. Poor ventilation will result in a reduction of the performance and consequently the failure. ■ A location away from heat generating sources Avoid installing the unit near heat-emitting appliances such as a heater or a boiler etc. decrease the intended performance of the unit.
Heat can
■ A location with little temperature change Install the unit under stable ambient temperature. The allowable ambient temperature is between +5 and +35oC. ■ A location with a sturdy and level floor Always install the unit on a sturdy and level floor. The uneven floor or tilted installation may cause failure or injury. Install the unit in stable condition to avoid the vibration or noise. Unstable condition may cause vibration or noise.
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. ■ A location not prone to high humidity Install the unit in the ambient of 80% R.H. or less humidity. Installation under high humidity may cause current leakage or electric shock.
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. ■ A location without flammable or corrosive gas Never install the unit in a flammable or volatile location. This may cause explosion or fire or may result in the current leakage or electric shock by the corrosion of the electrical components. ■ A location without the possibility of anything fall Avoid installing the unit in the location where anything can fall down onto the unit. This may cause the breakdown or failure of the unit.
11
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. Then wipe off the panels with a dry cloth. 2. Adjusting the leveling foot Extend the leveling feet by rotating them counterclockwise to contact them to the floor. Ensure the unit is level. (Fig.1)
Leveling foot
Fig. 1
Fixture
3. Fixing the unit Two fixtures are attached to the rear of the frame. Fix the frame to the wall with these fixtures and rope or chain. (Fig.2)
Fig. 2 4. Ground (earth) The ground (earth) is for preventing the electric shock in the case of the electrical insulation is somehow degraded. Always ground the unit at the time of installation.
WARNING 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.
START-UP OF UNIT Follow the procedures for the initial and consequent operations of the unit. 1. Connect the unit to dedicated power supply and turn on the power switch. Do not put any product in the unit at this time. 2. Set the desired temperature. 3. Confirm that the chamber temperature is at the desired temperature. 4. When you are satisfied that the unit is working correctly, begin slowly placing product into the chamber to minimize the temperature rise.
Operation after power failure The set value is memorized by nonvolatile memory. Accordingly, the freezer resumes the operation with setting before power failure.
12
TEMPERATURE SETTING Table 1 shows the basic operation method. Perform key operations in the sequence indicated in the table. The example in the table is based on the assumption that the freezer temperature is -25oC. Note: The unit is set at the factory that the chamber temperature -30oC. Table 1 Basic operation sequence (Example: Chamber temperature -25oC) Description of operation Key operated Indication after operation The current chamber temperature is Connect the power source and turn displayed. Chamber temperature 1 ---on the power switch. higher than 1oC to be displayed ”HI”, lower than -41oC to be displayed “LO”. The first digit of the temperature 2 Press set key. SET displayed flashes. Pressing the digit shift key leads the Set the temperature to -25 with the flash of the second digit. 3 digit shift key and the numerical When pressed, the figure of settable value shift key. digit increases. The value is stored in memory and 4 Press set key. SET the current chamber temperature is displayed. Note: ￭ The setting mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation. In this case, any setting before pressing the set key (SET) is not memorized. ￭ The freezer temperature can be set in the range between -20 and -35oC. Remember that the guaranteed temperature with no load at an ambient temperature of 35oC is -30oC
OFFSET The difference between chamber temperature and display temperature can be arranged by key operation. As an example, Table 2 shows the procedure in case actual chamber temperature is -25oC and displayed temperature is -27oC, change the displayed temperature to -25oC. Table 2 Offset setup procedure Description of operation 1
Key operated ----
Indication after operation The current chamber temperature is displayed.
2
Press the digit shift key for more than 5 seconds.
The first digit of the temperature displayed flashes.
3
Set to 2 by using numerical value shift key.
When pressed, the figure of settable digit increases.
4
Press set key.
SET
13
The current chamber temperature is displayed.
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 Lo0 Lo1
Mode Key lock is OFF Key lock is ON
Function Enable to change of temperature setting Disable to change of temperature setting
Table 3 Procedure for key lock setting (change from key lock OFF to key lock ON) Description of operation 1
Key operated ----
Indication after operation The current chamber temperature is displayed.
2
Press digit shift key for 5 seconds.
The first digit is flashed.
3
Press numerical value shift key and scroll the figure to 1.
4
Press set key.
When pressed, the figure of settable digit increases. The key lock is set to ON. The current chamber temperature is displayed.
SET
Note: The key lock only works with the chamber temperature setting and the defrost key (DEF).
REMOTE ALARM TERMINAL WARNING Always turn off the power switch and 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 top of the unit. The alarm is outputted from this terminal between terminal 1 and terminal 2. Contact capacity is DC 30 V, 2 A. between COM. and N.O. between COM. and N.C. At normal Open Close At abnormal Close Open
1
N.C.
2
3
COM N.O.
Note: The remote alarm is silenced by pressing the alarm buzzer stop key (BUZZER) as the remote alarm is operated in conjunction with the buzzer except for the power failure alarm and alarm test.
14
ALARMS & SAFETY FUNCTIONS This unit has the alarms and safety functions shown in Table 4, and also self diagnostic functions. Table 4 Alarms and safety functions Alarm & Safety High temperature alarm Low temperature alarm
Situation
If the chamber temperature o deviates by +10 C from setting. If the chamber temperature o deviates by -10 C from setting.
Indication Alarm lamp is flashed. Temperature indicator is flashed. Alarm lamp is flashed. Temperature indicator is flashed.
Buzzer Intermittent tone after a delay 15 minutes. Intermittent tone after a delay 15 minutes.
Safety operation Remote alarm is activated after a delay of 15 minutes. Remote alarm is activated after a delay of 15 minutes.
In the case of power failure. Power failure alarm
When power switch is turned OFF. When the power to the unit is
Alarm lamp is flashed.
Intermittent tone
Remote alarm is activated.
disconnected. Door alarm
When the door is open. If a key operation is not performed for
Auto return
about 90 seconds in each setting mode.
Key lock
Thermal sensor
Chamber temperature is displayed.
When the key lock is ON (Lo1).
If the thermal sensor goes open (E1/LO) .
Abnormality
Door check lamp is lit.
If the thermal sensor goes short circuit (E1/HI). If the defrost sensor goes open (E2/LO). If the defrost sensor goes short circuit (E2/HI).
-----
Intermittent tone after
-----
Setting mode is canceled.
-----
Key input is unable.
Alarm lamp is flashed. E1 and LO are displayed Intermittent tone alternately. Alarm lamp is flashed. E1 and HI are displayed alternately.
cooling fan motor.
Abnormality
In case of abnormal high ambient
Remote alarm is activated. Operation is keeping continuously. Remote alarm is
Intermittent tone
activated. Operation is keeping continuously. Remote alarm is
In case of failure of compressor Compressor temp.
-----
a delay of 2 minutes.
activated. -----
Intermittent tone
Compressor stops running when the
temperature.
o
temperature about 95 C.
Note: ￭ The alarm status of remote alarm terminal is cancelled by pressing the alarm buzzer stop key (BUZZER) since the remote alarm is operated in conjunction with alarm buzzer. (except for power failure alarm status) ￭ After a power failure, the unit will resume operation with the set value that was in place before power failure occurred.
DEFROSTING Remove the frost if the freezer operation must be continued. Pay attention not to impact or damage the inner wall. The defrosting is performed automatically, when a sum of the operation time up to six (6) hours. The defrost water accumulates in the tray evaporates into atmosphere. Pressing the defrost key (DEF) for more than five (5) seconds, defrost will be started. And after finishing defrost, freezer will start operating again automatically.
15
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 ￭ Clean the unit once a month. Regular cleaning keeps the unit looking new. ￭ Use a dry cloth to wipe off small amounts of dirt on the outside and inside of the unit and all accessories. 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. Then wipe off the cabinet or accessories with a dry cloth. ￭ Never pour water onto or into the unit. Doing so can damage the electrical insulation and may cause electric shock or short circuit. ￭ The compressor and other mechanical parts are completely sealed. This unit requires absolutely no lubrication.
Cleaning of evaporating tray CAUTION Dispose of the water in the evaporating tray completely. Spilled water or splashed water may cause current leakage or electric shock. Clean the evaporating tray regularly. The dusty tray may cause poor evaporation. This unit is provided with the evaporating tray on the back. 1. Remove four screws of the fixing bracket. 2. The evaporating tray to removed. Fixing bracket
3 Wash the evaporating tray. 4. Fix the tray with four screws of the fixing bracket.
Screw Evaporating tray
16
REPLACEMENT OF BATTERY Location of a nickel-metal-hydride battery This unit is provided a nickel-metal-hydride battery for the power failure warning device. The battery is located in the inside the front cover on the upper side. (Fig. 1) The high voltage components are enclosed in the front. The should be removed by a qualified engineer or a service personnel only to prevent the electric shock. Removal of nickel-metal-hydride battery 1. Turn off the power switch, battery switch and disconnect the power supply plug. 2. Lift the front cover. (Fig. 2) 3. Remove 2 screws fixing the battery fixture with a screw driver. (Fig. 3) 4. Disconnect the connector and take out the battery. (Fig. 4) 5. Follow the procedure for recycling or proper disposal.
Electrical box
Battery Fig. 1 Battery
Fig. 2
Battery fixture
Battery fixture
Connector
Screw Fig. 3
Battery
17
Fig. 4
TROUBLESHOOTING If the unit malfunctions, check out the following before calling for service. Malfunction The chamber is not cooled at all
Check/Remedy ￭ The circuit breaker of power source is active. ￭ The voltage is too low? (In this case, call an electrician.) ￭ The power switch is not ON. ￭ The large amount of articles (load) is stored in the chamber at one time. ￭ 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 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 chamber.
When the unit does not accept changes of set-point temperature
￭ The key lock is set in ON.
Noise
￭ The freezer is not installed on the sturdy floor. ￭ The freezer is not leveled with the leveling feet. ￭ There is anything touching the frame. ￭ 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.
Note: If the malfunction is not eliminated after checking the above items, or the malfunction is not shown in the above table, contact Sanyo sales representative or agent.
18
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.
Recycle of battery The unit contains a rechargeable battery. The battery is recyclable. At the end of it’s useful life, check with you local solid officials option or proper disposal. 廢電池 請回收
＊Label indication is obliged to comply with Taiwanese battery regulation.
19