MELING YCD-FL289 Combined Refrigerator and Freezer User Manual

MELING YCD-FL289 Combined Refrigerator and Freezer

Product Information

Specifications

• Product Type: Combined Refrigerator and Freezer
• Models: YCD-FL289, YCD-EL300, YCD-EL450, YCD-FL450, YCD-FL519
• Manufacturer: Zhongke Meiling Cryogenics Company Limited
• Website: www.melingbiomedical.com
• Email: zkmeiling@zkmeiling.com

Product Usage Instructions

Application Notes
Please read the safety instructions carefully before using the Combined Refrigerator and Freezer. Ensure that there is no violent vibration or collision during transportation or use of the
equipment. Only trained and authorized personnel should operate the equipment. If you encounter any issues not covered in the manual, contact MELING BIOMEDICAL or their authorized agent for assistance.

Safety Instructions
When using the product for the first time, pay attention to warning signs and read safety precautions thoroughly for safe operation. Always wear protective gloves and follow recommended defrosting procedures. Maintain good hygiene habits and ensure proper ventilation around the appliance. Do not use unauthorized accessories or appliances inside the storage compartments.

Tips

• Dry water stains around the sealing strip after each access to prevent freezing.
• Wear protective gloves when handling items in the equipment to avoid frostbite.
• Use protective equipment correctly (clothes, gloves, goggles).
• Maintain good hygiene habits.
• Ensure ventilation openings are clear of obstructions.

Maintenance
Maintenance of the equipment should only be carried out by MELING BIOMEDICAL or their authorized agents. Regular inspections and maintenance are essential to ensure optimal performance of the equipment.

Defrosting Process
Do not use mechanical devices or methods other than those recommended by the manufacturer to accelerate the defrosting process. Avoid damaging the refrigerating circuit during
defrosting.

Usage Restrictions
This appliance is not intended for use by individuals with reduced capabilities unless supervised. Children should be supervised to prevent misuse of the appliance. If the supply cord
is damaged, it must be replaced by qualified personnel to avoid hazards.

FAQs

1. Q: Can I use accessories other than those provided by MELING BIOMEDICAL?
   A: It is recommended to use accessories provided by MELING BIOMEDICAL to avoid adverse consequences. The manufacturer will not be responsible for issues caused by using other accessories.

2. Q: How often should the equipment be inspected and maintained?
   A: The equipment must be inspected and maintained regularly to ensure proper operation. It is recommended to follow the maintenance schedule provided by MELING BIOMEDICAL.

Website: www.melingbiomedical.com
Email: zkmeiling@zkmeiling.com

Application Notes

Thank you for choosing MELING BIOMEDICAL products! For your safe and convenient use and reasonable maintenance of the equipment, please read the Operation Manual carefully before use and keep it properly for reference. The equipment operator can copy some chapters of this operation manual, but only for internal use, for example, to instruct the user how to deal with emergencies. These chapters are clearly marked in the catalog of the manual. MELING BIOMEDICAL has no obligation and responsibility for any instrument damage caused by the user’s failure to use the equipment according to the instructions or the method specified by the manufacturer. Due to the rapid improvement of MELING BIOMEDICAL products, the functions described in the Manual may be inconsistent with those of the products you purchased. Please refer to the physical functions.

• Please read carefully the Attention and Safety Precautions in 2. Safety Instructions.
• During transportation or use, no violent vibration or collision is allowed and the equipment shall be kept away from rain.
• Combined Refrigerator and Freezer (hereinafter referred to as the equipment) can only be operated by trained and authorized personnel.
• If the operator encounters any situation not mentioned in this manual, please contact MELING BIO MEDICAL or the agent authorized by MELING BIOMEDICAL for the correct handling method.
• If the equipment is not used according to the method specified in the specification, it may be damaged.
• Try to use the accessories provided by MELING BIOMEDICAL. If users would like to use other accessories, MELING BIOMEDICAL will not be responsible for the adverse consequences caused therefrom.
• Maintenance of the equipment can only be completed by MELING BIOMEDICAL or an agent authorized by MELING BIOMEDICAL.
• Equipment must be inspected and maintained regularly to ensure good operation of the equipment.
• Protective gloves must be worn.
• Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by the manufacturer.

Warning:
After each access, be sure to dry the water stains around the sealing strip to prevent freezing.
Wear protective gloves when storing items in the equipment, and beware of frostbite!

Tips

• Always use protective equipment correctly (including clothes, gloves, goggles, etc.).
• Always keep good hygiene habits.
• Each personnel is obliged to be responsible for his or her own safety.
• Keep clear of obstruction all ventilation openings in the appliance enclosure or in the structure for building-in.
• Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by the manufacturer.
• Do not damage the refrigerating circuit.
• Do not use electrical appliances inside the food/ice storage compartments unless they are of the type recommended by the manufacturer.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.

Safety Instructions

When using this product for the first time, please pay attention to the meaning of the following warning signs and carefully read the safety precautions, so that you can use this equipment safely and correctly.

• Warning! Failure to observe the precautions may result in serious personal injury or death.

• Must be grounded

• Do not place it obliquely

• Beware of electric shock.

• Beware of fire. Warning; flammable material

• Warning; crushing of hands.

• Attention! Failure to observe the precautions may result in personal injury or equipment failure and related property losses

• Risk of Exploration This sign indicates the risk of explosion when using volatile and explosive chemicals.

• Avoid direct sunlight

• Beware of low temperature

• This equipment is a precision instrument

• Warning: Risk of fire/flammable materials.

• Warning: Failure to observe the precautions may result in serious personal injury or death.

• Do not touch the equipment with wet hands to avoid electric shock; Equipment shall not be grounded through gas pipeline, water supply pipeline, telephone line or

• lightning rod, which may easily cause electric shock.

• This equipment can only be installed by professional technicians or after-sales maintenance personnel, it may cause electric shock or fire.
  Be sure to install the equipment on a solid and flat ground and take due care to prevent tipping over. If the ground is not solid enough or the installation location is not

• appropriate, it may cause the equipment to fall over and cause equipment damage or personal injury.

• Please handle the power cord carefully to avoid short circuits or open circuits. Please turn off the power before pulling out the power plug. Hold the power plug carefully and pull it out. Do not pull the wires of the power plug. Otherwise, it may cause electric shock or fire due to the short circuit. Don’t bundle the power cord, don’t press it under furniture or heavy objects, and don’t get close to heat sources such as compressors.

• Please insert the power plug into the outlet tightly to ensure firmness and reliability, so as to avoid electric leakage; After installation, the power plug must be within reach, so that the power cord can be unplugged in time in case of emergency.

• Separate special outlets must be used and grounded reliably. The cross-sectional area of the copper conductor in the wall connected with the outlet must be more than 4mm2. Do not lengthen the power cord without authorization to avoid heating or fire.

• Do not use the power supply that is not specified in the equipment design, so as to avoid overheating, short circuit and other faults. For example, connecting 110V rated voltage products to 220V power supply may cause faults such as overheating and equipment burning. For detailed input voltage AC please refer to Specification(Rated voltage ±10%).If the operating voltage is too low or too high, a suitable automatic voltage stabilizer must be installed for cooperative use.

• Please place the equipment stably and avoid shaking.

• Do not place the equipment in a dangerous area, and do not operate the equipment near flammable items to prevent explosion or fire accidents.

• Vents and drains are located at the bottom of the equipment. It is forbidden to place items at the bottom of the cabinet.

• Do not place the equipment in areas exposed to the sun or rain, so as to prevent danger such as short circuit or overheating.

• Do not tilt or lay the equipment sideways, and do not impact the equipment body; Refrigeration systems are installed in the equipment, which is easy to be damaged by tilt or impact.

• Please place the equipment in a dry and dust-free environment to avoid risks such as overheating, and short circuit.

• In case of unexpected sound, smell, smoke, etc. when the power is turned on, please unplug the power in time and contact the manufacturer or supplier.

• Please place the equipment in a dry and ventilated environment, and ensure that the equipment vents and instrument surfaces are not blocked or shielded by walls or other objects;

• Do not use it in a poorly ventilated environment to prevent damage caused by heat released by equipment.

• It is forbidden to disassemble and modify this equipment without authorization, so as to avoid potential safety hazards. In this case, MELING BIOMEDICAL will not bear any responsibility for quality accidents.

• It is forbidden to put inflammable and explosive dangerous goods, strong corrosive acids, alkalis and other items unsuitable for the equipment in the equipment.

• When storing toxic, harmful or radioactive materials, please use the equipment in safe areas. Improper use may cause harm to human health or environment.

• Metal objects such as nails or iron wires shall not be inserted into any aperture and gap or any outlet of the equipment, otherwise electric shock or injury may be caused due to  accidental contact between the above objects and moving parts.

• In order to ensure the normal operation and ventilation and heat dissipation of the equipment, the back, left and right sides of the cabinet body should be at least 30cm away from the wall, and the air inlet and air outlet must not be blocked by obstacles.

• This equipment must be connected to a ground wire.

• Note: Failure to observe the precautions may result in personal injury or equipment failure and related property losses.

• It is forbidden to store living animals, flowers or other items with strict temperature requirements in the equipment.

• When the equipment is running, do not touch the inner surface of the cabinet without wearing protective gear.

• Hold the handle and close the door to avoid pinching your fingers; When the equipment is not used for a long time, please unplug it and pack it for storage.

• When restarting the equipment after power failure or power off, please check the equipment settings first, otherwise the stored items may be damaged due to the change of settings.

• The equipment can be used for item preservation, not as production equipment.

• Keep the keys properly, so as to avoid accidents when children open the door accidentally.

• When handling the equipment, please be careful not to tip over the equipment, so as to prevent equipment damage or personal injury.

• When handling, it shall be lifted from the bottom, with the inclined plane not be greater than 45°, and it shall be handled with care. Please use the equipment in safe areas.

• Improper use may cause harm to human health or environment.

Precautions in Use

• Before putting the items into the equipment, please confirm that the temperature in the storage chamber has reached the set value first, and then put the articles in batches. Every time you put in items, they shall not exceed 1/3 of the inner volume of the equipment so as to prevent excessive temperature rise.
• The cabinet body is provided with a test hole so as to lead out the test line from the cabinet during the test. After the test line is led out, it is necessary to plug the test hole with thermal insulation material again, otherwise the temperature inside the equipment may not reach the set value, and condensation will appear around the outside of the through hole.
• The equipment temperature display value is the temperature at the temperature sensor in the storage chamber. There is a certain gap between the displayed temperature and the actual temperature at the center of the equipment when the equipment just starts running, but as the equipment enters a stable state, the displayed temperature will gradually approach the actual temperature.
• Please use a diluted neutral cleaner to clean the equipment, and do not use brushes, acid, gasoline, soap powder, polishing agent or hot water to clean the equipment, otherwise the painted surface and plastic rubber parts may be damaged. Be careful not to wipe plastic rubber parts with volatile solvents such as gasoline.
• After a period of operation, a layer of frost will form on the inner wall and inner door of the cabinet body. Before defrosting, please take out the frozen items in the equipment and put them in an environment suitable for their storage, so as to prevent the item damage due to the temperature rise in the equipment during defrosting.
• When the equipment is not used for a long time, the power supply shall be cut off.

Product Installation

Installation Environment

• Ambient temperature: 16°C ~ 32°C, the most ideal temperature is 18°C ~ 25°C, and the air conditioning system shall be used when necessary.
• Relative humidity: ≦80%RH.
• Avoid the existence of a large amount of dust.
• Avoid rocking or shaking the equipment.
• Elevation of the working position of the equipment: less than 2000m.
• There is no strong vibration and corrosive gas around.
• Indoor use, pollution degree 2, and overvoltage category II.
• For detailed input voltage AC please refer to Specification(Rated voltage ±10%).
• There is no direct sunlight, other cold and heat sources and strong electromagnetic interference, which will affect the normal operation of the control system and directly damage the system in severe cases.

Installation Site

• In order to operate the equipment normally and obtain the best performance level, the installation site of the equipment shall meet the following requirements:
• It cannot be installed in a narrow and closed space, and the door of the room shall not be smaller or lower than this equipment, which shall at least ensure the normal access of the equipment, so as to avoid the maintenance difficulties in case of equipment failure, which may result in damage to stored items due to the failure to repair the equipment in time;
• The installation floor must be solid, flat, non-combustible and able to bear the weight of the equipment during operation;
• It shall be with good ventilation, and direct sunlight shall be avoided;
• Check the working voltage before use. In areas with unstable voltage, consider using a voltage stabilizer suitable for equipment load to ensure that the input voltage requirements in the installation environment are met. In case of any doubt, please contact our after-sales personnel for installation.
• Elevation of the working position of the equipment: less than 2000m.
• Equipment shall be reliably grounded. If the power cord outlet is equipped with a grounding wire, check whether or not the grounding is good before use. If the outlet is not equipped with grounding wire, it must be installed by professional engineers and technicians.

Attention: Since the ambient temperature has great influence on the equipment, if the above environmental requirements cannot be met, the equipment may not run normally. Please improve the environment before using the equipment; The equipment is operated intermittently.

Preparation Before Use

1. Remove the outer packaging of all products (including the protective foam in the packaging box) Warning: Don’t put the plastic bags within the reach of children, so as to prevent suffocation accidents.
2. Inventory of accessories: Please check the accessories and materials according to the packing list.
3. Cleaning: Clean the product once before use.

First Power-on
When using the equipment for the first time, please follow these steps:

1. After the equipment is placed, leveled and cleaned, it shall stand for more than 24 hours, and then power it on to ensure the normal operation of the equipment.
2. Under no-load condition, connect the power cord to a special outlet with appropriate specifications.
3. After powering on, turn on the power switch of the equipment.
4. Check whether the operating temperature of the equipment reaches the required value, observe the normal start and stop of the equipment for more than 24 hours, and put a small amount of items in the equipment after confirming the normal performance.
5. Please store items in batches, with the items not exceeding 1/3 of the caibinet body volume each time. Ensure that the equipment is running properly after shutdown for more than 12 hours before putting in the next batch of items).
6. Try not to open the door during cooling, otherwise the temperature will rise.

Operation after Power Failure

1. The equipment has a memory function for the set value. When the power is restored after power failure, the equipment will continue to operate before power failure.
2. Once the equipment is powered off, it requires 5 minutes before it can be switched on again, so as to avoid damaging the compressor.
3. We guarantee the normal operation of this equipment under certain conditions, but we are not responsible for any loss or damage of stored items after power failure.

Notes:

• The transportation and movement of equipment is realized by casters.
• A special person shall be responsible for checking and recording the running status of the equipment every day (record and check once every 2-4 hours). In case of failure or shutdown, the temperature in the storage chamber will rise. If it cannot be repaired in a short time, please take out the stored items and transfer them to a place that meets the temperature requirements for storage to avoid damage to the items.
• Before putting items into the equipment, it shall be confirmed in advance whether the temperature range of the equipment meets the temperature requirement of the items, so as to avoid damage to stored items due to the difference between the settable temperature of the equipment and the required temperature of the items. Please pay attention not to block the air outlet and air inlet when putting items into the equipment.
• Due to the refrigeration inertia, there is a certain difference between the actual display temperature and the set temperature of the equipment, which is a normal phenomenon.
• The equipment is an item storage equipment, which cannot be used for routine production operations. It is strictly forbidden to put too many items which are relatively hot into the equipment at one time, otherwise the compressor will run for a long time, and be burned due to high temperature. Items must be put in batches, so as to ensure that the storage chamber is cooled step by step until the temperature required for storing items is reached.
• Electrical appliances without production license shall not be used inside the equipment.
• Do not change the set temperature frequently in a short time, otherwise the expected setting effect may not be achieved due to the large temperature inertia; Ensure that there is a certain air circulation space around the cabinet when putting in items, especially do not block the temperature sensor in the cabinet (for collecting the temperature of the cabinet), otherwise it will affect the stability and accurate control of the temperature in the cabinet body.
• Items shall not be placed directly at the bottom of the equipment, but on the bottom shelf, otherwise the refrigeration effect of the equipment will be affected.
• When putting in items, if the moisture content of the items is too much or too little, it will affect the humidity change in the cabinet, so it is best to keep the items sealed; The humidity of the working environment will affect the change of humidity in the cabinet, especially if the door is opened too frequently and the door is not closed properly.

Warning: Children are not allowed to play with this equipment as a game prop, otherwise the injury or loss caused therefrom will be at their own risk.

Component Composition

• The YCD-FL289 freezer has six shelves, each with capacity of 21 Kg;
• The YCD-EL300 freezer has six shelves, each with capacity of 23 Kg;
• The YCD-EL450/YCD-FL450 freezer has six shelves, each with capacity of 29 Kg;
• The YCD-FL519 freezer has six shelves, each with capacity of 34 Kg.
• Due to the improvement of products and model difference, the actual products may be different from the diagram. Please refer to the actual products! The diagram is only used for functional parts description.
• Structure and composition: The product consists of cabinet body, door body, refrigeration system and control system.
• Scope of application of the refrigerator & freezer: It is suitable for storing items by refrigeration or freezing in hospitals, epidemic prevention stations and scientific research institutes.

Operating Instructions

Function Introduction
The series of products include two kinds of control systems with different control systems for different adjustment methods. Please select the corresponding adjustment method according to the control system type of the preservation box you have purchased.

Type A control panel (applicable to YCD-EL300 )

Function description of Type A control panel

• a. It is temperature display window of the refrigerator chamber, which displays the average temperature inside the cabinet body in °C under normal operation; Different prompt characters can be displayed in the setting state (see below for details);
• b. It is temperature display window of the freezer chamber, which displays the average temperature inside the cabinet body in °C under normal operation; Different prompt characters can be displayed in the setting state (see below for details);
• c. In parameter setting mode, move to the previous parameter or decrease the parameter value. For example, when adjust the set temperature, press this key reduce the set temperature. When adjusting the parameter value, long press the down button, and the parameter will decrease rapidly;
• d. In parameter setting mode, move to the next parameter or increase the parameter value. For example, when setting the set temperature, increase the set temperature value. When setting the parameter value, long press the up button, and the parameter will increase rapidly;
• e. Is refrigerator setting button;
• f. Is a refrigeration indicator in the refrigerator chamber. The indicator lights up when the refrigeration is working, goes out when the refrigeration is stopped, and flashes when the refrigeration is delayed;
• g. Is defrosting indicator in the refrigerator chamber. The indicator lights up when the defrosting is working, and goes out when the defrosting is stopped;
• h. Is refrigeration indicator in the freezer chamber. The indicator lights up when the refrigeration is working, goes out when the refrigeration is stopped, and flashes when the refrigeration is delayed;
• i. Is defrosting indicator in the freezer chamber. The indicator lights up when the defrosting is working, and goes out when the defrosting is stopped;
• j. Is freezer setting button;

Function setting of Type A control panel

1. After powering on, the equipment can enter the working state;
2. User parameter settings: In measurement and control state, press SET key, and the digital tube will flash and display temperature value currently set, enter the user parameter settings state, press or key to adjust the set temperature, long press or key to make the set temperature value in an increasing or decreasing succession, press SET key or no operation within 5s to save parameters and return to measurement and control state.
3. On and off: in the measurement and control state, press key for 3s to turn off the display and output control, and enter the power-off state (you can turn off the refrigerator chamber or freezer chamber separately). Press any key to turn on the display and output control, and return to the measurement and control state.
4. Parameter display

Note: in case of high and low temperature alarm, the buzzer will sound and the digital tube will flash to display the current temperature. In data failure, sensor failure, high and low temperature alarm and the controller in power-on state, the buzzer will sound and will become mute when pressing any key; after all the failures are recovered or 30 minutes later, the mute will fail.

(Applicable to YCD-FL289/YCD-EL300//YCD-EL450/YCD-FL450/YCD-FL519)

Function description of Type B control panel

• a. 4.6 -40 is temperature display window, which displays the average temperature inside the upper  refrigerator chamber and lower freezer chamber of the cabinet body in ℃ under normal operation (the lower chamber temperature range of YCD-EL series is – 1 0～- 2 6℃); Different prompt characters can be displayed in the setting state (see below for details).
• b. Door opening indicator: When the refrigerator chamber door is opened, the indicator lights up. After more than 1 minute, the door opening alarm indicator light will be on and the buzzer triggered, displaying “door”.
• c. Fault indicator light: When the product runs normally, the indicator light is off; The indicator light is on for operation abnormality.
• d. “LIGHT:” after the equipment is powered on, the light is off by default, and the on-off of the light can be adjusted by the on-off key. When the light is out, it will be turned on by opening the door and then turned off by closing the door; When the light is on, it will keep on if you open or close the door. This equipment has two functions: automatic lighting and manual lighting. In the automatic lighting state, the lighting lamp will be on immediately when the door is opened, and the lighting lamp will be off after a 5 seconds delay; The user can also turn on the lighting lamp manually. In this case, the lighting lamp is always on (the indicator light above the key is on) without being controlled by the door opening and closing. Only when the manual lighting is turned off by pressing the light switch key again can the lighting lamp be automatically on (the indicator light above the key is off).
• e. “PRINT:” the system can keep 7 days of data for printing. Press the print key to print the temperature within the set time period.
• f. : In parameter setting mode, reduce the parameter value. For example, when adjust the set temperature, press this key reduce the set temperature. When adjust the parameter value, long press the down button, and the parameter will decrease rapidly.
• g : In parameter setting mode, increase the parameter value. For example, when adjust the set temperature, press this button to increase the set temperature value. When setting the parameter value, long press the up button, and the parameter will increase rapidly. Under normal conditions, long press the up key for 3 seconds to import the data of the USB flash drive in 1 2 months.

In unlock state and parameter setting mode, press this key to display parameter values and parameter names. If the pressing time is longer than 3 seconds, save the settings and return to the normal interface.

USB interface

Automatic export: when the U disk is connected to the USB interface, the recorder buzzer will chirp once and display “on”. PDF files of data that not currently exported will be generated in the U disk. After data transmission, the buzzer will chirp once again and display “End”.After 6s, it will return to normal display.
Note: When there is less data, “USB,” “on” and “End” prompts are not displayed.
Manual export of USB data: In the key unlock state, when the USB flash drive is connected and the file is not being generated, press the up key for 3 seconds, and the digital tube in the lower chamber will display “d01.” Press the key up or down key to adjust “d00~d12,” and press key to cancel the file generation (d00) or generate the PDF file of the record data of the previous months (1-12).
Note: When the alarm of the digital tube flashes and displays “LoF,” the recorder is not started;

Parameter display

High temp alarm is disabled; When the alarm is over high temp alarm set, H01 will be displayed on the controller
5| L01| 0.0～10.0| 5.0| Set value of low temperature alarm set-L; when L = 0, low temp alarm is disabled; when the alarm is below low temp alarm set, L01 will be displayed on the controller
6| Set2| YCD-EL series: -10~-26 YCD-FL series: -10~-40| YCD-EL series: -20 YCD-FL series: -40| Freezer temperature setting
7| H02| 0.0~10.0| 5.0| Set value of high temperature alarm set+H; when H02 = 0, High temp alarm is disabled; When the alarm is over high temp alarm set, H02 will be displayed on the controller
8| L02| 0.0~10. 0| 5.0| Set value of low temperature alarm set-L; when L02 = 0, low temp alarm is disabled; when the alarm is below low temp alarm set, L02 will be displayed on the controller
9| Pt| 0~240 min| 20| Print interval
10| tH1| 20. 0~50. 0°C| 40| Upper limit of ambient temperature alarm
11| P1|

1. Automatic heating mode 1
2. Automatic heating mode 2
3. Automatic heating mode 3
4. Always on Always off

|

1.  (Set to 4 when the door is with condensation)

| Mode 1: It shall be judged as once after the door is opened and closed once and heated for 5min (time setting). If the door is opened and closed again during the heating period, the heating time will be updated again; Mode 2: After the compressor is running. Heater on; When the compressor stops, the heater is delayed for 1 minute for turn-off; Mode 3: When the humidity in the cabinet is more than 80%, the door heating is on, and when the humidity in the cabinet is moderately less than 60%, the door heating is off; Mode 4: Door heating is always on; Mode 5: Door heating is always off.
12| PS1| 0000～9999| 0005| User menu password settings
13| MAX| | | The highest temperature since last clearance
14| NIN| | | The lowest temperature since last clearance
15| CLR| | | Clearance of the Max and Min temperature records

Quick setting of time after power on After the power-on self-test on the display board is completed, the quick setting menu is displayed.

If there is no operation for 60 seconds under the quick setting menu, it will automatically exit the quick setting menu and return to normal display.

Alarm display

Optional function

Printer
The printer has been installed with a paper roll at the factory. If the paper roll is used up after a long period of use, you can buy the same paper roll (size: thermal paper, paper width: 57.5±0.5mm, the outer diameter of the reel: not greater than 40mm, i.e., RM57*40 back-roll paper)

Description of printer panel:

1. Open button. Press to open the cover;
2. SEL button, indicator light, for factory setting. Do not press it;
3. Lf button. The green indicator is the power indicator and it is normally on when the power is turned on;
4. Paper roll

Install the paper roll:

Press the open button 1, open the cover, install the paper roll, close the cover plate and allow the head of the roll paper to slightly extend out of the cover plate.

Remote alarm terminal, RS485 interface and network interface
Remote alarm terminal, RS485 interface and network interface are installed in the lower part of the back of the freezer body.
Note: These configurations are standard for some models.

Defrost, Discontinuation and Maintenance

Warning:

• In order to prevent people from getting electric shock or injury, please cut off the power supply of the equipment before any repairs and maintenance
• Make sure you don’t inhale drugs or suspended particles around it when maintaining the equipment, otherwise it will harm your health

Equipment Maintenance
Defrosting: The equipment will automatically defrost during operation, which is convenient to use. Cleaning and maintenance: The equipment should be cleaned and maintained regularly (for safety, please unplug the power plug), and the inner and outer surfaces of the cabinet body should be wiped with a warm, damp soft cloth.

Note:

• Do not sprinkle water directly on the cabinet body, lest the insulation performance of electrical components decrease and metal parts rust.
• Do not use hot water, corrosive detergent or organic solvent to clean the cabinet body.
• Do not place heavy objects on top of the equipment, as the equipment may deform under pressure.
• The air switch on the back of the case can not only contact and open the power circuit, but also provide immediate protection in the event of short-circuit faults, severe loads and under voltage in the power circuit, and it can also be used to start the compressor infrequently to protect the equipment.

Equipment Discontinuation
Deactivation: If the equipment is stored in an unsupervised area for a long time and not used, the power supply should be cut off and the inner and outer surfaces of the cabinet body should be cleaned with a warm, damp soft cloth, aired and sealed. The equipment must be locked to ensure that children cannot open the freezer door.
Scrapping: When the equipment reaches the end of its service life, it should be scrapped and must be handed over to a qualified professional recycling agency for disposal per local regulations. Non-professionals are not allowed to disassemble and break down the equipment without authorization. The scrapped equipment should be placed in a designated area inaccessible to children to avoid danger.

Troubleshooting and Maintenance Services

Any product may fail. Please observe the operation of equipment in time during use. If there is any abnormality, please check and handle it according to the following table first. If the abnormality can’t be changed, please inform our service center in time, and we will serve you wholeheartedly to avoid losses. Fan motor replacement time: about 6 years; Service life of the product: 10 years.

make sure power plug is plugged in, not loose. Please make sure the power fuse is not disconnected. Please make sure the supply voltage is appropriate, not too low or too high.
Compressor is not running| Please make sure that the temperature is set correctly. Please check whether the temperature inside the cabinet is too low.
The temperature does not reach the set value| Please make sure that the door is closed tightly and don’t open it too many times during a short time. Please don’t put too many items in at one time. Please make sure that the ambinet temperature is not too high.
High noise| Please make sure that the cabinet is placed on a flat ground. Please make sure that the cabinet does not contact the wall.
Condensation on cabinet body surface| In rainy and humid seasons, door condensation is normal, and it shall be wiped off with a dry doth.
Abnormal smell| Equipment needs to be cleaned. Items with heavy smell are not packed.
The door is not closed properly, and the cool air leaks| After the equipment is used for a period of time, the door seal becomes hard and deformed. Maintenance method: Blow the deformed part of the hot seal with a blower to soften it, and then dose and compress it after the door seal becomes soft.
The alarm lamp flashes and the buzzer is triggered| Please make sure that it will be automatically eliminated after running for a period of time when the items are just put in and the temperature has been stable. Please make sure that the alarm is generated for door opening since the door is not locked. Please make sure that it will be automatically eliminated after running for a period of time because of low battery. Please make sure that the temperature does not exceed the standard.
Lighting damage (refrigeration equipment)| Please call the after-sales telephone and contact after-sales service personnel of MELING BIOMEDICAL for replacement. Please do not replace the parts by yourself.

The following conditions are not faults

1. When the compressor starts and stops, the equipment parts will make a slight impact sound;

2. When overheated items are put in after the door is opened, high temperature alarm and high humidity alarm will be triggered in the control system (if this function is available, please refer to the alarm display table);
   Solution: Put the items into the equipment after they are naturally cooled. Put the items in small quantities in batches, and do not put too much at a time. After the system runs stably, The high temperature alarm and low temperature alarm will be released automatically.

3. Slight sound of water caused by refrigerant flowing in the pipeline.

Notes:

• The equipment can only be repaired, maintained or improved by the engineers certified by MELING BIOMEDICAL, so as to ensure the normal operation of the equipment and the compliance with corresponding safety standards.
• Please clean and disinfect the equipment before notifying the maintenance engineer; During the warranty period of the equipment, the Company will not undertake the warranty obligation if the fault or damage is caused by improper use of the user.
• Ambient temperature for storage: -40°C ~ +55°C, relative humidity: 10% ~ 90%.

Specifications

Model| Ambient temperature| Climate type| Refrigerant and loading amount| (Rated) voltage (V~)| Rated frequency (Hz)| Temp Range (°C)| Volume (L)| (Rated) current (A)| Net Weight (kg)| Exterior Dimensions (DxWxH)

(mm)

---|---|---|---|---|---|---|---|---|---|---
YCD-EL300 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.76| 95| 640×700×1876
YCD-EL300

(HIPS)

| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.76| 87| 640×700×1842
YCD-EL300 (Stainless steel liner)| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.76| 104| 640×700×1876
YCD-EL450 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/28g Freezer:R600a/65g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 1.84| 144| 735×810×1960
YCD-EL450 (HIPS）| 16-32℃| N| Refrigerant:R600a/28g Freezer:R600a/65g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 1.84| 127| 735×810×1960
YCD-EL450 (Stainless steel liner)| 16-32℃| N| Refrigerant:R600a/28g Freezer:R600a/65g| 220-240| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 1.84| 162| 735×810×1960
YCD-FL289 (Stainless steel liner)| 16~32°C| N| Refrigerant:R134a/45g Freezer:R290/42g| 110| 60| Refrigerant:2~8°C Freezer:-10~-40°C| 289| 5.52| 143| 640×700×1845
---|---|---|---|---|---|---|---|---|---|---
YCD-EL300 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/22g Freezer:R600a/60g| 110| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 3.17| 95| 640×700×1876
YCD-FL450

(Spraying aluminum

liner)

| 16~32°C| N| Refrigerant:R290/30g Freezer:R290/42g| 110| 60| Refrigerant:2~8°C Freezer:-10~-40°C| 450| 4.41| 144| 735×810×1960
YCD-EL450 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/28g Freezer:R600a/50g| 110| 60| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 3| 144| **** 735×810×1960
YCD-EL300

(Sprayingaluminum liner)

| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.37| 95| 640×700×1876
---|---|---|---|---|---|---|---|---|---|---
YCD-EL300 (HIPS)| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.37| 87| 640×700×1842
YCD-EL300 (Stainless steel liner)| 16~32°C| N| Refrigerant:R600a/20g Freezer:R600a/60g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 300| 1.37| 104| 640×700×1876
YCD-EL450 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/26g Freezer:R600a/75g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 2.10| 144| 735×810×1960
YCD-EL450 (HIPS）| 16-32℃| N| Refrigerant:R600a/26g Freezer:R600a/75g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 2.10| 127| 735×810×1960
YCD-EL450 (Stainless steel liner)| 16-32℃| N| Refrigerant:R600a/26g Freezer:R600a/75g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-26°C| 450| 2.10| 162| 735×810×1960
YCD-FL289 (Stainless steel liner)| 16~32°C| N| Refrigerant:R600a/20g Freezer:R290/45g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-40°C| 289| 2.5| 143| 640×700×1845
YCD-FL450 (Spraying aluminum liner)| 16~32°C| N| Refrigerant:R600a/30g Freezer:R290/42g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-40°C| 450| 3.12| 146| 735×810×1960
YCD-FL450 (HIPS)| 16~32°C| N| Refrigerant:R600a/30g Freezer:R290/42g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-40°C| 450| 3.12| 125| 735×810×1960
YCD-FL450
(Stainless steel liner)| 16~32°C| N| Refrigerant:R600a/30g Freezer:R290/42g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-40°C| 450| 3.12| 164| 735×810×1960
YCD-FL519 (Stainless steel liner)| 16~32°C| N| Refrigerant:R600a/26g Freezer:R290a/65g| 220-240| 50| Refrigerant:2~8°C Freezer:-10~-40°C| 519| 3.57| 186| 740×910×1972

• The foaming agent of this product is cyclopentane.

Accessories

YCD-FL289,YCD-FL519 do not have keys.

• The specific accessories shall be subject to the physical objects received.
  Zhongke Meiling Cryogenics Company Limited
  Address: No 1862 Zishi Road, Hefei City, Anhui, P.R. China Production
  Address: No.1862 Zishi Road, Economic and Technological Development Zone, Hefei City
  Post Code: 230601
  Material Code: 890375566
  Email: zkmeiling@zkmeiling.com; technical.service@zkmeiling.com
  Website: www.melingbiomedical.com
  Production Date: See nameplate on the freezer body
  Prepared in: August 2023

References

• Ultra Low Temperature Freezer,Lab Refrigerator And Freezer,Pharmacy Refrigerator Freezer

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