MEDIGUARD MG130 Pharmacy Medical Refrigerator Instruction Manual

MEDIGUARD MG130 Pharmacy Medical Refrigerator

Product Information

Specifications:

• Product Name: Pharmacy/Medical Refrigerator
• Model: MG55/130
• Application: Storage of medical supplies
• Operating Environment: Clean room with humidity not exceeding 80%, good ventilation, and no corrosive gas

Product Usage Instructions

Safety Instructions
When using the Pharmacy/Medical Refrigerator, follow these safety instructions:

• Avoid direct sunlight and exposure to rain.
• Do not touch the equipment with wet hands to prevent electric shock.
• Ensure the equipment is grounded properly and installed on a solid, flat surface to prevent tipping over.
• Use separate special outlets and ensure reliable grounding.
• Do not use power supplies not specified in the equipment design to avoid overheating or short circuits.
• Avoid placing the equipment near flammable items to prevent fire accidents.

Precautions in Use

• The refrigerator should be kept away from rain and stored in a clean room with good ventilation and humidity below 80%.
• Only operate the refrigerator if you are trained and authorized personnel.
• Use only accessories authorized by MediGuard to prevent damage to the equipment.

Installation and Commissioning

• Installation should be done by professional technicians or after-sales maintenance personnel.
• Ensure the equipment is installed on a solid, flat surface to prevent tipping over.
• Use special outlets and ensure reliable grounding during installation.

Frequently Asked Questions (FAQ)

• Q: Can I use accessories not authorized by MediGuard with the Pharmacy/Medical Refrigerator?
  A: No, using unauthorized accessories may lead to adverse consequences and Mediguard will not be responsible for any damages caused.

• Q: What should I do if the equipment falls over during installation?
  A: If the equipment falls over during installation, disconnect it from power and contact professional technicians for assistance to avoid equipment damage or personal injury.

Application Notes

Thank you for choosing and using MediGuard products! For your safe and convenient use and reasonable maintenance of the equipment, please read the Operation Instructions 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 marked in the catalog of the manual. MediGuard 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 MediGuard products, the functions described in the instructions may be inconsistent with those of the products you purchased. Please refer to the physical functions.

• Please read the Attention and Safety Precautions (in 2. Safety Instructions).
• During transportation or use, no violent vibration or collision is allowed and the refrigerator shall be kept away from rain. Store in a clean room with humidity no more than 80 %, no corrosive gas, and good ventilation.
• Pharmacy/Medical refrigerators (from now on referred to as equipment) can only be operated by trained and authorized personnel.
• Maintenance of the equipment can only be completed by MediGuard or an agent authorized by MediGuard
• If the operator encounters any situation not mentioned in this manual, please contact Mediguard or the agent authorized by Mediguard 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 MediGuard. If users would like to use other accessories, MediGuard will not be responsible for the adverse consequences caused therefrom.
• Equipment must be inspected and maintained regularly to ensure good operation of the equipment.

Tips

• Properly use protective equipment (including protective clothing, protective gloves, goggles, etc.)
• Keep good hygiene habits
• Please pay attention to safety when using this product
• Keep clear of obstruction of 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.

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.

• 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 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, to avoid electric leakage; After installation, the power plug must be within reach, so that the power plug 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, to avoid overheating, short circuits, and other faults. For example, connecting 110 V rated voltage products to a 220 V power supply may cause faults such as overheating and equipment burning. This equipment adopts a 220 V/50 HZ AC power supply. 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.
• Do not place the equipment in areas exposed to the sun or rain, to prevent dangers such as short circuits 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 circuits.
• In case of unexpected sounds, 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, to avoid potential safety hazards. In this case, MediGuard 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 the 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.
• To ensure the normal operation and ventilation and heat dissipation of the equipment, the back, left and right sides of the cabinet shall 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 a 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, to avoid accidents when children open the door accidentally.
• When handling the equipment, please be careful not to tip over the equipment, to prevent equipment damage or personal injury.
• When handling, it shall be lifted from the bottom, with the inclined plane not 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 the environment.

Precautions in Use

• Before putting the items into the equipment, please confirm that the temperature in the freezer 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 freezer storage chamber to prevent excessive temperature rise.
• The equipment temperature display value is the temperature at the temperature sensor in the freezer 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.
• When the equipment is not used for a long time, the power supply shall be cut off.

Product Installation

Installation Environment

• Ambient temperature: 16℃ ~ 32℃, the most ideal temperature is 18℃ ~ 25℃, and the air conditioning system shall be used when necessary.
• Relative humidity: ≤80%RH.
• There is no strong vibration or corrosive gas around.
• 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.
• Indoor use, pollution degree 2, and overvoltage category II.
• Input voltage AC single-phase 220V.
• 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
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 normal access to the equipment, to avoid 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;
• Each piece of equipment needs to use a power outlet independently. Please ensure that the current borne by the power outlet shall be ≥10A and that the plug and outlet are firmly connected;
• Check the working voltage before use. In areas with unstable voltage, consider using a voltage stabilizer suitable for equipment load. The power of the voltage stabilizer is greater than 4KW to ensure that the input voltage requirements in the installation environment are met.
• Equipment shall be reliably grounded. If the power cord outlet is equipped with a grounding wire, check whether the grounding is good before use. If the outlet is not equipped with a grounding wire, it must be installed by professional engineers and technicians.

Attention:
Since the ambient temperature has a 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, 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 conditions, 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 number of items in the Refrigerator after confirming the normal performance.
5. Please store items in batches, with the items not exceeding 1/3 of the cabinet 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, 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 Refrigerator 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, 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, to ensure that the Refrigerator is cooled step by step until the temperature required for storing items is reached.
• Electrical appliances without a 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!
• Items shall not be placed directly at the bottom of the Refrigerator, 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.
• To avoid the risk of electric shock, this equipment must only be connected to a supply main with protective earth.
• No modification of this equipment is allowed.
• Do not modify this equipment without the authorization of the manufacturer.
• Protection impairment if used in a manner not specified by the manufacturer.
• The instructions concerning persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, and children playing with the appliance are not required.
• Keep all ventilation openings in the enclosure or, in the structure for the building, clear of obstruction.
• Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by the manufacturer.
• Do not damage the refrigerant circuit.

Product composition and overview

Operating Instructions

Type B control panel
Function description of Type B control panel (Applicable to YC-130L)

• It is a temperature display window, which displays the average temperature inside the cabinet in °C under normal operation; Different prompt characters can be displayed in the setting state (see below for details);

• Door opening indicator: When the refrigerator door is opened, the indicator lights up. After more than 1 minute, the door opening alarm indicator will be on and the buzzer triggered, displaying “do”.

• Fault indicator: When the product runs normally, the indicator is off; The indicator is on for operation abnormality.

• “LIGHT”: After the machine 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 off, it can be turned on when the door is opened and turned off when the door is closed; When the light is off, it does not change when the door is opened or closed. 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-second 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).

• “PRINT “ (optional): The system can keep 7 days of data for printing. Press the print key to print the temperature within the set period.

• In parameter setting mode, reduce the parameter value. For example, when setting the set temperature, reduce the set temperature. When setting the parameter value, press the down button, and the parameter will decrease rapidly.

• In parameter setting mode, increase the parameter value. For example, when setting the set temperature, increase the set temperature value. When setting the parameter value, 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 from the USB flash drive in 12 months.

• is the set/mute key; In case of no alarm state and key unlock state, press , and display the ambient temperature for 5s and then return to normal display; In the unlock state, press for more than 3s, and enter the user menu.
  When buzzer is triggered (including cabinet high alarm, door opening alarm, sensor failure alarm, etc.) and in the button unlock state, press for the first time, and the buzzer stops ringing, and the ambient temperature is displayed for 5s, after which the normal display is resumed (pressing the mute button is only to turn off the buzzer for alarming this abnormal state, for example trouble removal, and the buzzer will be triggered next time for any abnormality). Then press again, trigger the buzzer, display the ambient temperature for 5s, and then resume the display of cabinet temperature and alarm state. In the key unlock state, can be used as a setting key.
  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 of USB data: When the USB interface is connected to the USB flash drive, the buzzer of the recorder beeps once, displaying “ON”, and PDF files of the data of the current month and the previous month are generated in the USB flash drive. After the data transmission is completed, the buzzer beeps once, displaying “End,” and the normal display resumes after 6s.

Note:
When there is less data, “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 a key to cancel the file generation (d00) or generate the PDF file of the record data of the previous months (1-12).
• When the alarm of the digital tube flashes and displays “LoF,” the recorder is not started;

Meanwhile press and key for 3s, and “LoF” disappears, the recorder is started.

Function setting of Type B control panel

1. Power on and turn on the power switch on the back of the cabinet, and the equipment will enter the working state;
2. User parameter settings:
   Unlock: In normal operation state, simultaneously press and key for 3s, and the digital tube displays the parameter code “000”, enter the password “0005” ( (when you enter the user menu password, enter “0099” to restore the key lock password to the default value of “0005”). , and unlock it. Unlock and press the key for 3s, and the digital tube will display the parameter code “PS1,” and enter the setting and adjustment parameters.
   Use or key to scroll the parameters, and the display order is as follows: b1→b2→Set→H→L→n→y→r→S→F→Pt→tH1→P1→Ps1.

Press to confirm the parameter type, and the first parameter name of this type of parameter will be displayed;

1. Use or key to scroll the parameters;

2. Press the key to display the corresponding parameter value;

3. Use or to increase or decrease the value ⑥; Press for more than 3s, save the modified
   parameters and return to the display parameter category.

4. Use to temporarily store the modified values and return to the display parameters;

5. If other parameters are modified, repeat steps ① to ④.

Parameter display

High temp alarm is disabled; When the alarm is over high temp alarm set, H1 will be displayed on the controller
8| L| 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, L1 will be displayed on the controller
9| Pt| 0-240 min| 20| Print interval
10| tH1| 20.0-50.0℃| 40.0| The 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

5. Always off

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

(Set to 5 when the door is a foaming door)

| 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: When the compressor runs, the Heater is on; When the compressor stops, the heater Will automatically off after one min

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

Alarm display

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.

Quick Settings menu

| n| Set logger module time – year| 10~50| | /
y| Set logger module time – month| 1~12| —| /
r| Set logger module time – day| 01~31| —| /
S| Set logger module time – hour| 00~23| —| /
F| Set logger module time – minute| 00~59| —| /
Pt| Print interval| 0~240| 20| min

SCY

|

Temperature data recording period

| 0~240

0: shielded recorder

|

10

|

min

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.

Optional function

Printer

• Automatic printing:
  When the printing interval Pt is not 0, the printer prints the current data every Pt minutes.

• Manual printing:
  When the key is unlocked and the working voltage is normal, press the print key to display “P01” by the digital tube, and press the up key or down key to adjust “P00～P07.” Press the set/mute multiplexing key or print key, and the printer will cancel the manual printing (P00) or print the data recorded in the previous days (1 ~ 7), with the data interval the same as the automatic printing interval.

Printing paper installation:
The printing paper has been installed at the factory. When the paper is used up after a long time, you may purchase the same paper for installation. The installation steps are as follows:

• Click the cylindrical button on the printer to open the cover of the printer;
• Put the printing paper into the printer box and pull the paper head of the roll so that the paper is slightly exposed from the upper part of the box cover after the box cover of the printer is closed;
• Close the box cover.

Remote alarm terminal and RS485 interface

The remote alarm terminal is installed on the back of the cabinet, and the alarm signal is output by the terminal. The load-bearing capacity of the terminal is 30V, 2A DC. Users can choose normally open, normally closed, and common terminals according to their own needs.

Maintenance and Service

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 the working process for the convenience of 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 should be wiped with a warm, damp soft cloth.

Notes:

• Do not sprinkle water directly on the cabinet, 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
• Do not place heavy objects on top of the equipment, as the equipment may deform under pressure.

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 should be cleaned with a warm, damp soft cloth, aired and sealed. The equipment must be locked to ensure that children cannot open the cabinet 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.

Maintenance, Replacement, and Recovery of Rechargeable Batteries
Battery installation position: top of the cabinet and bottom inside the electrical box.

Battery maintenance

1. To prolong the service life of the battery and avoid the product being left unused for a long time, the product must be operated for more than 24 hours every month to facilitate charging.
2. When the equipment has not been used for a long time, it should be connected to the working power regularly (generally once a month), and the power lock switch should be turned on so that the equipment can run for some time to complete charging, and each charging time should be no less than 24 hours;
3. When the working power supply is interrupted, the power lock switch of the equipment shall be turned off in time, otherwise, it will cause power loss in the battery and even permanent damage to the battery in severe cases;
4. The main power switch must be turned off during a long-term power outage or transportation, otherwise, long-term discharge causes power loss in the battery and even permanent damage to the battery, and the display is abnormal after re-energizing;
5. The battery is a consumable, with a service life of about 2-3 years. If the battery is used improperly, such as power loss or reaching the end of battery life, it will cause a low battery alarm (refrigeration is not affected, but there is an alarm failure and influence to the use function of the printer, please contact the after-sales staff of local distributors for replacement).

Battery replacement and recovery

1. Turn off the power switch and pull out the power plug from the outlet;
2. Remove the screws on the electrical box with a screwdriver. (Note: There are high-voltage electrical components in the electrical box, therefore before opening, turn off the power supply, unplug the power plug, and turn off the power lock switch of the refrigerator, and the electrical box can only be opened by a qualified engineer or maintenance personnel).
3. Pull out the battery connecting cable; (Before unplugging the battery fixing cable, pay attention to the cathode/anode of the battery and the sequence of the connecting cables, to prevent burning down the control system due to the installation of the new battery with cathode/anode reversed. Generally, the red wire is connected to the cathode, and the black wire is connected to the anode.
4. Use a screwdriver to remove the fastening screws on the battery fixing plate and take out the battery;
5. The battery model is BT-12M1. 3AT (12V) is suitable for (YC-55L/EL, YC-75L/EL), and the rest of the products are BT-12M4. 0AC (12V4. 0AH);
6. For a replaced battery that can be recycled, please contact the local battery recycling agency.

Tips:
To effectively ensure that the battery replacement meets the requirements of the control system and avoid the influence of improper operation on the system, please contact our after-sales personnel for replacement or guidance.

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.

Problems

|

Causes and solutions

---|---
The equipment does not work| Please make sure that the outlet is energized.

Please make sure the 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.

The 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 the cabinet surface| In rainy and humid seasons, door condensation is normal, and it shall be wiped off with a dry cloth.
Undesirable odor| Equipment needs to be cleaned. Items with a heavy smell are not packed.
The door is not closed properly, and the cool air leaks| Please make sure that the temperature is set correctly.

Please check whether the temperature inside the cabinet is too low.

The alarm lamp flashes and the buzzer is triggered| After the equipment is used for some 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 close and compress it after the door seal becomes soft.
Lighting damage (refrigeration equipment)| Please call the after-sales telephone and contact the after-sales service personnel of

MediGuard 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, a 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 high- humidity alarm will be released automatically.

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

Warning:

• The system contains refrigerant under high pressure. Do not tamper with the system. It must be serviced
• by suitably qualified persons only.
• Connect to potable water supply only.
• Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.
• If the symbol ISO 7000-1701 (2004-01) is used, its meaning shall be explained.
• To reduce flammability hazards the installation of this appliance must only be carried out by a suitably qualified person.
• The refrigeration system is under high pressure. Do not tamper with it. Contact qualified service personnel before disposal.

Circuit Diagram

Note:
Some models don’t have the optional parts within the dotted line, the detail is subject to the available products.

References

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

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