1. The reason for the burnout of the industrial chiller compressor may be due to a lack of phase in the power supply. Check if one or both phases of the winding have turned black and confirm if the coil is damaged;

　　2. The reason for the burnout of the industrial chiller compressor may be that the contactors and contact points in the circuit are not closed, and the connection points of the wires are loose;

　　3. The reason for the burning of the compressor in the industrial chiller unit may be due to motor overload, excessive current and overheating during prolonged operation of the motor;

　　4. The reason for the burnout of the industrial chiller compressor may be due to frequent start-up and braking of the chiller.

　　Routine testing:

　　During the use of industrial chillers, it is necessary to always pay attention to the issue of compressor operating noise. If there is a significant increase in noise, based on the experience introduced by the factory, it is necessary to timely and effectively complete the shutdown inspection, and on the basis of ensuring normal operation, complete the maintenance work of the industrial cooler compressor.

　　Attention: Once the compressor makes noise, it is necessary to be vigilant. Often, small problems can also cause complex and serious faults in the later stage, such as compressor liquid hammer.

　　Pay attention to the pressure gauge:

　　During use, it is necessary to pay attention to the specific values of the pressure gauge of the industrial chiller at any time. If there is a large range of abnormal situations, it is necessary to carefully check. The specific inspection method can be based on the relevant methods introduced by domestic industrial chiller manufacturers, and all inspection processes can be completed to avoid pressure problems affecting the specific working efficiency of the industrial chiller compressor and causing an increase in electricity consumption, Improve the energy consumption of industrial chillers. Attention: The pressure gauge of the chiller includes high-pressure pressure gauge, low-pressure pressure gauge, etc.

　　Measurement of operating temperature:

　　During the operation of industrial chillers, it is necessary to measure the specific operating temperature of the industrial chiller compressor by hand or equipment at any time. If the temperature is too high, it means that the industrial chiller is in an overloaded operating state. At this time, it is necessary to measure the current and voltage to achieve fault detection and ensure that the industrial chiller compressor is in an absolutely safe operating state and reaches the appropriate operating temperature, Complete the entire operation process.

　　Attention: If the temperature of the compressor is too high, it may also be due to low fluorine content, low compressor power, long capillary tubes, poor condensation effect, temperature control failure, and compressor oil shortage, which poses great harm. Special attention should be paid.

　　The downside of high compression ratio:

　　The compression ratio of any type of chiller should not be too high. The compression ratio is easy to understand, which is the ratio of the degree to which a gas is compressed. For example, if the previous gas was 10 and the compressed gas was 1, the compression ratio would be very high. Therefore, it can be concluded that if the compression ratio is high and the value is large, it is certain that the working load of the compressor will be greater. There is no doubt about this.

　　The compression ratio is too high, as mentioned above, which is most likely to cause the load of the compressor to increase. When the load is high, the work efficiency will decrease and the consumption of electrical resources will increase.

　　Due to the increase in compression ratio of the compressor, the internal temperature will be higher, which not only affects the properties of the refrigerant, but also may lead to a decrease in the viscosity of the lubricating oil and a decrease in lubrication effect. Lubricating oil that cannot play its due role in the compressor will increase the probability of compressor wear.

　　In addition, high pressure, also known as exhaust pressure, will increase due to an increase in compression ratio, bringing greater heat dissipation burden to the condenser. If the fan or water cooling system cannot correspondingly improve the heat dissipation capacity, the heat dissipation effect of the condenser will inevitably be poor, and the water cooling cooler system will not be able to bear the heat dissipation work of the equipment.

　　The solution is as follows:

　　1. Consideration should be given to selecting appropriate refrigerant to control the compression ratio of the compressor.

　　2. It is recommended to check for copper pipe blockage and replace the filter regularly. Replacing the filter can improve the ability of the filter to filter impurities that may be generated in the water cooling cooler system and in the frozen lubricating oil, thereby preventing pipeline and valve blockage.

　　It is also necessary to consider whether insufficient refrigerant has caused the suction pressure, and high suction pressure can lead to problems such as high compression ratio and exhaust temperature. That is to say, the compression ratio, exhaust pressure, and exhaust temperature can be reduced by increasing the suction pressure.

　　3. It is also possible to perform separate additional cooling on the compressor, which can solve the problems of high exhaust pressure and temperature caused by high compression ratio.

　　Generally, when using chillers, it is easy to find that different types of chillers exhibit varying degrees of frosting faults. Many existing frosts limit the working power of the evaporator and cause the equipment to operate under overload.

　　At this moment, if users are unable to perform defrosting treatment in a timely and effective manner, it may lead to an increasing power consumption of the chiller. Even under the premise of high energy consumption, the cooling performance of chillers is still relatively low, which cannot meet the operational needs of enterprises.

　　Due to factors such as equipment and operating environment, over 90% of chillers will experience frost formation during operation. If the frosting of the chiller is severe, professional chiller manufacturers advocate that a careful inspection should be carried out before operating the chiller, in order to promptly detect and handle various frosting faults of the chiller, and to maintain long-term stable operation of the equipment. As the operational stability of the equipment continues to increase, the probability of the chiller experiencing frost failure continues to decrease.

　　Regarding the chiller unit, the frost problem is very serious regarding the damage caused by the chiller unit. If the chiller experiences frost failure, in order to ensure the safe and stable operation of the equipment, it is necessary to promptly use professional methods to complete the troubleshooting process.

　　If the continuous frost failure of the equipment cannot be prevented through shutdown, then there must be a malfunction in the components of the equipment, and it is necessary to handle it in a timely manner. If the optimal processing time is incorrect, the safety of the chiller operation will inevitably be affected, and even the power consumption of the equipment will continue to increase, which is not conducive to the long-term use of chillers by enterprises.

　　In order to achieve better application results, professional chiller manufacturers advocate timely treatment of the chiller unit, relying on the technology of hot air defrosting to timely melt the frost that occurs in the chiller unit. It can maintain the internal and external absence of any frost in the chiller, ensure the safe operation of the chiller, prevent various malfunctions, and ensure the safe and stable operation of the chiller.

　　If there is a frost fault in the chiller, the operating power of the equipment will be directly affected. In order to better utilize chillers, professional chiller manufacturers advocate that enterprises must develop a good luck transfer plan. Using chillers within the scope of the plan can reduce the operating costs of enterprises and ensure stable power supply for operation.

　　In the event of frost failure, in order to prevent affecting the operational stability of the equipment, it is necessary to adjust the operating time of the equipment in a timely manner, and formulate a suitable application plan for the enterprise when using the chiller. By preventing equipment from running overloaded, it can reduce the occurrence of frosting faults, extend the service life of the equipment, and reduce the cost of using chillers for enterprises.

　　1. Increase the flow of cooling water and the heat dissipation and ventilation of water tanks and towers.

　　The cooling water in the water tank of the air-cooled cooler and the cooling water tower of the industrial water-cooled chiller exists for the cooling and heat exchange of the condenser. It can take away the heat generated by the compressor’s operation. If the cooling water flow rate and the heat dissipation and ventilation capacity of the air-cooled industrial chiller water tank and the water-cooled industrial chiller water tower can be guaranteed, the cooling water temperature can be maintained within a limited range to maximize the cooling of the compressor.

　　2. Directly reduce the exhaust temperature of the refrigeration compressor.

　　The so-called direct reduction of the exhaust temperature of the compressor can be achieved by reducing the compression ratio and load of the compressor. Although reducing the compression ratio may reduce the efficiency of the compressor, it can solve the problem of high exhaust temperature of the compressor.

　　3. Reasonably utilize refrigerant.

　　Different types of refrigerants have different exhaust temperatures, and in addition to the common R22, there are also refrigerant types such as R134a. Users should add different refrigerants according to the requirements of industrial chiller manufacturers.

　　Firstly, an important factor is to ensure that the cooling system of the air-cooled cooler is in good working condition. This means that it is necessary to regularly inspect and maintain the various components in the cooling system to ensure their normal operation. Regularly clean and replace the condensate or water pipes in the cooler to ensure smooth cooling water flow and ensure that the pipes are not clogged or leaking.

　　In addition, timely replacement of filters in cooling water and disposal of residues are also necessary. These measures can effectively reduce the resistance of the cooling system, improve the cooling effect, and thus reduce the impact of exhaust temperature.

　　Secondly, the use of efficient heat exchangers is another key factor in reducing the exhaust temperature in screw air-cooled coolers. The heat exchanger is the core component for heat transfer in air-cooled coolers, and its design and selection are crucial for controlling exhaust temperature.

　　Choosing a heat exchanger with high heat transfer efficiency and good heat transfer performance can significantly improve cooling efficiency and reduce the impact of exhaust temperature. At the same time, optimizing the structure and tube bundle layout of the heat exchanger is also crucial, as it can improve fluid fluidity and heat transfer efficiency, thereby further reducing exhaust temperature.

　　In addition, adjusting the working parameters and control strategy of the air-cooled cooler can also reduce the impact of exhaust temperature. By reasonably setting the operating parameters of the unit, such as cooling water temperature, cooling water flow rate, condensation and evaporation pressure difference, the best cooling effect can be achieved. In addition, adopting advanced control strategies such as variable frequency speed regulation and load optimization control can improve the operational stability and efficiency of the unit, thereby reducing the impact of exhaust temperature.

　　1. Regular maintenance: The refrigerant leakage of the chiller is usually caused by aging of the pipeline, prolonged use of the machine, and lack of regular maintenance. Therefore, regular inspection and maintenance are important measures to avoid leakage of the chiller.

　　2. Timely handling: When refrigerant leakage is found in the chiller, it is necessary to handle it in a timely manner and use professional tools for inspection and repair to avoid greater safety hazards.

　　3. Equipment replacement: If the chiller is too old and requires a high cost of repair, then considering replacing it with a new equipment is also a good choice.

　　When dealing with refrigerant leakage, the evaporator can be removed and welded, and the disassembly method is:

　　1. After identifying the missing points, mark them properly;

　　2. If there is still refrigerant in the refrigeration system, it is necessary to first store the refrigerant;

　　3. Use two 8-inch or 10-inch wrenches to remove the indoor unit connection lock nut and remove the right electrical box of the indoor unit;

　　4. Remove the fixed pipes and clamps at the back of the evaporator, and remove the left and right positioning screws of the indoor evaporator;

　　5. Gently lift the pipeline with your left hand from the back of the indoor unit to move the evaporator forward. After pulling out the evaporator 5cm with your right hand, rotate the evaporator 90 degrees with both hands and pull it out along the pipeline (pay attention to both hands operation, do not touch the fins).

　　After removing the evaporator, place it in a flat and clean place, use a dry cloth to wipe off the oil stains at the leakage point. The leakage point is welded with silver, and after pressure inspection to confirm that there are no leaks, install the evaporator back into the indoor unit in the reverse order of disassembly. Of course, there are many possibilities for refrigerant leakage, not just the evaporator with leakage points, which requires gradual inspection.

　　1、 Check whether the cooling load exceeds the range of the chiller

　　First of all, when the cooling capacity of the 20t chiller is insufficient, we need to check whether the cooling load exceeds the range of the chiller. The refrigeration load includes the cooling load of the refrigeration equipment and the indoor heating load. If the refrigeration load exceeds the capacity of a 20 ton chiller, it will result in insufficient cooling capacity of the chiller.

　　At this point, we can determine whether the cooling capacity of the 20 ton chiller is sufficient by calculating the cooling load. The specific steps are as follows:

　　1. Calculate the cooling load of the refrigeration equipment. The calculation methods for different refrigeration equipment here are different, but generally factors such as the type, quantity, and operating time of the refrigeration equipment should be considered.

　　2. Calculate the indoor heat load. Indoor heat load includes external heat transfer load, heat load generated by internal personnel and equipment, etc.

　　3. Add up the cooling load of the refrigeration equipment and the indoor heating load to obtain the total cooling load.

　　4. Calculate the cooling capacity of the chiller and determine whether it is sufficient to withstand the total cooling load.

　　2、 Check whether the working parameters of the chiller are normal

　　Secondly, when the cooling capacity of the chiller is insufficient, we need to check whether the working parameters of the chiller are normal. The basic parameters of chiller operation include refrigerant flow rate, pressure, temperature, etc. The changes in these parameters will directly affect the refrigeration performance of the chiller.

　　If the working parameters of the chiller are abnormal, it will lead to a decrease in cooling efficiency and even a problem of insufficient cooling capacity. Therefore, we need to check the various working parameters of the chiller, including:

　　1. Flow rate and temperature of cooling water

　　2. Pressure and temperature of refrigerant

　　3. Cleanliness of evaporator and condenser

　　4. The working condition of the compressor

　　By checking the working parameters of the chiller, we can understand the specific working conditions of the chiller and determine whether there is a problem of insufficient cooling capacity.

　　3、 Check the operating status and maintenance of the chiller unit

　　Finally, when the cooling capacity of the chiller is insufficient, we also need to check the operating status and maintenance status of the chiller. The 20 ton chiller is a complex equipment that needs to be maintained in good operating condition and maintenance to ensure its normal operation and cooling effect.

　　Therefore, we need to conduct a comprehensive inspection and maintenance of the chiller unit, including:

　　1. Regularly inspect and clean all components of the chiller unit

　　2. Regularly replace materials such as cooling water and refrigerant

　　3. Timely repair of faults and damage to the chiller unit

　　4. Regularly maintain and repair the chiller unit

　　By inspecting the operation and maintenance status of the 20 ton chiller, we can identify and solve the root cause of insufficient cooling capacity.

　　1、 Machine room selection

　　Firstly, the installation of chillers should be carried out in a computer room with sufficient lighting and ventilation. The air quality in the computer room should also be suitable, and there should be no pollutants such as dust and smoke. In addition, the ground of the computer room should be flat and have a load-bearing capacity of no less than 500kg/m ^ 2. The computer room should be separated from the pipelines between the power distribution room, water treatment room, and chilled water system to avoid affecting the temperature of the computer room. In addition, the machine room should maintain safe ventilation and be equipped with Automatic fire suppression system and security access control system.

　　2、 Installation environment

　　Before installing an industrial chiller, environmental preparation work needs to be done. Firstly, the environment should be cleaned to avoid damage to equipment caused by dust, rust, etc. At the same time, the installation ground should be cleaned and marked and measured on the ground. Secondly, it is necessary to check whether the installation site allows lifting, handling, and other operations, and whether there is sufficient passage and offline space. At the same time, the import, export, and power supply of the machine should be compatible with the installation environment, supported by stable electricity, and fully consider the safety of the electrical system.

　　3、 Installation steps

　　1. Selection of machine position

　　Firstly, select the placement location of the chiller based on the spatial layout of the computer room. To maintain the normal operation of the machine, the center of gravity should be allocated to the support area, control machine vibration, and leave sufficient space for machine operation and maintenance.

　　2. Ground treatment

　　Place the machine on a stable ground. The ground should be flat and smooth, and its load-bearing capacity should not be less than 500kg/m ^ 2. Mark and measure on the ground, do not simply place the equipment on the ground. Add brackets on both sides of the equipment to prevent the machine from sliding due to vibration.

　　3. Connection of water pipelines

　　Connect cold water and cooling water pipes according to the needs and actual requirements of the cooling system. When connecting, it is necessary to avoid pipeline vibration and ensure installation quality, such as using special brackets and other damping materials. At the same time, the joints and valves of the water pipeline should be checked for tightness to prevent dangerous situations such as water leakage.

　　4. Electrical connection

　　Connect the electrical wiring according to the requirements of the chiller. Attention should be paid to firmly fixing the wires in the designated direction to ensure their safety and to ensure that the wires are reinforced with the electrical system.

　　5. Start testing

　　After the installation is completed, perform a machine startup test. After the machine has been running for a period of time, check whether various parameters of the machine are normal, such as water flow, water pressure, voltage and current, to ensure the normal operation of the equipment.

　　1、 Monitoring temperature

　　The most basic anti freezing measures for medical refrigerators are to carefully monitor the unit temperature to ensure that it does not freeze or freeze due to low temperatures. A temperature monitoring switch can be installed inside the unit. When the unit temperature reaches a certain threshold, the switch automatically starts to ensure that the unit temperature remains constant within a suitable range. At the same time, temperature comparators can also be installed outdoors. When the outdoor temperature is too low, the unit will automatically shut down to avoid the problem of icing.

　　2、 Maintain traffic

　　Maintaining the flow rate of the unit is another key point for antifreeze in medical refrigerators, especially when used in low temperature seasons. It is important to note that the flow rate of the unit should not be too slow, and the valve at the water inlet can be adjusted to increase the flow rate. If the flow rate is too small, it will cause the water to stop in the internal circulation pipeline, the water temperature is too low, and it is easy to freeze, which will also affect the operation effect of the unit.

　　3、 Water tank maintenance

　　The water tank of a medical refrigerator is a place that is prone to freezing, so it requires special maintenance from us. In cold winter, it is necessary to promptly clean the accumulated water inside the water tank, provide insulation treatment to the outside, install a water tank heater, and ensure that the water does not freeze during circulation. At the same time, it is also necessary to check the sealing of the water tank to ensure that there is no air permeability inside the tank, which can affect the flow and temperature of water.

　　4、 Using antifreeze

　　The phenomenon of freezing in medical refrigerators is largely due to water freezing in low-temperature environments, and the use of antifreeze is one of the most effective methods to prevent freezing in medical refrigerators. Common Antifreeze includes ethylene glycol, propylene glycol, mixed ethylene propanol, etc. These antifreeze solutions have antifreeze functions and can protect medical refrigerators.

　　5、 Regular maintenance

　　Regular maintenance is a necessary means to protect medical refrigerators. Regularly inspect the pipelines, valves, pumps, and other equipment of the unit to ensure their normal operation. At the same time, it is also necessary to clean the sediment and attachments inside the unit to ensure its cleanliness and thermal efficiency, avoid icing, and reduce water leakage.

　　1. The ambient temperature is too low

　　At lower ambient temperatures, if the surface temperature of the air compressor is lower than the dew point temperature (i.e. the temperature at which water vapor condenses into water), moisture will condense into ice. This situation is particularly prone to occur in winter, as the indoor temperature is high while the external temperature is low, resulting in a thin layer of ice near the compressor.

　　2. Excessive air humidity

　　When there is too much water in the air, it will begin to condense into ice, resulting in frost formation. This situation usually occurs in humid environments, such as damp basements or factory workshops.

　　3. Poor system drainage

　　After a period of use, a large amount of water may accumulate inside the air compressor. If the drainage system (such as the drainage valve) is not smooth, it will cause water to not be discharged in a timely manner, ultimately forming frost.

　　4. Cooling or dehumidification system malfunction

　　When the cooling or dehumidification system of an air compressor malfunctions, it can cause moisture in the system to be unable to be eliminated, leading to frost formation. This situation usually requires technical personnel to inspect and maintain the air compressor.

　　In response to the above issues, we can take the following measures to prevent frost formation on the air compressor:

　　1. Control room temperature and humidity

　　Try to maintain a suitable temperature and humidity around the air compressor as much as possible. In winter, indoor temperature can be increased, and equipment such as air heaters and humidifiers can be used to reduce humidity. In summer with high humidity, equipment such as air conditioning and dehumidifiers can be used to reduce humidity.

　　2. Maintenance of cooling system in summer

　　In summer, the cooling system is usually used frequently, so regular inspection and maintenance are required. This includes checking the working status of the cooling system, cleaning the surface of the cooler, replacing the filter, etc.

　　3. Smooth drainage of the system

　　Maintaining the smoothness of system drainage is also important. It is necessary to regularly check the status of the system drainage system, including whether the drainage valves and pipelines are unobstructed. If the drainage is not smooth, it is necessary to clean or replace the drainage system in a timely manner.

　　4. Check the cooling or dehumidification system

　　When abnormal phenomena such as frost formation occur in the air compressor, it is necessary to immediately inspect and repair the cooling or dehumidification system. It is necessary to investigate the cause and handle it in a timely manner to avoid unnecessary losses.

　　1. Daily maintenance

　　During the use of the chiller, it is inevitable to carry out daily maintenance work on various parts, and at the same time, check whether there are cracks, water leaks, oil leaks, damage, and other situations in each part.

　　Before operation, check the surrounding environment for any debris blocking the ventilation openings and check if the power supply is functioning properly.

　　During operation, check whether the chiller has abnormal sound, high temperature, etc., and observe whether the parameters on the panel are normal.

　　After running, close the throttle valve, suction valve, oil cooler, and power supply.

　　2. Regular maintenance

　　During long-term operation, the components of industrial chillers may also be subject to wear and corrosion. If maintenance work is not carried out on the chiller for a long time, it will shorten the lifespan of the chiller itself and even affect the normal operation of the chiller.

　　Regular maintenance and upkeep of industrial chiller systems can not only extend their service life but also improve the production efficiency of enterprises. Bringing greater benefits to the enterprise.

　　Maintenance cycle of industrial chiller system:

　　1. Conduct daily inspections of the chiller.

　　2. Check the unit for looseness, abnormal noise, pipeline blockage, leakage, condenser/evaporator heat dissipation effect, etc. every three or six months, and record the detailed process.

　　3. Inspect the filter, dryer, and lubricating oil system every year and record the detailed process.