Some customers ask how the cold storage room can be maintained to make the service life of the cold storage longer? In fact, simple maintenance and maintenance can be carried out by yourself, but some regular and technical maintenance and maintenance require professional refrigeration technicians to do. So how often do some routine maintenance and maintenance work? What aspects should be maintained and maintained?1. Routine inspection and maintenance scope every 700 hours　　Compressor oil level check and add    　　 Compressor current check　　 Refrigerant pressure check and addition　　 Cold storage lighting condition inspection　　 Cold storage insulation status inspection　　 Cold storage door inspection　　 Cold storage control loop working condition inspection2. Routine inspection and maintenance scope every 5000 hours　　Condenser cleaning　　 Fan noise detection　　 Refrigerant supplement　　 Dry filter replacement filter element　　The slab support is firm　　 electric heating tube correction　　Outer machine bracket paint　　 cold storage daily maintenance　　Insulation part: the library board avoids damage, scratches, dents, and corrosion　　 Sealing protection: timely remedy the part of the seal failure to prevent cold escape　　Refrigeration system: check the status of fans and compressors, and deal with and repair them in time　　Electrical part: check whether the temperature control system data is accurate at any time, etc.　　 cold storage room is a kind of low-temperature freezing equipment, mainly used for constant temperature storage of food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, chemical raw materials, etc. Because it is used very frequently in daily life, it is necessary to pay attention to its maintenance and maintenance to extend its service life.　　The cold storage room is installed or used again after being out of service for a long time, and the cooling rate should be reasonable: it is advisable to control it at 8-10℃ every day, and keep it at 0℃ for a period of time.　　 Cold storage storage board maintenance, pay attention to the collision and scratches of hard objects on the storage body during use. Because it can cause depression and corrosion of the library board, it will seriously reduce the local insulation performance of the library body.　　 Cold storage sealing part maintenance, because the fabricated cold storage is made up of several insulation boards, there are certain gaps between the boards. These gaps will be sealed with sealant during construction to prevent air and moisture from entering. Therefore, in use, repair some parts where the seal fails in time.　　 Cold storage floor maintenance. Generally, the floor of a small assembled cold storage uses insulation boards. When using the cold storage, you should prevent a large amount of ice and water on the ground. If there is ice, you must not use hard objects to beat during cleaning to prevent damage to the ground.         

There are three types of mildew removal methods for cold storage room: mechanical removal, physical removal and chemical removal.　　 (1) Mechanical mold removal method　　 is the part that performs cleaning and eradication of mold. It is also combined with other mold removal methods. There is an air washing method in the mechanical mold removal method, which is to install a water sprayer at the air inlet, and the air is circulated through the water to wash the mold spores. This method is like the current wet air cooler. , Can play a role in reducing mold.　　 (2) physical mold removal method of cold storage room　　 is the use of temperature, humidity, ultraviolet light, high frequency electricity and copper wire mesh filter to remove mildew. The temperature for mold growth is generally between -6°C and 40°C. For this reason, mold growth is rarely seen in low-temperature storage. Hot alkaline water can also be used to kill mold on tools and equipment. The growth of mold is closely related to temperature, so temperature control can only be used appropriately.　　Using ultraviolet light to remove mildew is a better method. It can sterilize, remove mildew, and also has some deodorizing effects. But this can only work on the directly irradiated part. Generally, 0.33 to 3 watts of ultraviolet radiation per cubic meter can be used to kill microorganisms when irradiated on an area of 2 meters away for 6 hours. But the effect of ultraviolet light is affected by temperature and humidity. The closer to the normal temperature of microbial growth, the higher the humidity, the stronger the ability to sterilize and remove mildew. Ultraviolet light can promote the oxidation of fat, so be careful when using it. The copper wire mesh filter is equipped with a copper wire mesh at the upwind, which can kill some molds.

        In addition to mechanical and physical removal of mildew in cold storage room, there are also chemical removal methods.　　 However, there are many chemical methods for removing mildew of cold storage room, and most of them are lactic acid, carbon dioxide, ozone, formaldehyde, bleaching powder, sodium fluoride, sodium hydroxybiphenolate, etc.　　 1. Lactic acid method: It is a reliable method of disinfection, it can remove mold, sterilize, and deodorize. The method of use is to clean up the warehouse first, use 1 ml of crude lactic acid per cubic meter, add 1 to 2 parts of water to each part of lactic acid, put the mixture in an enamel basin, and place it on an electric stove to heat and evaporate. General requirements Control the liquid medicine to evaporate in about half an hour to 3 hours. Then turn off the electric furnace and seal the Kumen for about 6 to 24 hours so that the lactic acid can fully interact with bacteria or molds in order to achieve the purpose of disinfection. It has been proved by the experiment of the "Experimental Team of Mould and Virus Removal" of the Meat Company of Hunan Provincial Bureau of Commerce. Lactic acid disinfectant is one milliliter per cubic meter, which has a certain effect on removing mold and sterilizing the warehouse. After disinfection, the bacteria in the warehouse are reduced by 70%, and the mold is reduced by 70%.　　 2. Carbon dioxide method: It can not kill mold at any concentration, it can only delay the growth of mold. When the concentration of carbon dioxide in indoor air reaches 40% at 0°C, the growth of mold can be completely prevented. However, when its concentration in the air exceeds 20%, the meat becomes discolored due to the formation of denatured hemoglobin. It is generally believed that when the indoor carbon dioxide concentration is 10% at 0°C, the shelf life of chilled meat in the cold storage room can be extended to more than double.　　 3. Ozone method: It is a better method, it can not only sterilize but also remove mildew and odor. In this way, an ozone generator should be used to crack two atoms of oxygen in the air into two atoms of ozone. The ozone formed is injected into the cold storage, and its concentration is about 1 to 3 mg/m3. However, ozone is a strong oxidant, which can fade lean meat and oxidize fat. At the same time, ozone is irritating to human mucosa, so care should be taken when using it.　　 4. Formaldehyde method: Formalin steam method. This method can detoxify and sterilize, but formalin smells so great that if it is absorbed by meat, it cannot be eaten. At the same time, formalin is very irritating to humans, so pay attention to safety when using it. Use this method to empty the library first, clean it up, generally use 15 ml of formalin per cubic meter. There are two ways to turn formalin into steam: one is to put formalin in a closed barrel and use a tube to pass it into the cold storage, and then burn it with fire; the other is to put formalin in an open barrel Put it in the cold storage, the operator will put in an appropriate amount of potassium permanganate or quicklime, and then add some water, when the gas is generated, the personnel go out and close the door. After a few hours of formalin steam sterilization, ammonia water is placed in the room to absorb the smell of formalin, and it is completed after ventilation and sterilization.　　 5. Bleaching powder method: It is scrubbed with a 4% bleaching powder solution, which has a good disinfection effect. If adding 7 parts of caustic soda to 5 parts of bleaching powder is better, disinfect for a few hours for ventilation and exhaust.　　6. Sodium fluoride method: The wall is painted with a mixture of 2% sodium fluoride and 20% kaolin, which can be mold-free for 1 to 2 years at 0°C.　　7. Sodium hydroxybiphenol method: Use 2% sodium hydroxybiphenol solution to brush and remove mold. This method does not allow the smell to be passed on to the meat and it will not corrode the utensils, but protective measures must be taken when painting.

How to regulate the operation of cold storage and save electricity? 1. Reasonable use of cold storage roomThe power consumption of the cold storage room is calculated by the running time of the cold storage of the cold storage. In summary, it consists of two parts: one is the cooling capacity of the goods when they are stored in the cooling and cold storage; the other is the cooling consumption of the cold storage itself (ie Protection structure) and the heat of the operator. The key to saving electricity is to increase the utilization factor of cold storage. The cold storage with the lower utilization factor consumes more cold capacity and wastes more electricity.In actual operation, the power equipped with refrigeration compression is selected according to the cooling capacity of the cold storage, and the cooling capacity of the refrigeration unit is greater than the cold consumption of the cold storage. When the cold storage is operating in the off-season, because the cold storage stores less goods, it consumes a lot of electricity compared to the operation of the refrigeration unit, and wastes electricity. Therefore, in the off-season, the goods in several cold storages can be stored centrally according to the actual situation to reduce energy consumption.　　2. Refrigerator indoor lighting system　　 The energy saving of cold storage lighting should be based on safety and reasonableness from the perspective of energy saving and environmental protection, and comprehensive consideration should be given to the area and height of the cold storage. The lighting of the cold storage room is usually concentrated in the work area. On the premise of ensuring the safe work of operators, unnecessary lights should be turned off in time to reduce the heat load and power consumption of the warehouse. At the same time, lighting fixtures with low energy consumption, high efficiency and excellent quality should be used as much as possible to reduce the frequency of damage and replacement of the lamps. The LED lighting system has the advantages of environmental protection, energy saving, uniform lighting, high low-temperature luminous efficiency, and high power supply efficiency. It is a promising new type of light source and the future development direction of the indoor lighting system of the cold storage.　　 3. Regularly check the refrigeration system to ensure that the evaporator has good heat exchangeData shows that when there is a 0.1mm thick oil film in the evaporator coil, in order to maintain the set storage temperature requirement, the evaporation temperature needs to be reduced by 2.5°C, and the power consumption will increase by more than 10%. When the scale on the wall of the condenser water pipe reaches 1.5 mm, the condensation temperature will increase by 2.8°C, and the power consumption will increase by 9.7%. When air is mixed into the refrigeration system and its partial pressure reaches 0.196 MPa, the power consumption of the unit will increase by about 18%. Therefore, it can be seen that it is very important for the evaporator of the refrigerator refrigeration system to regularly discharge oil, clean the scale of the condenser and discharge air.       4. Reasonable use of day and night temperature difference management　　 my country has a vast territory, and many areas have large temperature differences between day and night. The temperature difference between day and night in marine climate zone is usually 6~10℃, while that in continental climate zone can reach 10~15℃. The ambient temperature at night is low, and the night start time can be adjusted and extended according to the storage characteristics of the product. Because the condensation temperature is relatively low, it is conducive to the energy saving of Fuyang cold storage.