How to maintain a laboratory liquid nitrogen machine?

　　With the rapid development of industry, nitrogen has been widely used in the fields of chemical engineering, electronics, metallurgy, food, and machinery. So,Laboratory Liquid Nitrogen GeneratorHow to maintain it?

　　How to maintain a laboratory liquid nitrogen generator?

　　1. The carbon molecular sieve is the core of small liquid nitrogen equipment. In order to prevent pollution and loss of function, strictly control the oil content of the air compressor exhaust, and regularly replace the filter cartridges and activated carbon in the oil remover.

　　2. When the laboratory liquid nitrogen generator is running, if a large amount of black dust is sprayed from the exhaust port of the silencer, stop the machine immediately to find out the reason to prevent more serious carbon molecular sieve pulverization.

　　3. Regularly check the pressure gauge of the compression cylinder. If there is no pressure or pressure drop during desorption, it indicates that the cylinder cannot compress the carbon molecular sieve normally, and the fault should be eliminated in time to prevent the carbon molecular sieve from pulverizing due to movement without being compressed. When a carbon position alarm occurs due to gap reorganization or normal loss of carbon molecular sieve, adding carbon molecular sieve should be stopped immediately. The storage, transportation, and loading and unloading of carbon molecular sieve will not harm the human body. Safety glasses, respiratory filters, and exhaust fans can be worn when filling carbon molecular sieve. After filling, the contacted skin should be washed with soap.

　　4. When faults such as nitrogen purity alarm, carbon position alarm, and adsorption pressure drop occur, stop the machine immediately, analyze and find the cause, and eliminate the fault.

　　5. When the laboratory liquid nitrogen generator is idle for a long time or used intermittently, start the machine at least once a month, and run for four hours each time, to ensure that the equipment is always in standby status.

　　6. When the equipment is running continuously, frequently check the airtightness of the pipe joints, and there should be no leakage. Regularly check whether all pneumatic valves and freeze dryers are operating normally.

　　What are the common faults of laboratory liquid nitrogen generators?

　　1. Refrigerant leakage: Refrigerant leakage directly causes the refrigerator to fail to cool, so it is necessary to check and repair the leakage.

　　2. Low pressure: Most of them are caused by machine medium leakage, which needs to be checked and repaired.

　　3. High-pressure air-cooled high-speed machine, it is necessary to check the space and ventilation of the high-speed machine. If the space is small and the ventilation is poor, a simple high-pressure alarm can be triggered. In addition, if the compressor exhaust pressure is too high, a high-pressure alarm will also be triggered. If depressurization is needed, simply activate the pressure relief valve to release some air.

　　4. The compressor does not work. Check if the machine's pump is normal. To see if the water pump is normal, check whether the machine's water tank can be refilled, and then check the current.

　　What are the characteristics of laboratory liquid nitrogen generators?

　　1. Easy to use: The laboratory liquid nitrogen generator has a compact structure, overall skid-mounted installation, small footprint, no need for infrastructure investment, and low investment. Only when the power is connected can nitrogen be prepared on-site.

　　2. Automatic operation through electromechanical integrated design: Imported control automatic operation, nitrogen flow, pressure purity can be adjusted and continuously displayed, unattended operation can be realized.

　　3. Convenient and fast nitrogen production: Advanced technology and unique airflow distributors make the airflow more uniform. Qualified nitrogen can be provided in about 20 minutes using carbon molecular sieves.

　　4,Laboratory Liquid Nitrogen GeneratorWide range of applications: Protective gas in metal heat treatment processes, production gas in chemical industry and nitrogen purification of various tanks and pipelines, production gas of rubber and plastic products, oxygen removal and preservation packaging in food industry, purification and covering gas in beverage industry, nitrogen and oxygen removal of containers in pharmaceutical industry, protective gas in the production process of electronic components and semiconductors in electronics industry, etc. Its purity, flow rate, and pressure are stable and adjustable, meeting the needs of different customers.