Troubleshooting common liquid nitrogen generator malfunctions in the laboratory

　　A nitrogen generator is a device that uses air as a raw material to obtain nitrogen by physically separating oxygen and nitrogen. Industrial nitrogen generators can be classified into three types according to their classification methods: cryogenic air separation, pressure swing adsorption (PSA), and membrane air separation. Any machine is subject to malfunctions. On the other hand, if the pressure displayed on the meter during operation does not reach the set value, this is caused by leakage. A comprehensive leak check of the gas path is necessary, especially the drying chamber and battery. So, let's learn aboutLaboratory Liquid Nitrogen Generatorcommon troubleshooting methods!

　　Check the battery for leaks and damage

　　1. Open the machine side panel and observe the black rubber gasket between the battery plates. Check for any protrusion, deformation, or water immersion. If found, replace the battery;

　　2. After the nitrogen input reaches 5KG of pressure, cut off the power. The battery water channel must be still. If continuous bubbles emerge, it indicates that the battery is faulty;

　　Laboratory Liquid Nitrogen GeneratorNoise during operation

　　This is the sound of the solenoid valve. Use a 14 wrench to adjust and loosen the solenoid valve nut appropriately. Do not tighten it too much. If this doesn't work, disassemble the solenoid valve and clean the inside. The main issue is usually foreign objects inside the solenoid valve. If the problem persists after cleaning, replace it with a new one.

　　Laboratory liquid nitrogen generator outputs gas upon startup

　　After the startup pressure of the laboratory liquid nitrogen generator rises, immediately press the red delay switch in front. Wait 10 minutes after the output pressure deviates from the output before using it again.

　　The laboratory liquid nitrogen generator does not work upon startup, and there is no indication on the display screen

　　1. Check if the power is supplied

　　2. Check if the circuit plugs are properly inserted;

　　3. Check if the fuse is blown. The fuse is located in the power cord receptacle at the back of the machine. It can be pried out with a small Phillips screwdriver or a pointed metal tool. The fuse is 5A;

　　4. Open the instrument side panel and check if the ribbon cable plug on the display board is properly plugged in;

　　5. Check if the indicator lights on the circuit board inside the machine are lit. If not lit, check if the fuse on the circuit board is blown. If blown, replace the 3A fuse. If the display still doesn't show after replacement, replace the power supply;

　　6. The laboratory liquid nitrogen generator displays “000” upon startup

　　After checking the laboratory liquid nitrogen generator, check if there is gas input at the air inlet 2.

　　7. If the laboratory liquid nitrogen generator displays numbers after 10 minutes of startup but the pressure does not rise, it indicates that there is no gas output.

　　Check if the solenoid valve plug is loose or disconnected. Use a multimeter to measure the two plugs of the solenoid valve. If there is no 220V voltage, replace the power supply. The laboratory liquid nitrogen generator is managed as special equipment. Operators must undergo training before operation. While strictly following the operating procedures, operators should be able to judge and handle common malfunctions of the laboratory liquid nitrogen generator, improve the monitoring ability of the nitrogen generator's operating status, and ensure the sensitivity and reliability of the nitrogen generator's safety devices.

　　The above introducesLaboratory Liquid Nitrogen Generatorcommon troubleshooting methods. For more information, please Contact Us!