Don't panic when the liquid nitrogen generator encounters the following problems during operation!

　　Nitrogen is a commonly used inert gas, low in price, easy to produce and non-toxic. It is commonly used as chromatographic carrier gas, purging, protection, etc. in the laboratory.Liquid nitrogen generators are used for on-site nitrogen production, mostly small gas stations or laboratory instruments or small production lines, which are individually matched one-to-one. The use is flexible and the cost is controllable. There are no special requirements for transportation and storage, and it is used by more and more laboratory users. select.

　　Troubleshooting methods that may occur during the operation of the liquid nitrogen generator:
　　1. There is a noise during operation
　　Solution: Use a wrench to adjust the tightness of the nut on the instrument properly, not too tight; if not, you need to disassemble the shell of the instrument and clean the interior (the sound is mainly due to impurities inside). If it is still not clean, replace it with a new one. of.
　　2. When the nitrogen pressure does not reach the set value, you should first observe the flow meter. If the flow display is larger than usual, it can basically be concluded that the entire system is leaking.
　　Solution: Turn off the power first, remove the gas path, and seal the nitrogen outlet with a sealing nut, then turn on the power to see if the pressure can reach the set value, and see if the flow display can reach "000", if the flow display can Return to zero, indicating that there is no gas leakage in the instrument itself. After that, please check the pipeline after the gas outlet and whether the gas equipment is leaking. If the flow display cannot return to zero, there is a leak. Please use soap to check if there is any leak in the drying tube.
　　3. During operation, the meter head shows that the large pressure cannot reach the set value
　　Solution: This is caused by air leakage, and it is necessary to conduct a comprehensive leak detection of the air circuit, especially the drying room and the battery.
　　4. The device does not work when booting, and the display board has no display
　　Solution: first check whether the power supply is a little bit, whether the plug is plugged in, then check whether the insurance is intact, and whether the instrument display board cable plug-in is plugged in. The fuse is located in the wire socket at the back of the instrument. Use a small "one" screwdriver or a sharp metal tool to pry it out to see if the indicator on the circuit board in the instrument is on. If it does not, check whether the fuse on the circuit board is burned out. If it is burned, the insurance 3A must be replaced. If it is still not displayed after the replacement, the power supply must be replaced.