When adding liquid nitrogen to a liquid nitrogen container for the first time, pay attention to the following points:
1.The inside of the liquid nitrogen tank should be kept dry;
2.Check the liquid nitrogen tank to see if the outside of the tank is uneven or not, or other special circumstances;
3.There are no other items in the liquid nitrogen tank, and the liquid nitrogen tank base is firmly fixed.
When these conditions are no problem, you can start adding liquid nitrogen. It is recommended to add liquid nitrogen in a well ventilated area. It is generally operated outdoors.
Note: When filling with liquid nitrogen, the speed should be slow. It should be injected with a small amount of liquid nitrogen, and then stop for a few minutes so that the cooling can be gradually filled to the required and specified capacity.