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Designed for liquid and gas phase storage
When the liquid nitrogen tank is filled with liquid nitrogen for the first time, or when it is refilled with liquid nitrogen after long-term use, it must be pre-cooled first.
Check whether the power in control panel is off or temperature setting is wrong.
Check whether the power line is well connected to power source.
Check if there is thick frost in cabinet,Check the door is closed tightly and do not open the door very often.