1. Patients who buy oxygen machines should read the instructions carefully before using them.
2. When using oxygen generator, avoid open fire and avoid fire.
3. The oxygen generator should be placed smoothly, otherwise it will increase the noise of oxygen generator operation.
4. The water level in the wet bottle should not be too high (the water level should be half of the bottle body), otherwise the water in the bottle can easily escape out or enter the oxygen suction pipe.
5. When the oxygen generator is not in use for a long time, please cut off the power, remove the water from the humidifying bottle, wipe the surface of the oxygen generator clean, cover it with a plastic cover, and store it in a dry place without sunlight.
6. When the oxygen generator is operating, do not put the float ball of the flow meter on the zero position.
7, be especially careful when use oxygen generator filling oxygen bag, oxygen bag must pluck after filling oxygen bag after intubation, then switch off oxygen generator, otherwise easy to cause wet bottle of liquid as negative pressure suction into the oxygen generator, oxygen generator fault.
8. During transportation and storage, it is strictly prohibited to place, invert, wet or direct sunlight.
With the introduction of portable oxygen devices and the development of domestic oxygen sources, some patients with chronic respiratory diseases and

persistent hypoxemia can have oxygen therapy at home. Oxygen bottles and oxygen machines are commonly used in domestic oxygen therapy to improve

patients' health, improve their quality of life and exercise endurance.