A portable oxygen concentrator is a long‑term health investment. Proper daily maintenance can not only ensure stable oxygen output effect but also greatly extend the service life of the machine, reduce failure rates, and avoid frequent replacement costs.

1. Regularly clean the filter cottonThe filter cotton is responsible for filtering dust and impurities in the air. Long‑term non‑cleaning will cause air intake blockage, reduced oxygen concentration, and increased machine load. It is recommended to clean or replace the filter cotton every 7–15 days according to the usage frequency.

2. Avoid long‑term high‑load operationAlthough Charmingkey oxygen concentrators support stable continuous operation, long‑term maximum gear operation will accelerate battery and compressor loss. For daily maintenance, medium and low gears are sufficient to meet regular oxygen inhalation needs.

3. Standard battery use and storageDo not use the machine while overcharging for a long time. If it is not used for a long time, store it with 50%–70% power to protect lithium battery activity and avoid battery aging and bulging.

4. Keep the machine ventilated and dryAvoid humid, dusty, and high‑temperature environments. Good ventilation ensures stable heat dissipation of the compressor and avoids machine failure caused by overheating.

5. Regularly check the nasal oxygen tubeThe oxygen tube is a consumable. Long‑term use will cause aging, blockage, and bacterial growth. It is recommended to replace the nasal tube every 1–2 months to ensure hygienic and smooth oxygen delivery.

6. Avoid violent vibration and fallThe internal precision compressor and molecular sieve are sensitive to vibration. Avoid dropping or strong impact during carrying and use to ensure stable oxygen production accuracy.With correct usage and maintenance, a high‑quality portable oxygen concentrator can maintain stable performance for many years, bringing long‑term safe oxygen protection for your family.