The oxygen generator can be maintained and maintained according to the following cycles every day 1. Regularly check the precision filter of the nitrogen generator every day. (1) Whether the automatic drain valve is normally discharged, if any abnormality is found, please manually drain and maintain or replace the automatic drain valve immediately. (2) Whether the pointer of the differential pressure gauge is in the green area, if it is in the red area, the filter element of the air filter should be replaced. 2. Clean the dust on the surface of the nitrogen generator equipment. 3. Regularly check whether the inlet pressure, temperature, flow and oil content of compressed air are normal. 4. Regularly check the readings of each instrument, and analyze and deal with any abnormality. 5. Check whether the pressure drop of the three connections that control the air source of the air circuit is normal. every 3 months Check the sealing performance of the nitrogen generator with soapy water. every 6 months Check whether the pneumatic valve of the nitrogen generator is working properly. every 12 months 1. Replace the oxygen electrode of the nitrogen analyzer on the nitrogen generator. 2. Replace the inner filter element of the air precision filter. 3. Calibrate the flowmeter. 4. Calibrate the oxygen analyzer. 5. Check the safety valve and pressure gauge according to national regulations. 6. Replace the activated carbon in the degreaser.