1. The power indicator light is on, and the left suction, pressure equalizing and right suction indicator lights are on circularly to indicate the oxygen production process.

2. When the left adsorption indicator light is on, the pressure of the left adsorption tower gradually rises to the maximum from the equilibrium pressure during pressure equalization, and the pressure of the right adsorption tower gradually drops to zero from the equilibrium pressure during pressure equalization. When the pressure equalizing indicator light is on, the pressure of the left and right adsorption towers will rise and fall gradually to balance the two.

3. When the right adsorption indicator light is on, the pressure of the right adsorption tower gradually rises to the maximum from the equilibrium pressure during pressure equalization, and the pressure of the left adsorption tower gradually drops to zero from the equilibrium pressure during pressure equalization.

4. The oxygen outlet pressure indicates the normal gas pressure. The pressure will fluctuate slightly during use, but the change should not be too large.

5. The flow indication of the flowmeter should be basically stable, and the fluctuation should not be too large. The indication value of the flowmeter should not be greater than the rated gas production of the oxygen production equipment.

6. The indication value of the oxygen meter should not be less than the rated purity of the oxygen production equipment. There may be a little fluctuation, but it should not fluctuate too much.