A：It is recommended to consult a doctor to determine the oxygen concentration, flow rate and use time required by the user. The AERTI oxygen generator is within the specified flow range, and the concentration of the new machine is 93%.

A：Because the molecular screening machine uses air compressors, there must be noise, and it mainly judges whether there is abnormal sound. The periodic popping sound in the oxygen concentrator is the sound of molecular sieve discharging nitrogen is a normal phenomenon.

A：According to clinical studies, the direct oxygen supply of the molecular sieve oxygen generator is equivalent to other oxygen supply methods. The medical profession believes that a concentration of 90% oxygen meets the medical oxygen standard. The Chinese Pharmacopoeia stipulates that medical oxygen is 99.9%, which means that the cryogenic method is used to produce oxygen (the cryogenic method only removes the oxygen concentration above 99% from other journals). Moreover, many large hospitals now use large molecular sieve oxygen production for centralized oxygen supply through pipelines.

A：Reasons: 1. Long oxygen inhalation time; 2. Too much water added in the humidification bottle; 3. The temperature of the water added in the humidification bottle is too high; 4. There is no ventilation around the machine and the temperature is high; 5. The room temperature is relatively high in autumn and winter. Low, the pipe wall produces condensed water drainage method: After starting up, connect the oxygen suction pipe to the oxygen outlet, and use your fingers to repeatedly open and close the pipe port to drain the water droplets in the pipe.

A：Under normal pressure, ensure the use time according to the doctor's advice, and there will be no oxygen poisoning. There are two reasons for oxygen poisoning. One reason is that the oxygen pressure is too high and the carbon dioxide cannot be discharged in time, resulting in the accumulation of carbon dioxide in the body and poisoning. The other is due to the high concentration of inhaled oxygen, the hemoglobin in the blood is oxidized into hyperoxic hemoglobin, and the tissue is hypoxia due to the loss of the ability to carry oxygen.

A：1. Check whether the power plug is plugged in; 2. Check whether the indoor power supply is supplied; 3. Check whether the fuse is damaged and replace it in time; 4. If the oxygen generator circuit board is damaged, please contact after-sales maintenance personnel as soon as possible.

A：Add pure water, distilled water or cool boiled water to the humidifying bottle, not suitable for heating water. There are marks of the highest water level and the lowest water level on the cup, and the water volume should be within the specified range. The water in the humidification bottle is changed once a day.

A：The cost performance of a household oxygen concentrator is much higher than that of an oxygen cylinder. The oxygen concentrator has almost no other expenses except electricity consumption. It consumes 1 kilowatt-hour of electricity every 4 to 6 hours of work, which is 0.4 yuan. A 10L oxygen cylinder can be used continuously for about 6 hours at a flow rate of 3L/min when fully inflated, and the cost of each inflation is 50 yuan. Secondly, the oxygen generator can work continuously, and the oxygen cylinder needs to be filled with oxygen. Thirdly, the oxygen cylinder is a high-pressure container, which may explode in the case of high temperature or violent collision, and there is no high-pressure equipment in the oxygen generator, so it is safe to operate.

A：1. Check whether the flow adjustment is at a non-zero position in the power-on state; 2. Check whether the oxygen inhalation tube is kinked or damaged, straighten out the oxygen inhalation tube or replace the oxygen inhalation tube; 3. Leakage at the interface between the humidification bottle and the machine, please reconnect ; 4. Check the air intake filter is blocked, check and clean the air intake filter or replace with a new high-efficiency filter; 5. If the internal failure of the machine, please contact the after-sales maintenance personnel as soon as possible.

A：1. Check whether the bottom exhaust port is unblocked; 2. The axial flow fan does not work, please contact after-sales maintenance personnel as soon as possible.

A：Remove the humidification bottle from the machine, clean it with a neutral detergent and rinse it with water; mix white vinegar with hot water in a ratio of 1:3, put the humidification bottle in the mixture and soak for 30 minutes for disinfection ; Thoroughly rinse the humidification bottle with warm water and dry it for later use.