Put the switch “I” and turn on the switch when the label is bright on the screen, and the machine are working.After 7 seconds, the machine has the voice of gas. (it can be at good working condition 30 mints after turn on) According to the flow buttons on the screen. You can adjuct the required flow rate . Adjust the flow control knob to rotate counterclockwise toincrease the flow, and clockwise to decrease the flow. * Connect one end of the oxygen suction tube to the oxygen outlet, and the other end is worn well with oxygen absorber and u can begin to absorb oxygen. *Adjusted the time and flow by demand. *Close the oxygen machine when it is over, and remove oxygen terminal. If the humidifying bottle emits a continuous exhaust sound, it is the sound of the safety valve opening in the humidifying bottle,and the surface oxygen suction pipe is blocked, please dredge the pipeline. Warning: If the flow range on the flowmeter is less than 0.5L/min,Please check whether the pipeline or accessories are blocked, kinked or the wetting bottle is defective.

Product name	Oxygen Concentrator
Application	Medical grade
Color	Black and white
Weight	32kg
Size	43.8*41.4*84CM
Material	ABS
Shape	Cuboid
Other	1-10l flow can be adjusted