•	Open the main valve of the cylinder.
•	Rotate the airway pressure selector to 20 cmH2O.

•	Press the O2 button and turn it clockwise.
•	Now the Oxylator® EMX is in automatic mode.

•	Place the mask on the patient's face.
•	Assure that there is a proper mask seal.
•	Hold the mask with both hands and tilt the head.

•	For manual mask ventilation, press the O2 button for inspiratory flow, release it for passive exhalation.
•	Every second of inspiratory time delivers 500 ml of volume of oxygen towards the patient's airway.
•	Try to achieve an inspiratory time of 1.5 to 2 seconds without exceeding the pressure setting of 20 cmH2O.

•	If the patient is intubated, adjust the pressure setting between 20 and 45 cmH2O to achieve 1.5 to 2 seconds of inspiratory time.

•	For manual ventilation with an intubated patient, press the O2 button for inspiratory flow, release it for passive exhalation.
•	Every second of inspiratory time delivers 500 ml of volume of oxygen towards the patient's airway.