
5. Push the manual control lever to the exhalation phase (to the left). Observe the pressure gauge on the device and adjust the maximum pressure (negative) using the pressure knob to achieve the correct reading on the gauge. 6. Shift the manual control lever to the inhalation phase (push to the right). Adjust the pressure reading by turning the inhale pressure knob to achieve the correct reading on the pressure gauge (clockwise to increase pressure and counterclockwise to decrease pressure). 7.