6. Adjust the flow to the prescribed setting by turning the
knob on the top of the flow meter until the ball is centered
on the line marking the specific flow rate.
7. Be sure oxygen is flowing through the cannula. One way to
check is to put the nose piece in a cup of clean water and
see bubbles. If it is not, refer to troubleshooting section.
8. Put the cannula on as directed by your home care provider.
9. When not using the device, press the power switch to the
Off ( O ) position.