The device is shipped from the factory with a preset O2 flow rate of 8 ml/hr. To change the flow rate:
1. Press and hold both the Set and the Mute buttons for 5 seconds,
2. Once the O2 flow rate begins flashing,
a. to increase flow, press the Up button
b. to decrease flow, press the Down button
3. Once the desired O2 flow rate is displayed, press the SET button
The device is now producing oxygen at the new set flow rate.
NOTE: If the SET button is not pressed within 60 seconds, the flow rate display will stop flashing and the oxygen flow rate will revert back to the previous setting.