Astral and Stellar  To add supplemental oxygen, please follow the instructions below: Unlock the low flow oxygen inlet at the rear of the device by pushing up on the locking clip. Insert one end of the oxygen supply tubing into the oxygen port connector. The tubing will automatically lock into place. Attach the other end of the oxygen supply tubing to the oxygen supply. Start ventilation. Turn on oxygen and adjust (at the oxygen supply) to the prescribed flow rate or FiO2 level. For Astral devices: For Stellar devices: To remove supplemental oxygen:  Before you remove supplemental oxygen from the device, ensure the oxygen supply has been turned off. Unlock the low flow oxygen inlet at the rear of the device by pushing up on the locking clip. Remove the oxygen port connector from the low flow oxygen inlet. A low pressure oxygen connector (product code: 24971) is needed to connect the low flow oxygen inlet to the oxygen supply tubing. Please see below. Lumis To connect supplemental oxygen to Lumis devices, you can either use a ClimateLineAir Oxy tube or an oxygen connector port. For more information on how to set up the device with supplemental oxygen, refer to the user guide supplied with the accessory you choose to use. Please note: Adding oxygen may affect the delivered pressure and accuracy of the displayed and reported values (e.g. leak, minute ventilation and AHI). Always make sure that the device is on, and airflow generated, before the oxygen supply is turned on. Always switch off the oxygen supply before turning off the device. Unused oxygen can accumulate within the device enclosure and presents a fire hazard.