ResMed ELITE S8 User Manual page 21

A caution explains special measures for the safe and effective use of the device.
•
At low pressures, the flow through the exhalation ports of your mask may not clear
all exhaled gas from the tubing. Some rebreathing may occur.
•
The airflow for breathing produced by this device can be as much as 11ºF (6ºC)
higher than the temperature of the room. Caution should be exercised if the room
temperature is warmer than 90ºF (32ºC).
•
When using DC power, always use a ResMed DC-12 converter. (The DC-12
converter is available as an optional accessory. It is not supplied with all models.)
The device should not be connected to both AC and DC power sources
simultaneously.
Note: The above are general warnings and cautions. Specific warnings, cautions, and notes
appear with the relevant instructions in this User Guide.
Troubleshooting 17