Respironics DreamStation Service & Technical Reference Manual page 32

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Check Mask Fit
The optional check mask fit feature can be enabled or disabled by the home care provider. This feature allows
you to check the fit of your mask prior to starting therapy. This is done by measuring the amount of leak. Put on
your mask assembly. Refer to your mask instructions if needed. Navigate to the Check Mask Fit screen under
"My Setup" and press the control dial to initiate the check.
The device will deliver a test pressure while the screen counts down 40 seconds. A green bar indicates good
fit, while a red bar indicates improvement is needed. After the test, normal therapy will start and the screen will
either display a green checkmark or a red "X". The green checkmark indicates that the leak found allows for
optimal performance of the device. The red "X" indicates that the leak may affect device performance,
however, the device will remain functional and deliver therapy.
F 4-20: C M F S
IGURE HECK ASK IT CREEN
Sleep Progress
The device provides summary information about therapy use each time the therapy is turned off. The first
screen displays "Three Night Summary." It shows nightly usage for the last 3 sleep sessions (measured in 24
hour periods, ending at noon each day). The most recent session is displayed in the right hand bar, labeled
with the number of hours slept. A green bar indicates that the person slept more than 4 hours, and a yellow bar
indicates less than 4 hours of use.
The second screen shows the total number of 4+ hour nights that the person had slept in the last 30 days. It
provides a goal of sleeping at least 4 hours per night for 70% of the last 30 nights. Therefore the goal is 21
"good nights" of use. This screen provides a simple way to track progress. The screen will stop displaying
when the goal is reached, or after the first 90 days of use has passed, whichever comes first.
Altitude Compensation
This device automatically compensates for altitude up to 7,500 feet. No manual adjustment is necessary.