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Troubleshooting
Problem/possible cause
Mask is uncomfortable.
Headgear straps are too tight.
Mask could be the wrong size.
Mask is too noisy.
Elbow incorrectly installed.
Mask leaks around the face.
Cushion membrane is creased or folded.
Mask could be the wrong size.
Frame incorrectly fitted.
Technical specifications
Compatible
devices
Dead space
information
6
For a full list of compatible devices for this mask, see the Non-Vented
Mask/Device compatibility list at ResMed.com/downloads/masks.
Physical dead space is the empty volume of the mask to the end of
the swivel. Using the large cushions it is 214 mL.
Solution
The cushion membrane is designed to inflate
against your face to provide a comfortable
seal with low headgear tension. Adjust straps
evenly. Ensure that the headgear straps are
not too tight and that the cushion is not
crushed or creased.
Talk to your clinician to have your face size
checked against fitting template. Note that
sizing across different masks is not always the
same.
Remove the elbow from your mask, then
reassemble according to the instructions.
Refit your mask according to the instructions.
Ensure that you position the cushion correctly
on your face before pulling headgear over your
head. Do not slide the mask down your face
during fitting as this may lead to folding or
curling of the cushion.
Talk to your clinician to have your face size
checked against fitting template. Note that
sizing across different masks is not always the
same.
Remove the rest of the mask from the frame,
then reassemble according to the instructions.
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