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Flexible PVC Tubing
Flexible PVC contains elements that can be detrimental to the materials of the
mask. If flexible PVC tubing is used continuously, the attachment port should
be inspected for cracking. Replace any parts that are damaged.
Troubleshooting
Problem Possible reason Possible solution
Mask won’t seal
properly
or is uncomfortable
Mask may have been
fitted incorrectly or is
incorrectly adjusted.
Carefully follow instructions
in “Fitting the Mask”. Check
headgear and dial are not over-
tightened. Extend dial to apply
more force to upper lip. Shorten
dial to increase force at nose
bridge.
Mask is wrong size. Talk to your clinician.
Mask cushion is
skewed in mask
frame.
Check insertion of cushion
and reinsert correctly
according to the instructions in
“Reassembling the Mask”.
Mask cushion is
misaligned or creased
on face.
Ensure cushion is properly
aligned according to the
instructions in “Reassembling
the Mask”. Make sure the
cushion has no creases in it:
undo headgear clip, check
cushion and reposition the
mask over your nose.
Mask cushion may be
dirty.
Clean cushion according to
instructions in “Cleaning the
Mask in the Home”.
Mask is too noisy Mask is assembled
incorrectly.
Reassemble mask.
Vents are blocked or
partially blocked.
Clean vents according to
instructions in “Cleaning the
Mask in the Home”.
Dial inserted into mask
frame before forehead
support
Misassembly. Push dial base onto a hard
surface until the dial comes out
of the frame.