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 at 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 at 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.
Symbols
Caution, consult accompanying documents;
Lot number;
Part
number; Temperature limitation; Humidity limitation; Does not
contain latex; Indicates a Warning or Caution and alerts you to a possible
injury or explains special measures for the safe and effective use of the device.
