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Troubleshooting
Problem Possible reason Possible solution
Mask won’t seal properly or is
uncomfortable
Mouth cushion or pillows may
be dirty.
Clean mask according to
instructions in “Cleaning the
Mask in the Home”.
Mask may have been fitted
incorrectly.
Carefully follow instructions in
“Fitting the mask”.
Mask is incorrectly adjusted. Check headgear is not over-
tightened.
Mouth cushion is wrong size. Talk to your clinician.
Mouth cushion is skewed in
mask frame.
Check insertion of cushion.
Mouth cushion is misaligned or
creased on face.
Ensure cushion is properly
aligned and that there are no
creases in it: undo headgear clip,
check cushion and reposition the
mask on your face.
Mask pillows are the wrong size. Try another size or talk to your
clinician.
Mask pillows are not correctly
seated in your nostrils.
Re-seat pillows into nostrils.
Mask pillows are skewed in
cushion.
Check insertion of pillows.
Mask is assembled incorrectly. Reassemble mask.
Mask is too noisy Vents are blocked or partially
blocked.
Clean vents according to
instructions in “Cleaning the
Mask in the Home”.
Valve is misassembled. Reassemble valve.
Cushion is not properly inserted. Check insertion of cushion.
Mask is assembled incorrectly. Reassemble mask.
Valve is damaged, torn or
distorted.
Replace valve.
Pillows are not inserted correctly
into cushion.
Check insertion of pillows.
Mask is not sealing. Check and adjust mask as
necessary.
61857r3 ROW Eng Ref.fm Page 7 Thursday, April 5, 2007 8:33 AM