ResMed AirFit F20 NV User Manual page 12

5. Undo the fastening tabs on the lower headgear straps. Pull the straps
evenly until the mask is stable and sits comfortably on the chin.
Reattach the fastening tabs.
6. Connect the device air tubing to the elbow. Attach the elbow to the
mask by pushing the elbow into the frame, ensuring it clicks in and is
firmly secured.
7. The mask and headgear should be positioned as shown in the
illustration.
Adjustment
If necessary, slightly adjust the position of the mask for the most
comfortable fit. Ensure that the cushion is not creased and the headgear
is not twisted.
1. Turn on the patient's device so that it is blowing air.
Adjustment tips:

With air pressure applied, pull the mask away from the patient's
face to allow the cushion to inflate and reposition onto their face.

To resolve any leaks at the upper part of the mask, adjust the
upper headgear straps. For the lower part, adjust the lower
headgear straps.

Adjust only enough for a comfortable seal. Do not overtighten as
this may cause discomfort.
Removal
1. Twist and pull both magnetic clips away from the frame for quick
release.
2. Pull the mask away from the patient's face and back over their head.
Disassembly
If the mask is connected to the device, disconnect the device air tubing
from the elbow.
1. Undo the fastening tabs on the upper headgear straps. Pull the straps
out of the frame.
Tip: Keep the magnetic clips attached to the lower headgear straps to
easily distinguish the upper and lower straps when reassembling.
2. Remove the elbow from the mask by squeezing the top and bottom
side buttons and pulling away from the frame.
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