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CHECK THAT THE MASK SEAL DOES NOT CROSS YOUR HAIRLINE
Check all the way around the mask seal, paying particular attention to your forehead and temples.
The mask seal
must not cross your hairline
.
WARNING
If you cannot adjust the mask to avoid your hairline, the mask is not suitable for you and
should not be worn.
STEP 5 – MASK SEAL CHECK
It is recommended to do a negative pressure seal check on the mask.
Using your thumbs, block the AirClip air inlets on both
sides of the mask. Breathe in sharply. If there is a good
mask seal, you should have difficulty drawing air as you
inhale. Listen for squeaking or whistling noises which
indicate air is leaking past the seal. Hold your breath for
10 seconds. If the mask seal slowly recovers (mask
moves away from your face) there is a leak. Readjust the
mask fit and repeat the negative pressure seal check.
Unblock the AirClip air inlets and resume normal
breathing.
Step 2:
Place your chin in the cup of the mask
face seal. Then, pull the harness over your head.
Step 3:
Adjust the top strap so that the hanger
for the rear strap sits an inch above the ears.
Step 4:
Settle your face into the mask face seal.
Gently tighten each harness strap in turn,
starting with the bottom straps. As you pull each
strap, use your other hand to steady the mask
on your face. Do not overtighten.
Continue to adjust the straps until the mask face
seal presses evenly on the face.
Check that the
mask seal does not cross the hairline
.
Ensure the mask is adjusted so the orinasal
piece sits comfortably around your nose and
mouth.
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