1. Hang the facemask from the
neckstrap.
2. Position the facemask so that the
chin fits into the chin-cup.
3. Pull the head harness over the
back of the head, ensuring that no hair is
trapped under the face seal.
4. Tighten the head harness straps in
sequence: bottom, middle, top. DO NOT
OVER-TIGHTEN.
5. Take a sharp breath to actuate the
first breath mechanism.
4.3 POSITIVE PRESSURE
TEST
1. Gently insert fingers into the mask
seal and check that there is a good flow
of air from the facemask.
2. Remove the fingers from the seal
and allow the mask to re-seal to the face.
4.4 FACE SEAL TEST
1. Hold your breath and listen
carefully for leaks.
2. If a leak is detected adjust the
facemask and head harness. Repeat the
test. If the leak is still present the
apparatus must be returned for repair.
WARNING:
DO NOT use the apparatus if there is a
leak.
3. If there are no leaks, the apparatus
is ready for use.