Sabre Vision 3 User Instructions - Vision 3
VISION 3
5
3.2.2
Facemasks with a Net
Harness
1.
Hold the mask by the side of the
net harness, place the chin into the chin-
cup and pull the mask onto the face.
Grasp the pull-strap at the rear of the net
harness and pull the net over the head.
2.
Tighten harness side straps. DO
NOT over-tighten.
3.2.3
All Facemasks
Inhale deeply and check that the DV first
breath mechanism operates.
3.3 POSITIVE PRESSURE
TEST
1.
With the cylinder valve open, insert
a finger under faceseal and check for a
steady outward flow of air. Remove finger
and allow mask to re-seal.
2.
Hold breath for ten seconds and
listen for leaks. If there are leaks, loosen
the head-harness and adjust the mask for
a comfortable leak-tight fit and repeat
test. DO NOT over-tighten the head-
harness.
3.
DO NOT USE apparatus that leaks.
Attach an explanatory note and return for
servicing.
3.4 BREATHING
APPARATUS TESTS
Perform any tests detailed in the
appropriate breathing apparatus user
instructions.