G1 Facepiece
14
Use
GB
3.2
Leak Check
In order to check the mask-to-face tightness a leak test must be performed before each use.
(3)
Pull the head straps over your head.
a) Ensure that the harness is sitting correctly and is not
twisted.
(4)
Adjust mask and tighten the straps firmly and evenly.
a) Tighten the lower straps first by pulling them straight
back, not out.
b) Tighten the temple straps in the same manner.
c) If present, tighten the top strap for best visibility and fit.
(1)
Seal the inlet (component housing) with the palm of your
hand or by attaching the non-pressurized regulator.
(2)
Check tightness.
(3)
Inhale and hold breath for a few seconds.
The mask must stay collapsed on face.
(4)
Exhale.
The exhalation valve should open and release the
pressure inside the mask.
(5)
If necessary retighten the straps.
a) If the leak check fails, re-don the mask.
If the leak check still fails, the mask must not be used.
