Donning - INTERSPIRO 95283E91 Manuel Utilisateur

1.3 DONNING

1. Extend the head harness straps on the face mask as far as possible.
2. Adjust the pressure equalizing pad to a position that permits both an easy
equalizing (clearing of ears) and unrestricted breathing through the nose.
Check: that it is properly secured. [Fig 7]
Note:
To make the pressure equalizing pad reach closer to the nose, the knob on the
cover plate can be removed. [Fig 8] Grind off the knob and make sure that there
are no sharp edges or rough surfaces than can damage the rubber on the face
mask.
3. Don the full face mask by grasping the lower two head harness straps and pull
the head harness over your head. [Fig. 9]
4. Push the chin well into the chin cup of the mask. Pull down the back of the head
harness as far as possible.
Check: that the straps are not twisted.
5. Moderately tighten the head harness straps by pulling straight back, not outwards,
beginning with the lower two straps first [Fig. 10], the upper two straps next, and
then the top center strap. Re-adjust if necessary.
WARNING! SOME NEOPRENE HOODS COMPRESS WITH INCREASED DIVING DEPTH. IN THESE CASES,
READJUSTING THE HEAD HARNESS STRAPS WILL BE NECESSARY. FAILURE TO DO SO MAY RESULT IN HIGH CO2
LEVELS WHICH WILL INCREASE THE BREATHING RATE, CAUSE PANIC, AND COULD LEAD TO A FATAL ACCIDENT.
CAUTION! THE STRAPS ONLY NEED TO "HOLD" THE MASK IN POSITION, THEY DO NOT NEED TO PULL HARD
ON THE MASK. PULLING TOO HARD MAY INSTEAD CREATE A LEAKAGE. ONLY TIGHTEN THE FOREHEAD STRAP
ENOUGH TO ELIMINATE SLACK. IF THE FOREHEAD STRAP IS OVER-TIGHTENED, THE MASK WILL PRESS AGAINST
THE DIVER'S CHIN AND THE DIVER MAY GET JAW FATIGUE AND A HEADACHE. IF THERE IS ANY LEAKAGE
BETWEEN THE FULL FACE MASK AND THE HOOD, MAKE SURE THAT THE SUIT HOOD FACE SEAL HAS AN
APPROPRIATE SMOOTH SURFACE DESIGN TO FIT A FULL FACE MASK.
6. Check: that you can equalize (clear your ears) by pushing the breathing valve
upwards so your nose reaches the equalizer pad. [Fig. 11]
7. For safety pressure versions:
Inhale deeply or press lightly on the purge button to turn on the safety pressure.
Check: that no leakge can be heard when holding your breath.
Check: that a strong air flow is heard when inserting two fingers between the
sealing edge and the face. [Fig. 12]
8. Check: the pressure gauge to ensure that there is adequate cylinder pressure for
the dive.
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