Scubapro ProEar 2000 Instrucciones De Uso página 4

2) Mask squeezing: Deeper than 2 m. (6 feet), in free diving, the depth pressure squeezes the mask
against your face: to prevent that, just exhale through the nose.
3) Eardrum squeezing: To prevent that dangerous action, pinch the nose with the fingers and blow
through it, to send air pressure inside the eardrum.(See also "Beginning your dive")
4) To not lose the mask before diving / - snorkeling, wear it loosely around your neck. Be careful not to
get caught anywhere to avoid strangulation and injury. Therefore, put the mask on just before diving
/ snorkeling.
5) When removing the mask, make sure that the hair is not tangled in the buckles. This can lead to
painful problems like pulling hair out.
Wearing the mask – When you put on the mask it is preferable to hold the ear cups in the palm of each
hand and pull slightly apart as you slip the mask over your head. Make sure that as little as possible of hair
gets into the ear cup. Make sure that the ear cup covers the entire ear and that the ear is in the middle
of the ear cup and that the silicone seals are not folded or bent. It would be helpful if your buddy could
check the seals and positioning of the mask.
Checking the seal – It is possible to check the seal of the mask when it is positioned with the ear cups
in place. At this stage you should inhale through your nose and the mask should pull in toward your face
as a vacuum is formed. If there is any leakage of air, then do not enter the water but check all seals (mask
and ear cups), check for hair in the mask or excessive hair in the ear cups and perhaps tighten the mask
down slightly either with the back strap or the top strap. It is also possible to check the seal by placing
the mask on your face without the strap on (as you do with a normal mask).
Adjusting the straps – Make sure the mask is snug but not too tight, make sure the straps are sitting
well on the back of the head and if you are using the optional top strap, adjust it only after positioning the
mask and adjusting the back strap. Do not tighten down the top strap too hard. The main strap carries
the ear cups (which can be adjusted). You will note that the strap sits a little lower than normal since it
supports the ear cup. This slightly lower positioning takes a little getting used to but should not affect the
sealing of your mask. In any respect, if this happens then it is recommended to use the optional top strap.
Beginning your dive – When you begin your dive, descend slowly while very gently blowing air through
your nose. The air will go through the tubes and the one-way valve (which prevents a back flow of water
in case of flooding). This valve may "whistle" slightly if you blow too hard into the ear cups, the whistling
sound will go away in time. Exhaling through your nose helps equalize the pressure in your mask and ear
cups and creates a "closed circuit" system of ambient air pressure. Do not blow too hard. You may also
need to pinch your nose shut (as normal) occasionally to help with the equalization.
Mask leakage – If you get water into the ear cups (through leakage or taking off your mask), it is possible
to drain out the water while diving. With your head facing forward press the top of the ear cups against
the head and blow air through the nose. The increased air volume should push the water out (through the
drainage cuts at the bottom of the ear cup). Due to the slight resistance caused by the one-way valves
located in the air tubes it may be necessary to push the mask against the face as well. This can easily be
done using both hands. It is important to note that while sudden flooding may involve the discomfort of
cold water entering your external ear canal it will not involve any increase of pressure as the entire system
is under the same ambient pressure all the time. If possible, practice this exercise in the pool several
times prior to doing it in the open water. If water persists to stay in the cups, then try clearing one ear
cup at a time by pinching shut the tube on the opposite side and then blowing air through your nose. It
is also recommended to wash the ProEar 2000 mask thoroughly with fresh water and dry properly after
every dive.
Diving with a Hood – It is possible to dive while using the ProEar 2000 mask with a hood.
Put the hood on and then peel it back off the head, place the ProEar 2000 mask on your face and over
your ears and then carefully place the hood back on the top of your head over the ear cups and mask
straps. When using the ProEar 2000 mask it is impossible to put the mask on over the top of the hood
unless you make a hole in the hood at the exact place where the ear cups are placed. The hole should be
roughly the exact same size as the plastic covers of the silicone ear cups. That is slightly smaller than the
actual silicone seals to allow for the stretch factor of the hood. The size and position of the holes should
be made while wearing the hood over the mask and ear cups to make sure the position and actual size
are correct. In this case, you should put the hood on then place the mask over the top and once the ear
cups are in position pull the hood out slightly and place the silicone cups in position will make sure that the
seals are sitting correctly against the head. Once the cups are properly positioned then return the hood
to its normal position and you are ready to dive.
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