11
WET BREATHING
The Envoy second stage is much “drier” than many other second
stage designs during use. However, it must be remembered that
water (including the diver’s own saliva) will always settle to the bottom
of the case. If the diver is in an unusual position (i.e. head down or
upside down looking upwards) the exhaust valve is no longer at the
bottom of the case and the mouth tube is at the bottom. This means
that water will settle in the mouth tube area and sometimes is ingested
by the diver. A tendency to wetness is aggravated by slow exhalations
while inverted. This is because the exhaust valve is flapping open
with little air velocity, thus letting water in. Of course a regulator that
begins breathing wetter than it has before, should be checked out by
a technician, but avoiding long periods of inversion, and using shorter
stronger exhalations if inverted, will keep the interior of the regulator
drier.
PRE-DIVE CHECK
1. Before mounting any regulator onto a tank valve, you must first
open the valve briefly to blow out any water trapped in the
outlet area
of the valve. Failure to perform this simple step will often result in water
and other contaminants being blown into the interior of the regulator,
which in turn will cause future mechanical problems in the regulator.
2. Prior to each dive always check to make certain your regulator has
no potential water leaks by inhaling on the regulator with the dust cap
in place or with the regulator mounted on a valve with the air turned off.
You should be able to draw in very little if any air. If you can draw in any
quantity of air, either the exhaust valve is failing to seal properly, or there
may be a pinhole leak in the mouthpiece or second stage diaphragm.
Note, with the dust cap OFF, it is normal to be able to inhale air through
any scuba regulator.
Содержание ReZort 310-5210
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