Aqua Lung Calypso Manuel de l'utilisateur - Page 10
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CALYPSO BC USER'S MANUAL
5.2 Deflation Via the Rapid Exhaust Valve (REV)
Inside the oral inflator's corrugated hose is a cable that attaches the oral inflator
to the rapid exhaust valve (REV) at the top of the airway assembly. You can
vent air from the BC by gently tugging straight down on the oral inflator.
The rapid exhaust valve (REV) provides an effective and convenient way to vent
air from the BC while in either an upright or facedown swimming position.
5.3 Deflation Via the Over Pressure Relief Valve (OPRV)
The over pressure relief valve (OPRV)
is located near the bottom right side
of the bladder. This valve relieves
air when the internal pressure of the
bladder is too great, to prevent over
pressurization.
The OPRV can also act as a manual
dump valve. It can be activated by pull-
ing on the ball and cord assembly to
release air from the BC (See Fig. 3).
CAUTION: The proper function of the over pressure relief valve
(OPRV) is vital to prevent damage to the BC bladder. Unauthor-
ized service or tampering may render this valve inoperable, and
could cause the bladder to leak or rupture. This type of damage
is not repairable, and is not covered under the terms and condi-
tions of the Aqua Lung Two year Limited Warranty™.
NOTE: Most training agencies recommend that you descend in an up-
right, feet first position, in order to maintain a slower and more controlled
descent. This is especially true if you experience difficulty equalizing your
ears, or if you are descending in low visibility conditions.
Figure 3