Introduction; Product Description - Aqua Lung Calypso User Manual

6 CALYPSO BC USER'S MANUAL

2. INTROdUCTION

The Calypso BC is specifically designed for military use with open circuit
breathing apparatus. The distribution of the buoyancy chamber provides
excellent safety performance, either during buoyant ascent (vertical stabil-
ity) or at the surface (natural support position with head and shoulders out
of the water).

2.1 pROdUCT deSCRIpTION

Powerline Inflator Assembly
• MP ai r is supplied to the inflator assembly by a quick disconnect inflator
hose attached to the first stage regulator. Air can be added to the BC by
pushing the power inflation button or added manually through the oral
inflator. The inflator assembly is connected with a heavy duty cable to
the Rapid Exhaust Valve (REV) at the top of the airway, which allows the
BC to be easily vented for fine buoyancy adjustments by simply pulling
on the inflator. A signal whistle is provided with the oral inflator for diver
safety. The quick disconnect (QD) fitting cover will keep water and debris
out of the inflators key components (See Fig. 1).
ORAL INFLATE POWER INFLATE
Over Pressure Relief Valve (OPRV) and Rapid Exhaust Valve (REV)
• The Over Pressure Relief Valve (OPRV) primary function is to relieve
excess air pressure from inside the BC bladder. The OPRV is a critical
feature that prevents stress or damage to the BC bladder. It can also
be opened manually to facilitate rapid dumping of air through the Rapid
Exhaust Valve (REV).
Outer Bag and Utility pocket
• The outer bag is constructed of a heavy duty, urethane backed 840 de-
nier material that resists cuts, tears, and abrasion. The inner surface of
the collar is plush lined, to prevent chafing against bare skin. Featuring
a pleated utility pocket with "Hook and Loop" closure, the bag is sewn
throughout with high tensile nylon thread. Vented openings at the bottom
allows instant drainage when exiting the water. A clip and alligator "Hook
and Loop" attachment is provided to hold the H.A.B.D or S.E.A system,
an independent backup air source.
QD FITTING
COVeR
MP INFLATOR HOSE
WhISTLe
Figure 1
OVER PRESSURE RELIEF VALVE /
RApId eXhAUST VALVe