Cressi Aquawing Series B.C.D. User Manual

Introduction

Congratulations on choosing a Cressi B.C.D., a product of continuous research and development, built to the high Cressi quality standard for pleasant and safe dives. B.C.D.s are fundamental for scuba diving, making dives more comfortable, practical, and safe by allowing divers to carry cylinders and control buoyancy through air inflation/deflation of the bladder. This system adjusts the diver's specific weight, making them lighter and more dynamic. The term 'GAV' (Giubbetto ad Assetto Variabile) is often used, meaning Variable Buoyancy Jacket.

General Warnings

ATTENTION! Failure to follow the precautions listed below could cause serious or fatal injury.

To correctly use the scuba equipment described in this manual, you must have adequate theoretical and practical preparation obtained through a diving certification from a recognized agency. Use by uncertified individuals is extremely dangerous and can lead to serious accidents. It is also essential to have read and fully understood this manual.

ATTENTION! This manual does not replace the instruction provided by specialized scuba diving courses held by recognized schools.

CE Certification

The CE marking indicates compliance with market entry conditions and essential health and safety requirements for Personal Protective Equipment (PPE). This mark signifies legality, safety, and quality. Cressi B.C.D.s are PPE compliant with Regulation (EU) 2016/425 and national standards implementing the harmonized standard EN 1809:2014+A1:2016. The EU Declaration of Conformity is available on the website: www.cressi.com/DOWNLOAD. The product bears the CE mark and is certified for use up to 50 meters depth.

Important Safety Information

ATTENTION! The B.C.D. is NOT a life jacket and does NOT guarantee keeping your head above water on the surface.

ATTENTION! The B.C.D. is NOT a breathing system. NEVER inhale gas from the inflatable bladder, as this could cause serious physical harm.

ATTENTION! The B.C.D. must NOT be used for lifting objects or people to the surface, as this could cause serious physical harm.

Product Features

Cressi jackets offer different features to meet various diver needs.

Pneumatic Bladder (Sacco Pneumatico)

The pneumatic bladder is the sealed part of the jacket that inflates and deflates with air to adjust buoyancy. It includes a harness for wearing and securing the cylinder. Types vary by shape, bladder cell, and lift capacity.

Standard Pneumatic Bladder (Sacco Pneumatico Standard)

This is the most traditional and comfortable type. Its gilet-like shape distributes air to the back, sides, and front of the diver, wrapping around them and maintaining a vertical trim.

Rear Volume Pneumatic Bladder (Sacco Pneumatico Posteriore Back Cell)

These B.C.D.s feature an air cell located at the back, freeing the front for a lighter, less bulky jacket. When inflated, it does not constrict the body and remains independent of the straps, allowing freedom of movement.

ATTENTION! With rear-volume B.C.D.s, the air mass tends to position the diver horizontally head-down on the surface. In case of unconsciousness, the head will remain submerged. These are intended for expert divers who have completed specialized courses.

Backplate (Schienalino)

The backplate is the rear section that correctly assembles the cylinder, harness, and pneumatic bladder, connecting the B.C.D. to the diver. It supports the entire weight of the breathing apparatus (see figures 11-12).

Rigid Backplate with Double Strap (Schienalino Rigido a Doppia Fascia)

Cressi's rigid backplate is made of lightweight aluminum alloy and is designed to securely hold the cylinder using two straps. It features multiple slots for harness adjustments.

Cylinder Attachment with Rigid Backplate

The rigid backplate has two rear straps for cylinder attachment. These are crucial for supporting the cylinder's weight. Ensure they are tightened securely using their special locking buckles. (Refer to figures 1-10 for detailed attachment steps).

ATTENTION! Abundantly wet the strap before tightening it around the cylinder. This is vital for diver safety; a dry strap may stretch in water, loosening the cylinder and potentially allowing it to slip out.

Once the cylinder is secured, the top of the backplate should be positioned 5 to 10 cm below the regulator outlet (figure 14) to prevent the diver's head from hitting the regulator.

Compatible Cylinders

Compatible with single cylinders of 10/12/15/18 Liters or diameters from 171 to 216 mm.

Integrated Weight System

The Aquawing + and Aquawing Max models are equipped with an integrated weight system, allowing weights to be inserted directly into special pockets. This system eliminates the need for a separate weight belt and allows for easier, more gradual weight release in emergencies.

ATTENTION! For safety, it is recommended to keep a minimal weight on your waist belt to ensure manageable buoyancy even when releasing jacket weights, thereby preventing dangerous rapid ascents (known as "ballonates").

Integrated Weight System Details

This system consists of two fixed pockets located beside the backplate. Each pocket holds a special weight pouch with a velcro closure and a handle. To release the weights, simply open the quick-release buckle (figures 15-16-17) and pull the pouch by its handle (figures 18-19-20). Alternatively, weights can be released by gravity. For gravity release, the diver must be in a vertical position with their head towards the surface. The maximum weight per pocket is 3 Kg.

Rear Pockets (for weights)

Each pocket can hold 2.5 kg of weights (maximum 5 kg total). For more information, see figure 56 on page 14.

Available Accessories

Integrated weight system: two pockets (left and right) with weight pouches beside the backplate. Refer to the "Integrated Weight System" description in the previous chapter.

For correct mounting, consult the downloadable instructions on cressi.com in the support/operating manuals section.

Harness Adjustments

The Aquawing, Aquawing +, and Aquawing Max are one-size-fits-all annular jackets designed to adapt to all anatomies (male and female) using the patented MAS (Modular Adjustment System). A single 50mm strap wraps around the shoulders and waist, allowing quick adjustment to fit your size.

Wearing the Jacket (Tightening the Harness)

Using both hands, grasp the ends of the abdominal strap (figure 21). Pull upwards and outwards (approximately 45 degrees) from the body (figure 22). Then, close the abdominal and crotch quick-release buckles (figure 23).

Removing the Jacket (Loosening the Harness)

Open the crotch and abdominal buckles, ensuring the two ends of the abdominal strap are free. Then, grasp the shoulder strap ends just above the waist (figure 24) and push them outwards and upwards relative to the waist (figures 25-26).

D-Ring Adjustment

To change the position of the D-ring on the shoulder strap, follow the steps shown in figures 27-32 and 33-40.

Quick-Release Abdominal Buckle Adjustment

To adjust the buckle position, follow the steps shown in figures 41-46.

Pocket for Surface Marker Buoy (SMB)

Use the special pocket, located under the back cover, to store the Surface Marker Buoy (SMB) (figure 47).

Command Unit

The command unit is the core of every B.C.D., controlling the air loading and unloading functions of the pneumatic bladder. It consists of the By-Pass, the Corrugated Hose, and the Dump Valve (figure 53).

By-Pass

The By-Pass is the terminal section housing all buttons and loading/unloading mechanisms (figure 51). It must always be within easy reach as it controls all necessary jacket operations. A quick-connect fitting links it to the low-pressure hose from the 1st stage regulator, allowing the By-Pass valve to inflate the cylinder's air. This valve is designed to operate with a relative pressure ranging from 1 to 15 bar, but is recommended for use with a relative pressure between 8 and 12 bar.

Hose and Valve Information

ATTENTION! The low-pressure hose must be screwed into the regulator's low-pressure (LP or MP) outlet using a 3/8" or 1/2" adapter. High-pressure (HP) outlets have a 7/16" female thread. NEVER connect the B.C.D. low-pressure hose to an HP outlet, even with reducers, as this poses serious risks to personal safety.

ATTENTION! It is recommended to replace the medium-pressure hose if:

• It shows air leaks from the rubber part or at the metal junctions.
• It exhibits shape anomalies, whether pressurized or at rest. The hose must remain perfectly cylindrical along its entire length.
• Its surface shows alterations due to abrasion, rubbing, or small cuts.
• It has been subjected to strains beyond normal use, such as lifting the regulator or becoming snagged during sudden movements.
• It has been subjected to significant crushing or impacts, even without visible signs, as internal damage may have occurred.
• The connection thread to the regulator is damaged.

ATTENTION! Use only original Cressi hoses supplied with the product. Even for replacements, it is recommended to use original Cressi hoses.

Corrugated Hose

The corrugated hose is the rubber conduit that carries air, guides the cable for the dump valve, and houses the hose (figure 52).

Dump Valve

The quick dump valve is the plastic terminal part connected to the pneumatic bladder, used to empty it of air (figure 54).

Connecting/Disconnecting the Hose

To connect the hose to the by-pass, grip the knurled collar of the quick-connect fitting and pull it back. Simultaneously, fully insert the female hose connector into the by-pass cylinder. Release the collar and check the connection by gently pulling the hose. To disconnect, pull the collar back and remove the hose (figures 49-50).

Command Unit Functions

The command unit allows control of several functions:

1. Inflation via Button A (figure 51): Press the button to inflate.
2. Oral Inflation: Place your mouth in the housing B (figure 51). Blow gently to clear any residual water from the conduit. Continue blowing while fully pressing button C. Air will enter the bladder when button C is pressed. Release the button to stop. Repeat if necessary.
3. Deflation via Quick Dump Valve D: Pull the corrugated hose downwards (figure 52). The diver should be in a vertical position.
4. Traditional Deflation: In a vertical position, lift the corrugated hose towards the surface and press the appropriate button C (figure 53).

Flat Command Unit

The quick dump valve on this unit is smaller and lighter. It does not have an overpressure valve (figure 54).

Valves

Each Cressi jacket has a command unit with two valves for air release. The Aquawing, Aquawing +, and Aquawing Max models also feature an additional quick dump and overpressure valve located on the lower left inner side. This enhances diver safety during emergencies. This valve is operated manually by pulling a knob and must be easily accessible for emptying the bladder in most diver positions. It also functions as an overpressure valve, venting air when pressure becomes excessive.

Lower Left Internal Valve

This valve is situated on the lower left inner side, with its operating knob located immediately below the valve near the bladder edge (figure 55). It is used to dump air when the diver is head-down or horizontal, and to drain any water that may have entered the bladder at the end of a dive.

Wearing the Jacket

Using both hands, grasp the ends of the abdominal strap and pull upwards and outwards (approximately 45 degrees) from the body. Then, close the abdominal and crotch quick-release buckles (refer to the "Harness Adjustments" chapter). When supporting a heavy cylinder, it is advisable to place the jacket on a raised surface for easier donning. It is not recommended to put on the jacket while in the water.

Emergency Removal

In situations requiring rapid removal of the jacket, loosen the harness by opening the crotch and abdominal buckles, ensuring the abdominal strap ends are free. Then, grasp the shoulder strap ends just above the waist and push them outwards and upwards relative to the waist (refer to the "Harness Adjustments" chapter).

ATTENTION! When loading weights into these rear pockets, it is important to know that they cannot be released in an emergency and must be supplemented by a primary weight system. The weight should be limited so that releasing the primary weights results in positive buoyancy (figure 56).

Pre-Dive Control Procedures

1. Check the correct connection of the low-pressure hose.
2. Ensure valve locking rings are securely tightened.
3. Verify the perfect securing of the cylinder.
4. Inflate the jacket and check the pneumatic bladder's efficiency.
5. Test all Command Unit functions multiple times.
6. Verify the operation of the overpressure and quick dump valves.

During Dive

The dive begins with a preparatory stop at the surface, during which it is essential to inflate the jacket to aid buoyancy and swimming, making preliminary operations safer. For descent, the jacket must be completely emptied. During descent, it is advisable to inflate the bladder gradually to maintain a slightly negative buoyancy and prevent excessive speed. Upon reaching the bottom or a stable depth, further inflate the jacket to achieve neutral buoyancy, which makes swimming very easy. Be careful not to become too negative; a deep breath or a fin kick upwards can shift your trim from neutral to positive, potentially leading to a dangerous, uncontrolled rapid ascent (a "ballonata"). To prevent this, quickly identify trim changes and immediately dump air using the valves. When ascending, always dump air gradually to maintain slightly negative buoyancy. Use the upper valves when vertical, and the lower valve when inverted (head-down). The general principle is to use the valve closest to the surface for effective air dumping.

Inflation is performed via the by-pass button or orally. It is advisable to practice both methods, although the button is more immediate and simpler. The diver's position does not affect inflation. Deflation is performed using the command unit, by pulling it downwards or lifting its terminal part and pressing the button, or by pulling the knobs of the rear quick dump valves. Diver position is critical for deflation: be vertical relative to the surface for dumping with the command unit or the upper rear valve, and head-down (with the lower part of the B.C.D. upwards) for dumping via the lower rear valve. When dumping, close the devices immediately after air/water expulsion to prevent water from entering the bladder and altering buoyancy.

ATTENTION! With rear-volume jackets, the air mass tends to position the diver horizontally head-down on the surface. In case of unconsciousness, the head will remain submerged. Therefore, their use is intended for expert divers fully aware of these characteristics.

Warnings

As mentioned previously, incorrect B.C.D. control can lead to dangerous rapid ascents ("ballonates"), which are often responsible for serious or fatal decompression accidents. To prevent these situations, it is recommended to gradually deflate the B.C.D. during ascents to always maintain slightly negative buoyancy. Use the upper valves when in a vertical position, and the lower valve when inverted (head-down). As a general rule, always use the valve closest to the surface for effective dumping.

Limits of Use and Duration

1. Use of this B.C.D. is limited to a maximum depth of 50 meters.
2. This B.C.D. must be used exclusively with CE-marked SCUBA regulator components.
3. The B.C.D. can be used in water temperatures ranging from -2°C to +40°C (ambient range -20°C to +50°C). Dives in extreme cold conditions (below 10°C) are risky for human physiology and require specific courses.
4. A B.C.D. is not a life jacket and does not guarantee head-up flotation.
5. If using enriched Nitrox mixtures (up to 40% O2), the B.C.D. requires more frequent and thorough maintenance compared to use with breathable air.
6. No modifications to the B.C.D. are permitted, even minor ones, for safety and health reasons.
7. Use is prohibited in polluted waters or liquids with chemical-physical characteristics different from water, for safety and health reasons.
8. Use of the jacket in chlorinated water can degrade materials. It is therefore recommended not to use it in waters with high chlorine concentrations.

Maintenance

For correct maintenance, follow these instructions:

1. Always transport the B.C.D. in a protective bag.
2. Avoid contact with sharp or pointed objects that could cause abrasions.
3. Avoid prolonged exposure to sunlight.
4. After every dive (sea, lake, or pool), always rinse the B.C.D. internally and externally with fresh water. To rinse the inside, fill about 1/3 of the bladder through the command mouthpiece (while holding down the dump button), partially inflate, and shake. Empty it by opening the lower quick dump valve.
5. Every 4 or 5 dives, clean and lubricate the hose quick-connect fitting and the by-pass inlet with silicone grease.
6. Replace hose seals annually at an authorized Cressi center.
7. Annual inspection by an authorized Cressi center is recommended. For intensive use (diving centers, rentals, professional use), have the jacket serviced every three to six months at an authorized Cressi center.
8. If replacing a hose, the new hose must be of the same type as the original. Contact the manufacturer or authorized dealer if you have any doubts about the specifications.

Storage

1. It is recommended to store the jacket perfectly dry and partially inflated in a cool, dry place, preferably hung.
2. The storage environment should not have heat sources or direct sunlight.
3. Avoid environments where contact with chemicals or corrosive agents could compromise safety features.
4. Do not stack other objects on top of the jacket.
5. Leave the command unit in a flat position. The corrugated hose should not be bent or crushed.

Sizes

For sizing, refer to the Vestibility table in the final column.

Nitrox

Do not use this B.C.D. with Nitrox mixtures containing more than 40% oxygen. Using mixtures with higher oxygen percentages or adding helium or other gases (Trimix) could cause corrosion, deterioration, or premature aging of the B.C.D. and its components, potentially leading to rupture. This could result in loss of buoyancy control or leaks, causing serious injury. Mixtures with high oxygen content can also pose a risk of ignition and explosion. To use Nitrox or Trimix mixtures, you must have obtained, in addition to air diving certification, a specific certification issued by a recognized international training organization.

Product Markings

A Variable Buoyancy Jacket for scuba diving is a piece of PPE that meets European health and safety regulations. The product displays the CE marking, signifying compliance with the essential health and safety requirements outlined in Annex II of Regulation (EU) 2016/425. The EU Declaration of Conformity is available on the website: www.cressi.com/DOWNLOAD. EN 1809:2014+A1:2016 is the European standard regulating buoyancy compensators for individual protection. Products bearing this mark comply with its requirements.

Labels affixed to the product (inside, under the back cover) (figure 57) provide the following data:

• First label: Serial number of the jacket
• Second label:

ATTENTION! THIS IS NOT A LIFE JACKET AND DOES NOT GUARANTEE HEAD-UP FLOATATION.

• The use of this jacket requires specific training from a qualified instructor.
• In an emergency, surface buoyancy in a face-down position is not guaranteed for all users under all conditions.
• Before use, check the jacket's condition, its proper functioning, and for any holes or damage. Refer to the manual's instructions.
• Do not inhale the gas inside the bladder.
• Do not remove parts from the jacket.

Model: __________ Production Year: __________

A table indicates buoyancy values (in Newtons) for each jacket size. A pictogram shows the maximum cylinder volume in liters and diameter.

Cressi European Warranty

In accordance with Directive 1999/44 CE, Cressi guarantees its products against conformity defects and functional defects. To provide better service and affirm the efficiency and quality of its production processes, Cressi extends the warranty terms as follows: Jackets are guaranteed for two (2) years from the date of purchase (for rental or teaching use: 12 months for functional defects and 24 months for conformity defects). Exceptions apply to consumables, damage from scratches, punctures, abrasions, or chemicals (including chlorine), damage from sun exposure, neglect, shock, or normal wear and tear.

Cressi Jackets Features Comparison

Contact Information

Cressi Sub S.p.A.
Headquarters: Via G. Adamoli, 501
16165 Genova, Italy
Tel. +39 010 830 791
Email: info@cressi.com
Website: www.cressi.com

Find your nearest Cressi branch at www.cressi.com, in the Contact Us section.