Buoyancy Compensator Owner's Manual - Aqua Lung

Buoyancy
Compensator
Owner's
Manual

Copyright Notice
This owner’s manual is copyrighted, all rights reserved. It may not, in whole
or in part, be copied, photocopied, reproduced, translated, or reduced to any
electronic medium or machine readable form without prior consent in writing from
Sea Quest.
©2006 Sea Quest
Buoyancy Compensator Owner’s Manual
P/N 18208, Rev. 6/06
Air Source, QuickDraw, Black Diamond, Balance, Libra, and Diva are registered
trademarks of Sea Quest.
Warnings, Cautions and Notes
Pay special attention to information provided in warnings, cautions,
and notes, that is accompanied by these symbols:
A WARNING indicates a procedure or situation
that, if not avoided, could result in serious injury
or death to the user.
A CAutIoN indicates any situation or technique
that could cause damage to the product, and could
subsequently result in injury to the user.
A Note is used to emphasize important points,
tips, and reminders.
This manual provides essential instructions for the proper
fitting, adjustment, inspection, and care of your new BC.
Because Sea Quest BC's utilize patented technology, it is
very important to take the time to read these instructions
in order to understand and fully enjoy the features that are
unique to your specific model. Improper use of this BC
could result in serious injury or death.

Buoyancy Compensators Contents
General Precautions & Warnings 2
Design & Function 3
setup 4
Attachment of the LP Hose to the First Stage Regulator ....................... 4
Attachment of the BC to the Cylinder ..................................................... 5
Rethreading the Tank Band System ....................................................... 5
Adjustments 6
Compensating Elastic Waistband .......................................................... 6
Suspension Waistband System ............................................................ 6
Size-Adjustable Multiset Waistband ................................................... 7
Black Diamond Waistband Adjustment ............................................... 7
optional Chest strap Kit .................................................................8
Double Cylinder setup ....................................................................8
Weight Integration 9
Holster Weight system - setup & Installation ...............................9
Weight Module Installation ................................................................... 0
Releasing the Weight Modules ............................................................
non-Releasable Weight .................................................................12
operation 13
Air Source Inflator/ Second Stage ................................................13
Inflation Methods ...........................................................................13
Oral Inflation ......................................................................................... 3
Power Inflation ..................................................................................... 3
Deflation Methods ..........................................................................13
Deflation Via the Oral Inflator .............................................................. 4
Deflation Via the Dual Exhaust Valve ................................................... 4
Lower OPR/ Dump Valve ..................................................................... 5
Pre-Dive Inspection 16
Maintenance 17
Dealer service 18
Warranty Information 19
Restrictions .......................................................................................... 20
Returning Your BC For Service ............................................................ 20
service Record 21

SAFETY
GENERAL PRECAUTIONS & WARNINGS
2
Before using this buoyancy compensator (BC), you must receive
instruction and certification in SCUBA diving and buoyancy control
from a recognized training agency. Use of SCUBA equipment by
uncertified or untrained persons is dangerous and can result
in injury or death.
Read this owner's manual completely before attempting to use your
BC, and become familiar with it first in a controlled environment
such as a swimming pool, in order to weight yourself properly and
to become comfortable with using its many features and adjustments.
Before every dive, perform a complete pre-dive inspection according
to the procedure prescribed in this manual, to ensure that all
components are functioning properly and no signs of damage or
leaks are present. If you find that your BC is not functioning properly
or is damaged, remove it from service until it can be repaired
by an authorized Sea Quest Dealer.
Your BC is not a lift bag. DO NOT use it to bring heavy objects to
the surface. Doing so may cause permanent damage to the BC,
and could also result in serious injury or death due to embolism or
decompression sickness.
In an emergency such as an out of air situation or uncontrolled
descent, it is important to remove and jettison weight immediately.
DO NOT depend solely on using your BC's power inflator to lift you
to the surface.
In the event of an uncontrolled, rapid ascent, it is important to immediately
begin venting air from the BC. Continue venting air to
slow your ascent rate if neutral buoyancy cannot be reestablished.
DO NOT inhale from your oral inflator. The BC may contain harmful
contaminants or gasses, which could cause suffocation or injury.
Factory prescribed service for this BC must be performed at least
once annually by a factory trained Sea Quest technician who is employed
by an authorized Sea Quest Dealer. Annual service consists
of a complete overhaul of the power inflator, and a general airleak
inspection of the bladder and valve connections.
Disassembly, repair, or lubrication must not be attempted by persons
who are not factory trained and authorized by Sea Quest.
Unauthorized service will render the warranty null and void.

Buoyancy Compensators
DesIGn &
FUnCtIon
A buoyancy compensator (BC) is NOT a lifejacket! It is not designed
to provide face-up flotation in all situations, and therefore
it does not meet U.S. Coast Guard regulations for a life preserver
or personal flotation device (PFD). If you become unconscious in
the water without a buddy present to immediately assist you, you
may suffer serious injury or death from drowning.
Your buoyancy compensator is primarily designed to help you maintain
neutral buoyancy while in a comfortably balanced, face-down swimming
position underwater. It is also designed to provide you with flotation so
that you can rest on the surface, but it is not designed to function as a
life preserver or personal flotation device (PFD). In order to meet U.S.
Coast Guard regulations, a PFD must be designed so that it automatically
rights you to a face-up position and holds your head out of the water on
the surface. The design characteristics of a personal flotation device are
therefore different from those of a buoyancy compensator. The ability of
any flotation device to float you in a face-up position can also be affected
by other diving equipment you wear, including a cylinder or exposure suit,
and whether it can be inflated before you lose consciousness.
For this reason, it is important to always dive with a buddy, and maintain
close proximity with them at all times. Do not depend on any flotation
device to hold your face above the surface in the event that you are
rendered unconscious in the water while diving.
Although this manual provides some basic guidelines for certain
buoyancy control techniques, it is not a substitute for training from
a professional diving instructor. Failure to weight yourself properly
may create a hazardous condition that could lead to serious
injury or death. If you are unsure how to weight yourself in order
to achieve optimum buoyancy underwater and on the surface, do
not dive until you have obtained the necessary instruction from
your diving instructor or an authorized Sea Quest Dealer.
If you have any questions regarding your Buoyancy Compensator or
these instructions, contact your Sea Quest Dealer or Sea Quest at:
(760) 597-5000.
3

SETUP
Sea Quest recommends that you should bring your buoyancy
compensator, together with your regulator, to your Authorized Sea
Quest Dealer for the installation of the LP inflator hose and other
accessories. The retailer can also answer any questions you may
have pertaining to the information in this manual. If it is not possible
to return the BC with your regulator to your Authorized Sea Quest
Dealer, you may install the low pressure quick disconnect inflator
hose by carefully performing the steps in the following procedure.
4
DO NOT connect the inflator hose to a high pressure (HP) port
(greater than 200 psi). This may cause the hose to burst when
pressurized, which can result in serious injury.
Attachment of the BC LP Hose to the First Stage Regulator
Most regulators have low pressure (LP) ports (3/8"/9.5mm) that are
smaller than the high pressure (HP) port(s) (7/16"/11mm). However,
some older regulators have HP and LP ports that are the same size
(3/8"/9.5mm).
All Sea Quest regulators, and most provided by other manufacturers,
have a high pressure port that is clearly marked “HP,” with a small restrictive
orifice that is visible when the port plug has been removed.
If your regulator has all 3/8" (9.5mm) ports and you cannot decide if a
port is LP or HP, use the following procedure:
1. Connect your submersible pressure gauge to the port in question.
2. Attach the regulator to a fully charged cylinder and open the cylinder
valve.
3. Take a pressure reading. If the gauge is connected to an LP port, it will
show less than 200 psi (13.6 bar).
Once you have located the desired LP port, follow this
procedure:
1. Remove the inflator hose from the power inflator body by gripping the
grooved sleeve over the quick disconnect coupling with your thumb
and forefinger and sliding the sleeve back.
2. Remove the port plug from a low pressure port on the regulator using
an appropriate size hex wrench or key.
3. Check to ensure the O-ring is present and in good condition, and screw
the threaded end of the hose into the port. Tighten to 40 inch-pounds
(7kg/cm) with a 9/16" wrench.

Buoyancy Compensators
Attachment of the BC to the Cylinder (Figure 6)
note: Sea Quest BC cylinder bands adjust for all standard cylinder
diameters: 6.9" (17.5 cm), 7.25" (18.5 cm), and 8.0" (20.3 cm).
1. Wet the cylinder band and then slide it over the cylinder so that the BC
is at the desired position in relation to the cylinder valve.
2. While holding the cylinder secure, pull the free end of the cylinder band
until there is a very tight fit between the pack and the cylinder.
3. Close the buckle halfway to hold the cylinder band taut, and thread the
end of the band through the open slot in the end of the buckle.
4. Pull the cam buckle closed so that it lies flat against the cylinder.
Attach the loose webbing end to the velcro on the cylinder band.
5. Test the tightness by pushing/pulling the back frame and cradle.
Rethreading the tank Band system
1. Start with the metal bale as close to the pack frame as possible. This
provides the greatest range of adjustment.
2. With the buckle fully open, thread the cylinder band up the middle slot
and back down through the slot closest to the metal bale (Figure 1 and
3). Pull the end to increase the tension in the band.
3. Close the buckle halfway to prevent the webbing from slipping and
thread the webbing through the open slot in the end of the buckle
(Figure 2 and 3).
Figure 1
setUP
The cylinder band may initially stretch as it becomes wet. Always
wet the band prior to making the final adjustment, and apply
enough tension to ensure that the cylinder is held completely secure.
Test this connection before every dive. If the cylinder were
to slip free from the BC while you are diving, you may lose your
air supply, which could lead to serious injury or death.
Figure 2
Figure 3
Complete threading
path of the tank band.
5

ADJUSTMENTS
Compensating Elastic Waistband (Figure 4)
Your BC may feature a padded cummerbund waistband that is connected
to the harness with heavy duty elastic tensioning bands. These
elastic bands allow the waistband to compensate for changes to body size
resulting from exposure suit compression during the dive.
To gain the maximum benefit from this feature, stretch the waistband
snugly around your waist and fasten the Velcro secure with an overlap
of at least 3". Any excess
can be tucked under the Figure 4
pocket area.
On the surface, the
waistband should fit as
snug as possible without
constricting or binding,
while maintaining enough
tension to fit securely at
depth.
Suspension Waistband System (Figure 5)
Your BC may feature a padded compensating cummerbund waistband
suspended by a 1" (2.5 cm) strap that weaves through a series of
channels on the BC and the waistband. The suspension straps provide
for an unchanging comfortable fit through the different stages of inflation
of the BC. When inflating the BC, the air cell will move away from the
body slightly, preventing any uncomfortable squeezing of the torso while
maintaining a secure fit.
6
Figure 5
Suspension strap
and channels
Heavy duty compensating elastic band

Buoyancy Compensators
Size-Adjustable Multiset Waistband (Figure 6)
Your BC may feature the Multiset waistband system. Adjustments
to the built-in Multiset waistband, if necessary, should be made prior to
the dive. To shorten or lengthen the waistband, simply unhook the cummerbund
clip and reinsert it into one of the three possible clip channels
to accommodate the proper fit. A clip lock is located on both of the waistband
clips. To open the clip lock, place your forefinger on the underside
of the protruding end waistband clip and apply pressure to the tab with
your thumb. After adjusting the Multiset waistband, close the clip lock by
pushing the end of the waistband clip back into the clip lock. In order to
properly center the Velcro closure at the front of the waistband, the same
adjustment must be made to the other side. Be sure to wear your usual
exposure suit when adjusting the waistband.
Clip Channels
Protruding
end of
waistband clip
Waistband Clip
Clip Lock
(Thumb Tab)
Figure 6
ADjuStMentS
Cummerbund Clip
Black Diamond Waistband Adjustment (Figure 7)
The waistband of the Black Diamond BC consists of two separate sections
which are each attached to the rear panel with two stainless steel
nut and bolt combinations.
Hardware
Attachment points
for twin cylinder bands
Waistband attachment points
Figure 7
7

ADJUSTMENTS
Black Diamond Waistband Adjustment (continued)
If necessary, the waistband can easily be remounted onto one of three
grommeted attachment points by performing the following procedure:
1. To remove the bolts which fasten each section to the rear panel, apply
a medium size phillips screwdriver to loosen and remove each bolt,
while holding the nut secure with a 3/8" open end wrench or socket.
2. Reposition each section behind the rear panel so that the grommeted
holes are aligned with the same adjustment points on either side. Reinstall
both bolts and nuts to securely fasten each section in place.
3. Don the BC over your exposure suit to check the fit.
OPTIONAL CHEST STRAP KIT (FIGURE 8)
Certain model BC's have D-rings which can accept
the addition of a chest strap kit to hold the shoulder
straps together across your sternum. This kit may be
purchased separately from your dealer.
Figure 8
DOUBLE CYLINDER SETUP
Some Sea Quest BC’s are adaptable for double cylinder setup, with
pack frames which feature recessed and predrilled holes to accept retaining
bolts for twin bands. Before adapting your BC for use with double
cylinders, however, it is important to first compare the lift capacity of your
particular size and model with the buoyancy specifications of the cylinders
you intend to use. When fully charged and worn together as doubles,
some cylinders may create enough negative buoyancy to counteract the
amount of lift your BC can provide. At depth, this can lead to a dangerous
situation if your wetsuit becomes compressed and you can no longer
achieve positive buoyancy by jettisoning weight.
Additionally, the structure of the back pack will not support the weight
of an oversized set up. Sea Quest BC’s may only be used with standard
aluminum (maximum 80 cf) or steel (maximum 100 cf, 3,500 psi) tanks.
High volume, low pressure steel tanks can be especially hazardous when
worn as doubles, due to their weight and buoyancy characteristics.
8
The use of oversized double set ups can lead to a dangerous
situation underwater, including your inability to achieve
positive buoyancy, or structural failure of the backpack. Such
an event while diving may separate you from your primary air
source, and could lead to serious injury or death.

Buoyancy Compensators
WeiGht inteGrateD buoyancy comPensators
Your BC may feature a built-in weight holster system which can be
used to either supplement or replace a conventional weight belt. This
unique and patented feature allows you to quickly remove and jettison
either one or both of two weight modules in the event of an emergency,
thereby maintaining better control over your rate of ascent. These weight
modules can also be easily reloaded into their respective holsters while
you are wearing the BC. This makes Sea Quest weight integrated BC's
much easier to don than other BC's which must be fully loaded with
weight prior to donning.
If your Sea Quest BC is a weight integrated model, it is very important
to read the following instructions, and become thoroughly familiar with
the correct methods for installing and releasing weight before you dive
with it.
Holster Weight system - setup & Installation
The holster system features two interchangeable weight modules
which can be filled with either block weights or “soft weight” (pouches
containing lead shot), in increments of 5 pounds or less (Figure 9). For
maximum comfort, soft weight is strongly recommended. With the exception
of the Black Diamond *, these weight modules can each hold a
maximum of 10 pounds (20 pounds total).
Figure 9
Release Handle
Front Side
To fill the weight modules, it will
be necessary to first remove them
from their holsters, if they are already
installed, by firmly pulling the release
handle toward the center of the cummerbund
(Figure 10).
Weight Modules
Figure 10
Back Side
Pull handle forward
and away from BC
to release weight
module.
* Black Diamond modules can each hold 6 pounds (32 pounds total).
WeIGHt
InteGRAtIon
Velcro
Closure Flap
9

WEIGHT
INTEGRATION
10
The weight modules in some models are specially pre-formed to
fit the contour of your waist. Do not attempt to bend or straighten
a pre-formed module.
Lift up each module's velcro flap, and
lay it back over the handle. While holding
the module fully open, insert the weight
and then close the velcro flap (Figure 11).
When each module has been loaded with
weight, firmly run your hand over the flaps
to seal the velcro securely in place.
When installing weight, it is important to
give consideration to balance, and to shifting that may occur if the weight
compartments inside each module are partially filled. Always ensure that
the weight is divided equally between the two holsters for optimum balance
in the water. You may otherwise experience a tendency to roll to one
side if one module is more heavily loaded than the other. If the amount of
weight that is needed does not completely fill each module, arrange the
weight within each compartment to minimize any shifting that may occur.
Experiment with different sizes of weight until you arrive at the configuration
that best suits your personal preference and provides maximum
comfort.
Weight Module Installation
The weight modules can easily be installed while you are wearing the
BC fully deflated. In fact, Sea Quest strongly recommends that you do not
attempt to don your BC when it is fully loaded with weight and attached
to a cylinder. You may otherwise risk injury, due to muscle strain or a
temporary loss of balance.
To install either module, deflate
the BC and slide the closed end
of the module into the opening of
the holster, with the smooth panel
facing out. Fold the retaining flap
down over the velcro on the outside
of the BC, and firmly run your
hand over the flap to securely seal
the velcro (Figure 12).
Velcro attachment
on BC
pocket
Velcro attachment
on weight module
is located on the
back of the flap.
Insert the weight
into the weight
module.
Figure 12
Release handle
Figure 11

Buoyancy Compensators
Before every dive, it is important to make sure the Velcro flap
of each weight holster is securely closed, in order to prevent
the modules from falling out. Involuntary release of both weight
modules underwater can cause a sudden increase in buoyancy
and rapid ascent, and could lead to serious injury or death due to
arterial gas embolism, decompression sickness, or drowning.
Releasing the Weight Modules
Unlike a weight belt, which has only
one release mechanism, each weight
module is connected to the BC independently
of the other and must be released
accordingly. This provides you
with the option of being able to jettison
one module at a time, and thereby
maintain better control of your ascent
rate in an emergency.
In the event that you need to jet-
Figure 13
Pull handle forward
and away from BC
to release weight.
WeIGHt
InteGRAtIon
tison weight, simply pull the release handle of each module towards the
center of the cummerbund (Figure 13). When the module is completely
disengaged from its holster, hold it out and away from your body before
dropping it.
Ensure that your weight modules are not obstructed by any
straps, lines, etc. DO NOT add weight to the BC's accessory
pockets, as this may interfere with the removal of the modules in
an emergency. Failure to ditch weight in an emergency may lead
to serious injury or death due to drowning.
To avoid injuring other divers, always look below you before dropping
weight.
In addition to becoming familiar with the holster weight system yourself,
it is very important to explain its function and design to your dive
buddy, to ensure that they are equally familiar with it.

OPERATION
NON-RELEASABLE WEIGHT
To supplement the releasable weight you carry
in your BC's holsters or on your weight belt, Sea
Quest weight integrated BC's are also designed
to carry up to 10 pounds of auxiliary weight in two
fixed pouches (maximum 5 pounds each). These
are located on the rear of the BC, on either side of
the cylinder pad (Figure 14).
This weight is non-releasable, however, and
must not be used as your primary source of
ballast. After filling the fixed pouches with weight,
it is extremely important to check your buoyancy in Figure 14
the water while wearing the BC attached to a fully
charged cylinder. (Refer to the cylinder mounting instructions on page 5.)
While standing in chest deep water, deflate the BC completely and check
to ensure that you can easily achieve positive buoyancy by jettisoning
your releasable weight.
12
The non-releasable compartments are intended strictly for containing
auxiliary weight, used in addition to releasable weight. Do
not fill either compartment with weight unless you are certain you
can achieve positive buoyancy at depth by releasing your weight
modules or weight belt while your BC is completely deflated.
POWER INFLATOR OPERATION (FIGURE 15)
Figure 15 Dual Exhaust
Valve
Mouthpiece
Power Inflation
Button
Oral
Inflation/
Deflation
Button
Air Source (optional)
Power Inflation
Button
Oral
Inflation/
Deflation
Button

Buoyancy Compensators
air source inFlator/ seconD staGe (oPtional)
To streamline your system with less hoses, you may consider purchasing
the Air Source – a backup second stage regulator with an integrated
power inflator. This option is available separately from your authorized
Sea Quest Dealer, and can be installed onto any Sea Quest BC.
inFlation methoDs
oPeRAtIon
➤ Oral Inflation
To orally inflate your BC, place your lips on the oral inflator mouthpiece
and exhale a small amount of air into the mouthpiece. This will purge any
water that may still be in the housing. While continuing to exhale into the
mouthpiece, depress the oral inflator button to inflate the BC. Immediately
after exhaling, release the oral inflator button to prevent air from escaping.
➤ Power Inflation
To connect the LP hose, grip the grooved sleeve at the connection fitting
with your thumb and forefinger, and slide the sleeve back. Place the
fitting over the quick disconnect plug, and firmly push inward while releasing
the sleeve. Check to ensure that the hose is securely attached.
To inflate your BC with low pressure air, depress the power inflator button.
Do not hold the inflator button depressed continuously underwater,
as this could cause you to become excessively buoyant. Instead, depress
the button in short bursts until you become neutrally buoyant.
Do not rely on the power inflator as the only means to inflate your
BC. It is important to practice the technique for orally inflating
your BC so that you are prepared for any type of malfunction or
out of air situation that could render the power inflator inoperable.
You may otherwise be unable to achieve positive buoyancy in an
emergency, which could lead to serious injury or death.
DeFlation methoDs
Throughout the course of a dive, it will be necessary to release air
from the BC using one of the three methods described in the following
instructions. Each method uses a valve that is in a different location. The
method you choose at any time may depend on whether you are making
your initial descent feet-first, head-first, or maintaining neutral buoyancy
underwater. Always remember to utilize the valve that is at the highest
point on the bladder, depending on your position in the water.
3

OPERATION
14
Whenever you ascend, whether intentionally or accidentally, you
must simultaneously vent air from the BC as needed to maintain
buoyancy control. If air is allowed to expand inside the BC unchecked,
you may experience a rapid, uncontrolled ascent, which
could lead to serious injury or death if not immediately corrected,
due to arterial gas embolism, decompression sickness, or drowning.
To regain buoyancy control during an uncontrolled ascent,
you must continuously exhaust air from the BC until you have
stopped ascending.
➤ Deflation Via the Oral Inflator (Figure 16)
Air can be vented through the inflator by holding
the inflator above your head and depressing
the oral inflator button. This method can be used
for making an initial feet-first descent, but is not
very useful while you are in a facedown swimming
position.
Holding the oral inflator button depressed while the BC is deflated
may allow water and debris to enter the air bladder.
➤ Deflation Via the Dual Exhaust Valve (Figure 17)
Inside the power inflator’s corrugated hose is a cable
that attaches the power inflator to the dual valve at
the top of the airway assembly. You can vent air from
the BC by gently tugging straight down on the power
inflator, or on the Trim Grip handle that is provided
with the Air Source.
This exhaust valve provides an effective and convenient
way to vent air from the BC while in either an
upright or facedown swimming position. It also functions
as an overpressure relief (OPR) valve that will
open automatically to relieve air pressure inside the
bladder when it reaches approximately 2.5 psi over
ambient. This feature is very critical for preventing
stress or damage to the BC's bladder.
Figure 16
Figure 17

Buoyancy Compensators
➤ Lower OPR/ Dump Valve (Figure 18)
In addition to the overpressure relief valve
that is integrated into the dual valve, most Sea
Quest BC's also have a redundant overpressure
relief valve that is located on the lower
rear portion of the air bladder. The primary
function of this valve is to relieve excess air
pressure inside the bladder, but it can also be
opened manually by pulling on the ball and
cord assembly to quickly dump air.
This valve is most useful for emptying the
bladder of air as quickly as possible while
making a head-first descent, or swimming in a
face-down position.
oPeRAtIon
Figure 18
The proper function of either overpressure relief valve is vital
to prevent damage to the BC bladder. Unauthorized service or
tampering may render these valves inoperable, and could cause
the bladder to leak or burst. This type of damage is not repairable,
and is not covered under the terms and conditions of Sea
Quest's Warranty.
Most training agencies recommend that you should descend in
an upright, 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.
5

PRE-DIVE
INSPECTION
PRE-DIVE INSPECTION
Before each use, the BC must be given a thorough visual inspection
and functional test. NEVER dive with a BC that shows signs of damage
to its bladder or valving until it has received a complete inspection and
service from an authorized Sea Quest Dealer.
Inspection Checklist:
1. Connect the power inflator to a clean air source, via the LP quick disconnect
hose. Depress and release the inflator button intermittently
to ensure that the airflow is unobstructed, and that the airflow stops
completely when the button is released.
2. Manually operate the lower overpressure relief (OPR) valve by pulling
on the attached ball and cord to release air from inside the BC, and
then fully inflate the BC until the OPR valves open. Examine the operation
of the OPR valves by repeatedly inflating the BC to ensure that
they open to relieve excess pressure, yet close immediately afterward
to allow the bladder to remain taut and fully inflated.
3. Check the function of the oral inflator button, dual exhaust valve, and
overpressure relief/ manual dump valve (see Deflation Methods) to
ensure a rapid and unobstructed exhaust from each valve. Fully inflate
the BC once again, and disconnect the Power Inflator from the air
source to listen closely for any leakage.
16
If any leakage can be heard, or if the bladder begins to deflate
within 5-10 minutes, DO NOT attempt to use the BC until it has
received service from an authorized Sea Quest Dealer.
4. Make a final check of the cylinder band's tension to ensure that it has
not loosened due to stretching. Retighten if necessary.
5. Before entering the water, check both weight modules to ensure that
they are correctly fastened to the BC. (See Setup & Installation.)
Loss of the releasable weight modules can occur if the velcro
retaining flap is not securely sealed. Involuntary release of both
weight modules can cause a sudden increase in buoyancy and
rapid ascent, and could lead to serious injury or death due to arterial
gas embolism, decompression sickness, or drowning.

Buoyancy Compensators
CARe &
MAIntenAnce
Post Dive care & maintenance
With proper care, your Sea Quest BC will provide many years of reliable
service. The following preventative maintenance must be performed
to extend the life of your BC:
● Avoid prolonged exposure to direct sunlight and extreme heat. Nylon
fabric can quickly fade when exposed to the sun's ultraviolet rays, and
extreme heat may damage the welded seams of the BC's bladder.
● Avoid repeated or prolonged use in heavily chlorinated water, which
can cause the BC fabric to discolor and decay prematurely.
● Do not allow the BC to chafe against any sharp objects or rough surfaces
that could abrade or puncture the bladder. Do not set or drop
heavy objects such as block weights on the BC.
● Avoid any contact with oil, gasoline, aerosols, or chemical solvents.
● To preserve the life of the bladder, thoroughly rinse it inside and out
with fresh water after every day of use, using the following procedure:
1) Pressurize the power inflator with low pressure air via the LP hose.
2) Using a garden hose, direct water through the oral inflator to flush the
interior of the bladder, and then thoroughly rinse the exterior of the
BC.
Before rinsing, ensure that the power inflator is pressurized with
air. This will prevent debris and contaminants from entering the
valve mechanism if the inflator button is accidentally depressed.
3) Completely drain the bladder of water, either through the oral inflator or
through the OPR valve, being careful to avoid operating the inflator.
4) Inflate the BC, and allow it to dry inside and out. Then store it partially
inflated, away from direct sunlight, and in a clean, dry area. Do not
store the BC in an enclosed space, such as a car trunk, where temperatures
may fall below 0ºF (-18ºC) or rise above 120ºF (49ºC).
DO NOT attempt to perform any disassembly or service of your
Sea Quest BC. Service requiring disassembly must only be
performed by a factory trained Sea Quest technician. To obtain
service or repair, such as power inflator service or replacement of
the bladder, see your local authorized Sea Quest Dealer.
7

DEALER SERVICE
DEALER INSPECTION & SERVICE
1. It cannot be assumed that the BC is in good working order on the
basis that it has received little use since it was last serviced. Remember
that prolonged or improper storage can still result in internal
corrosion and/or deterioration of O-ring seals and valve springs,
as well as bladder seam degradation.
2. It is imperative that you obtain prescribed dealer service for your
BC at least once a year from an authorized Sea Quest Dealer, including
a general air leak inspection and complete overhaul of the
power inflator and OPR valve. Your BC may require this service
more frequently, depending on the amount of use it receives and
the environmental conditions it is used in.
3. If the BC is used for rental or training purposes in salt, chlorinated,
or silted fresh water, it will require prescribed dealer service every
three to six months. Use in chlorinated water will greatly accelerate
the deterioration of most components, and require more frequent
service.
4. DO NOT attempt to perform any disassembly or overhaul service of
your BC. Doing so may cause the BC to dangerously malfunction,
and will render the Sea Quest Warranty null and void. All service
must be performed by an authorized Sea Quest Dealer.
18
IT IS IMPORTANT TO OBTAIN PRESCRIBED DEALER SERVICE
FOR YOUR BC AT LEAST ONCE ANNUALLY, FROM AN AUTHO-
RIZED SEA QUEST DEALER. YOUR PERSONAL SAFETY AND
THE MECHANICAL INTEGRITY OF YOUR BC DEPEND ON IT.
NOTE: For your convenience, an Annual Service Record is provided
in the rear of this manual.

Buoyancy Compensators
WARRAnty
NOTE: To validate your warranty, please complete and return the
enclosed warranty registration card within 15 days of purchase.
Warranty inFormation
All warranty transactions must be accompanied by proof of original
purchase from an authorized Sea Quest Dealer. Be sure to save your
sales receipt, and present it whenever returning your BC for warranty
service.
Limited Lifetime Warranty
sea Quest warrants to the original purchaser that the product will
remain free from defects in material and workmanship throughout
its useful life; provided that it receives normal use, proper care,
and prescribed dealer service subject to those restrictions stated
below..
this warranty does not apply to units subjected to misuse, abuse,
neglect, modification, or unauthorized service.
this limited warranty is extended only to the original purchaser
for products purchased directly from an authorized sea Quest Dealer,
and is not transferable.
this warranty is limited to repair or replacement only at the discretion
of sea Quest.
It is dangerous for untrained and uncertified persons to use the
equipment covered by this warranty. Therefore, use of this equipment
by an untrained person renders any and all warranties null
and void. Use of SCUBA equipment by anyone who is not a
trained and certified diver, or receiving training under the supervision
of an instructor, could lead to serious injury or death.
This warranty gives you specific legal rights. You may have
rights which vary from state to state and country to country.
SEA QUEST DISCLAIMS AND EXCLUDES ANY LIABILITY
FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. SOME
STATES IN THE U.S. AND CERTAIN FOREIGN COUNTRIES
DO NOT ALLOW EXCLUSIONS OR LIMITATIONS OF LIABILITY
FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THIS
MAY NOT APPLY TO YOU.
19

WARRANTY
Restrictions
The following restrictions apply to this warranty:
1. This warranty extends to all power inflator parts, and to the seams of
the BC bladder. Factory prescribed annual service by an authorized
Sea Quest Dealer is required.
2. This warranty does not extend to abrasion, punctures, or tears of the
bladder, or seam separation caused by chemical attack; including prolonged
exposure to chlorine.
3. This warranty does not extend to damages caused by improper use,
improper maintenance, neglect, unauthorized repairs, modifications,
accidents, fire, or casualty.
4. Cosmetic damage, such as scratches, fraying, and nicks are not covered
by this warranty.
5. This warranty does not extend to equipment used for rental, commercial,
or military purposes.
6. This warranty covers products purchased in the USA. For warranties
that may apply elsewhere, please contact your local representative.
Returning Your BC For Service
Whenever your BC requires annual service or warranty repair, Sea
Quest recommends that you bring it to an authorized Sea Quest Dealer.
If you need to return products for service, follow these steps:
1. Provide the dealer with photocopies of your original sales receipt and
service records if the product is more than one year old.
2. If you intend to ship directly to Sea Quest for warranty service, you
must first obtain a Return Merchandise Authorization (RMA) number
from the factory by calling 1-760-597-5000.
3. Write the RMA number on the address label. This is important.
4. Send photocopies of your original sales and service receipts, along
with the product and a letter detailing the problem as precisely as possible.
Include your name, address, and daytime telephone number in
the letter.
5. Ship the package to:
Sea Quest
2340 Cousteau Court
Vista, CA 92081
Attention: Repair Dept.
You must prepay all freight charges. Sea Quest does not accept
C.O.D. shipments.
20

Buoyancy Compensators
annual service & insPection recorD
Serial Number ___________________________
Purchase Date ___________________________
Store Name ______________________________
SeRVIce RecORD
note: Serial number
is located behind inflator
hold-down
Date Dealer Name City, State Tech's Initials
2

IMpOrtant nOtICe aBOut MaIl Order
sales Of sea Quest prOduCts:
Beware of any retailer that offers to sell and ship our life
supporting products by mail, for orders placed by phone or
the Internet. These retailers are NOT authorized Sea Quest
Dealers. All authorized Sea Quest Dealers must execute a
Dealer Agreement that does not allow the sale of Sea Quest
products except "in-store". Many Sea Quest dealers advertise
on the Internet, but they are not allowed to deliver our products
other than "over-the counter". This is our assurance that you
will receive the proper pre-sale, point-of-sale, and post-sale
assistance, and that only trained and certified divers will use
our products.
If you obtain our product from one of these retailers, your
warranty is therefore not valid and we cannot offer you the
assurances of quality and satisfaction afforded by the Sea
Quest Warranty Program. If you would like to verify whether or
not a retailer is an authorized Sea Quest Dealer, please call:
1-(760) 597-5000

2340 Cousteau Court
Phone 760-597-5000
©Aqua Lung International
www.sea-quest.com
Vista, CA 92081
Fax 760-597-4900
Doc. No. 18208 rev. 6/06