4Pro QDi3 BC Owner’s Manual
General Precautions & Warnings
Before using this buoyancy compensator (BC), you must receive instruction
and certication in SCUBA diving and buoyancy control from a recognized
training agency. Use of SCUBA equipment by uncertied 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 rst 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 nd that your BC is not functioning properly or is damaged, remove it
from service until it can be repaired by an authorized Aqua Lung/SeaQuest
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 inator 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 inator. 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 technician who is employed by an authorized
Aqua Lung/SeaQuest Dealer. Annual service consists of a complete
overhaul of the power inator, and a general air leak 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 Aqua Lung/SeaQuest.
Unauthorized service will render the warranty null and void.
This BC is designed for use with compressed air or Nitrox/EAN (enriched
air nitrox) mixtures not exceeding 40% oxygen. Any use of gas mixtures
with increased oxygen content or the addition of helium or other
substances may cause corrosion, deterioration and/or premature aging
of the BC leading to component failure of the metal and rubber parts.
The component failures could lead to a loss of buoyancy control and/or
pressure integrity of the BC resulting in injury or death. Non-standard
breathing mixtures may also present a risk of re or explosion. The use
of Nitrox/EAN requires additional training. Failure to observe this warning
may result in injury or death. Use only nitrogen/oxygen mixtures containing
no more than 40% oxygen.
SAFETY INFORMATION
