Aqua Lung MDB Technical Manual page 35

3. While holding the dual valve assembly secure, firmly grasp the
inflator assembly and pull it in a straight line directly away from
the dual valve assembly. Check the attachment points of the spiral
hose at both the dual valve assembly and the inflator assembly. If
any signs of damage or decay can be detected, it is important to
replace the spiral hose before proceeding any further.
note: ensure that cylinder connectors, dual valve/oral
airway assembly and caps are secured to the BC prior to
submerging. Failure to do so will cause water to enter the
internal bladder.
4. Immerse the inflator and surrounding area of the spiral hose in
fresh water to wet the lower portion of the airway assembly. Grasp
the spiral hose approximately six inches above the inflator assem-
bly and pull the hose in a straight line away from the inflator with
moderate force while holding the inflator secure. Check to ensure
that no separation occurs at the attachment point and the hose
remains seated flush against the base of the inflator housing.
5. Finally, bend the spiral hose at a right angle. If the spiral hose
shows any sign of separating from the inflator assembly it is impor-
tant to replace the clamp.
6. Manually inflate the BC until it is taut and fully inflated. Press the
push button (38) and then pull down on the oral inflator to ensure
a rapid and unobstructed exhaust using both methods of deflation.
Fully inflate the BC once again and to listen closely for any signs
of leakage.
7. Connect the cylinder to the 90° cylinder connector, turn the
cylinder valve on to inflate the bladder until the overpressure relief
valve (OPRV) releases the excess air from the bladder. Turn off
cylinder and remove the cylinder from the BC. Check both caps
(61), airway (58) and cylinder connector (59) for any signs of
leakage. If no leakage is detected, let bladder stand inflated for
one hour. Check the firmness of the bladder after one hour has
passed. If the bladder has remained firm, no air loss has occurred.
If the bladder has lost air, recheck all connections, inflate BC, sub-
merge and check for leaks. If a continuous leak is detected, the
component must be disassembled and examined for damage or
contamination of the seals and seating surfaces.
NOTE: If leakage is not immediately detected, allow the BC
to stand for at least one hour to ensure that none exists.
this concludes the testing Procedures For
the Airway
35
Push to Deflate
Pull Down on
Oral Inflator To
Deflate