Pre-Dive Inspection - Aqua Lung MDB Technical Manual

16

PRE-DIVE INSPEctIoN

WARNING: Before each use, the mDB must be given a thorough visual inspection
and functional test. NEVER dive with an mDB that shows signs of damage to its
bladder or valves until it has received a complete inspection and service from an
authorized repair technician.
1. Orally inflate the MDB until the bladder is completely full. Manually pull down on the oral inflator
assembly to check the function of the REV, only a pull of 7mm (.25 in) is required once resistance
is felt (Fig. 12). Orally inflate the MDB again, squeeze the jacket until the OPRV opens to relieve
excess pressure (Fig. 13). Let go and verify it reseats and keeps the bladder fully inflated. Use
cylinder air if required to activate OPRV.
2. Fully inflate the MDB once again and let it sit for 10 minutes to check for leaks and firmness
(Fig. 14).
WARNING: If you can hear any leaks or if the bladder begins to deflate within 10 min-
utes, Do Not attempt to use the mDB until it has received service.
PuLL DoWN
oN oRAL
INFLAtoR
Fig. 12
Fig. 14
mDB technical manual
Fig. 13