Hollis Explorer User Manual - page 102
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is acceptable for the following reasons:
1. Water entering the counterlung is forced out again by the LCV system.
2. A small amount of water will not affect the CO
2
absorbent performance
Moving water into the water removal system allows you to purge the water
through the LCV.
To move water into the LCV system: Close the mouthpiece, put the hos-
es above your head and shake the hose, squeezing the exhale hose like
squeezing an accordion will move water down the hose quickly.
Now return to the loop and keep breathing normally.
If water continues to enter the loop, attempt to locate the leak and fix it. A
common leak point might be a mouthpiece that is not fully open or closed
or a rubber mouthpiece, which has not been properly secured to
the BOV.
If water is in the inhale hose, again close the mouthpiece and move the
water across to the exhale hose and evacuate as above.
BAILOUT AND ASCENTS
Open circuit bailouts become necessary if a loop is unbreathable (high
CO
2
or low/high PO
2
) or flooded. In the unbreathable scenario the loop will
need to vent during the ascent. This is done automatically by the OPV and
the LCV combined.
WARNING: Ascents must be practiced on the training course
while on open circuit and with a loop full of gas. Venting will
occur naturally if the diver is weighted correctly.
With a flooded loop the diver must carry sufficient additional buoyancy to
overcome approximately 5 kg/42 Newtons (11 lbs) of buoyancy loss.
IN-WATER SKILLS
In-water skills are a vital element of dive training. It is important, especially
when teaching complex skills or equipment, that training is progressive.
Non-progressive training only serves to scare and confuse students and
!