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SuperLite
®
17B
20
© ⅯⅯⅩⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 120613005
Neck
Dam
Neck
Clamp
Yoke
Rear
Hinge Tab
Safety
Pin
Latch
Catch Body
Hinge
The yoke and latch catch assembly must work properly
together.
Oral/Nasal
Mask
Regulator
Mount Nut
O-ring
Equalizing
Device
Valve
Body
Oral/Nasal
Valve
The oral nasal mask, valve, and equalizing device.
The oral nasal attaches to the regulator mount nut.
This separates the breathing gas flow from the rest
of the dead-air space inside the helmet, subsequently
reducing the potential for carbon dioxide buildup.
WARNING
Always be sure the
oral nasal valve is prop-
erly mounted in the
oral nasal mask. If the
valve is mounted improperly or is absent
this can lead to a higher CO
2
level inside
the helmet. A higher CO
2
level can cause
dizziness, nausea, headaches, shortness
of breath, or blackout.
2.8.7 Communications
In the SL 17, both earphones and microphone are
wired in parallel to the communications system.
The communications can be equipped with either a
waterproof connector, or binding posts for bare wire
connection.
Electrical signals are sent to, and received from, the
surface through the umbilical wires. An amplifier
boosts the signals to the desired volume for the sur-
face and the diver.
2.8.8 equalizing the Middle ear
A nose block device allows the diver to block their
nose to provide an overpressure in their middle ear
for equalization. The blocking pad on the inside of
the oral nasal mask is attached to a shaft which passes
through a packing gland to the outside of the helmet.