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© ⅯⅯⅩⅢ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130115001
31
SuperLite
®
27
®
without the main gas supply, and the gas consump
-
tion rate. Regardless of the cylinder used, it should
be of sufficient volume to allow the diver to ascend
at a normal rate or transit to a point where a normal
gas supply can be reestablished.
European C.E. ONLY
In European countries that have adopted C.E. certi
-
fication,
only C.E. certified cylinders are allowed to
be used and must have a minimum charged capacity
available to the diver of 1400 N/l (50 scf). The emer
-
gency gas supply must only be fitted with a KMDSI
first stage regulator and have a KMDSI over pressure
relief valve installed (Part # 200-017).
The relief must
be adjusted to start lifting at approximately 20 p.s.i.g.
(1.4 bar) above the regulator intermediate setting.
The purpose of the relief valve is to allow pressure to
vent off in the event the first stage regulator develops
a leak or creeps. Without a pressure relief valve, the
hose could rupture and the emergency gas supply
would be lost.
The emergency air/gas tank must be fitted with a good
quality first stage regulator to reduce the pressure to
Most commercial divers wear a harness (separate
from the weight belt) that is used for several purposes.
The harness is fitted with large metal rings (usually
brass or stainless steel). The umbilical is hooked into
one of these rings to keep any strain off the helmet.
In addition, the rings on the harness are used to hang
tools and other equipment. Usually the harness is also
designed to provide a means of lifting an unconscious
diver from the water. This harness is the best method
of securing the emergency breathing gas to the diver.
A small tank can be mounted horizontally on the
lower rear or front, while larger tanks are usually
mounted vertically in the center back similar to a
SCUBA diver’s tank. Some harness designs incor
-
porate a cloth enclosure into which the tank fits.
The entire tank, valve, and regulator are enclosed in
fabric. This helps to prevent snagging.
When determining the size of the emergency gas
cylinder to use, several factors must be considered.
The divers depth, the length of time the diver may be
less than 225 p.s.i.g. (16 bar) ambient diver pressure.
The helmet cannot properly handle more pressure
without modification. The KMDSI SuperFlow
®
First
Stage SCUBA
regulator (Part #305-161) is an excel
-
lent device for this use. These regulators reduce the
tank pressure to approximately 145 p.s.i.g. (9.9 bar).
Other quality high performance SCUBA regulators
may also be used. Connect the first stage hose with
a set of quick disconnecting locking sleeves to the
emergency valve assembly located on the side block.
The first stage regulator must have at least two low
pressure ports. One port is used for the connector
hose to the emergency valve and the second is used to
Do not dive without a diver worn Emer-
gency Gas System (EGS). If the main gas
supply is lost, you will have nothing to
breathe and may drown.
WARNING
The diving harness must have a provision for attach
-
ing the emergency gas supply and a place to attach
the diver’s umbilical.
Use a good quality first stage for
your emergency gas supply.