Emergency Gas System (Egs) - Kirby Morgan 77 Operation And Maintenance Manual

Kirby Morgan 77
®
WARNING
The one way valve must be tested daily,
prior to commencement of diving opera-
tions. Failure of the one way valve could
cause serious injury or death.
You can also test the one way valve by attempting
to suck air through the valve. The emergency valve
must be open for this test to work properly. If you
are able to suck any air through the valve it is not
working properly.
WARNING
Never dive if the one way valve is not op-
erating properly. If the hose or breathing
gas/air fitting breaks near the surface a
serious injury could result to the diver's
lungs and/or eyes. In extreme cases this
could be fatal. The one way valve must be
tested daily prior to the commencement
of diving operations.
38
2) With the emergency hose pressurized, turn on the
emergency valve knob. If any gas escapes out the end
of the adapter, the one way valve is faulty and must
be rebuilt or replaced. A one way valve repair kit is
available to rebuild these valves (Part # 525-330).

3.7 Emergency Gas System (EGS)

If the diver's main gas supply fails, the diver must have
another source of gas that will enable him to return to
WARNING
Do not dive without a diver worn Emer-
gency Gas System. If the main gas supply
is lost, you will have nothing to breathe
and may drown.
Diver donning a complete bail-out system.
the dive station or to a point where a normal gas supply
can be reestablished. For this reason, an emergency
gas supply (bailout) cylinder must be used on all dives.
The bailout cylinder is normally worn on the back
using a combination backpack and lifting harness.
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
© ⅯⅯⅩIⅡ Kirby Morgan Dive Systems, Inc. All rights reserved. Document # 130318003