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KMACS 5 MANUAL
© 2003 KMDSI Document # 041112001
Section 1.0
High Pressure (H.P.) Hose: A flexible hose de-
signed to carry a working pressure of gas (or air) of
more than 300 pounds (20.7 bars) per square inch.
The rated working pressure is usually indicated on
the hose and must not be exceeded. The working
pressure of the high pressure hose on the KMACS
5 is 5000 psi (345 bars).
Whip: A hose complete with fittings at each end for
use in hooking up two pieces of deck equipment for
gas (or air) flow. For instances, the hoses and fittings
used to connect the KMACS 5 to the high pressure
tanks are called “high pressure whips.”
H.P.: High pressure. Usually any pressure over 300
psi. (20.7 bars).
L.P.: Low pressure. Usually any pressure under
300 psi. (20.7 bars).
Pneumofathometer: (pronounced “new-mo-fath-
ometer”) This device measures the diver’s depth.
A small hose, which is part of the diver’s umbilical
runs from the KMACS 5 to the diver. The hose is
open at the diver’s end and attaches with a fitting to
a gauge at the KMACS 5. The gauge is calibrated
in feet and meters of sea water. A valve is attached
between the hose and the gauge so the operator can
use a small amount of breathing air to purge water
from the small hose. When the valve is shut off,
excess air bubbles out of the hose at the diver’s end,
and the air left in the hose will be at a pressure equal
to the pressure of the water column. This is the exact
depth of the diver.
Pneumo: Short for pneumofathometer. Used such
as “pneumo-gauge,” “pneumo -valve”, “pneumo-
hose”, to describe the parts that make up the pneu-
mofathometer subsystem.
Dressed-in: A commercial diver’s suit was origi-
nally called a “dress.” Although the name changed
The following terms may be unfamiliar to the reader.
They are defined as they relate to this manual and
diving. All parts locations are referenced by LETTER
on the diagram, Figure 5, Page 8.
KMACS 5 : Kirby Morgan Air Control System
5. The Trademark name of the device this manual
describes. The KMACS 5 contains all of the
components necessary to properly control and monitor
surface supplied air dives. Included in the KMACS 5
is a two-way voice communicator for talking between
the KMACS 5 operator and the diver(s), or diver-to-
diver. The communicator operates in both the two
wire and four wire mode. The KMACS 5 will supply
plenty of air for two surface supplied divers.
Scuba: Self contained underwater breathing appa-
ratus.
SSAir Diving: Surface Supplied Air Diving. Diving
operation where the diver is supplied breathing air by
way of a hose which is part of the diver’s umbilical
from the surface. Usually the source of the breathing
air is a compressor, but compressed air tanks on the
surface can also be used.
Diver’s Umbilical: Several components run together
from the KMACS 5, (Dive Control System 2A) to the
diver. These components are joined together, usually
by tape, forming the umbilical. The most common
components used in the diver’s umbilical are: (A)
a hose through which the breathing air flows to the
diver; (B) a multiconductor wire for communications
transmission; (C) another (smaller) hose which is used
to show the diver’s depth on the pneumofathometer
(see below); (4) a strong line used as a strength mem-
ber to prevent strain on the other components of the
umbilical. The umbilical should be taped every 10 feet
with colored tape to indicate the length of the hose.
GENERAL INFORMATION
1.1 DEFINITIONS