TM 5-4310-387-14
1-6.
List of Abbreviations.
BHP
Brake Horse Power
DIA
Diameter
FSW
Feet of sea water
NEDU
Naval Experimental Diving Unit
PSI
Pounds per square inch
RPM
Revolutions Per-Minute
SCFM
Standard cubic feet per minute
SCUBA
Self-contained underwater breathing apparatus
TSP
Trisodium phosphate
Section II. EQUIPMENT DESCRIPTION
Paragraph
Page
1-7
Equipment Characteristics, Capabilities and Features .....................................................
1-2
1-8
Location and Description of Major Components................................................................
1-2
1-9
Difference Between Models .............................................................................................
1-3
1-10
Equipment Data ..............................................................................................................
1-3
1-11
Safety, Care and Handling ..............................................................................................
1-5
1-7. Equipment Characteristics, Capabilities, and Features. The air compressor provides purified high pressure,
compressed air for charging self-contained underwater breathing apparatus (SCUBA). The air compressor raises
atmospheric air to a pressure of about 3200 psig. The compressed air is purified by the purification chamber and is then
used to fill the SCUBA diver tank block. The air compressor is a portable, three stage, three cylinder, reciprocating, air
cooled machine which is capable of supplying purified breathing air to fill air bottles. The compressor is driven by an air
cooled, single cylinder, manually started diesel engine. A conventional V-belt drive is used to connect the diesel engine
to the compressor. The maximum brake horsepower of the engine is 6.2 BHP at 3600 RPM. A welded construction
tubular steel frame provides appropriate mounting points for the instruments, purification chamber and all major
components. A resilient mounting system is used to minimize transmission of engine vibration into other components.
The compressor and purification chamber are interconnected.
1-8. Location and Description of Major Components. (figure 1-2)
ENGINE FUEL TANK (1). The engine fuel tank has a capacity of approximately 4 quarts (3.7 liters). This is sufficient
fuel for about 3 1/2 hours of operation at full load.
DIESEL ENGINE (2). Supplies power to drive the air compressor.
AIR COMPRESSOR (3). Takes atmospheric air and compresses it for use in SCUBA tanks.
COMPRESSOR PREFILTER AND INLET HOSE (4). The compressor prefilter and air inlet hose provides a means of
separating the air compressor from the point from which the air being compressed is actually taken. This insures that the
cleanest possible air is being compressed.
COMPRESSOR INTERSTAGE SEPARATOR (5). The compressor interstage separator is located in the compressed air
path downstream of the second to third stage intercooler. The oil and water vapor condensed
1-2
