TM 5-4310-393-14
Section II. EQUIPMENT DESCRIPTION AND DATA
Paragraph
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1-8
Equipment Characteristics, Capabilities and Features ....................................................................... 1-3
1-9
Equipment Data .............................................................................................................................. 1-4
1-10
Differences Between Models ........................................................................................................... 1-5
1-11
Safety, Care, and Handling............................................................................................................... 1-8
1-8. EQUIPMENT CHARACTERISTICS, CAPABILITIES AND FEATURES.
Equipment characteristics, capabilities and features of the model CAPITANO-PD reciprocating compressor unit consist of
a high pressure compressor driven by a one cylinder diesel engine through a V-belt (Figure 1-1 and 1-2). The unit
includes gauges, hourmeters, fuel tank, purification system and a two part portable frame. The model CAPITANO-PD is
capable of providing 5.0 cubic feet per minute of free air compressed to 3200 psi The unit can be operated in
temperatures ranging from 0 F to 110 F (-17.8 C to 43 C).
a.
Compressor The compressor will deliver 5.0 cfm of breathing air compressed to 3200 psi. The cylinders are
arranged in a "W" configuration The first stage is in the center, with the second stage on the left and the Compressor.
The compressor is a three cylinder, three stage reciprocating piston, air-cooled third stage on the right when facing the
impeller/pulley. Lubrication of the third stage IS provided by a high-pressure oil pump. The first and second stages are
splash lubricated. The cylinders of the compressor, the intercoolers and the aftercoolers are air-cooled. Cooling air Is
drawn across the compressor by an axial fan impeller/pulley driven by the diesel engine An intermediate filter is installed
between the 2nd and 3rd stages It includes a centrifugal plate to remove entrained air and oil and a sintered metal filter
element to remove solid particles.
b.
Diesel Engine. The air-cooled, four-cycle, one cylinder diesel engine develops 6 hp at 3600 rpm. An axial fan
impeller cools the engine The engine is started by use of a hand crank.
c.
Fuel Tank. The fuel tank is mounted above the engine, and is attached to the engine unit frame (Figure 1-1). It
has a 2.38 gal (9 I) capacity with no reserves.
d.
Purification System. The purification system consists of an oil/water separator and a dryer/purifier. The
oil/water separator after the third stage includes a coalescing element for removal of oil and water aerosols. The
dryer/purifier contains a replaceable cartridge for removal of oil and water vapors and conversion of CO to CO2. The
design of the dryer/purifier requires that a cartridge filter be properly installed in order to maintain pressure on the system.
This ensures that only treated air will be available for filling delivery.
e.
Frame. The frame consists of two sections, one section provides mounting for the reciprocating compressor,
while the other provides mounting for the diesel engine. Each section is a welded fabrication of square steel tubing and
angles. The sections are separately portable as four man carries Alignment studs are provided on the compressor frame,
located at the top and bottom corners. These studs fit snugly into the corresponding open receptacles incorporated into
the engine frame For assembly of the two sections, the alignment studs of the compressor frame are inserted into the
engine frame until the frames are tight together. Adjustable draw latches are provided for securing the two sections
together in alignment for operation.
f.
Drive. After the frame sections are secured together, a V-belt is installed over the pulleys of the engine and
compressor and belt guards are bolted on, completing the assembly of the unit and providing drive capability for the
compressor by the diesel engine.
g.
Intercoolers and Aftercoolers. Intercoolers are provided between stages 1 and 2, and between stages 2 and 3
An aftercooler is situated between stage 3 and the final oil/water separator. Compressed air is cooled as it advances
between stages and before final delivery.
1-3
