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-- 5.3) MOTOR --
The unit is equipped with a Diesel motor, the features of which are described in
paragraph 2 (
Technical data)
.
Consult the use and maintenance instructions and the manual supplied by the
manufacturing company and enclosed with this documentation.
-- 5.4) COMPRESSION UNIT
--
It is completely manufactured in the ROTAIR factory and consists of a central
body (cylinder) inside which are fitted two screw rotors with asymmetric section, a male
one with 5 lobes and female one with 6 lobes.
The cylinder is closed at the ends by two head sections which contain the
bearings which bear the radial and axial loads created by the air compression.
A series of channels, inside the cylinder and heads, undertake to deliver the oil
to the various components. The distribution of the lubricant , serves to lubricate the
bearings and to maintain a coating of oil between the rotors and the bearings themselves
as well as the internal cylinder walls, thereby promoting compression resistance. Another
important function of the oil injected between the rotors is that of absorbing the heat
generated by the air compression.
The compressed air supplied by this compressor is free of any pulsations and
compression comes about axially.
A "regulator" unit is mounted on the compression unit, the purpose of which is
to regulate the quantity of air taken in according to the amount of air consumed. A double-
stage filter mounted on the top of this unit guarantees maximum purity of the suctioned
air.
-- 5.5) OIL SEPARATOR TANK --
Consists of a pressurized container, and due to its construction features it is
exempt from the annual I.S.P.E.L. inspection and is supplied with a conformity certificate
issued by the manufacturer. The identification and inspection details are impressed on a
plate which is welded to the machine.
The lid features the following elements: safety valve for overpressure, a thermal
switch which intervenes if the temperature inside the tank exceeds 100
C and valves
which regulate the maximum and minimum pressure of the machine.
-- 5.6) BELL AND FLEXIBLE COUPLING
--
The engine and the compressor are interconnected by a bell which
guarantees concentricity between the engine flywheel and the compressor shaft.
A large-size block joint with rubber pieces interspaced transmits power in a
smooth and silent way without splitting.
The engine-compressor thus assembled is clamped to the frame with four
flexible supports (silent-blocks) which completely absorb the vibrations it generates. A fan
is splined to the engine shaft on the opposite side to the flywheel which generates large
air displacement which cools the machine fluids and elements.
Summary of Contents for MDVN 71 AP
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