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Installation and operation manual
2.4.1. Principle function methods
1
2
3
4
5
6
7
12
9
10
8
11
12
Moist compressed air (2) enters the unit through the housing
head (1) and flows downwards through the core pipe of the
membrane element (5) into the housing (4). It then passes
through the nanofilter (6) installed at the bottom outlet of
the core tube where all residual aerosols and particles are
removed from the compressed air. Separated condensate
flows out of the base and is routed through the float drain-off
conduit (7).
The flow direction is reversed in the nanofilter element area
and the damp compressed air flows through the membranes
of the internal membrane element.
A part of the compressed air flow
(9) is diverted downstream of the membrane element and
passed by the sensor continuously in the purge air control.
The sensor measuring results will be evaluated in the purge
air control and the purge air feed to the membrane dryer will
be opened as required. As a result, the purge air decreases to
atmospheric pressure and is considerably dryer as the damp
contained in the compressed air is distributed to a multiple of
the original volume.
The very dry purge air (10) is fed via the purge air duct in
the head and the purge air nozzle (3) on the external side of
the diaphragm (11) and evenly distributed by the arranged
position of the diaphragms. This means that two air flows
move through the membrane element in an opposite
direction with differential damp content(5):
Damp compressed air on the inside and dry purge air on the
outside.
Due to the damp difference, water diffuses from the
compressed air into the purge air. The damp purge air (12) is
then released to the ambient air. The compressed air (8) exits
as dry from the membrane dryer.
DRYPOINT
M eco control
®
EN
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