Intermac Primus 184 - Cleaning and replacing the dryer filter

11 Routine and special maintenance
BIESSE S.p.A. © - p714k0003.fm251111
79
Description
The dynamic dryer filter is made up of the
following parts:
 an upper part (A), with the threaded holes
(air inlet and outlet) for connection to the
pneumatic system
 a cup (B) with a condensation drainage
device
 a 50-micron filtering cartridge (C)
Operating principle
Unlike a traditional filter, the dynamic dryer has 3
distinct operating phases in which the fluid is
"processed" to eliminate the liquid and solid
particles.
 Phase 1: expansion
In this phase, the fluid is expanded. This
causes a reduction in the temperature and
the consequential condensing of the water
vapour particles.
 Phase 2: centrifugation
In this phase, the fluid makes a circular movement inside the cup. As it follows its obligatory
path, the fluid is also forced to accelerate. The centrifugal force generated tends to carry the
water particles outwards because they are heavier, so they deposit on the inner walls of the
cup and then on the bottom.
 Phase 3: filtering
A 50-micron filtering cartridge holds back all the solid particles above 50 microns.
Cleaning and replacing the dryer filter
To clean and replace the filter, proceed as follows:
 Make sure there is no pressure in the system; the pressure indicated on the pressure gauge
must be 0 bar.
 Remove the filter cup A (to do this, lower the lever B).
 Turn the cup 45° clockwise and then pull it downwards to remove it.
 To remove the filtering element D, turn the ring nut C clockwise.
 Clean the cartridge with water, soap and compressed air or, if necessary, replace it.
 Clean the cup, removing any deposits.
 To reassemble, follow the above steps in the reverse order.
B
C
A