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11 -Optional
11.1 - Filters
High efficiency filters G4 and F5, height 100 mm
The high efficiency (optional) filters, of the folded type, 100 mm
height, interchangeable with the standard series, can be supplied
in the two filtering classes G4 and F5 based on EN 779 (equivalent
to European norms Eurovent 4/5).
These filters have a filtering power higher than the standard ones
with a higher load loss.
Features of the high efficiency filters
Filtering class G4 F5
Spare part codes
Models 4-5 [no.] 210144 210033
Models 6-7 under [no.] 210149 210034
Models 8-9 under [no.] 210149 210035
Models 6-7 over [no.] 210147 210036
Models 8-9 over [no.] 210148 210036
Height 100 100
High efficiency filters F6, F7 and F9, height 290 mm
The (optional) high efficiency filters, filtering class F6, F7 and F9 according to EN 779 (equivalent to Euro
pean norms Eurovent 4/5), are made of fiber glass filtering materials. The filtering "V"-section plates with
a solid peripheral frame can bear considerable pressure and flow changes.
Features of the high efficiency filters
Filtering class F6 F7 F9
Spare part codes
Models 4-5 [no.] 482740 482741 482742
Models 6-7 [no.] 482743 482744 482745
Models 8-9 [no.] 482746 482747 482748
Height mm 290 290 290
Filter-holding duct
If filters with 290 mm height are required, a metal duct of the same colour (RAL7032) as the unit must be
supplied as filter support to be installed on the machine top.
Models 4 6 8 5 7 9
Length mm 750 750 750 1490 1490 1490
Depth mm 450 600 750 450 600 750
Height mm 450 450 450 450 450 450
Clogged filter alarm
A differential flow indicator, that can be calibrated, may be installed to inform the microprocessor control
about the need to replace the filters when they are clogged.
Additional pressure drop (Pa)
The pressure drop described in the following tables must be subtracted from the heads given in the Useful
available head tables of section Aeraulic features".
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