AFS 600 - Volumetric Flow Rate Monitoring (Optional)

O r i g i n a l I n s t r u c t i o n M a n u a l f o r A F S A i r P u r i f i c a t i o n D e v i c e s
f o r R e m o v i n g O i l a n d E m u l s i o n M i s t
Produced By:
Version:
Valid from:
U. Burkhardt
1.05
01/11/2016
Neither transfer or reproduction of these documents nor application or disclosure
of their content are permitted without the explicit approval of AFS.
Violations will require compensation for damages.
Page 23 of 26
7.3 Volumetric flow rate monitoring (optional)
On AFS devices that are equipped with differential pressure indicators (MPR), a potential-free contact is
activated as soon as the volumetric flow rate falls below a preset value of the nominal volume flow
(adjustment ex factory). The design of the switching contacts and their connections can vary depending on
the design.
The MPR is only installed in the original equipment for the H13 post filter (see Chapter 7.1.4). As soon
as the MPR signal activates, the H13 post filter is most likely saturated and needs to be replaced.
The electrical connections are to be set by an electrician.
When that happens, maintenance according to Chapter 7 must be performed promptly. Continued
system operation is not permitted.
The maintenance work and cycles described in Chapter 7 are absolutely mandatory. Extending the
maintenance intervals until the MPR is activated is not permitted.
The MPR is to be set to 100 Pa (preset ex factory).
The MPR's technical details as well as information on connecting it and processing its signals can be
found in the accompanying instruction manual.
Figure 16: MPR ex factory adjustment and installation point
7.3.1 MPR Functionality
There is a defined drop in pressure in the Longlife separator (see Chapter 7.1.3) when air flows through. The
Longlife separator does not get dirty in normal operation. Consequently, the loss of pressure via the Longlife
separator remains constant in all the AFS air purification device's areas of operation. The flow speed and
therefore the volumetric flow rate within the device are directly indicated by the differential pressure
determined by the differential pressure measurements before and after the Longlife separator.
The MPR will only operate error-free if the Longlife separator is not dirty or damaged. If the Longlife
separator is removed, the MPR will not work.