Filtration Group MFS-E900 Traduction Du Mode D'emploi Original page 36

11.1 Automatic differential pressure / time-
controlled mode
 Automatic mode is activated as standard.
 A cleaning cycle is started according to the p or a
selectable interval time.
 Set the switching point for the differential pressure
indicator / switch or analogue sensors on the Siemens
LOGO!.
 The motor and the backflush valve are controlled by
means of the p contact.
 Adapt the parameter settings to the actual operating
conditions (refer to section 13.1).
 The drain valve opens and closes according to the
programmed time.
 The drain valve is interlocked for cleaning.

Refer to section 18 for a list of parameters
and their default settings.
Fig. 8: Signal characteristic
Page 8
Translation of the original instructions MFS-E900, Filtration Group GmbH, 26.09.19, Mat. No. 72370026, Version 05
12 Parameters for automatic cleaning
CAUTION!
If a cleaning cycle is interrupted:
 Concentrate is drained in an uncontrolled way.
 Set parameter B37 correctly.
 Reduce parameter B37 to restrict the flow rate through
the drain or backflush valve.

The parameter settings should always be
adapted to the application.
The end of a cleaning cycle is controlled by the Δp signal.
If the filter is still not clean at the end of a cleaning cycle, the
Δp signal remains present to indicate severe fouling.
 The drain or backflush valve remains open.
 Concentrate is drained in an uncontrolled way.
 The alarm time set with parameter B37 stops the
cleaning cycle and closes the valves.
To change the cleaning threshold with analogue
sensors
 Press ESC+
or
 The differential pressure threshold is changed.
.