18 DUSTOMAT 21-67 H 09302-52-00
9. Monitoring the minimum airflow volume
With the dust extractor, the processing machines can be dedusted with exhaust
ports of various diameters. In so doing, check that the exhausted airflow volume
does not drop below the lower limit. The minimum airflow volume depends on the
size of the intake connection piece of the machine creating the dust. The dust
extractor’s monitoring equipment (pressure switch with connected acoustic signal)
must be adjusted to this minimum airflow volume.
This device measures the vacuum in the filter. With increased dust soiling of the
filter, the flow resistance increases along with the vacuum behind the filter. If the
value set on the vacuum monitor is reached, an acoustic signal sounds. This
means that the filter must be cleaned.
Depending on the device’s equipment, do this manually after switching off, or
automatically during operation (DUSTOMAT -27,-47,-67).
If the pressure controller’s preset value is too weak for operational use
conditions (long extraction distances and small tube diameters), it means that a
short time after cleaning, the acoustic signal will be triggered again. This can be
adjusted upon consultation with ESTA
maintenance services.
The pressure switch must be adjusted only by an
appropriately trained person. The adjustment is
made with a size 6 Allen wrench. After the
pressure switch has been set, the device is ready
for operation again.
preset pressure controller
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