Installation, Operation and Maintenance Manual
DCE 2000 Series Dust Collectors
16
InstallatIon
Interlocks
Discharge equipment such as belt feeders, rotary valve or screw conveyor should
be separately controlled but interlocked with the filter controller (see Fig. 9).
The design of the electrical circuitry controlling equipment associated with the
DCE 2000 Series dust collector should be such that breakdown of any one of
the associated pieces of equipment does not cause a complete blockage of the
unit. For example, should the motor of the rotary valve fitted to the unit cease
to function, the unit housing will gradually fill with dust until completely choked.
Failure of the compressor could also cause a similar blockage.
It is therefore important that the starters of all ancillary equipment be interlocked
to ensure:
1 Correct starting sequence;
2 Operation of a warning system, or alternatively stoppage of the entire
installation in the event of a failure of any of the auxiliary motors;
3 Correct stopping sequence.
Such interlocks are illustrated in Figure 9 which also allows for the compressor
etc. to operate without airflow through the unit, to facilitate clearance of the filter
in the event of blockage due to failure of non-electrical equipment.
It may be necessary to provide a facility to shut down the equipment in
the event of an explosion (where collectors are fitted with explosion relief
panels). The signal should be taken from the explosion relief detection
device.
Figure 9 schematic diagram showing typical interlock system for a DCe 2000 dust collector installation
*
For fans powered by 11 kW motors or above, collectors are connected for star delta starting as standard
l1
l2
l3
n
start
N/O aux.
contact
o/l
stop
rotary valve(s)
Conveyor
Compressor Controller
fan*
Содержание DCE 2000 Series
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