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The perlite needs to be changed regularly depending on the
bathing load. Typically, the need for change occurs each
10th to 20th day.
The perlite is flushed into the sewer whereafter the filter is
rinsed with clean water. This means, that the amount of water used
for each flush, corresponds to two times of the filter's
volume.
There are no prohibitions against letting out this water and
perlite into public sewerage.
Afterwards, when the filter is about to be filled with perlite,
it can be done in two ways depending on the size of the plant:
For bigger plants, the perlite is delivered in bigbags or a silo
wagon. In these occasions, the perlite is
automatically/electronically balanced. Through water, the perlite
is transported into the filter in a closed system. These systems
are customized for the individual projects.
Watch some images of the customized closed systems under
Automatic perlite loading.
The smaller plants are filled with perlite by a vacuum system,
where the perlite is sucked directly from a bag into the filter
through a hose. (A filter for 200 m³/h flow uses about 20 kg of
perlite, which is about 1,5 bags).
Watch the video vacuum
perlite filling.
Both filling systems are designed in a way that prevents dust
from spreading. Therefore, filtration with Defender filters is
impeccable as far as the working environment is concerned. This is
of course just one of the many benefits that come with the use of
Defender filters.
Try to control a Defender plant
automatically.
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