Defender Innovation in Automatic Filtration System with continuous regeneration of the filter bed The Defender filter is acknowledged to be the most innovative filtration system currently available. It is respectful of nature while at the same time ensuring the perfect quality of swimming pool water. The growing success enjoyed by the Defender in numerous countries worldwide demonstrates that it is an excellent solution in terms of both economics and environmental sustainability. Swimming Pool Filtration A t
Transcript
DefenderInnovation in
Automatic Filtration System with continuous regeneration of the fi lter bed
The Defender fi lter is acknowledged to be the most innovative fi ltration system currently available.
It is respectful of nature while at the same time ensuring the perfect quality of swimming pool
water.
The growing success enjoyed by the Defender in numerous countries worldwide demonstrates
that it is an excellent solution in terms of both economics and environmental sustainability.
Swimming Pool Filtration
A t
The fi lter bodyThe Defender consists of a steel outer structure and a fi lter core made up of a system of small, fl exible stainless steel
spiral tubes wrapped in a dense polyester mesh.
The Defender fi lter uses perlite as the fi lter medium. Perlite is a non-toxic fossil powder that can fi lter particles as fi ne as
one micrometre, and as a consequence decreases the quantity of chemical products used while considerably increa-
sing water quality and transparency.
Adding the fi lter mediumThe layer of perlite adhres to the fi lter candle system with a controlled thickness.
The operation is similar to that of diatom fi ltering, but without the problems as-
sociated with the disposal of diatom powder. The perlite enters the fi lter through
an automated blower system that is integrated into the fi lter itself. This device
allows the quick feed of dry perlite into the Defender, eliminating the need for the
additives required when using wet perlite.
Perlite transfer system
All of the Defender fi lters are internally insulated with a protective anti-corrosion layer, specifi cally designed for surfaces
in contact with chemically-treated water. The greatest advantage of the Defender fi lter is its pneumatic system, which
allows the effective regeneration of the fi lter medium. This cycle, called Bump, automatically regenerates the perlite
every day in order to optimise the fi lter’s capacity.
BumpFiltration Reconstitution of the fi lter bed
AutomationThe control panel of the Defender manages the fi ltration cycles, backwash, re-
generation of fi lter media and perlite loading. This system can be interfaced with
control units for the adjustment of pool water chemical levels, heat exchangers,
and variable frequency pumps.
Control Panel
Maintenance of the Defender FilterThe Defender includes a preset cleaning programme that is based on the use of
specifi cally prepared and measured chemical products. In recent years the De-
fender has been installed at hundreds of sites all over the world without need to
access the inside of the fi lter. If such access should become necessary, however,
the Defender includes an automatic system for lifting the fi lter cover.
Filter head lifting system
The Advantages of the DefenderThe advantages of the Defender system are numerous:
Space-saving design: the Defender is a compact fi lter with overall dimensions smaller by around 70% compared to
traditional sand fi lters
Water saving: the Defender fi lter allows backwash water savings of up to 90%
Time saving: the frequency of the Defender’s backwashing operations favours considerable time savings
Savings on energy and chemicals: the radical savings on backwash water directly translates into savings on chemical
products and energy supply
Removal of particles less than 1 micrometre in size
Maximum transparency of water
Environmental SustainabilityThe Defender fi lter also offers an enormous advantage in terms of environmental sustainability. The effi cient regenera-
tion of perlite means that is can be used for weeks, or even months, before needing to change the fi lter medium. This
translates into a highly signifi cant savings on water, chemical treatment products and electricity for swimming pool
water heating.
Coeur d’Alene KROK Center, Idaho. Defender Filtration System.
Via Solferino, 27 - 46043 Castiglione d/Stiviere (MN), Italy - P. O. Box 7
