THE POOL SYSTEM
The swimming pool system filters and helps maintain the clarity of the pool water. As the water
is circulated by a properly designed system the water evenly distributes the chemicals that are
added to the pool to control purity and chemical balance.
The filtration system re-circulates and filters the water in the pool. It enables the initial water
supply to be used over and over again, adding just the little water necessary to backwash the
filter and compensate for evaporation and splash-out.
The filtration system is composed of four elements: the filter, a
pump and motor, an automatic surface skimmer, and
recirculating piping.
The
PUMP
circulates the pool water through the filtration
system; mixing and sanitizing chemicals.
The water passes through the
FILTER
which removes unwanted
debris. The filter used for your pool is a High-rate sand filter. This
filter is a pressure vessel moulded from a chemical resistant
thermoplastic. It has a system of drains and water distribution that
maintains a non-turbulent flow through the filtering media. The
media consists of a special grade of sand which if properly maintained
will last for several years.
To clean the filter sand the filter must be backwashed ie, the flow
through the filter must be reversed. For your filter this is done
conveniently with the aid of the multiport valve mounted on the top of
the filter. About 80 gallons to 400 gallons of water is used during the
backwash.
The
PLUMBING SYSTEM
is designed to circulate all the water through the filtration system.
Normally, water is drawn from the pool through the main drain and the surface skimmer; passes
through the suction lines to the pump and filter and then returns to the pool via return lines and
return inlet fittings.
