Your high-rate sand filter is designed to produce clear,sparkling water and
operate for years with a minimum of maintenance when installed,operated
and maintained in accordance with these instructions.
Your filter uses special filter sand to remove dirt particles from pool water.
Filter sand is loaded into the filter tank and functions as the dirt-removing
media.The pool water,which contains suspended dirt particles,is pumped
through your piping system and is automatically directed by the filter
control valve to the top of the filter tank.As the pool water is pumped
through the filter sand,dirt particles are trapped by the sand bed and
filtered out.The cleaned pool water flows from the bottom of the filter
tank,up through the standpipe,and back to the valve on top of the filter
where the clean water is returned to the pool through the piping or hoses.
After a period of time,the accumulated dirt in the filter causes a resistance
to flow,and the flow diminishes.This means it is time to clean(backwash)
your filter.With the control valve in the backwash position,the water flow is
automatically reversed through the filter So that it is directed to the bottom
of the tank,up through the sand flushing the previously trapped dirt and
debris out of the waste line.Once the filter is back washed(cleaned)of
dirt,the control valve is manually resequenced to Rinse and then Filter to
resume normal filtering.
