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Posted by Don Phillipson on January 12, 2007, 2:12 pm
> Most All Sand Filters are the same. They mostly all have what is called
> a multi-port valve on the top or on the side. So lets say you are
> looking at your sand filter multi-port valve right now. You should have
> about 6 settings including:
> . . .
> Backwash
> Runs pool water from your pump through the sand filter and out through
> the waste port dispensing water out of your pool. This is what cleans
> your dirty sand. You should only backwash when your pressure rises 10
> pounds over your normal pressure rate.
Vendors hereabouts recommend backwashing about
once a week. Usually the waste water runs visibly
clean after 30 sec. to 2 min. of backwashing. Small
pumps typically run at about 15 p.s.i. i.e. will never
reach 25 p.s.i.
> Rinse
> Runs pool water from your pump through the sand filter and out through
> the waste port rinsing the sand clear of dirt. You should always rinse
> your filter after backwashing ensuring no dirt flies back into your
> pool after backwashing.
As described here, this would be exactly the same as
backwashing. Filter manuals may explain the difference
between Backwash and Rinse modes, where a difference exists.
--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)
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