Backwashing Your Sand Filter - EcoSmarte Pool System Manual

Sand filters must plug and have pressure
rise on their gauge to remove small particles from
the pool. A functional pressure gauge is neces-
sary to successfully operate the pool. It is highly
recommended that pools with slide valves should
upgrade to a multiport valve. Multiport valves give
you full operation of a sand filter. A slide valve has
Backwashing your
sand filter
Backwashing the pool should occur after 6
lb pressure rise on the gauge and prior to a 10 lb
rise over starting pressure. The starting pressure
must be recorded after a proper backwash. The
gauge can be marked with a waterproof marker so
any pool professional or family member will know
the operating status of your filter.
The proper method to backwash the filter is
shown below. YOU MUST TURN THE PUMP OFF
between each movement on the multiport valve, or
you will damage the "spider" O-ring inside the valve.
The multiport valve should easily and distinctly lock
into position.
When finished with the second backwash/
rinse cycle, the pump should be turned off and the
TWO COMPLETE CYCLES: FULLY PURGE THE MEDIA
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only two options- filter and backwash. A slide valve
does not include the rinse feature. Without a rinse
feature, it is impossible to properly backwash a
sand filter to its maximum cleanliness. The rinse
feature on the multiport valve is an intricate part of
removing the particulate that has been collected in
the filter, cleaning your pool properly.
valve returned to the "filter" position. The pool
should be operating at your starting pressure. The
"recirculate" and "waste" settings are covered un-
der problem solving and vacuum chapters of this
book.
Backwashing too frequently will result in
more chemical use and less water clarity with a
sand filter. Any sand filtered pool that has gone 6-8
weeks without a pressure rise should backwash
the pool regardless of pool clarity.
1. Turn off pool pump
2. Set multiport valve to "backwash"
3. Turn on pool pump for 2 1/2 minutes
4. Turn off pool pump
5. Set multiport valve to "rinse." Rinse to
clear in-site glass (15 to 45 seconds)
6. Repeat this process
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