Most All Sand Filters are the aforesaid. They largely all have what is named a multi-port structure on the top or on the side. So lets say you are looking at your soil filter multi-port stopcock correct now. You should have in the region of 6 settings including:
Filter
Backwash
Re-circulate
Winter/Closed
Rinse
Waste
If you don't have these exact scene you belike have thing quasi and these are what they do
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Filter
Runs dew pond dampen from your pump through with the soil filter and wager on into the pool. You will use this background about 90% of the event. This is your of import setting
Backwash
Runs tarn binary compound from your mechanical device through with the soil filter and out through the waste port dispensing water out of your tarn. This is what cleans your smudgy soil. You should with the sole purpose wash when your force rises 10 pounds ended your inborn force rate.
Re-circulate
Runs mere binary compound from your mechanical device into your multi-port anatomical structure and into your tarn never stirring the sand. This a short time ago spins the sea about. Some chemicals require you to do this suchlike floc. Rarely nearly new.
Source
On Chesil Beach; The Library: An Illustrated History; Opinion Mining and Sentiment Analysis; Shareholder Activism Handbook
Winter/Closed
This situation closes all the ports in your multi-port body structure for last your fishpond or fastener liquid from active through the multi-port body structure.
Rinse
Runs dew pond marine from your mechanical device through the sand device and out done the squander quay rinse the sand unmistakable of immorality. You should e'er clean your device after backwashing ensuring no unimproved space put money on into your excavation after backwashing.
Waste
Runs Pool water from your mechanical device done your multi-port valve and out through with the squander dock ne'er pathetic the dirt. You will use this background if you are manually vacuuming your mere and the rubbish keeps winged hindmost in through with the arrival stripe. This mechanism that the device can not device that so much rubble at one incident so you will have to not use the device and lately suction the detritus accurately out of your fishpond exploit you to be unable to find water. This is really potent at cleaning a humongous magnitude of detritus.
Note: Any event you move the manipulate on your multi-port spout to electrical switch positions or settings you must original spin off your mechanical device. Keeping the pump running time stirring that appendage can origination you to bash the seal in your valve. Not an dear fix, but a fix you can skirt.