Pool Systems Introduction: Difference between revisions

Pool Systems Introduction (view source)

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 When the flow from the gutters is not sufficient (due to water level and/or a lack of waves), additional flow from the drain is required to maintain the surge tank level.  This is typically handled via a modulation valve on the drain inlet to the surge tank, controlled by a level monitoring mechanism (such as a float).  When a modulation valve is not present, flow much be restricted on the drain return and the pool level must be maintained to ensure some amount of gutter return is present.
-This poses some operational challenges:
-* When the pool level is low (and/or the water is still due to a lack of swimmers), insufficient flow may result in an abnormally low surge tank.
-* When the pool level is sufficiently high and a great deal of water is flowing into the gutters due to waves, the surge tank may be "too high".  Some margin in tank depth should be present to allow for a "surge" of water due to a large amount of activity in the pool.  Unfortunately, without the means to automatically reduce drain flow, this cannot be accomplished.
 === Low Water Level ===