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| | <b><i>This page is presently being overhauled, as much of the relevant information has been moved onto other sub-pages.</i></b> |
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| Systems for pumping, filtering and chemical treatment ensure that pool water is sanitary, clear and warm. | | Systems for pumping, filtering and chemical treatment ensure that pool water is sanitary, clear and warm. |
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| == Surge Tank == | | == Surge Tank == |
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| The surge tank fundamentally supports the gutter system, which captures surface water and absorbs of waves formed within the pool. The water on the surface has the potential to be the dirtiest in the pool. Debris (such as leaves, pollen), algae spores and oils (from skin, sun screen lotion) collect on the surface. The sun's UV rays break down disinfectant (chlorine) most at the surface. It is important that this water be collected with priority.
| | Details moved to another page. |
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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.
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| === Low Water Level ===
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| When the surge tank is too low, this is typically due to one of more of the following reasons:
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| * The pool water level is too low (when a drain return modulating valve is not present). Fill the pool.
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| * The drain return modulating valve is malfunctioning, if present. Service the valve.
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| * The main pump flow rate is too high. Reduce the outlet flow rate (only after ensuring that other conditions are not present).
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| When a drain return modulating valve is not present, it is important that the drain return is restricted (the valve is partially closed). Otherwise, flow from the drain will potentially prevent adequate flow from the gutter return. In an ideal case, the surge tank should always have a modulating valve on the drain return.
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| ==== Automatic Fill ====
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| ==== Manual Fill ====
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| === Known Deficiencies ===
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| === High Water Level ===
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| Typically, high water in the surge tank is not of concern (unless it has nearly reached or exceeded the overflow point, of course). High water is usually the result of:
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| * A nominal or slightly elevated pool water level in conjunction with a large amount of pool activity (spilling water into the gutters).
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| * Limited flow into the filter system due to a plugged strainer basket or blockage elsewhere.
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| * Excess water in the pool due to over-filling or a significant rain event (in this case, some water may be removed via backwash at the operator's discretion).
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| All three scenarios, of course, assume the main pump is operating. The surge tank will rise to a relatively high level shortly after the main pump is disabled (it will match the pool level).
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| == Main Pump == | | == Main Pump == |