Pool Main Pump Motor: Difference between revisions
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Matt Parnell (talk | contribs) |
Matt Parnell (talk | contribs) |
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** Violates best practices and/or health department requirements if too low (minimum number of complete water turn-over cycles per 24 hour period). | ** Violates best practices and/or health department requirements if too low (minimum number of complete water turn-over cycles per 24 hour period). | ||
** Causes channeling in the sand filters due if too high. This can lead to incomplete filtration (cloudy water) and requires opening and manually stirring tank sand to resolve. | ** Causes channeling in the sand filters due if too high. This can lead to incomplete filtration (cloudy water) and requires opening and manually stirring tank sand to resolve. | ||
* Utility incentives will pay for a significant portion of the material cost. As of 2022, DTE will reimburse up to $900 for a 15 HP VFD. | * Utility incentives will pay for a significant portion of the material cost. As of 2022, DTE will reimburse up to $900 for a 15 HP VFD. | ||
* Enhanced safety with the addition of two emergency stop buttons, including one at the gallery level (near the pump). | * Enhanced safety with the addition of two emergency stop buttons, including one at the gallery level (near the pump). | ||
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* Added complexity. | * Added complexity. | ||
* Added failure points - including the addition of sensitive electronics in a harsh environment. | * Added failure points - including the addition of sensitive electronics in a harsh environment. | ||
An improvement in energy efficiency may be possible. However, it is not confirmed. Restricting the output flow on a centrifugal pump reduces the amount of work (pushing a lower volume weight of water). Data in the appendix below confirms this to a point. | |||
=== Requirements === | === Requirements === | ||