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1. (WO2010118121) IMPROVED PUMP SYSTEM FOR REMOVING WATER FROM POOL COVERS AND SUMPS

Pub. No.:    WO/2010/118121    International Application No.:    PCT/US2010/030218
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Thu Apr 08 01:59:59 CEST 2010
IPC: E04H 4/00
Applicants: ITT MANUFACTURING ENTERPRISES, INC.
MEZA, Humberto Valenzuela
SCHOPPERLE, Jeffrey Brian
ESTRADA, Jesus
Inventors: MEZA, Humberto Valenzuela
SCHOPPERLE, Jeffrey Brian
ESTRADA, Jesus
Title: IMPROVED PUMP SYSTEM FOR REMOVING WATER FROM POOL COVERS AND SUMPS
Abstract:
A pump system or device is provided for removing water from a pool cover or sump, featuring a controller configured to respond to a signal containing information about the ambient temperature in relation to a pump and to provide a controller signal containing information to control the operation of the pump based at least partly on the ambient temperature.The pumping system or device me be configured to include some combination of the following temperature sensing, including a Thermistor, to change control logic at temperatures below a specific level (e.g. below 35 degrees F), the initiation of impeller cycling at low operating temperatures to avoid ice formation in the impeller cavity and/or hose, but not for level sensing, the use of temperature feedback to turn off pump at low temperatures that may result in damage to the system.