초록 ▼

An emergency shutdown system for a water-circulating pump monitors the vacuum on the influent side of a pump. The system includes a vacuum switch connected to the influent side of the pump by a vacuum line. The vacuum switch is connected to a pump shut-off switch which is, in turn, connected to the

An emergency shutdown system for a water-circulating pump monitors the vacuum on the influent side of a pump. The system includes a vacuum switch connected to the influent side of the pump by a vacuum line. The vacuum switch is connected to a pump shut-off switch which is, in turn, connected to the motor of the pump. When one of the influent lines leading to the pump becomes clogged or blocked, the vacuum switch, through the vacuum line, senses the increased suction and delivers an electrical shut-off signal. The pump shut-off switch opens in response to the electrical signal, thereby interrupting line power to the pump. Audible and visual alarms are also electrically connected to the vacuum switch. A main switch, including on, off, start and vacuum bypass positions, is included for manually activating and deactivating the pump motor and for enabling the pump to operate under selected high vacuum situations without deactivating the alarms. A siren key switch is also provided for turning off the audible alarms during pool maintenance. The components of the system are housed in a corrosion-resistant box having a deep base and a cover hinged and locked to the base.

대표청구항 ▼

[ I claim:] [1.] An emergency shutdown system for a pool or spa water-circulating pump comprising a pool or a spa, a power source, a pump motor connected to the power source, a water-circulating pump connected to the motor, the pump having an influent side and an intake and an exhaust, an effluent s

[ I claim:] [1.] An emergency shutdown system for a pool or spa water-circulating pump comprising a pool or a spa, a power source, a pump motor connected to the power source, a water-circulating pump connected to the motor, the pump having an influent side and an intake and an exhaust, an effluent side, the influent side further comprising an influent line connected to the intake of the pump, the effluent side further comprising an effluent line connected to the exhaust of the pump, a vacuum switch connected to the influent side for providing an electrical shut-off in response to increased vacuum on the influent side, a pump switch electrically connected between the power source and the motor, the pump switch being connected to the vacuum switch for receiving the electrical shut-off from the vacuum switch, wherein the pump switch breaks electrical connection between the power source and the motor in response to the receiving of the electrical shut-off from the vacuum switch, an audible alarm and a visual alarm electrically connected to the vacuum switch for energizing the alarms upon increased vacuum on the influent side, the system further comprising an on-off switch, a start switch and a vacuum bypass switch, the start switch electrically overriding the electrical shut-off to the pump switch for electrically connecting the power source to the motor during high vacuum level pump start-up, the bypass switch electrically overriding the electrical shut-off to the pump switch for electrically connecting the power source to the motor during high vacuum use of the water-circulating pump for pool or spa vacuuming.