System for controlling pump operation

(19)

(11)

EP 0 863 278 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	03.02.1999 Bulletin 1999/05

(43)	Date of publication A2:
	09.09.1998 Bulletin 1998/37

(21)	Application number: 98500060.3

(22)	Date of filing: 03.03.1998

(51)	International Patent Classification (IPC)⁶: E04H 4/06, E04H 4/12

(84)	Designated Contracting States:
	AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

05.03.1997 ES 9700479
05.02.1998 ES 9800220

(71)	Applicant: PLASTERAL, S.A.
	08213 Polinya (Barcelona) (ES)

(72)	Inventor:
	Vila Corts, Francesc Xavier 08213 Polinya (Barcelona) (ES)

(74)	Representative: Pastells Teixido, Manuel
	c/o PASTELLS & ARAGONES, S.L., Pau Claris, 138 08009 Barcelona 08009 Barcelona (ES)

(54)	System for controlling pump operation

(57) Characterised by, preferably in the area of fluid suction towards the pump (1), the presence of a detector device (3) for the pressure of the fluid in said area, which device, in the event of a variation in pressure or vacuum in this area, transmits a signal to the pump (1) which will cause same to shut down. This device (3) comprises a pressure switch-vacuum switch or a pressure gauge which transmits an electrical signal to a relay operating the pump (1). This system comprehends at least one timer which will program pump operation down time. In addition, the system includes at least one signal microprocessing circuit and one system restarting monitoring subsystem.

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