ATBECHDEDKESFRGBGR..LILUNLSE......................R0418204EUROPEAN PATENT APPLICATIONA319910522EP90830401.719900912itenen483768919890915IT19910522199121199103201991125 5A 61H 33/00 A 5A 61H 33/02 BdeSelbstreinigende Vorrichtung für HydromassageeinrichtungenenSelf-cleaning device for hydro-massage appliancesfrDispositif autonettoyant pour appareil d'hydromassageMERLONI TERMOSANITARI S.p.A.01133600BE-21200Viale Aristide Merloni, 45I-60044 Fabriano (Ancona)ITSforza, WalterViale Aristide Merloni, 45I-60044 Fabriano (AN)ITCalearo, GiuseppeViale Aristide Merloni, 45I-60044 Fabriano (AN)ITIannone, Carlo Luigiet al00060071Ing. Barzanò & Zanardo Roma S.p.A. Via Piemonte, 26I-00187 RomaITATBECHDEDKESFRGBGRLILUNLSE19910522199121

A device for self-cleaning of a hydromassage appliance wherein the centrifugal hydro-massage pump (2) has its suction port connected to the drainage hole (5) of the bath-tub (1) and its delivery port connected to the drainage conduit (6) of the mains by means of a discharge valve (7), comprising a cleaning water supply conduit (20) connected to the mains and including a valve (21), a device (39) for sensing the water level in the bath-tub (1) and for controlling the hydro-massage pump (2), a partial interception device (19) included in the delivery conduit of the pump, a device (28) for operating said cleaning water inlet valve (21) and a device (28) for operating said discharge valve (7).