| 摘要 |
<p>The control unit comprises a hollow external casing (21), an internal bolt (23) rotatable in an internal cavity (22) of said external casing (21) to close and alternately to place in communication with a plurality of different transversal outlets (27, 28) a water inlet (24) obtained axially in said bolt (23), a reversible electric motor (36) for the rotation of said bolt (23), a cam element (37) rotatable together with said bolt (23), and a plurality of electric limit switches (38, 39) co-operating with said cam element (37). An electronic control circuit (43) with programmable times is provided to operate said electric motor (36) in one direction or the other and up to the engagement of said cam element (37) with one predetermined of said limit switches (38, 39) for the consequent displacement of the bolt (23) in a position of closing said axial inlet (24) or of placing it in communication with one of said transversal outlets (27, 28). Electric batteries (55) supply power to said electronic circuit (43) and to said electric motor (36). A control keyboard (44) housed in an accessible space of said external casing (21) is connected electrically to said electronic control circuit (43) to allow the programming of the times and methods of operation of said motor (36). <IMAGE></p> |
