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(11) | EP 1 978 143 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Washing appliance |
| (57) A washing appliance that uses a washing liquid comprises: a washing tank (2) suitable
for containing the washing liquid used for the washing treatment; a pipe (3) for draining
out the washing liquid and in fluid communication with the washing tank (2); a drainage
pump (6) operatively connected to the drainage pipe (3); means (4) for detecting a
free surface level of a column of the washing liquid, said column being located immediately
upstream of the drainage pump (6) relative to the direction in which the washing liquid
flows out of the washing tank (2) during its drainage. The washing appliance 1 comprises
means (5), operatively connected to the detecting means (4), for controlling the drainage
pump (6), said means (4) detecting a first condition where the water level is less
than or equal to a first predetermined level. At least during a predetermined part
of the washing cycle, if the drainage pump (6) is in operation, the control means
(5) inhibit the operation of the drainage pump (6) upon occurrence of the first condition
sensed by the detecting means (4).
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