| 摘要 |
<p>The cartridge change indicator (45) has a float (52), mounted in a reservoir (1), which is displaced upwards along a predetermined course (c), from a low position to a high position under the action of water during filling of the reservoir. The float actuates a drive (48) each time it is displaced. The cartridge change indicator is fitted into the cap (20) of a housing (14). The machine has a cold water reservoir feeding a water heater (10) via a removable water treatment cartridge (18), a cartridge change indicator and a toothed wheel movable part (46) with a drive. An indicating unit (50) gives indication that the cartridge needs changing when the movable part reaches a predetermined position. The float includes a floating part (56), which is near a junction zone (28) between a tank base (16) and the cap of the housing, and an actuating arm (58) which has a lower end fixed to the floating part. The upper end of the arm is connected to the drive for the part. The drive includes a pawl (63) at the upper end of the arm. The movable part has a toothed wheel (60) rotating in the upper part of the cap. The wheel is moved in a series of steps. An anti-return pawl (65) pawl ensures the wheel is driven in only one direction.</p> |
