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After the machine has been switched on, the water selector goes into stand−by according to the following
procedure:
D The water selector motor is triggered.
D This motor drives the water rotation disc with a plastic worm (Fig.9/10).
D The shafts on the rotation disc interrupt the light beam emitted by the light sensor and transmit the pulses
to the controls (Fig.11).
D The start position is determined when the light sensor detects the wide shaft on the rotation disc (Fig.11/12).
Fig. 11 Water rotation disc
Operation of the water selector after a selection button has been pressed:
D The water selector determines its position based on the selected drink.
D Once the position has been determined, the pump motor is triggered.
D The dosed hot water is pumped into the top of the water selector (Fig.13A).
D The water flows through the centre hole in the rotation disc (Fig.13B).
D The water exits through the oblique hole at the bottom (Fig.13C).
D The water then drops into one of the chambers at the bottom of the water selector (Fig.13D).
D The water flows through the connected hoses to the appropriate component.
D The water selector returns to the start position.
Please note:
− The arrow (Fig.13A) shows a small hole on the top of the water selector cover. This is a ventilation hole
that prevents siphonage. A hose that goes to the top of the float tank is connected to the tulle.
− Based on the selected drink, the water selector can rotate during pumping. This is done when water is
needed in several mixing systems.
A
B
Fig. 13 Water selector components
Fig. 12 Water rotation disc with wide shaft
C
D
5
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