Technical Information
37
CVA 4062/CVA 4066/CVA 4068 Coffee Systems
to 7, which cover grinding times of 5.5 to 9.5 seconds (± 1.6 seconds ground quantity
compensation). To prevent the brewing mechanism from overfilling, the maximum
grinding time is limited to 10 seconds.
During the brewing process, the switching cam on the brew unit (Figure 030-2, Item 1)
passes over the microswitch actuator (Figure 030-2, Item 2).
Figure 030-2: Brew Unit Switching Cam, Ground Quantity Compensation Microswitch
The further the switch cam advances, the greater the ground quantity in the brew unit.
Five different settings can be registered:
Position Microswitch Position Switching Process
1 In front of the first cam Off
2 On the first cam Off, On
3 Between the two cams Off, On, Off
4 On the second cam Off, On, Off, On
5 Behind the second cam Off, On, Off, On, Off
Table 030-1: Switch Cam Settings
Three volume areas can be measured for the ground quantity; see Figure 030-3. They
represent the selectable volume areas on the machine; see Figure 030-4.
Figure 030-3: Measurable Volume Areas 1, 2 and 3
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