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An NTC is used as a temperature sensor and in the event of overheating, it reduces the
resistors consumption.
The electronic system detects the actual boiler temperature from the drop in voltage and
adjusts it accordingly.
Resistor values and corresponding temperatures: see table
4.7. Temperature sensor (adjustment)
Temp. (° C) R nom (kΩ) ΔR (+/- %)
20 61.465 8.6
50 17.599 5.9
75 7.214 4.1
80 6.121 3.7
85 5.213 3.4
90 4.459 3.1
100 3.3 2.5
125 1.653 3.9
150 0.893 5.1
4.6. Single microswitch
The gearmotor is activated by a direct current
motor that acts on the smaller double toothed
wheel via a worm screw. The unit is mounted
on the axle of the large toothed wheel and
when a coee is requested, it moves from the
idle position to the dispensing position to then
return to the idle position.
- Idle position: 1
- Dispensing position: 2
2
1