SYNTIA 04 OPERATING LOGICSaeco International Group Rev.01 February 2010 Page / 06Temperature sensorAn NTC is used as a temperature sensor; in the event of overheating this reduces boiler ele-ment power consumption.The electronic system detects the current boiler temperature from the drop in voltage and ad-justs it accordingly.Resistor values: see table4.5. Temperature sensor (adjustment)Temp. (°C) R nom (kΩ) ΔR (+/- %)20 61,465 8,650 17,599 5,975 7,214 4,180 6,121 3,785 5,213 3,490 4,459 3,1100 3,3 2,5125 1,653 3,9150 0,893 5,14.4. Single microswitchThe gear motor is powered by a direct cur-rent motor that engages with the smallerdouble toothed wheel using a worm screw.The unit is mounted on the axle of the largegear wheel and when a coffee is requested,it moves from the home position to the dis-pensing position, and then back to the homeposition again.- Home position: 1- Dispensing position: 22104