Philips Saeco Exprelia Series, Service Manual

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EXPRELIA 04 OPERATING LOGIC
Saeco International Group Rev. 00 / June 2010 Page / 11
An NTC is used as a temperature sensor; in the event of overheating this reduces boiler
element power consumption.
The electronic system detects the current boiler temperature from the drop in voltage of the
sensor and adjusts it accordingly.
Heating element values and corresponding temperatures : see table
4.6. Temperature sensor (adjustment)
Temp. (°C) R nom (k Ω ) Δ R (+/- %)
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
4.5. Single microswitch
The gearmotor is powered by a direct current
motor that engages with the smaller double
toothed wheel using a worm screw. The
unit is mounted on the axle of the large
gear wheel and when a coffee is requested,
it moves from the standby position to the
dispensing position, and then back to the
standby position again.
- Standby position: 1
- Dispensing position: 2
2
1
06