Single Microswitch; Temperature Sensor - Philips Saeco GranBaristo Service Manual

GRAN BARISTO
4.3.

Single microswitch

4.4. Temperature sensor (adjustment)
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.
2
1
Temp. (°C) R nom (kΩ)
20
50
75
80
85
90
100
125
150
The gear motor 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 posi-
tion, and then back to the standby posi-
tion again.
- Standby position: 1
- Dispensing position: 2
ΔR (+/- %)
61.465
17.599
7.214
6.121
5.213
4.459
3.3
1.653
0.893
04 OPERATING LOGIC
8.6
5.9
4.1
3.7
3.4
3.1
2.5
3.9
5.1
4/7