Saeco RI9722/11, Service Manual

Page: 46 / 224

4. FUNCTION/TIMING INCANTO S-CLASS
Page 6/9 REV.1 FEB.2005 Saeco International Group
Measured values (KTY)
Temperature Resistance (
ȍ
) Resistance trend (
ȍ
)
0 1629 0
15 1845 216
20 1922 77
40 2246 324
90 3168 922
100 3366 198
130 3979 613
140 4188 209
At room temperature the resistance is approx. 1.9K
ȍ .
4.7. Grinder
The grinder is fitted with grinding discs. The grinding discs are made of ceramics.
ATTENTION: Adjust the grinding level only when the grinder is in operation!
EXCEPTION: Grinder is empty.
The grinder operates with a direct current motor and the grinding disc rotation speed is determined by a
gearmotor. The grinder motor operates with a voltage of 230V direct current.
Grinder obstructed: Gravel protection is electronically controlled. If the grinder is obstructed, the power
input to the grinder motor increases and the electronic system switches the grinder off.
If the electronic system does not receive any pulses from the grinder Hall sensor, the grinder blocked
signal will be generated.
Coffee beans low: The lack of coffee beans is detected via the power input. If there are no coffee beans in
the grinder, the motor runs without a load and, therefore, consumes less power. This is detected by the
control unit and the coffee beans low signal is generated.
4.8. Dosing
Gravel protection is electronically controlled. Two magnets positioned opposite to each other are fitted on
the grinder disc gear wheel. The Hall sensor monitors the number of rotations of the grinding discs and,
therefore, also the dose quantity.
Incanto rondo control: Via a potentiometer in the electronic system
Incanto classic control: Via service programme / test mode
Incanto de luxe control: Via aroma selection function (user menu)
Incanto sirius control: Via aroma selection function (user menu)