Table of Contents
Advertisement
3.4
Boiling point determination programme
Hot water may come out of the filter pan while running this programme.
The machine automatically only runs the boiling point determination programme when using the
machine for the first time. The boiling point of the water is now determined. This is necessary
because the boiling point depends on the local atmospheric pressure. The boiling point at sea
level will be about 100°C, whereas the boiling will drop to about 97°C at an altitude of 2000m.
After having switched on the mains voltage, the water in the boiler will first be heated to about
75°C at full power (Fig.6, A).
Then the water in the boiler will be heated with reduced power to 85°C. During this period, the
software will measure how quickly the water is heated.
Based on this measurement, the machine will heat up with a certain power until the temperature
sensor on the outside of the boiler has not detected a temperature change for some minutes
(Fig.6, B). After this period, the boiling point has been reached and the measured value is saved in
the software.
The final operating temperature in the boiler will be 3°C below this point. Because the boiling
point of water depends on the atmospheric pressure, it is necessary to run this programme at the
location where the machine will be used. During the boiling programme, the display shows the
current temperature with below this a flashing thermometer and a changing, increasing volume.
After a certain period (dependent on the power the machine has been connected to), the
thermometer stops flashing to indicate that the boiling point has been determined.
Note:
► While running the boiling point determination programme, it is very important that no
panels have been removed from the machine.
The fact is that this may influence the measurement and so cause a deviation in the
temperature during normal use.
110
100
90
80
70
60
50
40
30
20
10
0
Fig.6 Boiling point determination programme
A
B
t
5
Advertisement
Table of Contents
