Technical Principles
1ª review – UK 12 – 2020
21
5.
CONTROL POINTS
Heatting element
Meassured in the control board in the conector
jp11
Between pins 1 and 3, will be 220 Vca when heatting element is working. (if 10A fuse is
fine)
Erogation pump
Meassured in the control board in the conector
jp10
Between pins 1 and 7 will be 220 Vca when ulka pump is working.
Erogation group motor
Meassured in the control board in the conector
jp10
Between pins 2 and 7 will be 220 Vca when the group is working.
Coffee doser
Meassured in the control board in the conector
jp10
Between pins 3 and 7 will be 220 Vca when doser is activated.
Grinder
Meassured in the control board in the conector
jp10
Between pins 4 and 7 will be 220 Vca when grinder is working.
Transformer
Meassured in the control board in the conector
JP12
Pins 1 and 2 = 220 Vca (black looms).
Pins 4 and 5 = 24 Vca (blue looms).
Pressure electrovalve
Meassured in the control board in the conector
jp8
Between pins 1 and 4 will be 25 Vcc when la electrovalve is activated.
Volumetric counter
Meassured in the control board in the conector
jp1
.
Pin 1 corresponds to +, pin 4 is ground and pin 12 is signal.
When volumetric is turning. The multimeter will show 2,5 Vcc meassuriing between pins
12 and 4.