lb.00056.30 Pag. 12 26/05/10
4) Enabling the dispensing of milk based doses for keys N° 4 (Cappuccino), N° 5 (Caffe latte) and N° 6 (Latte macchiato).
This function enables the dispensing of milk based doses for keys N° 4, N° 5 and N° 6.
The procedure is carried out in the following way:
- Cut off the power supply to the machine;
- power up the machine while keeping key N° 3 press ed until light D on key N° 6 of the same keypad com es on;
- cut off the power supply to the machine;
- power up the machine again. At this point it is ready for use.
5) Disabling the dispensing of milk based doses for keys N° 4 (Cappuccino), N° 5 (Caffe latte) and N° 6 (Latte macchiato).
This function disables the dispensing of milk based doses for keys N° 4, N° 5 and N° 6, thus allowing only coffee based doses to be
dispensed.
The procedure is carried out in the following way:
- Cut off the power supply to the machine;
- power up the machine while keeping key N° 4 pres sed until the light D on key N° 6 of the same keypa d comes on;
- cut off the power supply to the machine;
- power up the machine again. At this point it is ready for use.
6) Calibrating expansion valve of the coffee water exchanger.
To calibrate the working pressure (12 Bars), rotate the rubber sitting holder connection of the expansion valve “15” clockwise to increase
it, and anti-clockwise to decrease it.( see hydraulic diagram )
The working pressure is displayed on pressure gauge “7” , when the machine has a steady stand-by temperature.
7) Calibrating the steam boiler pressure switch
To calibrate the working pressure of the steam boiler (0.9-1.1 Bars), rotate the “PR” pressure switch screw (see hydraulic diagram)
clockwise to increase it, and anti-clockwise to decrease it.
The working pressure of the steam boiler is displayed on pressure gauge “6”, when the machine has a steady temperature.
8) Calibrating the coffee dispensing pressure (pump pressure).
To calibrate the coffee dispensing pressure (8-9 Bars), rotate the “MP” pumping body screw (see hydraulic diagram) clockwise to
increase it, and anti-clockwise to decrease it.
The adjusting screw is reached through the special hole behind the coffee grounds bin.
The coffee dispensing pressure is displayed on pressure gauge “7” ; when the machine is in the coffee dispensing phase.
9) Cold – hot water mix flow adjustment for coffee group .
The cold water mix solenoid valve (Y2.9) adjustment screw must be adjusted as follows to change the amount of cold water that is
mixed with the hot for making coffee :
- turn the adjustment screw on the solenoid valve in a clockwise direction to reduce the amount of cold water.
- turn the adjustment screw on the solenoid valve in an anticlockwise direction to increase the amount of cold water.
See (NT-00448).
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