User manual for NERO TOUCH, NERO TOUCH INSTANT
page 19
Version 1.1 / December 2017
ТМ
4.3.2 Air fine tuning valve adjustment
Milk foam adjustment
To adjust the milk foam on the vending machine do the following:
-
Make sure that the milk container is installed in the refrigerator near the vending machine.
-
Make sure that the milk is fresh and unspoiled.
-
Make sure that the silicone milk supply tube at the vending machine inlet is not pinched.
-
Make sure that the vending machine milk system was washed beforehand, and all its parts includ-
ing the cappuccinatore are clean. Inspect the tubes for any sour or coagulated milk.
Make sure that all the above items are observed and proceed to the milk foam adjustment by sequen-
tially executing the following operations:
-
Open the vending machine door;
-
Insert the service key into the door trip;
-
Switch the vending machine on (see the manual) and wait for the boiler to heat up to the temper-
ature specified in settings.
To achieve the optimum foam performance the steam boiler temperature
should be set to 130°С
;
-
Adjust the foam control knob to the middle position (fig. 4.8). For doing this turn the control knob
all the way to the left and then all the way to the right. Set the control knob approximately to the middle
position;
Fig.4.8 - Milk foam adjustment
