25
figure 2
2 OPERATING PRINCIPLE
The operating principle of this dispenser is based on cooling and concurrently mixing the product inside the transparent tank. When
the product reaches negative temperatures, it begins to freeze, thereby increasing in density and therefore the effort required by the
geared motor to mix it. Using the electricity consumption value, the electronic control system is able to determine this effort and when
it reaches a set level, the solenoid valve is closed, thereby shutting off the supply of refrigerant gas to the evaporator cylinder. Since
the product is no longer cooled, it tends to melt, thereby decreasing in density and therefore the effort required by the geared motor
to mix it. When the effort drops below a set level, the solenoid valve re-opens, the refrigerant gas resumes its passage through the
evaporator cylinder and the product cools down and increases in density again. This regulation system ensures the density of the
IMPORTANT
On dispensers with more than one tank, should you wish to turn off a single
tank, you will have to press the key for the operating mode currently in use on
the related control panel. Both the cooling and the mixer will stop and the corre-
sponding display will show the message: OFF.
(A) ON / OFF key (on dispensers with more than one tank, this key is only present on the right-hand tank control panel): press
it for one second to turn the dispenser on or off. When the appliance is in use, press it briefly to turn the lights on or off, where
featured.
(B) Status indicator light (on dispensers with more than one tank, this indicator light is only present on the right-hand tank control
panel): if it is on, this means the main switch situated under the dispenser is turned on and the appliance is powered and
ready for use.
(C) Plus key: in ice cream production mode, this key increases the density of the product.
(D) Minus key: in ice cream production mode, this key decreases the density of the product.
(E) Conservation key: allows you to select the product conservation operating mode. On dispensers with more than one tank, if
you hold this key down while the tank is in product conservation mode, the corresponding tank will be turned off. If you press
it for two seconds, the dispenser switches to "Cleaning" mode: the mixer is on but the cooling is off.
(F) Conservation indicator light: flashing light => product conservation mode selected, conservation temperature not reached.
Indicator light permanently on => product conservation mode selected, temperature reached.
(G) Ice cream production indicator light: flashing light => ice cream production mode selected, product not ready. Indicator light
permanently on => ice cream production mode selected, product ready.
(H) Ice cream production key: allows you to select the ice cream production operating mode. On dispensers with more than one
tank, if you hold this key down while the tank is in ice cream production mode, the corresponding tank will be turned off.
(I) Product temperature.
(L) Decimal point.
(M) Solenoid valve indicator light: indicator light on => solenoid valve open. Indicator light off => solenoid valve closed. Flashing
indicator light => solenoid valve opening delay under way (factory set to 15 seconds).
(N) Compressor indicator light: indicator light on => compressor on. Indicator light off => compressor off. Flashing indicator light
=> compressor start delay under way (factory set to 120 seconds).
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