Animo OptiFresh Bean Touch, Сервисная книжка

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49 2017/09 Rev. 0.0
OptiFresh (Bean) Touch
EN
level regulation
When a drink is being dispensed the water level drops and the maximum level electrode [1.2] is
released; the inlet valve [1.7] (2.5 litres/min.) opens and immediately refills the reservoir until the
maximum level [1.2] is reached again. If the water level falls under the minimum level electrode [1.3]
during operation, the operating panel display will show [
boiler filling
]. If the supply of water is not
restored within 90 seconds, the display will show the error message [E3 level error] and shut off the
inlet valve [1.7].
Temperature regulation
The heating element [1.5] is turned on when the water temperature falls below the temperature setting
and the minimum level electrode [1.3] registers water. The temperature in the water reservoir is
measured using an NTC precision sensor [1.4] mounted on the outside wall of the reservoir.
The water temperature also drops when drinks are dispensed. To avoid the temperature regulator from
responding too late, the heating element is switched on as soon as the inlet valve [1.7] opens and cold
water is added. The heating element [1.5] switches off again as soon as the inlet valve shuts off. The
heating element always switches off when the maximum boiler temperature of 99˚C is reached.
Steam thermostat
The power relay is secured by a steam thermostat [1.6] which is build in line with the overflow tube
[1.1] from the boiler. The steam thermostat contact is in series with the power relay. This thermostat
prevents the boiler from boiling empty when the relay breaks down in a operating condition.
The thermostat switches the heating element OFF when steam escapes from the boiler, after 8 min-
utes Error E21 will occur. The thermostat must be manually reset.