The cooling controller ST181-VK4KA.12 is equipped with three relays and an exit with variable revolution numbers specifically for the ventilation process. The revolution number for airing is determined by proven parameters in finely gradated values that are reproducible at any time. Varying revolution numbers during cooling and defrosting are part of the concept. When operated at low ventilation numbers, in the beginning, the ventilator is run at full rotation power for a short time as a kick-start support.
The three power exits with our proven 16A relay allow complete operation of the cooling circle as well as further additional features, as for example the lighting and many other functions. The timer allows a 1-week time management for the defrosting periods as well as for setting the cooling chamber temperature at night or on the weekend. With regard to the parameter level, programming of this timer is easy and user-friendly. The actual time can be re-set simply directly on the operator surface.
