Abstract: A motor is connected in series with a power supply through a reversing device for reversing the direction of rotation of the motor and a speed control circuit. The reversing device includes two switches normally in a standby position in which the supply circuit of the motor is open. A command device is capable of alternatively and temporarily switching the switches into an operating position, for starting the motor in the respective opposite directions of rotation, when it receives a signal to do so from detector elements which generate the signal only when they detect a condition of normal operation of the control device of the motor.

Abstract: A control device for refrigerating equipment endowed with devices to regulate the temperature and the level of humidity in the refrigerated space utilizing temperature sensors located in the refrigerated space and/or in an evaporator and having at least one compressor.The control device includes the basic control components for starting and stopping the compressor depending upon the temperature selected by manual control devices and upon the temperature measured by the above-mentioned sensors. It also includes a secondary control unit which is able to start and stop the defrosting of the evaporator depending upon the level of humidity selected by the above-mentioned manual control devices and obtained after a predetermined number of work cycles by the compressor. The control device in accordance with the present invention allows the optimization of the conditions of food conservation in refrigeration equipment, and further enables an increased efficiency and lowered energy consumption of the equipment.