Due to an effect of a solenoid of a moving mechanism, when a valve and a shutter are positioned at a first position, a light source is positioned at a first light source position and a shutter is in a state of closing a window. In one embodiment, the method includes the steps of obtaining user input through an electronic user interface, processing the input with stored data on a main computer which is coupled to the user interface, and generating control signals to control the operation of food manufacturing and packaging apparatus according to the user input. Also described herein are methods of treatment for vitamin D insufficiency. to a final temperature in the range of 8\xb0 C. The mounting piece has such a form as to be inserted into the mounting hole, and is provided with a magnet. At least the first hydraulic motor is a dual motor made up of two elementary motors, a first one of which is connected via a series link to the second hydraulic motor.