Question about Lovis vacuum pore cleaner

Should the appliance start vacuuming as soon as the power button is pressed (or is some combination necessary)? When the button is pressed, it beeps and the mini-display lights up (showing battery level, and suction power), but then nothing happens (not even when the unit is put on). So I wonder if it's broken (but the fact that it rings and beeps seems to indicate that it's already adjusted)? The filter and seal were already in and seem to be OK.