How to set the ALESSI kitchen timer and can the sound be turned up? Thank you Anna

It has nothing to do with the timer, I use this brand, and it's also a timer. The correct way to use this pot, if you set the dead one level of pressure, when the pressure indicator shows the first line (the timer will make a dripping sound), you should adjust the fire to the minimum to keep the constant pressure and prevent it from reaching the exhaust, if there is a beep sound, it is the alarm sound of excessive fire and overpressure, at this time, the heat source should be turned off, and then the pressure should be maintained with the minimum fire until the cooking time arrives; In the same way as setting the second gear, when the pressure indicator shows the second line (the timer will make a dripping sound), the fire should be adjusted to a minimum, and the constant pressure should be maintained to prevent it from exhausting ......This pot is "silent", which is different from the principle of domestic pressure cookers and is very energy-efficient.