Details:
Sirai pressure switch 2-Poles 20amp
This is the smaller pressure switches used in 1 and 2 group prosumer and commercial coffee machines.
This switch is used to maintain the boiler temperature which can get scaled over time losing its ability to maintain correct the pressure and boiler temperature.
Typically needs to be replaced if:
Safety valve is venting due to boiler over heating
Group temperature is too hot ie over 95C
Not getting enough steam from the wand.
It is factory preset so will not need to be adjusted - it will restore your correct boiler and group temperature. Most boilers are set at 126c which is approx 100c for water and 94c for group.