Don’t forget that these machines have boilers that are treated as pressure vessels under the “The Pressure Systems Safety Regulations 2000” and need to be safety tested by an HSE licensed contractor. http://www.allaways.co.uk/espresso-coff … g.html#hse
Gives futher info
You can still repair as the inspection is only required annually not after every repair.
Also if you can find a local inspector to work with it makes it easier, especially if you are doing up machines for resale.
Also depends on the type of machine as the boilers in some of the bean to cup machines are flash boilers and not pressure vessels.