The devices operate at atmospheric pressure and therefore do not fall under any pressure parts testing or written schemes of examination.

Irrespective whether or not it comes under PSSR, the machines require servicing, maintainance & inspection as recommended by the manufacturer. Sainsbury's finds coffee machine explosion fault:- http://www.bbc.co.uk/new...gland-hampshire-11320258

Following extract from HSE FAQ on PSR. "Commercial coffee boilers incorporating a pressure vessel (e.g. cappucino makers) generate steam and therefore come under the requirements of PSSR. Regulation 8 requires the drafting and completion of a written scheme of examination (WSE), and regulation 9 requires that this examination be carried out by a competent person. Please see other FAQs for further details of the WSE, the examination in accordance with the written scheme, and the role and attributes of the competent person." This link to an insurance company information note gives some useful info http://insider.zurich.co...ne-Boilers-factsheet.pdf Safed also have an info sheet PSG08 Guidelines for the examination of electrically heated café boilers. http://safed.co.uk/techn...ides/pressure-equipment/ and then search or scroll down to PSG08 Both refer to a 12/14 month maximum periodicity unless risk assessment shows otherwise. p48

Ah, now I didn't realise that - every day is a learning day... Jim