R638, the food premises regulations
It sets the standard your premises is held to and does not name a cleaning method. No supplier can tell you that a particular machine satisfies it. What a machine can do is make the surfaces it covers easier to keep at that standard.
What R638 covers, and where to read it
The regulation that governs how food premises are built, maintained and kept clean, and the rules a municipal environmental health practitioner inspects against.
Regulations Governing General Hygiene Requirements for Food Premises, the Transport of Food and Related Matters, R638 of 22 June 2018, made under the Foodstuffs, Cosmetics and Disinfectants Act 54 of 1972. It replaced R962 of 2012 and R918 of 1999.