This standard specifies safety and hygiene requirements for the design and manufacture of dough mixers with rotating bowls of capacity ≥ 5 l 1) and ≤ 500 l. These dough mixers are used to process various ingredients e.g. flour, sugar, fat, salt, water and other ingredients in food manufacturers and shops. These machines are sometimes used in other industries (e.g. pharmaceutical industry, chemical industry, printing), but hazards related to these uses are not considered in this standard. The following machines are excluded :
- planetary mixers (EN 454) ;
- continuously fed machines ;
- mixers with stationary vertical bowls ;
- experimental and testing machines under development by the manufacturer ; -
domestic appliances ;
- automatic loading and unloading devices.
The intended use of the machine, as defined in 3.12 of EN 292-1:1991 and as given in the manufacturers instruction handbook, is the loading of various ingredients, processing them by means of a kneading tool, unloading and cleaning. The operation is usually carried out in cycles of variable duration. Manual operations are sometimes necessary to take samples, to scrape the bowl or add ingredients. The significant hazards covered by the standard are mechanical (crushing, shearing, trapping, impact and loss of stability), electrical, ergonomic and also those resulting from noise, inhalation of flour dust and lack of hygiene. This standard does not deal with noise reduction. It applies only to machines manufactured after the date of issue of this standard.
Directives related to this standards.
Directive 2006/42/EC of the European Parliament and of the Council of 17 May 2006 on machinery, and amending Directive 95/16/EC (recast)
prEN 453 rev
30.98 Project deleted
Sep 5, 2008