DIN EN 12041:2015 pdf free.Nahrungsmittelmaschinen – Langwirkmaschinen – Sicherheits- und Hygieneanforderungen.
5 Safety and hygiene requirements and/or measures
5.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause.
In addition, the machine shall be designed according to the principles of EN ISO 12100 for relevant but not significant hazards, which are not dealt with by this document.
5.2 Mechanical hazards
5.2.1 General
Where reference is made to interlocking devices throughout Clause 5, they can be interlocked without guard locking and shall comply with EN ISO 14119:2013, Clauses 5, 7 and 8.
Where the interlocking mechanism has movable parts, e.g. position switches, these shall be protected from contamination with dough or dry ingredients, e.g. by mounting them within the machine body.
The safety-related parts of the control system shall present at least a performance level “c” defined in accordance with EN ISO 13849-1.
When fixed guards, or parts of the machine acting as such, are not permanently fixed e.g. by welding, their fixing systems shall remain attached to the guards or to the machinery when the guards are removed.
The stopping time of the machine, when protective devices (e.g. interlocking guards, trip device) are actuated, shall be less than or equal to 1 s from their actuation. Restarting shall only be possible by actuating the starting control.
5.2.5 Flour duster
If there are mechanical risks, the flour containers shall be fitted with a fixed or interlocked guard with dimensions according to EN ISO 13857:2008, Table 4, acting on the flour feed system. If the stopping time of the flour duster is more than I s, the movable guard shall be interlocked with guard locking.
If there are no mechanical hazards (e.g. if the feed consists of a spindle with rubber spokes or notches, or if the flour is sprinkled by a vibrating device) due to the flour feed system and if a guard is necessary to prevent dust emission (see 5.7), this guard shall automatically be closed (e.g. by gravity, etc.). In this case, an interlocked guard is not necessary.
5.2.6 Loss of stability
5.2.6.1 Machines shall be designed to be stable and shall comply with 5.2.6.2 and 5.2.6.3. For machines designed to be fixed to the floor, the instruction handbook (see 7.2) shall indicate the values of forces at the fixing points.
5.2.6.2 Free standing machines without castors or machines installed on a base frame without castors shall be stable when tilted 10° from the horizontal plane in the most unfavourable direction.
5.2.6.3 Free standing machines with castors or machines installed on a base frame with castors shall have at least two castors (or sets of castors) fitted with a locking device, and shall comply with the provisions of 5.2.6.2. DIN EN 12041 pdf download.