untitled BRITISH STANDARD BS EN 13885 2005 Food processing machinery — Clipping machines — Safety and hygiene requirements ICS 67 260 ����������� � ��� � ������������������� ��������� ��� ���������� �[.]
This European Standard applies to clipping machines
This European Standard outlines essential safety and hygiene requirements aimed at reducing hazards associated with the commissioning, operation, and maintenance of clipping machines used for portioning and sealing food-filled casings These machines are designed for use in butcheries, meat processing facilities, central kitchens, and other food processing environments.
This European Standard addresses all major hazards and potential risks associated with clipping machines, considering both their intended use and reasonably foreseeable misuse scenarios as outlined in Clause 4.
This European Standard is not applicable to clipping machines which are manufactured before the date of publication of this European Standard by CEN.
This European Standard covers the following types of machines
Concerning the sort of actuation:
machine for gathering up by hand, power motioned locking-stroke;
machine for automatic-motioned gathering and automatic-motioned locking-stroke
machine with removal by fixed or movable clip-guide (see Figures 1 and 2);
machine with spread-removal (see Figures 3 and 4)
Figure 1 — Machine with removal by fixed clip guide Figure 2 — Machine with removal by movable clip guide
Figure 3 — Machine with spread-removal Figure 4 — Spread-removal – detail
Description
Clipping machines will be used for closing of tubes with a single-clip (one side) or a double-clip (endlocking and startlocking)
The machines are equipped with closing tools (punch/die), which make the locking by deforming the locking- element (clip)
A removal or gathering process is employed to create a free space, allowing the tube to be positioned so that the locking equipment can be placed over the pressed tail and securely locked in place.
The clipping machine is automatically positioned at the end of the filling tube, and after each filling portion is ejected, one or two clips are applied to the casing.
The machine will slice the filled portion from the skin that remains on the filling tube, and if needed, an extra loop will be added for hanging the package.
Intended use
A clipping machine is engineered to work in conjunction with filling equipment, allowing food products to be transported through a filling tube into a casing that is gathered on the tube Once filled, the casing is securely closed using a clip.
Furthermore, it is usual to close already filled casings, bags or other packages by hand with a free-standing or hand-operated/hand held clipping machine
Although it should be advised against, the standard, taking into account practice, deals with the hazards due to cleaning with pressurised water
With the aim of clarifying the intentions of the standard and avoiding doubts when reading it, the following assumptions were made when producing it:
only designated and instructed persons operate the machine;
place of use is adequately lit
The referenced documents are essential for applying this document For dated references, only the specified edition is applicable, while for undated references, the most recent edition, including any amendments, is relevant.
!EN 574, Safety of machinery — Two-hand control devices — Functional aspects — Principles for design
EN 614-1, Safety of machinery — Ergonomic design principles — Part 1: Terminology and general principles
EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards
EN 983, Safety of machinery — Safety requirements for fluid power systems and components — Pneumatics
EN 1005-1, Safety of machinery — Human physical performance — Part 1: Terms and definitions
EN 1005-2, Safety of machinery — Human physical performance — Part 2: Manual handling of machinery and component parts of machinery
EN 1005-3, Safety of machinery — Human physical performance — Part 3: Recommended force limits for machinery operation
EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection
EN 1672-2:2005, Food processing machinery — Basic concepts — Part 2: Hygiene requirements
EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989)
EN 61496-1:2004, Safety of machinery — Electro-sensitive protective equipment — Part 1: General requirements and tests (IEC 61496-1:2004, modified)
EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996)
EN ISO 11201:1995 outlines the engineering method for measuring sound pressure levels emitted by machinery and equipment at workstations and other designated locations This standard focuses on assessments conducted in an essentially free field over a reflecting plane, ensuring accurate noise emission evaluations.
EN ISO 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and equipment
EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003)
EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006)
EN ISO 13857, Safety of machinery — Safety distance to prevent danger zones being reached by the upper limbs (ISO 13857:2008)
EN ISO 14121-1, Safety of machinery — Risk assessment — Part 1: Principles (ISO 14121-1:2007)"
For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003,
EN ISO 12100-2:2003, and the following apply
3.1 discharge device inclined plane with/without rolls or driven discharge belt
3.2 clip/closing element closing clamp out of metal or plastics in one- piece- or two-piece type
3.3 clip guide feed-channel to the closure tool
3.5 casing brake device for retaining and braking of the casing on the filling-tube
3.6 string-/band-dispenser device for manufacturing of ring-sausages
3.7 code device device for marking the packaged unit
3.8 magazine receptacle to store the clips
3.9 oil fog particles of oil in the waste air from cylinders and valves
3.10 gathering folding of the casing
3.11 loop at the tail fixed eye to hang up the package
3.12 spread-removal device for gathering of the casing and making a free space for the clip
3.13 punch and die closure tools
3.14 dividing-knife fixed or movable knife for cutting the tail
3.15 removal device for dividing the filling-product in the casing and making a non-product-place for setting of the clips
3.16 tail gathered casing at the end of the package
3.17 conveyance-channel channel for feeding the clips from the magazine to the closing-tools
General
This Clause and Annex C outline all significant hazards, hazardous situations, and events identified through a risk assessment for this type of machine, necessitating actions to eliminate or mitigate risks.
Prior to utilizing this document, it is essential to conduct a risk assessment of the clipping machines in accordance with EN ISO 14121-1 to ensure that all significant hazards, hazardous situations, and events outlined in this clause have been identified.
Mechanical hazards
Figure 5 — Clipping machine with fixed clip guide
Zone 1: closing zone (see Figure 5)
Hazard from severing fingers by the punch or from cutting of the fingers by automatic movement of the dividing knife for the casing
Figure 6 — Clipping machine with movable clip guide
Zone 1: closing zone (see Figure 6)
Hazard of severing fingers by the removal device or an automatic movement of the punch
Hazard of cutting the fingers by automatic movement of the dividing knife for casing, loop or string
Figure 7 — Floor machine – Danger zones
Zone 2: product-infeed-side (see Figure 7)
Hazard of severing hand or fingers between the end of the filling-tube and the casing brake by movement of the clipping machine
Zone 1: closing zone (see Figure 7)
Hazard of severing or cutting of the fingers:
by automatical movement of the removal device;
by movement of punch, mould or dividing-knife
Zone 3: product outfeed-side (see Figure 7)
Hazard of severing hand or fingers at the outfeed-device
Hazard of injury of the hands:
by string- or band dispenser;
Hazards of severing hand or fingers, e.g between the end of the filling-tube and the casing brake by movement of the clipping machine
Hazard of severing or cutting of fingers:
by automatical movement of the removal-device;
by precipitating punch, die or dividing-knife;
by automatical movement of clipping machine in the pedestal
Drives of moving machine parts
Hazard of drawing in fingers or hand.
Electrical hazards
4.3.1 Direct or indirect contact with life parts
Hazard of electrical shock to the body
4.3.2 Electrical components with insufficient safety level
Hazard of mechanical injury to the body due to malfunction.
Pneumatic hazards
4.4.1 Hazard of the health by oil-fog
4.4.2 Hazard of mechanical injury of the body by remainder energy.
Hazards generated by loss of stability
Impact or squeezing hazard to the body if machine topples over.
Hazards generated by noise
Clipping machines can generate noise which can result in hearing damage, in accidents due to interference with speech communication and interference with the perception of acoustic signals.
Hazards generated by neglecting ergonomic principles
Unhealthy body postures or excessive efforts
Insufficient consideration of human hand/arm or foot/leg anatomy during machine design
Hazard of harm to the body.
Hazards generated by not neglecting hygienic principles
Hazard (spoilage) of the foodstuff
Hazard of damage to health of the user through food poisoning
Hazard (contamination) of foodstuffs through traces of cleaning- and disinfecting materials
Hazard of damage to health of the user through harm
Foreign objects originating from raw materials, machines or other sources
Hazard of damage to the health of user through harm
5 Safety and hygiene requirements and/or protective measures
General
Clipping machines shall comply with the safety requirements and/or protective measures of this Clause and Annex C of this document
In addition, they shall be designed according to the principles of EN ISO 12100 for hazards relevant but not significant, which are not dealt with by this document (e.g sharp edges)
!For hazards which are to be reduced by the application of the type B-standards such as EN 614-1, EN 953,
EN 1005-3, EN 1088, EN 1672-2, EN 60204-1, EN 60529, EN ISO 12100, EN ISO 13849-1 and
According to EN ISO 13857, manufacturers are required to conduct a risk assessment to determine the requirements of the type B-standard, which must be integrated into the overall risk assessment of the machine.
To minimize risk, the physical arrangement of the installed circular saw is crucial Manufacturers must include in the user information details about the risk reduction measures, any applicable limits on requirements, and, if necessary, the verification methods.
To minimize risk, manufacturers must provide a safe working system for machinery, including essential details in the user information about the system and the necessary training for operating personnel.
Mechanical hazards
The machines shall be designed in accordance with Annex C and to the conditions mentioned below
Fixing systems for fixed guards or removable components of machine casings must stay connected to the guards or the machine even when the guards are taken off.
Zone 1: Closing zone (see Figure 5)
Access to the danger point of punch and dividing knife shall be prevented or restricted:
by limiting the width of the slots between the clip guides and the knife guides to S1≤ 8 mm (see Figures 9 and 10) or
by attaching protective beadings or similar provisions at both sides in such a way, that S2 – t ≤ 8 mm
At mechanical driven clipping machines with fixed clip guide, the casing shall be introduced in an opening slot
At the end of this slot or in the hand region is a trigger for the punch and the dividing knife.
Figure 9 — Table top machine with fixed clip guide
If the slots are more than 8 mm, fixed beadings on both sides shall be provided in such a way that the safety dimension is S 2 – t ≤ 8 mm (example for design see Figure 11)
Figure 11 — Section A/A with fixed protection beading 5.2.2.2 Clipping machines with movable clip- guide
The access to the danger point at removal, punch and dividing knife shall be restricted
Power-driven tabletop clipping machines feature a hand-operated, movable clip guide that ensures safety by allowing the punch or knife to be triggered only when the clip guide is securely closed This movable clip guide is an integral component of the machine's safety system.
Figure 12a — Clipping machine with movable clip guide – removal open Figure 12b — Clipping machine with movable clip guide – removal shut
Figure 12 — Clipping machine with movable clip guide in different positions
Access to the danger point of punch and dividing knife shall be prevented or restricted:
by limiting the width of the slots between the clip guides and the knife guides to S 1 ≤ 8 mm (see Figures 10 and 12b) or
by attaching protective beadings or similar provisions at both sides in such a way, that S 2 – t ≤ 8 mm
At mechanical driven clipping machines with fixed clip guide, the casing shall be introduced in an opening slot
At the end of this slot or in the hand region is a trigger for the punch and the dividing knife.
For the automatic power driven swivelling of the top of the machine into its working position, the access to the danger point shall be prevented
This can be achieved by:
guard according to EN 953 This guard can be fixed or movable If it is movable, it shall be interlocked (or in accordance with 5.3.7);
electrosensitive guard according to EN 61496-1 By using light barrier, it shall be in accordance with
The manufacturer can consider other solutions, but the equivalence shall be established by a risk assessment
If the top of the machine will be swivelled by hand, there is no technical protection measure necessary
The access to the danger-points at removal, die, punch and dividing knife shall be restricted (see Figures 12a and 12b)
Access from the infeed side
Access to danger points via the machine's casing brake must be limited The inner diameter (D) should not exceed 60 mm, and the distance (A) to the danger point must be at least 75 mm (refer to Figure 14).
Access from the outfeed side
Access shall be restricted by guarding The safety distance depending from the opening height shall be in accordance with the values of Table 1 (see Figures 13 and 14)
NOTE Because of technical construction constrains, the se safety distances are not completely in line with
Movable guards shall be interlocked (see 5.3.7)
Safety devices without contact (e.g light barrier) can be used, if the same safety level is achieved
1 Protection hood or light barrier
Figure 13 — Infeed and outfeed side at clipping machines with protection bars
A two hand control device shall be provided for starting the machine with the first clip
This two hand control device shall be at least of type I in accordance with EN 574
The time lag between actuation of both control devices shall be limited to ≤ 5 s
Figure 15 — Position of actuation devices
A hold-to-run control device may be utilized in place of a two-hand control device, provided that the distance from the front edge of the guard to the control device is at least 1,250 mm.
Safety devices without contact (e.g light barrier) can be used, if the same safety level is achieved
The inrunning nip of the outfeed belt shall be safeguarded with a fixed guard, in accordance with EN 953
This means e.g string- or band dispenser, coding device etc
To ensure safety around additional devices, it is essential to implement fixed or movable interlocked guards Alternatively, non-contact safety devices, such as light barriers, may be utilized, provided they achieve the same level of safety.
Danger zones at the driving system shall be safeguarded This will be achieved by the following measures:
At the driving system, there has to exist a guard (cover) in accordance with EN 953 The guards may be fixed or movable and in this case interlocked
If guards need to be removed frequently for changing the procedure or for cleaning, they shall be movable and interlocked
Requirements to the interlocking of movable covers see 5.3.7.
Electrical hazards
The electrical equipment shall comply with EN 60204-1
5.3.2 Stopping function of switching-devices
Stopping functions shall be in accordance with 9.2.2, category 0 or 1 of !EN 60204-1:2006"
Clipping machines typically do not need an emergency stop device; however, if the manufacturer's risk assessment indicates that installing such a device would decrease stopping time, the machine must be equipped with one.
If no emergency stop device is fitted, the normal OFF switch shall be easily reachable from the operator position.
Electrical operating components shall comply with the following degrees of protection in accordance with
IP X5 External electrical operating components:
on the control box on the machine;
on the control box located in the process room
IP X3 Internal electrical operating components:
IP X2 Internal electrical operating components:
in a machine with completely enclosed housing with the degree of protection IP X5 Protection against condensate water shall be provided;
in the control box enclosure
IP X0 Internal electrical operating components:
The machine features a fully enclosed housing with an IP X5 protection rating, ensuring safety against condensate water Additionally, it is designed to protect fingers and the back of the hand, enhancing user safety.
To ensure the safe cleaning of clipping machines with pressurized water, it is essential to prevent water from entering the external electrical components This can be accomplished through various protective measures.
The electrical operating components shall be covered by hoods The manufacturer shall give information about the case of this provision in the instruction handbook
Hoods that cover external operating components can be lifted to access the ON and OFF switches, ensuring that the OFF switch remains usable when the hoods are closed (refer to Figure 16) If membrane switches or similar systems are designed for cleaning with pressurized water, hoods are not required.
Figure 16 — ON/OFF-switch with hood
Clipping machines must be equipped with ON and OFF switches located on the operator's side To prevent accidental activation, the ON switch should feature protective measures, such as a protective collar.
5.3.6 Safety requirements related to electromagnetic phenomena
Clipping machines must possess adequate immunity to electromagnetic disturbances, ensuring safe operation as designed and preventing dangerous failures when subjected to the specific levels and types of disturbances anticipated by the manufacturer.
The manufacturer of the machines shall design, install and wire the equipment and sub-assemblies taking into account the recommendations of the suppliers of these sub assemblies.
5.3.7 Interlocking and safety related parts of the control system
Parts of the control system fulfilling safety function shall be designed and constructed in accordance with !EN ISO 13849-1"
The interlocking system must adhere to section 4.2.1 of EN 1088:1995, ensuring that the safety-related components of the control system achieve a minimum Performance Level "a" as specified in EN ISO 13849-1:2008 Additionally, any deviations from these standards will necessitate the implementation of further requirements.
For hygiene compliance, proximity switches, such as magnet switches, must achieve a minimum Performance Level "c" as per EN ISO 13849-1:2008 In cases where the PDFs lack a corresponding counterpart from the manufacturer, specific installation requirements must be established based on a thorough risk analysis conducted by the manufacturer This analysis should particularly address the potential for simple defeat of the system Additionally, both the signal-processing circuit and the power circuit should meet at least a Performance Level "a."
Pneumatic and hydraulic safety components in control systems must utilize positively actuated sensors, with the "pressure on" signal designated for machine release It is essential that for safety-related sensors, valves, and signal-processing components, either the manufacturer provides adequate flank protection or ensures that flank errors do not compromise safety functions.
The sensor part of the interlocking device shall comply with 5.7 of EN 1088:1995 and be integrated into the machine housing in order to:
be protected against mechanical damages;
be protected against the effects of cleaning and disinfection materials;
be protected against the effects of cleaning fluids (water);
be protected against tampering by simple methods.
Pneumatic hazards
Pneumatic equipment shall comply with EN 983
The pneumatic equipment shall be designed for allowing the use of physiological harmless oils The types of oil have to be described in the instruction handbook
When a machine is halted using safety devices, any remaining stored pneumatic energy that poses a risk must be addressed Therefore, it is essential to implement devices designed for the dissipation of this stored energy to ensure safety.
Hazards generated by loss of stability
5.5.1 Clipping machines (fixed and mobile) shall be designed to be stable under normal operating conditions
5.5.1.1 For clipping machines, which are not fixed on the floor there shall be a sufficient safety of tilting
Mobile clipping machines must be engineered to prevent rolling, slipping, or tipping during standard operation This stability can be ensured through the design of the machine, including the configuration of its wheels and the placement of its center of gravity.
5.5.1.3 Mobile clipping machines shall be stable There shall exist e.g minimum 2 support rollers (or legs) and 2 pivot castors with locking devices to prevent them rolling and/or turning
The manufacturer must provide comprehensive details regarding the foundation load and fixation in the instruction manual, including information on the locking device and the quality of the floor.
5.5.3 Machines tested in accordance with Table 2 shall not roll, slip, or start tilting at their location.
Noise reduction
The noise emission of clipping machines shall be reduced at the design stage to low levels by applying noise reduction measures at source as given in EN ISO 11688-1
The effectiveness of the implemented noise reduction strategies is evaluated by comparing the actual noise emission levels (refer to Annex A) with those of similar machines within the same category.
Ergonomic requirements
It is essential to adhere to the ergonomic requirements outlined in EN ISO 12100-2:2003, 4.8, as well as in EN 614-1 and EN 1005-1, EN 1005-2, and EN 1005-3 The instruction handbook must include all relevant information for users to meet these ergonomic objectives.
Hygiene and cleaning
The design of the machines shall be in accordance with EN 1672-2 or with the requirements laid down below as well as in accordance with Annex B
Clipping machines equipped with an integrated filling tube have food contact areas that encompass both the inner and outer surfaces of the filling tube, including the casing brake if it is located inside the sleeve.
Rests of products which are out of the closed sleeve are not allowed to get back to the food-stuff circulation The instruction handbook has to mention above
For machines without integrated filling-tube, there exists no food area
Key splash area non food area
punch in the closure area;
punch in the closure area;
dividing knife (see Figures 3 and 4)
5.8.3.3 Machines attached to or integrated with other machines
Some components in the splash area are not easy to clean e.g
For the cleaning and sufficient removal of cleaning and disinfecting agents there shall be special instructions in the instruction handbook (see 7.2.4)
All other parts of the machine
6 Verification of safety and hygiene requirements and/or protective measures
This clause outlines the verification methods for ensuring compliance with safety requirements of the standard Acceptance criteria and verification conditions, which may not be immediately clear, are detailed in the accompanying table These testing methods are to be conducted using machines.
Dismantling can be necessary for some tests A partially dismantled machine shall not invalidate the result of the verification
5.2.2 Measuring of the dimensions (individual)
Verification of locking devices (individual) Functional test of ON/OFF switches (individual) Verification of the electrical diagram (type) 5.2.3 Measuring of the dimensions (individual)
Verification of the electrical diagram (type) Visual inspection (individual)
5.3.2 Tests according to !EN 60204-1:2006, Clause 18" have to be done at all machines
(individual) Verification of IP-grade (type) 5.3.3 Test according to EN 60529 (individual)
Visual inspection (individual) 5.3.4 Tests according to !EN ISO 13849-1" (individual)
Visual test (individual) 5.4 Calculation or test (type)
5.5 Calculation or position test on a surface with an inclination of 10 0 (type)
Functional test (individual Visual inspection (individual) 5.6 Noise emission measurement and declaration according to Annex A (type)
Measurement (type) Controlling of weight (type) 5.8 Measurement of surface roughness, radii, grooves (type)
Visual test, especially of welding seams (individual)
General
The user information shall fulfil the requirements of !EN ISO 12100-2:2003, Clause 6" An instruction handbook shall be provided At least the following information according to 7.2 shall be provided.
Instruction handbook
a) Information relating to transportation, installation and storage:
of the loading and unloading device b) Information relating to commissioning:
information relating to the machine, guard covers and other safety devices;
information relating to the hazards which can not be fully eliminated by safety devices, e.g at the infeed side;
The instruction handbook and any sales literature for the machine must include information on airborne noise emissions, as determined and declared in accordance with Annex A of the relevant European Standard.
the A-weighted emission sound pressure level at workstations, where this exceeds 70 dB(A); where this level does not exceed 70 dB(A), this fact shall be indicated;
the peak C-weighted instantaneous sound pressure value at workstations, where this exceeds
63 Pa (130 dB in relation to 20 àPa);
the A-weighted sound power level emitted by the machinery, where the A-weighted emission sound pressure level at workstations exceeds 80 dB(A)
Noise emission values must include specified uncertainties "K." Additionally, the operating conditions of the machinery during measurement and the methods used for measuring should be clearly described.
information relating to the electrical installation (see !EN 60204-1:2006, Clause 17") and electrical diagram or reference to storage location (e.g pocket) inside the machine d) Information relating to normal operating conditions:
information relating to the use of locking devices on wheels;
information relating to the use of components, which will stop the machine;
Before relocating the machine, ensure it is powered off and the electrical plug is disconnected Take care to avoid damaging the electrical supply cable during the moving process.
information relating to the use of interlocked guards;
description on the non-manipulating of guards;
information required for achieving the ergonomic objectives;
information relating to the safe securing of malfunctioning machines;
information relating to the daily verification of guard- and interlocking devices before using the machine e) Information relating to cleaning:
This article outlines the cleaning and disinfecting operations, emphasizing the importance of using appropriate cleaning agents as specified in the manufacturer's safety information sheet It highlights the necessity of selecting effective disinfecting agents, also referencing their safety information sheets, to ensure safe application Additionally, it discusses the role of rinsing agents and recommends specific application times to mitigate toxic hazards during the cleaning process.
information relating to the operating procedures with cleaning and disinfecting operations and wearing personal protection devices;
When cleaning machines with pressurized water, it is essential to use hoods over external electrical components to protect them from water exposure The areas covered by these hoods must be thoroughly cleaned to ensure proper maintenance and functionality.
information relating to the removal and installation of protective guards for cleaning purposes f) Information relating to maintenance:
Regular inspections and maintenance operations are crucial for ensuring safe machine operation This includes adhering to established procedures for disconnection, locking, neutralization of residual energy, and testing to confirm the machine's safe state.
information relating to the use of lubricating materials;
information on non suitable lubricating materials;
drawings which are required to carry out these tasks;
!the specifications of the spare parts to be used, when these affect the health and safety of operators";
electrical schematics g) Operator training see 7.3.
Training of operators
Operators must receive training on the hazards related to the use and maintenance of clipping machines, along with the necessary safety precautions The instruction handbook will outline the training components and the required training standards.
NOTE It is recommended that operating personnel should be instructed during installation by a representative of the manufacturer or the supplier of the machine
Also, that the training should be repeated as required in regular intervals It is recommended that the safety related parts of the training should be repeated twice a year.
Marking
Clipping machines conforming to this document shall be marked !permanently and legibly" with the following information on its rating plate:
the business name and full address of the manufacturer and, where applicable, his authorised representative;
designation of series or type;
the year of construction, that is the year in which the manufacturing process is completed;
rating information, including supply voltage and frequency, power rating."
!1) For machines and their related products intended to be put on the market in the EEA, CE marking as defined in the applicable European Directive(s), e.g Machinery."
Noise test code for clipping machines (grade 2)
A.1 Determination of the emission sound pressure level
EN ISO 11201 shall be applied in order to determine the emission sound pressure level
The measurements shall be taken at the normal operator position at a distance of
The location of the microphone shall be defined as follows:
At a height of 1,55 m above the floor, to be in right angle with the clipping tool with microphone directed to the machine
!NOTE If it is required to determine the sound power level of a mixing machine EN ISO 3744 should be applied The parallelepiped measurement surface should then be chosen."
The test field shall be in accordance with Clause 6 of EN ISO 11201:1995 It shall be laid out in accordance with Annex A of EN ISO 3744:1995
NOTE In free-field tests, the environmental correction factor K2 is assumed to be equal or smaller than 0,5 dB and is therefore negligible
A table-top machine to be tested shall be placed on a reflecting (acoustically hard) testing table, as described in Annex B of EN ISO 11201:1995
Floor mounted machines shall be placed on a reflective floor and be sufficiently removed from any reflective walls or ceilings or any other objects
The test shall be carried out if the machine is running at maximum speed and is closing and dividing air-filled skins
The measurement shall be carried out over a complete working cycle of more than 15 s whereby stopping shall be excluded
A standard deviation of reproducibility of 0,5 dB to 2,5 dB is expected for the A-weighted emission sound pressure level determined according to EN ISO 11201
The information shall be in accordance with Clause 12 of EN ISO 11201:1995
All deviations from this noise test code and from EN ISO 11201 shall be documented together with the technical justification for these deviations
The test report must adhere to Clause 13 of EN ISO 11201:1995, providing essential information for manufacturers to create a noise declaration and enabling users to verify the declared values.
This information shall at least contain:
reference to the noise test code and to the basic noise emission standard EN ISO 11201;
locations of the microphone position for the measurement of the emission sound pressure level at the work station;
All requirements of the noise test code must be confirmed as fulfilled; if not, any unfulfilled requirements should be clearly identified Additionally, any deviations from the requirements must be stated, accompanied by a technical justification for these deviations.
A.7 Declaration and verification of noise emission levels
A noise emission declaration for clipping machines must be provided as a dual number declaration in accordance with EN ISO 4871 This declaration should include the noise emission value \$L_{pA}\$ along with the associated uncertainty \$K_{pA}\$.
The uncertainty K pA is expected to have a value of 2,5 dB
The noise emission declaration must clearly indicate that the emission sound pressure level L pA has been measured in accordance with the noise test code and the basic standard EN ISO 11201 If this is not the case, the declaration should explicitly outline any deviations from the noise test code or the basic standard.
Verification will be conducted in accordance with EN ISO 4871, utilizing the same mounting, installation, and operating conditions as those employed during the initial assessment of noise emission values.
NOTE Additional noise emission values can be given in the declaration
Design principles to ensure cleanability of clipping machines
For the purposes of this Annex, the following terms and definitions apply
The food area includes all surfaces that will come into contact with foodstuffs, as well as those surfaces that may interact with food under normal operating conditions and subsequently return to the main product stream.
B.1.2 splash area area comprising surfaces on which part of the foodstuff may splash or flow along under normal operating conditions and does not return into the main product stream
B.1.3 non-food area all other areas not specified above
B.1.4 joined surfaces surfaces shall be joined such that product particles cannot be trapped, can be easily removed and do not cause a contamination hazard (see Figure B.1)
B.1.5 easy to clean machines are designed and constructed such that it is possible to remove dirt with a simple cleaning method e.g cleaning agent and pressurized water (see Figure B.1)
Materials of construction shall comply with !EN 1672-2:2005, 5.2"
!All legal requirements in force for materials and articles in contact with food shall be met, as well the general requirements as those related to specific materials, e.g plastics."
B.2.2.3 Materials for Non-food area
Surfaces and components in the various areas shall meet the following requirements:
B.3.2.1 Surfaces in the food area shall be smooth and free of grooves and depressions (see Figure B.1)
B.3.2.2 Inside corners: The angle formed by the intersection of two surfaces shall be ≥ 90° and have a radius of ≥ 3,2 mm (see Figure B.2)
Smaller radii are admissible if no other solutions can be found for reasons of process engineering, manufacturing technology (e.g welding seam) or economic feasibility (see Figure B.2)
1 Radius machining operation bent blade 2 Radius welding seam
Figure B.2 — Angles and radii in the food area
Parts of machines, e.g blades and their fixing parts can have recesses, grooves and corners with smaller radii due to product manufacturing necessities These rollers should be easy to clean
A corner with an angle of > 135° without a radius is permissible The distance between two edges shall be ≥ 8,0 mm (see Figure B.3)
Figure B.3 — Angles in the food area
Should a corner be formed by the intersection of three planes, then the corners formed shall have angles of
≥ 90° and radii of ≥ 6,4 mm, also corners with an angle of ≥ 135° are permitted without a radius (see Figure B.4)
Figure B.4 — Intersecting surfaces in the food area B.3.2.3 Grooves may be used if the inner radius is ≥ 3,2 mm and the depth < 0,7 times the radius
B.3.2.4 Joints and seams shall be welded or sealed and as smooth as the connected surfaces (see
B.3.2.5 Surface roughness shall be ≤ R z 25 àm, in those areas where it is technically possible
B.3.3.1 Surfaces shall be smooth (see Figure B.1)
B.3.3.2 Inside corners: The angle formed by the intersection of two surfaces shall be ≥ 80° and have a radius ≥ 3,2 mm
When three surfaces intersect, the radius of the corner formed by the intersection of any two surfaces must be at least 6.4 mm, while there are no specific radius requirements for the joining points of the third surface.
Angles ≥ 110° without radii are admissible
B.3.3.3 Grooves may be used if the inner radius is ≥ 3,2 mm and the depth < 1,0 times the radius
B.3.3.4 Openings are permissible if they go right through and have a diameter ≥ 16 mm
Joints and seams must be continuously welded or sealed, except when formed by overlapping sheet metal surfaces vertically, ensuring no horizontal corners for dirt accumulation The minimum overlap should be 12 mm, and non-overlapping joints should allow for easy separation for cleaning For further details, refer to Annex B.
Fastening methods such as screws, bolts, and rivets with low profile heads, as illustrated in Figure B.5, should only be utilized when alternative fastening options are not feasible These methods are also preferred for their ease of cleaning.
The following types of screws shall not be used:
hexagon socket head cap screws;
Figure B.5 — Admissible fasteners – head profiles
B.3.3.7 Surface roughness shall comply with the requirements of B.3.2.5
Surfaces should be as smooth as possible, minimizing the presence of grooves, corners, holes, gaps, and joints Additionally, closed hollow spaces must be adequately sized to facilitate thorough cleaning and, when necessary, disinfection.
Castors should be cleanable (see Figure B.6) b < 25 mm a ≥ 3,5 mm b > 25 mm a ≥ 6 mm b is the largest dimension of coverage on the circumference of the castor
Common hazards for food processing machines and reduction requirements applicable to clipping machines
In the food industry, the frequency of cleaning in critical areas heightens the risk for operators This is essential for maintaining product flow and ensuring cleanliness between different products during the workday Additionally, gaining access to machine parts for thorough cleaning is necessary to meet hygiene standards, both throughout the day and at the end of shifts.
The designer shall carry out a hazard assessment of the cleaning requirements, the risks from the different cleaning options to the operator and the risks of contaminating food subsequently processed
Verification: By visual inspection and examination of documentation
C.2 External influences on electrical equipment
Many food machines are exposed to humid environments and wet cleaning methods which increase the risk from electrical shock
The designer shall employ safeguarding strategies such as:
Ensuring the possibility of impact on electrical equipment from direct (or indirect) water jets is minimised as far as possible
Verification: By functional test and examination of documentation
C.3 Restoration of energy supply after an interruption
The hazards from mechanical parts unexpectedly restarting exist for all food machines where access is made into the danger zone
EN 60204-1 outlines the requirement for devices that prevent unexpected machine startups after power interruptions Given the high risk of mechanical hazards and frequent access to danger zones in food machinery, the use of these safety devices is essential.
C.4 Hazards due to cleaning substances
Cleaning processes and substances in food processing can pose significant hazards To mitigate risks associated with hazardous chemicals, such as concentrated caustic solutions, it is essential to implement enclosed systems, like Cleaning in Place (CIP) These systems ensure that operators are kept away from direct contact with harmful substances during handling, dilution, usage, and recovery.
C.5 Hazards from neglecting use of PPE
Certain personal protective equipment is required at food machines to deal with residual risks e.g.:
wearing gloves to clean and remove blades;
gloves to handle frozen products
The instructions to the user shall include appropriate information on the need to select and use suitable personal protective equipment
The designer must create machinery that minimizes airborne noise emissions to the lowest possible level, considering advancements in technology and effective noise reduction methods This should be achieved primarily at the source, followed by preventive measures such as enclosures, and finally through user instructions.
Verification: Test, or examination of documentation
! Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC
This European Standard was developed under a mandate from the European Commission and the European Free Trade Association to ensure compliance with the Essential Requirements of the New Approach Directive 2006/42/EC concerning machinery.