Overview
EN ISO 4254-6:2020/A11:2021 is a CEN amendment to EN ISO 4254-6:2020 - Agricultural machinery - Safety - Part 6: Sprayers and liquid fertilizer distributors. Published November 2021 (A11), this amendment revises Annex ZA to clarify the relationship between the standard and the essential requirements of Directive 2006/42/EC (Machinery Directive). Once cited in the EU Official Journal, compliance with the normative clauses gives a presumption of conformity with relevant Directive requirements. The document was prepared by CEN/TC 144 (secretariat: DIN) and implemented by national bodies (e.g., SIST in Slovenia).
Key topics and technical requirements
This amendment primarily updates the normative relationship to EU legislation, but the underlying standard (ISO 4254-6:2020) addresses safety aspects specific to sprayers and liquid fertilizer distributors. Key technical subjects covered include:
- Hazard identification and safety integration for sprayer design and use
- Controls and monitoring - requirements for reliable control systems and operator interfaces
- Filling, emptying and containment - measures to reduce emissions, spills and exposure during handling of pesticides and liquid fertilizers
- Emission and hazardous substance management - measures to limit operator and environmental exposure
- Maintenance and servicing - accessibility and instructions for safe maintenance
- Information, marking and instructions - required warnings, labeling and user documentation to communicate residual risks
- Specific operational risks such as loss of stability, moving parts, and noise (as referenced in the standard)
The Annex ZA in A11 maps clauses of the standard to specific Essential Requirements of Directive 2006/42/EC (e.g., design principles, control system reliability, materials, information and instructions).
Practical applications and users
This standard and its amendment are used to:
- Enable manufacturers and designers of agricultural sprayers and liquid fertilizer distributors to demonstrate conformity with EU machinery safety expectations
- Inform risk assessments, product specifications and safety-by-design for plant care equipment
- Support compliance documentation for CE marking when the standard is cited by the EU
- Guide conformity assessment bodies, testing laboratories and technical inspectors
- Help purchasing/specification teams, safety managers and service technicians understand required safety features and information
Operators and farm managers also benefit indirectly through improved machine safety, labeling and maintenance guidance.
Related standards
- EN ISO 4254 series (other parts) - broader guidance on agricultural machinery safety
- Directive 2006/42/EC - essential legal requirements that Annex ZA maps to
Keywords: EN ISO 4254-6:2020/A11:2021, sprayers, liquid fertilizer distributors, agricultural machinery safety, Annex ZA, Directive 2006/42/EC, CEN, safety requirements, pesticide application, maintenance, marking.