The Machinery Directive 2006/42/EC requires manufacturers to provide documentation in the official language or languages of every country where a machine is placed on the market. This is a legal obligation, not a recommendation. Missing or inadequate translations can block CE marking, trigger market surveillance action, and create liability exposure in the event of an incident.
Understanding exactly what the Directive requires, which documents need translating, and how that process should be managed is essential for any manufacturer, importer, or distributor operating in the European Economic Area.
What the Machinery Directive requires on translation
Article 5 and Annex I of Directive 2006/42/EC establish that the instructions for use must be provided in the official language or languages of the Member State where the machine is placed on the market. Equivalent requirements apply to the declaration of incorporation for partly completed machinery.
The Directive draws a clear distinction between two categories of documentation:
- Original instructions: drafted or verified by the manufacturer in the source language. These must carry the statement "Original instructions".
- Translation of the original instructions: any version in a different language. These must carry the statement "Translation of the original instructions" and, where practicable, be accompanied by the original instructions.
Harmonised standard EN ISO 20607:2019 complements the Directive with detailed guidance on the content and structure of machinery instructions for use, including minimum requirements that apply equally to translated versions.
Which documents require translation
The Directive is clear on the scope of the obligation, but in practice the documentary set goes beyond the basic instructions for use. Documents that typically require translation for Machinery Directive compliance include:
- Instructions for use, covering assembly, installation, adjustment, maintenance, and repair
- Maintenance manual for qualified technicians, where issued separately from the operator manual
- Declaration of Conformity (required in all cases for machinery)
- Declaration of Incorporation (for partly completed machinery)
- Safety data sheets for substances used in the machine, where applicable
- Labels and markings affixed to the machine, including safety warnings and pictograms with text
For guidance on how user manual translation should be structured and what quality levels are appropriate for different sections of a manual, that distinction between critical and non-critical content matters considerably in practice.
Quality requirements and controlled terminology
The Directive does not prescribe a mandatory translation process, but market surveillance authorities and notified bodies assess the quality of instructions in the context of incidents or complaints. A deficient translation is evidence of non-compliance.
Practical quality requirements include:
Technical accuracy: the terms used must correspond to the standardised nomenclature in the sector and the target language. Ambiguous terminology or direct calques from the source language compromise operator comprehension.
Terminological consistency: the same component, function, or procedure must be referred to by the same term throughout the document. Inconsistencies are a common source of operational error.
Compliance with technical writing standards: EN ISO 20607:2019 and EN 82079-1 (for instructions for use in general) establish drafting principles that apply to translated versions just as much as to original documents.
Traceability: a translated version must be identifiable in relation to the source version, with the revision number or edition date indicated. When the manufacturer updates the original instructions, translations must be updated accordingly.
The recommended process for documentation subject to regulatory requirements is the TEP workflow (translation, editing, proofreading), in which the document is translated by a specialist, reviewed by a second linguist with technical competence in the subject area, and checked before delivery.
Managing multilingual documentation
A machine placed on the market across several Member States requires documentation in as many languages as there are destination countries. For a manufacturer exporting to Germany, France, Spain, and Italy, that means four complete translations, each subject to the same accuracy requirements.
Effective management in this context involves:
- Translation memories (TM): these prevent retranslation of segments already approved in earlier versions of the document. The saving is significant for manuals that undergo frequent revision.
- Validated terminology glossaries: manufacturer-approved terms for each language reduce inconsistencies and accelerate review cycles.
- Integration with the product development cycle: translation should be part of the documentation development and update process, not a final step added after sign-off.
Where document volumes are high or timelines are tight, it may be appropriate to use post-editing of machine translation for lower-criticality sections, reserving the full TEP workflow for safety instructions and critical procedures.
How M21Global supports Machinery Directive compliance
M21Global has over 20 years of experience in technical translation for industrial machinery, with specialist teams covering machinery documentation, control systems, and industrial equipment. The company's Estratégica service tier applies the full TEP process with independent review and ISO 17100:2015 audited workflow, providing the documentary traceability that compliance processes and notified bodies may require.
For high-volume projects with standardised content, the IAH+ service combines machine translation with selective human review, reducing turnaround without compromising the critical sections of the manual. M21Global works across the main European language pairs relevant to machinery export: Portuguese, English, German, French, Spanish, and Italian.
If you are preparing technical documentation for CE marking or updating existing translations for a new machine edition, contact M21Global to review the options that best fit your volume and timeline.
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Frequently Asked Questions
Does the Machinery Directive 2006/42/EC require the full manual to be translated?
Yes. The Directive requires that the complete instructions for use be provided in the official language or languages of the country where the machine is placed on the market. It is not permissible to translate only the safety sections and leave the rest in the source language, except in very specific circumstances foreseen by the Directive itself.
What is the difference between 'original instructions' and 'translation of the original instructions'?
Original instructions are those drafted or verified by the manufacturer in the source language and must carry the statement "Original instructions". Any version in a different language is a translation and must state "Translation of the original instructions", accompanied by the original instructions wherever practicable.
Does the Declaration of Conformity also need to be translated?
Yes. The Declaration of Conformity must be provided in the language or languages of the Member State where the machine is placed on the market. Although its format is relatively standardised, the translation must be accurate and include all mandatory elements set out in Annex II of the Directive.
Is machine translation acceptable for Machinery Directive compliance?
The Directive does not prohibit machine translation, but it requires documentation to be accurate, clear, and complete. Unreviewed machine translation frequently introduces technical and terminological errors that can compromise compliance and create liability in the event of an accident.
What are the consequences of failing to provide translated instructions in the destination country's language?
Missing or non-compliant translations can prevent CE marking, lead to the machine being rejected by market surveillance authorities, and constitute evidence of non-compliance in the event of an incident, with civil and administrative consequences for the manufacturer or importer.
