CE MARKING
A CE technical file is not simply a folder containing drawings, manuals and supplier documents. It should form a coherent body of evidence showing how the conformity of a machine has been assessed and how the different parts of the documentation relate to each other.
In practice, the most common problem is not that a manufacturer has no documentation at all. More often, documentation exists but different documents describe different machine versions, technical solutions or assumptions about risk.
Here are seven areas where manufacturers commonly run into problems.
1. The risk assessment no longer matches the actual machine
A risk assessment may formally exist while no longer reflecting the final machine.
During development, guards, control systems, components or operating methods may change. If the risk assessment is not updated at the same time, inconsistencies can appear between the machine, its technical documentation and its instructions.
For CE documentation, simply having a document is not enough. It must relate to the product that is actually being placed on the market.
2. Drawings and technical documents describe different versions
Machine designs often evolve several times before production is finalised.
Electrical diagrams, component lists, layouts and protective measures may all change. If older versions remain in the technical file, it may become unclear which configuration the compliance documentation actually refers to.
This becomes especially important when a manufacturer produces several variants of the same machine.
3. Supplier documentation is collected without checking the complete machine
Declarations and technical documents from component suppliers can form an important part of a technical file.
However, compliant components do not automatically make the complete machine compliant. The manufacturer still needs to consider how components interact, how they are integrated and whether the complete system introduces additional risks.
4. Tests and inspections are performed but poorly documented
A manufacturer may genuinely carry out functional checks and inspections while leaving very little trace of them in the documentation.
Later it may be difficult to establish what was checked, which machine or configuration was involved, when the check took place and what the result was.
For a technical file, evidence should be sufficiently clear to demonstrate what was actually done.
5. The instructions and risk assessment do not tell the same story
A residual risk may be identified in the risk assessment but not adequately reflected in the instructions.
The opposite can also happen: an important warning appears in the manual without a clear connection to the supporting technical documentation.
This is why CE documentation should be treated as one connected system rather than a collection of separate files.
6. The Declaration of Conformity is prepared too early
The EU Declaration of Conformity is one of the most visible CE documents, but it should reflect the outcome of the conformity assessment and the final machine configuration.
Preparing it before the rest of the documentation has been reviewed increases the risk of incorrect or inconsistent information being carried into the final declaration.
The declaration should not be the starting point of the CE process.
7. The technical file is assembled only when someone asks for it
This is one of the most common practical problems.
The machine may already be complete or supplied to a customer while relevant documentation is scattered across individual computers, email threads, supplier folders and previous project versions.
Reconstructing a technical file afterwards can be significantly more difficult than organising the documentation during the development and manufacturing process.
Consistency matters more than the number of documents
A strong CE technical file does not mean collecting as many documents as possible.
What matters is whether the documentation forms a coherent and traceable picture of the machine. Risk assessment, technical solutions, inspection evidence, instructions and conformity documentation should all refer to the same product.
This is also where generic templates often stop being useful.