1.6.1. Machinery maintenance

Adjustment and maintenance points must be located outside danger zones. It must be possible to carry out
adjustment, maintenance, repair, cleaning and servicing operations while machinery is at a standstill.
If one or more of the above conditions cannot be satisfied for technical reasons, measures must be taken to
ensure that these operations can be carried out safely (see section 1.2.5).
In the case of automated machinery and, where necessary, other machinery, a connecting device for mounting
diagnostic fault-finding equipment must be provided.
Automated machinery components which have to be changed frequently must be capable of being removed
and replaced easily and safely. Access to the components must enable these tasks to be carried out with the
necessary technical means in accordance with a specified operating method.
1.6.2. Access to operating positions and servicing points
Machinery must be designed and constructed in such a way as to allow access in safety to all areas where
intervention is necessary during operation, adjustment and maintenance of the machinery.
1.6.3. Isolation of energy sources
Machinery must be fitted with means to isolate it from all energy sources. Such isolators must be clearly identified.
They must be capable of being locked if reconnection could endanger persons. Isolators must also be
capable of being locked where an operator is unable, from any of the points to which he has access, to check
that the energy is still cut off.
In the case of machinery capable of being plugged into an electricity supply, removal of the plug is sufficient,
provided that the operator can check from any of the points to which he has access that the plug remains
After the energy is cut off, it must be possible to dissipate normally any energy remaining or stored in the
circuits of the machinery without risk to persons.
As an exception to the requirement laid down in the previous paragraphs, certain circuits may remain
connected to their energy sources in order, for example, to hold parts, to protect information, to light interiors,
etc. In this case, special steps must be taken to ensure operator safety.
1.6.4. Operator intervention
Machinery must be so designed, constructed and equipped that the need for operator intervention is limited.
If operator intervention cannot be avoided, it must be possible to carry it out easily and safely.
1.6.5. Cleaning of internal parts
The machinery must be designed and constructed in such a way that it is possible to clean internal parts
which have contained dangerous substances or preparations without entering them; any necessary unblocking
must also be possible from the outside. If it is impossible to avoid entering the machinery, it must be designed
and constructed in such a way as to allow cleaning to take place safely.