19 Mechanical hazards
19.1 Moving and other dangerous parts shall, as far as is compatible with the use and mode of function
of the tool, be so arranged or enclosed that, in normal use, adequate protection against injury is provided.
Protective enclosures, covers, guards and the like shall possess adequate mechanical strength for their
intended purpose. They shall not be removable without the aid of a tool.
When used as protection of the working element, the guard shall have an easily accessible means of
accurate adjustment with the objective of minimizing access to the dangerous parts.
The use and adjustment of a guard shall not create other dangers, for example by reducing or obstructing
the operator’s view, by transferring heat, or causing other predictable hazards.
All working elements, including special features or attachments intended as part of the tool, shall be
secured so that they cannot create dangers during normal use by moving, or being released, out of the
normal working constraints of the tool.
NOTE 1 Such dangers might be caused by vibration, reversal of motion, or electric braking.
Compliance is checked by inspection, by the tests of clause 20 and by means of a test using the standard
test finger shown in Figure 1. It shall not be possible to touch dangerous moving parts with this finger.
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