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UNAC Guide No. 2- July 2005
MD
Ann. 1
Type of risks considered
Evaluation criteria and solutions to be adopted
(Tick the box corresponding to the solution adopted)
[4] Impact and crushing in the area of opening (Figure 1, risk B).
F
Observe the safety distances illustrated (in the most prominent part of the leaf).
or:
F
Measure the forces of opening (by means of the
special instrument required by the standard EN
12445) as illustrated.
Check that the values measured by the instrument are
less than those indicated in the graph above.
Carry out the measurement at a height of 1000 mm
(or in the most prominent point of the leaf
N.B. The measurement should be repeated three
times and the average value considered.
F
If the values of the forces are higher, install a
protective device in accordance with the standard EN
12978 (for example a sensitive edge) and repeat the
measurement.
[5] Impact in the area of closure (Figure 1, risk C).
F
Install a pair of photocells (recommended height
500 mm) so as to sense the presence of the test
parallelepiped (height 700 mm) positioned as
illustrated.
N.B. The test specimen for presence sensing is a
parallelepiped (700 x 300 x 200 mm) with 3 faces with
a light and reflective surface and 3 faces with a dark
and opaque surface.
[6] Impact in the area of opening (Figure 1, risk B)
and in the area of closure (Figure 1, risk C)
F
To reduce further the possibility of impact in the
areas of movement of the gate, it is possible to install
a pair of photocells (recommended height 500 mm) so
as to sense the presence of the test parallelepiped
(height 700 mm) positioned as illustrated.
Motor
Photocell
Specimen for
presence sensing
Photocell
Photocell
Photocell
Photocell
Photocell
Specimen for
sensing presence
