Grex G4.1 Sécurité Et Instructions D'utilisation page 14

Moreover, the innovative fastening system allows you to assemble and disassemble
the sunscreen without the need for any tools for ordinary maintenance and cleaning
operations.
VPS Operation
The VPS mechanism allows activating the sun screen by simply lowering it until it
partially covers the visor field of vision. In this way, the desired light transmittance
reduction is achieved. At any time, without operating the visor, the VPS can be deac-
tivated with a simple movement and easily lifted up to restore the normal conditions
of visibility and protection guaranteed by the approved helmet visor.
To deactivate the VPS, push the side slider completely downwards (Fig. 8 A).
To activate the VPS, push the side slider completely upwards (Fig. 8 B).
Precautions for Use
The current approval standards (ECE22-05) state that the visor minimum light tran-
smittance levels must be greater than 80% when riding at night and not less than
50% when riding during the day. For this reason, when riding during the day under
particularly bright weather conditions, e.g. very strong sunlight caused by high inten-
sity and/or incidence of the sunbeams, the use of sunglasses - which have a tran-
smittance much lower than 50% - turns out to be advisable, if not absolutely neces-
sary, to reduce eye fatigue on long trips. Sunglasses also reduce the risk of direct
dazzling as opposed to the use of mere approved helmet visor. However, the use of
sunglasses makes it difficult to perform emergency manoeuvres when the maximum
visibility range of the visor must be quickly restored. Just think, for example, of what
happens when you enter a tunnel or when unexpected changes in environmental bri-
ghtness occur. Thanks to its operating mechanism, the VPS makes these operations
much easier.
WARNING
- Use the special slider to activate/deactivate the VPS; do not deactivate the VPS
by handling it directly
- The VPS can be used only during the day and under the environmental condi-
tions described before.
- At night and/or in poor visibility conditions, the VPS must be deactivated.
- Always check that the VPS is properly positioned according to the different
weather/environmental conditions and/or to the above mentioned recommen-
dations for use.
- We recommend using the VPS only and solely together with the approved stan-
dard visor, which has a transmittance value greater than 80%.
- The VPS does not replace the protection guaranteed by the visor.
- Always make sure that the VPS is clean and that it is operating properly in order
to avoid scratches and/or anomalous wear on it every time it is activated.
- As for VPS and visor maintenance and cleaning operations, please refer to the
appropriate section in the helmet user's manual.
- The VPS scratch-resistant and fog-resistant treatment highly reduces fogging.
Protracted periods of adverse weather and/or environmental conditions
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