SCHUBERTH F220 Handbuch Seite 22

F220
Service life of the visor
The service life of the visor is directly dependent on the nature of the stress to
which it is subjected. In the event of visible damage or impaired visibility (e.g. as
result of scratches, discoloration or dirt) the visor should be replaced as soon as
possible. We recommend using the visor for no more than 4 years at the most.
Checking the helmet's suitability for use
You should regularly check the helmet shell, lining, chinstrap and accessories
and especially after operational use such as in fi refi ghting, rescue and salvage
activities.
• Do not use the helmet once it has suffered damage; you should destroy it and
obtain a replacement.
• Even in the event of damage that is not immediately visible, for example after
light impact, there is a possibility that the helmet's material structure might
have been damaged. You can check whether this is the case by applying a
thumb pressure test. If you fi nd you can indent the shell surface at the point
of the impact or at any other point, the strength of the shell's structure has
been impaired and the helmet now has to be destroyed and replaced.
• You should also check the helmet's lacquer surface for damage. This is
because the special self-extinguishing structure of the lacquer plays an
important role for the helmet's thermal resistance. Damage to the lacquer
can therefore reduce the helmet's service life. Small surface scratches have
no negative effects on the helmet's protective function.
• In the case of helmet damage caused by strong heat or direct contact with
chemicals (in some instances recognisable from damage to or discoloration
of the helmet's lacquer surface) the helmet must on no account be used again.
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