Rock Helmets Dynamo Ansi, Instructions Manual, Page: 9 / 12

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perimeter. The straps must not cover the ears
and the buckle must not touch the chin. The
locked chin strap must not exert pressure on
the larynx. The helmet must be adjusted on
the head always in a horizontal position so that it
protects the forehead as well.
1. wear the helmet with the back size adjust
system open
2. lock the size adjust system by rotating the
back wheel
3. lock the chin strap buckle. A locking “click”
must be heard. Tighten the strap so that the
buckle is properly locked
4. adjust the chin strap
5. check the correct position of the helmet
and the correct locking of the systems (buckle
and back size adjust system).
If the helmet is worn correctly, it must not
move or rock side to side. The better the
helmet adjustment, the higher the level of
safety.
Check before use
Before use, check the state of the shell
and harness system, check the state of the
chin strap and stitching. Check if the size
adjustment system and chin strap buckle work
properly.
All components and accessories, if any, should
be visually inspected prior to each use for
signs of dents, cracks, penetration, and any
damage due to impact, rough treatment,
or wear that might reduce the degree of
protection originally provided. A helmet with
worn, damaged or defective parts should be
removed from service.
Changes to original components
The possible change or removal of original
components of the product can limit its safety
features. It is highly recommended that no
modifications or adjustments are made to the
equipment to add further components unless
explicitly advised so by the manufacturer in
writing. Apply colours, solvents, glue or sticky
labels only if they comply with the information
provided by the manufacturer.
Warning! The products must not be
exposed to dangerous conditions and
improper treatments.
Avoid contact with corrosive or aggressive
substances (such as: acids, bases, flux for
welding, oils, detergents). Avoid exposure to
high temperatures, for instance by leaving the
helmet inside a vehicle exposed to sunlight.
Avoid contact with heat or sparks. Do not sit
on the helmet and do not compress the helmet
in a sack. Avoid contact with sharp objects.
Avoid letting the helmet fall.
Temperature of use
The product (dry state) may be used
permanently in the temperature range of
-20°C to +50°C. The duration of the product
depends on the typology and frequency of
use and well as on external factors. Although
not used, the helmet is subject to ageing
due to the intensity of UV rays and weather
conditions.
LIFETIME OF THE HELMET
Normal use
Duration in case of normal and proper use,
without evident wear marks and under
optimal storage conditions: 10 years from
manufacture date.