3M MT73H7-4D10EU - 50 Serie Manual De Instrucciones página 10

Failure to follow these instructions may result in serious injury
or death:
Listening to music or other audio communication may reduce
your situational awareness and ability to hear warning signals.
Stay alert and adjust the audio volume to the lowest acceptable
level. The audibility of warning signals at a specific workplace
may be impaired while using the entertainment facility.
Failure to follow these instructions may reduce the protection
provided by the earmuff and may result in hearing loss:
a. Research suggests that users may receive less noise
reduction than indicated by the attenuation value(s) on the
packaging, due to variation in fit, fitting skill, and motivation of
the user. Refer to your applicable regulations for guidance on
how to adjust label values and estimate attenuation. In addition,
3M strongly recommends fit testing of hearing protectors.
If the NRR is used to estimate typical workplace protection, 3M
recommends that the noise reduction value be reduced by 50%
or in accordance with applicable regulations.
b. Ensure the hearing protector is properly selected, fitted,
adjusted, and maintained. Improper fit of this device will reduce
its effectiveness in attenuating noise. Consult the enclosed
instructions for proper fit.
c. Inspect the hearing protector before each use. If damaged,
select an undamaged hearing protector or avoid the noisy
environment.
d. When additional personal protective equipment is necessary
(e.g. safety glasses, respirators, etc.), select flexible, low profile
temples or straps to minimize interference with the earmuff
cushion. Remove all other unnecessary articles (e.g. hair, hats,
jewelry, headphones, hygiene covers, etc.) that could interfere
with the seal of the earmuff cushion and reduce the protection
of the earmuff.
e. Do not bend or reshape the headband or neckband, and
ensure there is adequate force to hold the earmuffs firmly in
place.
f. Earmuffs, and in particular cushions, may deteriorate with
use and should be examined at frequent intervals for cracking
and leakage, for example. When used regularly, replace the
ear cushions and foam liners at least twice a year to maintain
consistent protection, hygiene, and comfort.
g. The output of the electrical audio circuit of this hearing
protector may exceed the daily limit sound level. Adjust the
audio volume to the lowest acceptable level.
h. If the requirements above are not adhered to, the protection
afforded by the earmuffs will be severely impaired.
EN 352 Safety Statements:
• The output of the level-dependent circuit of this hearing
protector may exceed the external sound level.
• The output of the level-dependent circuit of this hearing
protector may exceed the daily limit sound level.
• The fitting of hygiene covers to the cushions may affect the
acoustic performance of the earmuffs.
• Performance may deteriorate with battery usage. The typical
period of continuous use that can be expected from the
earmuff battery is approximately 8 – 13 hours.
• This product may be adversely affected by certain chemical
substances. Further information should be sought from the
manufacturer.
• These earmuffs are of large size range. Earmuffs complying
with EN 352-1 are of "medium size range" or "small size
range" or "large size range". "Medium size range" earmuffs
will fit the majority of wearers. "Small size range" or "large size
range" earmuffs are designed to fit wearers for whom "medium
size range" earmuffs are not suitable.
• These helmet mounted earmuffs are of "large size range".
Helmet mounted earmuffs complying with EN 352-3 are
of "medium size range" or "small size range" or "large size
range". "Medium size range" helmet mounted earmuffs are
designed to fit the majority of wearers. "Small size range" or
"large size range" helmet mounted earmuffs are designed to
fit wearers for whom "medium size range" helmet mounted
earmuffs are not suitable.
CAUTION:
• Always use product-specific 3M replacement parts. Use of
unauthorized replacement parts may reduce the protection
you receive from this product.
• Risk of explosion if battery is replaced by an incorrect type.
• With lithium-ion batteries, there is a risk of fire and burns. Do
not open, crush, heat above 55°C (131°F) (ACK081), 50°C
(122°F) (ACK082), or incinerate.
NOTE
• When worn according to the User Instructions, this hearing
protector helps reduce exposure to both continuous noises,
such as industrial noises and noises from vehicles and
aircraft, as well as very loud impulse noises, such as gunfire.
It is difficult to predict the required and/or actual hearing
protection obtained during exposure to impulse noises.
For gunfire, the weapon type, number of rounds fired,
proper selection, fit and use of hearing protection, proper
care of hearing protection, and other variables will impact
performance. To learn more about hearing protection for
impulse noise, visit www.3M.com/hearing.
• Although hearing protectors can be recommended for
protection against the harmful effects of impulsive noise, the
Noise Reduction Rating (NRR) is based on the attenuation of
continuous noise and may not be an accurate indicator of the
protection attainable against impulsive noise such as gunfire
(wording required by EPA).
• This earmuff is provided with level-dependent attenuation.
The wearer should check correct operation before use. If
distortion or failure is detected, the wearer should refer to the
manufacturer's advice for maintenance and replacement of
the battery.
• This earmuff is provided with electrical audio input. The
wearer should check correct operation before use. If
distortion or failure is detected, the wearer should refer to the
manufacturer's advice.
• This hearing protector limits the entertainment audio signal
to 82 dBA effective to the ear.
• In Canada, users of hard hats combined with earmuffs must
refer to CSA Standard Z94.1 on industrial protective headwear.
2
EN