3M MT73H7-4D10EU - 50 Serie Manual De Instrucciones página 6

GB
• 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).
• In Canada, users of hard hats combined with earmuffs
must refer to CSA Standard Z94.1 on industrial protective
headwear.
• When selecting accessories to respiratory personal protec-
tive equipment, such as hard hat mounted hearing protec-
tion, please consult the NIOSH approval label or consult 3M
Technical Service for approved configurations.
• The attenuation ratings (NRR) were obtained with the
device powered off.
This product contains electrical and electronic compo-
nents and must not be disposed of using standard refuse col-
lection. Please consult local directives for disposal of electrical
and electronic equipment.
1. APPROVALS
3M Svenska AB hereby declares that this 3M™ PELTOR™
Headset is in compliance with the essential requirements and
other provisions set out in the appropriate directives. Thereby
they fulfil the requirements for CE marking.
Hereby, 3M Svenska AB declares that the radio equipment
type two-way radio is in compliance with Directive 2014/53/EU.
The full text of the EU declaration of conformity is available at
the following internet address: http://www.3M.com/PELTOR/doc.
The product has been tested and approved in accordance with
EN 352-1:2002 / EN 352-3:2002, EN 352-4:2001/A1:2005,
EN 352-6:2002, EN 352-8:2008.
Additional information can be obtained by contacting 3M in the
country of purchase or 3M Svenska AB Värnamo. For contact
information, see last pages of this user instruction.
Upon request, type in your part number. The part number of
your earmuffs can be found on the label of one cup as seen in
the picture below.
Notified Body Statement of Opinion offered by:
FIOH, Finnish Institute of Occupational Health,
Topeliuksenkatu 41 a A, FI-00250, Helsinki, Finland.
Notified body #0403.
FP3806_LiteCom_revb.indd 3
, 2. LABORATORY ATTENUATION
WARNING! 3M strongly recommends individual fit testing of
hearing protectors. If the NRR or SNR is used to estimate
typical workplace protection, 3M recommends that the noise
reduction value be reduced by 50% or in accordance with
applicable regulations.
The attenuation rating (SNR/NRR) was obtained with the
device powered off.
Explanation of attenuation tables:
A. EN 352-1/ EN 352-3/ EN 352-4
A:1 Frequency (Hz)
A:2 Mean attenuation (dB)
A:3 Standard deviation (dB)
A:4 Assumed protection value, APV (dB)
A:5
H = Hearing protection estimation for high
frequency sounds (ƒ ≥ 2000Hz).
M = Hearing protection estimation for medium
frequency sounds (500Hz < ƒ < 2000Hz).
L = Hearing protection estimation for low
frequency sounds (ƒ ≤ 500Hz).
A:6 Criterion Level
H = Criterion level for high-frequency noise
M = Criterion level for medium-frequency noise
L = Criterion level for low-frequency noise
*Criterion Levels chart is for level-dependent headsets,
EN 352-4:2001/A1:2005
B. USA Standard ANSI S3.19-1974
B:1 Frequency (Hz)
B:2 Mean Attenuation (dB)
B:3 Standard Deviation (dB)
B:4 Tested with 3M™ PELTOR™ Hard Hat Model H-700
The level of noise entering a person's ear, when hearing
protector is worn as directed, is closely approximated by the
difference between the A-weighted environmental noise level
and the NRR.
Example
1. The environmental noise level as measured at the ear is 92 dBA.
2. The NRR is 25 decibels (dB).
3. The level of noise entering the ear is approximately equal to
67 dB(A).
CAUTION: For noise environments dominated by frequencies
below 500 Hz the C-weighted environmental noise level should
be used.
C. Compatible Industrial Safety Helmets EN 352-3
These earmuffs should be fitted to, and used only with, the
industrial safety helmets listed in Table C. These earmuffs were
tested in combination with the following industrial safety
helmets, and may give different levels of protection if fitted to
different helmets.
When selecting accessories to respiratory personal protective
equipment, such as hard hat mounted hearing protection,
please consult the NIOSH approval label or consult 3M
Technical Service for approved configurations.
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