Silverline Ear Defenders SNR 27dB - Manual (Page 4)

Product Familiarisation
Ear Muffs
USER INFORMATION
Operating Instructions
• Position ear muff headband directly over the head, pull the
cups outward and position over your ears so that they fully
enclosed the ear and seal tightly against the head.
• Adjust headband to reduce the space between head and
band.
• For best results, remove all hair, and other objects, from
under the cushions. The entire cushion surface should press
firmly, but comfortably, against your head.
• Ear muffs, and their cushions, may deteriorate with use and
should be examined for cracking or other deformations.
Replace as necessary.
Maintenance
• Wash with mild soapy water. The foam liner should be
completely dry before reinserting into the cups.
• Store in cool dry storage.
SPECIFICATION
Attenuation values (Ear muff worn over the head)
EN ISO 4869-2 HML value: H=30 M=25 L=18
EN ISO 4869-2 SNR-value: SNR 27dB
WARNING
• Improper fit of this device will reduce its effectiveness to
reduce noise levels.
• Follow these instructions for proper fit.
• Ear Muffs can be recommended for protection against
the harmful effects of impulsive noise. The Standard Noise
Reduction (SNR) 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. Constant
or repetitive exposure to impulsive noise may lead to serious
injury, temporary or permanent deafness.
• These ear muffs, whilst designed to protect ears from injury,
do not provide unlimited protection.
• Do not alter or modify in any way.
Frequency Hz 125 250 500 1000 2000 4000 8000
Mean
Attenuation (dB)
15.7 17.1 25.6 32.7 34.3 31.8 32.6
Standard
Deviation (dB)
3.9 1.7 3.2 3.2 3.0 2.9 3.9
Assumed
Protection Value
(dB)
11.8 15.4 22.4 29.5 31.3 28.9 28.7
Tested according to EN352-1:2002