3
IMPACT
™
Sport
US
. FUNCTION
The Howard Leight IMPACT™ Sport / IMPACT™ Pro amplifies surrounding sounds like voices, machines and warning signals and yet allows you to
have a good hearing protection. Loud impulse sounds are effectively blocked out. The stereo microphones (3) ensure you to detect the direction of
incoming sounds and enhance your communication abilities.
. INSTRUCTIONS FOR USE
Open the battery lid (1). Insert the two enclosed 1,5 V AAA batteries. Make sure that the + and - poles are in the correct position. Ensure that the bat-
tery lid is closed completely.
1. Extend the headband before use (see illustrations on page 2).
2. Place the earcups over the ears with the microphones (3) in the forward position to obtain the best listening conditions (picture A).
3. Adjust the headband by moving it up and down in the side headbands (picture C).
4. The ear cushions should seal firmly against the head (picture A). For best results, remove all hair under the cushion. Noise reduction will be
adversely effected by anything that impairs the seal of the earmuff cushions against the head, such as thick spectacle frames, balaclavas, etc.
(picture B).
5. Turn on the volume control (2) and adjust to a pleasant listening level.
6. After automatic power-off (4 hours), turn the volume control off, wait 5 seconds, turn it on again to get another 4 hours of working time.
3. IMPORTANT USER INSTRUCTIONS
1. The earmuffs should be fitted, adjusted and maintained in accordance with the instructions.
2. The earmuffs should be worn at all times in noisy surroundings.
3. The earmuffs should be regularly inspected for serviceability.
4. The earmuffs should be cleaned and disinfected with soap and warm water. They must not be dipped into water.
5. Earmuffs and in particular cushions may deteriorate with use and should be examined at frequent intervals for signs of, for example, cracking or
sound leakage. Replacement cushions are available. For cushion replacement, just pull off the old ones and snap-in the new ones. For the order of
new ear cushions please see information about hygiene kit.
6. The fitting of hygiene covers to the cushions may affect the acoustic performance of the ear-muffs.
7. Before and after usage, store in a dry place. The temperature should not 55°C.
8. The product may be adversely affected by certain chemical substances. Further information should be sought from the manufacturer.
9. The earmuff is provided with electronic restoration of surrounding sound. The wearer should check the 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.
10. Warning – performance may deteriorate with battery usage. The typical period of continuous use that can be expected is 350 hours.
11. The output signal of the sound restoration circuit of this hearing protector does not exceed the values known to constitute a risk to hearing.
12. Warning – for lower external levels, the sound level under the muff can exceed the external level (amplification).
See “Sound restoration characteristics” graph below.
13. For the estimation of the effective attenuation of this earmuff, the additional noise emission by the sound amplification should be taken into
account. The estimated A-weighed noise level under the earmuff in passive mode should not be greater than 82 dB(A).
14. The microphone’s wind protector, which eliminates wind noise etc., should be kept clean and changed when necessary.
15. If the above-mentioned recommendations are not followed, the protection and function afforded by the earmuffs may be severely impaired.
5. BATTERY REPLACEMENT
Open the battery lid. Remove the old batteries. Insert new 1,5 V AAA-alkaline batteries into the battery compartment (1) in accordance with the
instructions inside the compartment. Ensure that the battery lid is closed completely. It is time to change the batteries when the sound reproduction is
weakened or impaired. New alkaline batteries provide approx. 350 hours’ operation.
6. APPROVAL
IMPACT™ Sport is tested and approved in accordance with ANSI S3.19-1974 Standard at Howard Leight Industries, San Diego, USA.
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06-03-07 09.10.16