Important User Information - 3M Peltor MT7H7A4610-NA User Manual

3.10.8 Menu return
If the user does not press any button for 7 seconds the headset will return to the first menu level (surround). This function can
be switched on or off in this menu. Press the + button (A:11) or – button (A:12) to choose the desired setting. A voice message
confirms the change.
3.10.9 Restore dealer defaults (resetting)
To restore the factory default settings, press and hold the PTT auxiliary (A:16) for 2 seconds. This is confirmed by the voice
message "restored factory defaults".
3.11 PTT (Push-to-talk)
Press and hold the PTT button (A:15) to transmit manually using the radio. When the radio is transmitting or receiving the but-
ton (A:10) will flash rapidly. PTT transmission works at all times, regardless of the BCLO and settings (see 3.8 VOX and 3.10.1
Busy channel lockout).

4. IMPORTANT USER INFORMATION

It is recommended that the wearer ensure that:
• The ear-muffs are fitted, adjusted and maintained in accordance with the manufacturer's instructions.
• The ear-muffs are worn at all times in noisy surroundings.
• The ear-muffs are regularly inspected for serviceability.
Warning!
If the recommendations above are not adhered to, the protection afforded by the ear-muffs will be severely impaired.
• This product may be adversely affected by certain chemical substances. Further information should be sought from the
manufacturer.
• Ear-muffs, and in particular cushions, may deteriorate with use and should be examined at frequent intervals for cracking
and leakage, for example.
• The fitting of hygiene covers to the cushions may affect the acoustic performance of the earmuffs.
• This ear-muff 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 ear-muff 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.
• Follow the advice in this manual on maintaining and replacing batteries.
Warning! Performance may deteriorate with battery usage. The typical period of continuous use that can be expected
from the earmuff battery is 20 hours.
Warning! The output of the level-dependent circuit of this hearing protector may exceed the external sound level.
Warning! The output of the electrical audio circuit of this hearing protector may exceed the daily limit sound level.
5. MAINTENANCE (figure J)
5.1. Removing/replacing ear cushions
(J:1) Slide your fingers under the edge of the ear cushion and pull straight out.
(J:2) Insert a new ear cushion by pressing until it snaps into place (J:3).
5.2 Cleaning
Remove the ear cushions (A:5) and attenuation cushions (A:6) if you have been wearing the hearing protector for a long time or
if moisture has gathered inside the cups. Clean and disinfect the cups, headband and ear cushions regularly with soap and warm
water. Make sure the soap is known not to be harmful to the wearer. Allow the hearing protector to dry before you use it again.
Note! Do not immerse the hearing protector in water!
5.3 Storage and operating temperature
Remove the batteries before storing the product. Do not store the hearing protector at temperatures above +131°F (+55°C), (for
example on a dashboard, parcel shelf or window sill), or at temperatures below -40°F (–40°C). Do not use the hearing protector
at temperatures above +131°F (+55°C), or below -4°F (–20°C).
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