9
MAINTENANCE
Low Battery/Replacing Batteries
The OTTO NoizeBarrier TAC headset uses two AAA batteries to control situational awareness (talk-
through). Batteries are not required for radio communication. A low battery alert is emitted when
about 30 minutes of battery power remains. The alert is indicated by a sequence of three short chirps
at two-minute intervals.
Replace the batteries following the Battery Installation Instructions on page 6. Be sure the headset is
powered off before replacing the batteries.
NOTE: If the OTTO Multi-Port Hub PTT is used with the OTTO NoizeBarrier TAC headset situational
awareness (talk-through) will be powered by the radio if the headset batteries are depleted or not
installed.
Replacing the Ear Seals
(Figures 12-16)
The ear seals are mounted in a removable frame for easy replacement.
1. Remove the ear seal by sliding fingers under
the inside of the frame and pulling it straight
out with a firm motion.
2. The foam liner inside the ear seal will fall out.
Replace it with a new one.
3. Position a new ear seal over the ear cup.
Align the TOP of the ear seal with the TOP
label inside the ear cup.
4. Press firmly to squeeze the ear seal into the
cup until it snaps into place.
Figure 12
Figure 16
Figure 15
Figure 14
Figure 13
Cleaning the Headset
•
Use a soft cloth to remove dirt and debris from the headset.
•
Use a damp soft cloth to wipe down the ear seals.
•
DO NOT immerse the OTTO NoizeBarrier TAC headset in liquid for cleaning.
Storage
When not in use, store the headset in temperatures between -40° and +71°C.
