8. STORAGe
Do not store the hearing protector at temperatures exceeding 130°F (+55°C),
for example on a dashboard or windowsill. Do not store the hearing protector
at temperatures below –4°F (–20°C).
NOTE: Remove the cord from the audio input before folding the headband.
(F:1) WRONG. All headband wires must be tucked-in fully before the
headband is folded.
(F:2) RIGHT. The ear cushions should lie flat against each other.
(F:3) WHEN DAMP. Turn the cups outward. Remove the ear cushions so that
the foam liners can dry. Reinstall them. See the Maintenance/Cleaning
section for further details.
Remove the batteries when storing the hearing protector for extended periods of time.
Check the functioning of the unit after replacing the batteries.
9. MAInTenAnCe/CLeAnInG
9:1 Cleaning
• Wash outside of earmuffs only. Use mild soap and lukewarm water.
Do not immerse in water.
• Do not clean with solvents such as alcohol or acetone, or with waterless
hand cleaners or products containing lanolin.
• Inspect earmuffs regularly for cracked or worn parts, especially the cushions.
Replace as needed. 3M recommends replacing foam liners and cushions at least
twice a year in order to maintain acceptable noise reduction, hygiene and comfort.
9:2 Removing/Replacing Outer Shells
See Figure D
9:3 Removing/Replacing ear Cushions
(E:1) Slide your fingers under the edge of the ear cushion and pull straight out.
(E:2) Insert a new ear cushion by pressing until it snaps into place.
10. SPARe PARTS/ACCeSSORIeS
HY68 SV Hygiene kit
Easy to use hygiene kit consists of two foam liners and snap-in ear cushions.
Cords for audio inputs (receiving only)
FL6H
J22 to 3.5 mm mono contact
FL6M
J22 to 2.5 mm mono contact
FL6N
J22 to 3.5 mm stereo contact
FL6CE 3.5 mm to 3.5 mm stereo
Audio cord for two-way communication (Type ICOM)
TAMT06 Cord with push-to-talk button (PTT) and microphone, J22 contact
Other spare parts/accessories
MT53/1 Boom microphone (G:1) for communication in extremely noisy environments
HY400
Headband padding. For an optimal fit on a smaller head, use HY400
headband padding. See Figure H.
7