Bose II manual Cleaning instructions, Clear ComfortTM cushion replacement and maintenance

Care and Maintenance

Cleaning instructions

Clean the headset exterior and cushions by wiping them with a moist cloth. Mild soap may be used.

CAUTION: Do not immerse the headset in water.

The headband cover is made from leather and sheepskin. If it becomes soiled, it may be removed and cleaned using mild soap. To remove the headband cover, peel apart the hook and loop fastener along the flap.

Clear ComfortTM cushion replacement and maintenance

To maintain good noise reduction, the Clear Comfort cushions in the headset should be replaced periodically; annual replacement is recommended. As the cushions wear, the silicone gel rings may spread apart, causing uneven thicknesses and gaps in coverage. This can lead to air leaks that result in reduced noise attenuation. Popping or fluttering sounds are also common when wearing worn cushions. If the gel leaks, replace the cushion. Frequent flying may require replacement more often.

To order a replacement cushion kit, call the Bose® Aviation Headset Service Department (page 23). Before ordering, remove the cushions and inspect the foam liners in the earcups. If you note significant deterioration, order foam liner replacements also.

To remove the cushion and foam liner

Note: Do not use a hard object such as a screwdriver, which can mar the earcup.

1.Unsnap the trim ring on one earcup by gently prying the edge loose with your fingers.

Figure 12

Unsnapping the trim ring from the earcup

Once the trim ring has popped loose, work your way around the earcups until the trim ring is completely free.

2.Lift out the old cushion. If you will be installing a new foam liner, proceed to the next section. Otherwise, skip to “To replace the cushion” (page 19).

18