User Guide

2
Important safety instructions
• Please read this instruction manual carefully and
completely before using the headset.
• Make these this instruction manual easily accessible to all
users at all times.
Always include this instruction manual when passing the
headset on to third parties.
• During flight operation, do not use the headset for
telephone calls.
• With the NoiseGard active noise compensation switched
on, typical aircraft sounds (for example, those from
engines, propellers, warning alarms, etc.) may sound
different to you. Before operating any aircraft, make sure
that, with NoiseGard switched on, you can hear and
recognize these sounds. Set the volume to safe levels that
do not interfere with your ability to hear critical sounds,
especially warning alarms and sounds resulting from
malfunction.
• The headset is capable of producing sound pressure levels
exceeding 85
dB(A). In many countries 85 dB(A) is the
maximum legally permissible level for continuous noise
exposure during the working day. Exposure to sounds of
higher volume levels or for longer durations can
permanently damage your hearing.
• Never repair or attempt to repair a defective headset
yourself. Contact your Sennheiser partner or the
Sennheiser Service Department.
• Only replace those parts of the headset whose
replacement is described in this instruction manual. All
other parts of the headset must be replaced by your
Sennheiser partner.
• Protect the headset from wetness. Use only a slightly
damp cloth to clean the headset. For information on how
to clean the headset, contact your Sennheiser partner.