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15
ACCUPACK OPERATION
Ǡ When the accupack becomes weak (noise interference and sound distortion
are sure signs of a weak accupack), switch off the receiver and recharge the
accupack. (If necessary, use a second accupack to listen while the first
accupack is being recharged.)
Ǡ Recharge the accupack immediately when it is flat. If the accupack is flat but
is left in the switched on receiver, this reduces the service life of the accupack
(“total discharge”).
Ǡ As far as possible, use the full capacity of an accupack before you recharge
it. Frequent short discharge and recharge cycles prematurely reduce its
charging capacity.
CHARGING THE ACCUPACKS
The stethoset receivers are powered by BA 151 accupacks which can be
recharged either separately or in the receivers. Depending on the application,
there are different possibilities for recharging the accupacks.
The BA 151 can be recharged
Ǡ in the Set 150 and Set 300 transmitters,
Ǡ in the L 151-2 charger (suitable for charging two individual accupacks) or
Ǡ in the L 151-10 charging unit.
For commercial use, Sennheiser offers charging and transport/storage units
for recharging a larger number of stethoset receivers at a time.
The BA 151 accupack must be charged for 24 hours before first use! Please
refer to the corresponding section in the operating manual of your infra-red
transmission system or the operating manuals for the chargers.
ENVIRONMENT AND HEALTH
Devices powered by rechargeable accupacks are kind to the environment. This
energy source can be recharged many times. Conventional batteries, on the
other hand, must be disposed of as special waste after they have been used just
once. If an accupack should be defective, it is then recycled - the dealer who sold
it to you will take it back and will also supply you with a new, original
Sennheiser accupack. (Recycling methods differ in different countries).