GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Modifications reserved. No liability for printing errors
12/2010
0062196
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The charge process must be supervised even if you are using a fully automatic
charger. Note the maximum permissible charge current printed on the pack or
individual cells, and do not exceed that value. Excessive charge currents can
cause NiMH cells to overheat. If the battery heats up to about 50°C when on
charge, the charge current must be switched off immediately. When NiMH cells
get hot, the pressure inside the cell case rises greatly. Every NiMH cell in a pack
is fitted with a pressure valve which is designed to prevent it exploding
dangerously in an emergency. However, the valves may be blocked or mal-
function for some other reason, which means that an explosion is always
possible if the cell overheats seriously.
5.
Warning
:
If you accidentally overcharge an NiMH pack, do not touch it! Switch off the
charge current and allow the pack to cool down naturally.
6.
Warning
:
It is essential to avoid short-circuits involving NiMH packs. The result is an
extremely high rate of discharge which heats up the battery immediately, and this
can cause cells to burst in the same way as an overheated pack. The explosion
itself represents a serious risk of injury, and any corrosive electrolyte which
escapes from the cell can cause chemical burns.
If electrolyte escapes from a cell, take great care to avoid it getting on your skin
or in your eyes. If this should happen, rinse immediately with copious quantities
of water and seek medical assistance.
7. Never solder a wire or anything else directly to the cell case, as this may damage
the pressure valve.
8.
Warning
:
Never dispose of faulty or exhausted NiMH batteries in a fire, as they may
explode. Don’t discard them in the household rubbish, as they constitute toxic
waste and require special treatment. Take them to your local toxic waste
collection point (ask your local council for details). It costs nothing to dispose of
exhausted cells properly, and helps preserve a clean environment, as most of the
materials can be recycled.
Notes on building and flying the ALPINA 3001 Champ ELEKTRO
Before you start construction:
RC system components and the control surface linkages must be installed at the ap-
propriate stage of construction, as it may be very difficult or even impossible to fit
them later.
When you are buying a radio control system it is important to ensure that the trans-
mitter and receiving system are designed for use with
model aircraft
, and are
approved by your national Post Office approvals authority. All RC units should
possess an FTZ series approval number.
Please remember that other radio systems and radio-frequency apparatus are also
permitted to operate in the frequency ranges used by model radio control equipment,
and there is no guarantee that your system will not suffer interference caused by
such apparatus.
If you are not sure whether this applies to you, contact your nearest Post Office
Telecommunications office. Your local model shop will also have this information.
