GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
23
Keine Haftung für Druckfehler. Technische Änderungen vorbehalten! ID# 0060046
01/2009
including RC components, control surface horns etc. Everything must be properly located and firmly secured.
Check for possible damage, and do not fly your model unless you are confident that everything is in perfect
order.
Whenever you are holding the model, make sure that you are standing on a safe surface and cannot slip. Wear
shoes with high-grip soles, such as trainers.
Satisfy yourself that your frequency is vacant before you switch on. Radio interference caused by unknown
sources can occur at any time without warning. If this should happen, your model will be uncontrollable and
completely unpredictable. Never leave your radio control system unguarded, as other people might pick it up
and try to use it.
If you are to fly your model safely and avoid problems, it is essential that you are aware of its position and
attitude throughout each flight - so don’t let it fly too far away! If you detect a control problem or interference
during a flight, immediately land the model to prevent a potential accident. Model aircraft must always give way
to full-size aircraft. Take-off and landing strips should be kept free of people and other obstacles.
Your RC system can only work reliably if the batteries are kept fully charged.
Never use hot, faulty or damaged batteries. It is important to observe the instructions supplied by the battery
manufacturer.
Before every flight ensure that all functions are working correctly, and carry out a range check.
Always switch on the transmitter first, then the receiving system. When switching off, reverse the order:
receiving system first, then the transmitter.
Check that the control surfaces work in the correct “sense”, i.e. they deflect in the direction which corresponds
to the movement of the stick.
After each session remove all the batteries from the model and store them in a discharged state (approx. 0.9 V
per cell) at a temperature of about +5° to +25°C. They must be kept out of the reach of children.
Please don’t misunderstand the purpose of these notes. We only want to make you aware of the many dangers
and hazards which can arise if you lack knowledge and experience, or work carelessly or irresponsibly.
Provided that you take reasonable care, model flying is a highly creative, instructive, enjoyable and relaxing
pastime.
Notes on the use of NiMH batteries
Application
All Graupner NiMH battery packs and single cells are designed exclusively for typical modelling applications in
model aircraft, boats and cars.
Charging
1. NiMH batteries must always be charged using a suitable standard charger or fast charger. For more
information see the main Graupner FS catalogue.
2. Before charging a NiMH pack, allow it to cool down to ambient temperature, i.e. approx. 20°C. The battery
should not be charged until just before use, as all NiMH cells have a natural tendency to self-discharge due
to their construction.
3. Warning:
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 malfunction for some
other reason, which means that an explosion is always possible if the cell overheats seriously.
4. 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.
5. 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
