GRAUPNER SPEED Instructions De Montage page 13

Be sure to use only those parts included in the kit, together with other genuine
Graupner accessories and replacement parts as recommended expressly by
us. Even if you change a single component of the power system you can no
longer be sure that the system will work reliably, and such changes also
invalidate your guarantee.
Use only matching polarised connectors. All high-current cables and
connectors must be insulated carefully to eliminate the risk of short-circuit;
this also includes the flight battery if you assemble the pack yourself. Never
combine plugs and sockets of different types, e.g. gold-contact with tin-
contact, as such connections are never reliable in the long-term.
If you are using a motor switch or speed controller with an integral receiver
power supply (BEC system), be sure to use only Graupner gold-contact
connectors.
Avoid short circuits and reverse polarity at all times.
The high energy density of NC batteries involves a permanent danger of fire
and even explosion.
A radio-controlled model aircraft can only work properly and fulfil your
expectations if it is built very carefully, and in accordance with the building
instructions. If you wish to avoid injuring people and damaging property it is
essential to be careful and painstaking at all stages of building and operating
your model. Nobody would climb into a full-size aircraft and try to fly it without
completing a course of training first. Model flying is just such a skill, and has
to be learned in exactly the same way.
However, as manufacturers we have no means of influencing the way you build and
operate your RC model aircraft, and for this reason we can do no more than point out
the hazards expressly. We accept no further liability.
If you need help, please enlist the aid of an experienced modeller, join a model
club or enrol at a model flying training school. Model shops and the specialist
model press are also good sources of information. The best course is always
to join a club and fly at the approved model flying site.
You alone are responsible for the safe operation of your RC powered glider.
If you have queries concerning safety relating to RC model aircraft, please ask
your local model shop for advice, where the staff will be glad to help.
Adhesives and paints contain solvents which may be hazardous to health
under certain circumstances. Read and observe the notes and warnings
supplied by the manufacturer of these materials.
The operator of the model must be in full possession of his or her bodily and
mental faculties. As with car driving, operating a model aircraft under the
influence of alcohol or drugs is highly dangerous and not permissible under
any circumstances.
Make sure that all passers-by and onlookers are aware of the hazards involved
in the operation of your model. Remind them to keep a safe distance from the
model: at least 5 m behind the rotational plane of the propeller.
Keep a safe distance between your model and other people or objects at all
times. Never fly low over people or directly towards them.