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16. Maintenance, servicing and repairs
a) Regular cleaning
The quadcopter is a very simply constructed aircraft . There are no mechanical parts that require lubrication or other
maintenance. Nevertheless, you should clean any dirt (woollen threads, hair, dust, etc.) off the quadcopter after each
flight.
Clean the exterior of the model and the remote control with a soft, dry cloth or brush. Never use abrasive cleaning
agents or chemical solutions, as these may damage the surface of the housing.
The propellers must move smoothly and motor shafts should not be bent or have any play in the bearing. Propellers
that are cracked or bent or from which small pieces have broken off must always be replaced.
b) Replacing the rotors
If a rotor is damaged by a fall or other impact, you should replace it immediately. This is also true if you notice fine
cracks or hairline cracks in the rotor. Due to the high rotational speed, these parts can become detached from dam-
aged rotors and lead to damage or endangerment of the environment.
To change a rotor, first remove the protective cap and then the screw in the middle of the rotor. Then carefully lift it
off the motor shaft.
Put on the new rotor. Make sure that the direction of rotation of
the rotor (see top side of the rotor, for example, "A") matches that
of the motor (see mark on the wing). Do this carefully and without
using too much force.
Warning!
Please be sure to observe the marking in Figure 24 and
always select the respective rotor (markings on the ro-
tor).
It is extremely important that a rotor marked "A" is
mounted on a wing that is also marked "A".
If this is done incorrectly (e.g. wing= A, rotor = B), the
model is not airworthy and it will lead to malfunctions
when the model is started! This will void the warranty/
guarantee.
Figure 24
