Graupner Hendheld RC 2.4 GHz No. of channels: 12 33124 Data Sheet

Product codes
33124
Page of 296
6
Safety notices
are always to be followed, this includes mandatory 
adherence to the length of charging time. Never leave 
batteries being charged unattended.
Never attempt to charge primary batteries (non-
rechargeable batteries) because they can explode.
All secondary batteries (rechargeable batteries) must 
be charged before every session. To avoid short circuit 
conditions, fi rst connect the charger cable's banana 
plugs, polarity correct, into the charger and thereafter 
connect the charger cable's plugs to the transmitter and 
receiver batteries. 
Disconnect all power sources from the model when it is 
not to be used for an extended period of time. 
Never attempt to use defective batteries, damaged 
batteries or mixed-type battery combinations as a single 
group. Do not use mixed combinations of old and new 
batteries or batteries of different manufacture.
Capacity and operating time
The rule: "capacity is reduced with every successive 
recharging", applies to all batteries. Internal resistance 
increases at low temperatures to further reduce capacity. 
As a consequence, the battery's ability to provide 
current and hold its voltage is reduced.
Frequent charging or the use of battery maintenance 
programs can also result in gradual loss of battery 
capacity. Therefore the capacity of batteries should be 
checked at regular intervals, not in excess of every six 
months, and replaced if performance is found to be 
signifi cantly defi cient.
Purchase only genuine Graupner batteries!
Interference suppression for electric motors
All conventional electric motors produce sparks between 
their collector and brushes. Depending on the type of 
motor involved, this may cause more or less interference 
with the functionality of the remote control system.
The electric motors of a properly built system should 
therefore have interference suppression features. 
For electric drive models it is particularly important 
that every one of its motors is provided with proper 
interference suppression. Interference fi lters extensively 
suppress such disturbances and should always be 
included. 
Follow the respective recommendations included in the 
motor's operating and installation notices.
For further details about interference fi lters, refer to the 
Graupner RC main catalog or in Internet at 
www.graupner.de.
Servo interference fi lters for extension cables
Order No. 1040
The servo interference fi lter is necessary when an 
extended-length servo cable is used. This fi lter is 
attached directly to the receiver output. In critical cases 
a second fi lter can be attached to the servo. 
Using electronic speed controllers
Choosing the right electronic controller is largely a 
matter of matching controller performance to the motor 
to be controlled.
In order to prevent an overload or damage to the speed 
controller, its current rating should be at least half of 
the maximum locked-rotor current draw of the motor to 
which it is connected.
Particular attention is appropriate for so-called "tuning 
motors". Because of their low-turns coils these motors 
can draw a multiple of their rated current in a locked-
rotor condition and this can lead to the destruction of the 
speed controller.
Electric ignition systems
Combustion motor ignition systems also produce 
interference that can negatively infl uence remote control 
functionality.
Always supply power to an electric ignition system from 
a separate, dedicated battery.
Use only interference-suppressed spark plugs, spark 
caps and shielded ignition leads.
Mount the receiver suffi ciently far away from ignition 
system components.
Static charges
A remote control system will be destroyed by the 
magnetic shock waves produced by a lightning strike - 
even if the storm is miles away. Therefore …
… stop fl ying right away if a storm is approaching. 
Static charging via the antenna also represents a 
lethal hazard.
Attention
In order to fulfi ll FCC HF emission requirements for 
• 
mobile transmitters, a distance of at least 20 cm 
must be maintained between this system's antenna 
and other persons when this system is operating. 
Operation of this system at a lesser distance is 
therefore not recommended. 
To avoid disturbance caused by the electrical 
• 
characteristics and emissions of other transmitters, 
keep at least a 20 cm distance from other 
transmitters.
Operation of the remote control system requires a 
• 
correct program setting for the given country in the 
transmitter unit. This is necessary for compliance with 
diverse regulations like FCC, ETSI, CE etc. Follow 
the respective instructions provided for this with the 
Safety notices