Bedienungsanleitung Graupner MX12 (Seite 5 von 48) (Englisch)

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Safety notes 5

Safety notes

Disconnect all batteries and remove them from your mo-

del if you know you will not be using it in the near future.

Capacity and operating times

This rule applies to all forms of electrical power source:

battery capacity is reduced every time you charge it.

At low temperatures capacity is greatly reduced, i.e.

operating times are shorter in cold conditions.

Frequent charging, and / or the use of maintenance

programs, tends to cause a gradual reduction in battery

capacity. We recommend that you check the capacity of

all your rechargeable batteries at least every six months,

and replace them if their performance has fallen off

significantly.

Use only genuine GRAUPNER rechargeable batteries!

Suppressing electric motors

All conventional electric motors produce sparks between

commutator and brushes to a greater or lesser extent

depending on the motor type; the sparking generates

serious interference to the radio control system. In

electric-powered models every motor must therefore be

effectively suppressed.

Suppressor filters effectively eliminate such interference,

and should always be fitted. Please read the notes and

recommendations supplied by the motor manufacturer.

Refer to the main GRAUPNER FS catalogue for more

information on suppressor filters.

Servo suppressor filter for extension leads

Order No. 1040

Servo suppressor filters are required if you are obliged

to use long servo extension leads, as they eliminate the

danger of de-tuning the receiver. The filter is connected

directly to the receiver input.

In very difficult cases a second filter can be used, positi-

oned close to the servo.

Using electronic speed controllers

Electronic speed controllers must be chosen to suit the

size of electric motor which they will control. There is

always a danger of overloading and possibly damaging

the speed controller, but you can avoid this by ensuring

that the controller’s current-handling capacity is at least

half the motor’s maximum stall current.

Particular care is called for if you are using a „hot“ (i.e.

upgrade) motor, as any low-turn motor (small number of

turns on the winding) can draw many times its nominal

current when stalled, and the high current will wreck the

speed controller.

Electrical ignition systems

Ignition systems for internal combustion engines can

also produce interference which has an adverse effect

on the working of the radio control system.

Electrical ignition systems should always be powered by

a separate battery - not the receiver battery.

Be sure to use effectively suppressed spark plugs and

plug caps, and shielded ignition leads.

Keep the receiving system an adequate distance away

from the ignition system.

Caution:

Radio control systems may only be operated on the

frequency bands and spot frequencies approved in each

EU country. You will find information on frequencies in

the section entitled „Approved operating frequencies“.

It is prohibited to operate radio control systems on any

other frequency, and such misuse will be punished by

the relevant authorities.

Static charges

Lightning causes magnetic shock waves which can

interfere with the operation of a radio control transmit-

ter even if the thunderstorm actually occurs several

kilometres away. For this reason cease flying opera-

tions immediately when you notice an electrical storm

approaching.

Static charges through the transmitter aerial can be

life-threatening!

Care and maintenance

Don’t use cleaning agents, petrol, water or other

solvents to clean this equipment. If the case, the aerial

etc. gets dirty, simply wipe the surfaces clean with a soft

dry cloth.

Liability exclusion / Compensation

As manufacturers, we at GRAUPNER are not in a positi-

on to influence the way you install, operate and maintain

the radio control system components. For this reason

we are obliged to refute all liability for loss, damage

or costs which are incurred due to the incompetent or

incorrect use and operation of our products, or which

are connected with such operation in any way.

Unless otherwise prescribed by law, the obligation of the

GRAUPNER company to pay compensation is limited

to the invoice value of that quantity of GRAUPNER

products which was immediately and directly involved in

the event in which the damage occurred. This does not

apply if GRAUPNER is found to be subject to unlimited

liability according to binding legal regulation on account

of deliberate or gross negligence.

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