Multiplex Profi TX Operating Instructions Manual page 22

Introduction
PROFI TX
Check the model regularly

Free movement and zero backlash of control surfaces and linkages.

Stability and flawless condition of pushrods, linkages, hinge joints, etc.

Carry out a visual check for fractures, cracks, possible shear points etc. on
the model itself, and in its components such as the RC and power systems.

Flawless condition and contact stability of cables and plug connections.

Absolutely essential: Examine the power supply and its wiring, including the
switch harness, and the external condition of the battery.
This entails regular maintenance of the batteries and periodic checks of the
voltage curve and capacity, employing a charge process and battery charger
suitable for the type of battery in use.
Pre-flight checks

Charge the transmitter, receiver and power system batteries carefully to full
capacity, and verify their state of charge at regular intervals.

Ensure that the correct model memory is active on the transmitter.

Carry out a range check (see section 2.6 "Range check" on page 46).

Check the function and effect of all primary and secondary control systems.
If you discover any irregularities, do not fly. Locate the problem, eliminate it, and
then check again.
When operating the model:

If you have never flown a radio-controlled model before, it is highly
recommended you consult an experienced model pilot when getting started.
A trainer (buddy-box) system is ideal for taking the first steps in learning to
fly.

Models should only be operated at suitable sites.

Never fly or drive over or towards spectators.

Do not carry out any high-risk flying or driving manoeuvres.

Know your limits: do not over-estimate your abilities and skills.

If you detect any sign of a problem or interference, land or cease operations
immediately.
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