Failsafe function, System check and operation, Ama safety code (excerpts) – Flyzone FLZA4032 User Manual

Page 16

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16

Failsafe Function

The included TR624 receiver has a failsafe feature which

engages in the event that the radio signal from the transmitter
somehow becomes interrupted. If radio contact is broken,
this safety feature causes the servos to automatically move
either to a certain position, or hold their last position to prevent
the model from moving in an erratic manner. Channels 1, 2,

4, 5, and 6 will enter a “hold” mode, whereby the servos will

lock in their last recognized position.

The servo connected to channel 3, normally being the throttle

control, will move to a pre-set position. The factory default
failsafe position for channel 3 is to move to 0% throttle.
Motor/prop movement should stop if the receiver loses signal
from the transmitter. The throttle servo’s failsafe position can
be manually re-set to any other position if desired, as follows:

IMPORTANT NOTE: Before manually resetting the
failsafe, make sure the servo reversing switches are in the
correct position for the application.

1.

Apply power to the Tx and Rx.

2a.

If using an ESC, do NOT arm the ESC. Do NOT

attempt to adjust the throttle’s failsafe position if the
ESC is armed.

2b.

If using a gas or glow powered engine, do NOT

attempt to adjust the throttle’s failsafe position while
the engine is operating.

3.

Move the Tx throttle stick to the desired position for

the throttle control to move if the Rx goes to failsafe.

4.

Press and hold the “Bind” button on the receiver, and

the Rx’s LED should blink twice. Release the Bind
button, and the receiver’s LED should turn on (stop
fl ashing). The Tx and Rx should now be bound, with
the throttle failsafe in the new position as set above.

NOTE: If you’re using an ESC which has a signal loss
feature, the pre-set failsafe position is irrelevant as the
signal loss feature will cease the throttle operation if the
signal is lost.

System Check and Operation

WARNING! During all pre-fl ight preparations with the
aircraft on the ground, make sure the throttle stick remains
at the minimum position and do not stand the Tx upright on
the ground. Carefully lay the Tx on its back on the ground to

prevent it from falling over and possibly dislodging the throttle
stick from the low position which would create a safety
hazard. Make sure all devices are properly mounted inside
the model, and all wiring connections are solid to prevent
them from easily becoming dislodged during normal fl ight.
It’s best to check the system with the propeller removed from
the aircraft.

1. Once all connections are made, check the general

operation of the radio and all other components before
attempting a fl ight.

2. Move the Tx throttle stick to the minimum (idle) position.

3. Turn on the Tx, and then the Rx.

4. Make sure all controls are operating in the proper direction.

If any servo is turning in the wrong direction, change the
position of the reversing switch for that particular channel.

5. With both sticks at center position, move the trim levers

for the aileron, elevator, and rudder channels so each
respective control surface is perfectly aligned with the
main surface. For example: When the aileron trim lever is
in the center position, it’s best that the trailing edge of the
aileron is aligned with the trailing edge of the wing itself

(not above or below the wing’s trailing edge).

6. Make sure that movements of the throttle stick result in

an equal adjustment of the throttle in the model. Confi rm
that when the throttle stick is at maximum position the
electronic speed control gives the appropriate indications

(LED and/or audible indicators) for full forward fl ight. When

the throttle stick is at minimum position, the electronic
speed control should give the appropriate indications for

“off” or no motor rotation.

7. Anytime power is to be removed from the radio system,

it’s important to shut down power in the aircraft fi rst.

Otherwise, the aircraft could become out of control and
cause a safety hazard! Move the throttle stick and throttle
trim lever to minimum position to stop the glow engine
or shut down the ESC. Once the propeller has stopped
rotating, shut off the ON/OFF power switch in the model,
and disconnect the power battery from the ESC in electric
airplanes. Then turn off the power switch in the Tx.

AMA Safety Code (Excerpts)

Read and abide by the following excerpts from the Academy
of Model Aeronautics Safety Code. For the complete Safety
Code refer to Model Aviation magazine, the AMA web site or
the Code that came with your AMA license.

GENERAL

1. I will not fly my model aircraft in sanctioned events, air shows,

or model flying demonstrations until it has been proven to
be airworthy by having been previously, successfully flight
tested.

2. I will not fly my model aircraft higher than approximately

400 feet within 3 miles of an airport without notifying the

airport operator. I will give right-of-way and avoid flying
in the proximity of full-scale aircraft. Where necessary,
an observer shall be utilized to supervise flying to avoid
having models fly in the proximity of full-scale aircraft.

3. Where established, I will abide by the safety rules for the

flying site I use, and I will not willfully and deliberately
fly my models in a careless, reckless and/or dangerous
manner.

5. I will not fly my model unless it is identified with my name

and address or AMA number, on or in the model. Note:

This does not apply to models while being flown indoors.

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