Merlin
Instruction manual V1.4
Pag:
11
Failsafe:
Never fly with the failsafe set to “hold”.
It is strongly recommended that you setup your
radio system with the correct failsafe settings. In some countries is mandatory that the engine
stops in 2 seconds in the case of a failure of the radio link.
To program correctly the failsafe on your radio:
1)
Adjust the travel of the throttle channel from -100% (stop position) to +100% (full
power)
2)
Adjust the ecu to your radio as described above.
3)
Adjust the failsafe position of the throttle channel in your radio to a -125%.
If all is correctly adjusted, the ecu will stop the engine immediately when receive the STOP
signal (-100%), but if the signal received is Failsafe (-125%) the ecu will set Idle power during 2
seconds, and, if after these 2 seconds the Failsafe condition persist, will shutdown the engine.
Once you have the radio programmed, you can check it by setting the throttle to the different
positions, and then switching off the transmitter; in this case the “failsafe” reading should be
displayed.
There are many more parameters that can be modified in the ECU, but we have specifically
programmed your ecu with the optimum settings, further adjustment should not be required and
can only be carried out by Jets Munt SL or your authorized dealer.
Preparing the engine for running.
A suitable platform/table/workbench is now required to clamp the test stand onto. Make sure this
can be easily transported outside and weight enough to ensure it cannot be blown over by the
thrust of the engine
.
Select a clear area for running – keep clear of areas with loose leaves, sand or other debris that
could be picked up or drawn towards the intake. Ensure the fuel tank is position well clear of the
exhaust area and secured.
Important notes for kerostart engines.
PLEASE READ
The kerostart system used on this engine is a reliable and well tested system that produces very
smooth and trouble free starts.
However, extra care and attention must be paid when starting a kerostart engine.
The main difference between gas and kerosene is that in the case of a failed ignition, the gas
dissipates quickly on the air and don't keep inside the engine. Kerosene is liquid and, if
unburned, will pool inside the engine and stay there forever. The engine can hold a big quantity
of kerosene inside. This kerosene will be ignited on next successful start up and will be pushed to
the exhaust as soon as the airflow inside the engine is sufficient, then it will be ignited in the
exhaust, causing a hot start (in extreme cases a big fireball) that surely will not hurt the engine,
but can destroy the model.
To prevent this:
