Merlin
Instruction manual V1.4
Pag:
19
FailSafe:
The engine has been shut down because of loss of the control signal from the
transmitter. After 0,5s of detecting a loss or invalid RC signal, the ecu sets engine power to idle,
and if after another 1,5seconds a valid signal is still not received the engine is shut down.
LowRPM:
The engine has been shut down because the RPM has dropped below a minimum.
Cause could be lack of fuel, air bubbles, problem with the batteries, or defective RPM sensor.
RCPwFail:
Lack of power from the radio receiver.
Other useful information and installation tips:
Fuel System
Always use appropriate containers to store fuel.
It is advisable to install an anti bubble system to the
fuel supply circuit. The simplest one is a felt filter
clunk installed into the fuel tank. This helps maintain
consistent fuel flow and greatly reduces the possibility
of air getting into the suction side of the pump circuit,
which could cause stoppages.
A BVM UAT is a best method of reducing the
possibility of air bubbles in the engine fuel
line. This is a very important aspect of the
operation of any turbine engine.
Use a appropriate adapter for the 6mm tube
output of the UAT to the 4mm in the inlet
side of the fuel pump, direction of fuel flow
is clearly shown at the top of the pump. The
clear 4mm tubing is used on the pressure
side of the pump. Clear tubing helps identify and locate any potential future problems with air
leaks.
The fuel pump and ECU can be mounted simply with a pair of tie wraps and/or Velcro.
When making any fuel line cuts use a sharp blade to make the cut squarely. The fuel filter
provided should be installed in an accessible place for regular inspection, close to the intake port
of the pump.
Fuel and Oil
1. Use CLEAN well filtered Jet A1 or kerosene fuel which is available from most airports, or
paraffin (K1) used for greenhouses available from most hardware stores. Diesel fuel can be used,
but startup time and acceleration could be worse than using kerosene. Diesel fuel vary
significantly between countries, you should test locally.
2. Ensure the fuel is clean and filtered at each stage of mixing and transfer to the model fuel
tank.
Please note the importance of using clean fuel. Failure to do so will result in blockages of the fine
fuel injectors in the engine or blockage of the engine lubrication system and subsequent bearing
damage
3. Ensure the fuel is free from moisture (water is heavier than fuel and will settle at the bottom
of the container).
