28
To help minimize the chance of a hot start the following should be performed:
During the start-up, listen to the turbine sound to check for positive sound of ignition, verify by
looking into the exhaust to verify that the fuel is burning, or check for an increase in EGT
temperature by observing the display on the HDT.
If a small plume of white smoke is emitted from the exhaust it is an indication that the fuel is not
burning and may be an indication that the raw fuel is pooling inside of the turbine. In this case the
start sequence should be aborted immediately.
After a failed start, or whatever condition could cause fuel to be collected inside of the turbine (i.e.
extra priming), ALWAYS empty the turbine of raw unburnt fuel by rotating the turbine to point
nose down. Fuel will exit through the intake. Do not tilt upwards, due at the internal engine
construction the fuel cannot exit through exhaust.
Caution:
Fuel may keep burning for a long period of time inside the turbine. This situation usually
happens during an aborted start, for example, if the start-up sequence is aborted by the user or
automatically before the engine reaches the idle state. This condition can cause the excess fuel inside the
engine to keep burning and could destroy the engine or the model if left uncontrolled.
If a start-up sequence is not completed, always check for flames or excessive raw fuel inside the
turbine
.
If there are flames,
lower the trim and raise the throttle stick to full
to engage the starter motor to help
blow them out. In the case that the start-up procedure has been aborted due to a starter motor failure,
then it will be necessary to discharge the CO
2
fire extinguisher into the turbine intake. White smoke from
the turbine exhaust is a good indication that there is no fire inside of the turbine combustion chamber.
Note:
Do not be afraid to use the CO
2
fire extinguisher as required as this will not harm the turbine or void
the warranty.
6.3 Priming
Both main fuel and starting fuel lines require the purging of all air after initial installation. Take extra care
when priming the lines; ensure that excess fuel is not pumped into the turbine.
Reference section 5.12 Test menu to choose the fuel line you need to prime, i.e. Prime Fuel or Prime
Burner.
Click on right arrow to
“On” and left to “Off” to start/stop the pump manually. Please observe fuel line to
engine very carefully and push the off button to shutoff as soon as fuel reaches engine. Repeat the same
operation on the burner line by the appropriate menu entry (Prime Burner), except that after stopping the
fuel when it reaches the turbine case restart the prime for and additional three seconds to get the start
fuel down to the igniter’ If this step is not completed a series of “start bad” errors may occur until the fuel
reaches the igniter.
IMPORTANT:
The prime procedure should be done only to fill the fuel tubes and filters in the case of a first installation
or in case of disassembling of the fuel lines. Do not run the prime function so that the engine becomes
flooded by fuel, as this will cause an uncontrolled fire (Hot Start) at next startup.
Summary of Contents for Rabbit KS 100 SE Series
Page 1: ...Revision 0 2 February 2016 SE series ...
Page 14: ...13 4 Turbine System ...
Page 40: ...39 Appendix A Thrust Graph ...
Page 42: ...41 Appendix C Pipe Gaps ...