VT80BL Instruction Manual
Page 12
JETS MUNT S.L
Prevent flood engine:
During the start-up listen to the engine sound to check for positive sound of
ignition, check looking from the exhaust that the kero is burning, or check for a increase in
exhaust temperature in the data terminal. A small plume of white smoke from the exhaust
means that the fuel is not burning. The fuel is pooling inside the engine. Abort immediately
the start.
Double check that the engine is not flooded. A extra security measure is to place a
manual valve between the last fuel tank and the pump intake line, to prevent that during the
process of filling the tanks or during storage, some fuel can arrive to the engine.
After a failed start, or whatever condition that could cause that fuel be collected
inside the engine (i.e. extra priming), ALWAYS empty the engine of fuel by tilting the
engine nose down. Fuel will exit trough intake. Do not tilt upwards; due at the internal engine
construction the fuel cannot exit trough exhaust.
Another big difference between gas start and liquid start is that the kerosene can keep
slowly burning during long time inside the engine. This situation usually happen during an
aborted start, the start-up sequence is aborted by the user or automatically before the
engine arrive to idle. This can cause that the kerosene inside the engine keep burning for
long time, and could destroy the engine or the model.
IF A STARTUP SEQUENCE IS NOT
COMPLETED, ALWAYS CHECK FOR FLAME INSIDE THE ENGINE
. If there is flame, then
set full throttle for over 3 seconds to engage the starter and blow out the flame. USE
SHORT BURSTS OF STARTER. Using the starter for long time can destroy the starter
motor. In the case that the start-up procedure has been aborted due at starter failure,
then it will be necessary to apply the CO2 fire extinguisher. A white smoke from the engine
is a good indication here; mean that there is no fire inside.
First engine runs
• Confirm your test stand is securely fixed to a bench or heavy table. Keep your ear
defenders within easy reach and a CO2 fire extinguisher handy.
VERY IMPORTANT ON
KEROSTART ENGINES.
• Fill the fuel tank. Do not forget to filter the fuel, and to mix the oil.
• Confirm all batteries are freshly charged and connected up.
• Check there is a temperature reading on the data terminal.
• Ensure the running area is clear of onlookers – especially the prohibited zone of a 10
metre radius 180° arc from engine centre around the rear.
• Verify that the fuel tube is full of fuel and purged of all air, if not, carry out the
fuel prime sequence as described here.
