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Safety  Notes

Please remember the engine is not a toy and has the potential to cause bodily harm to you and others if misused.
The Merlin 90K is a sophisticated piece of machinery and should be treated with a high level of safety when it is
in operation.

The following guidelines should be read carefully and adhered to.

1. 

Always keep a CO2 or similar fire extinguisher of at least 2Kg of CO2 contents close when starting and 

operating the engine

2. 

Always protect eyes and ears during the starting procedure.

3. 

Be aware of the extreme intake suction hazard, we advise the use of a suitable commercial wire mesh Foreign

   Object Damage guard to protect the engine intake. Ensure you have no loose items of clothing (ties, etc.) or
   equipment which can readily be sucked into the engine intake, even from adjacent to the engine.

4. 

Always operate your engine in open air away from confined spaces as the engine exhaust contains gases which

   can cause asphyxiation and nuisance smells.

5. 

Do not touch the engine whilst it is running. Turbines rotate at a very high rpm and the engine casing and 

exhaust can reach very high temperatures. Ensure anything affected by heat is kept well clear of the engine and 
exhaust during operation.

6. 

Never use the engine near to sources of flammable gases, liquids or materials.

7. 

Keep unauthorized persons, spectators, children and animals well away from the starting area (at least 30 ft or

   10 meters away).

8. 

Always handle turbine fuel and oil with care as they are highly flammable. Store them in appropriate labeled

   containers. Never dispose inappropriately. We recommend the use of suitable disposable protective gloves for
   the mixing of turbine oil/fuel.

Merlin  90  Mk2  Specifications

Dimensions:

Weight:

Nominal  thrust
@ 15C  and  sea  level:

Idle  RPM:

Idle  thrust  @ 40,000:

EGT  @ max  rpm:

Fuel  consumption:

Mas s  flow:

Pressure  ratio:

Fuel/oil:

Outer Diameter 90 mm; Length: 230 mm

1.010 grams (engine only including starter). 1250 gr including pump, ecu and fuel valves

Guaranteed 90N (9,18Kg-20.2lbf), typical 95N (21,2lbf) @ 152,000 rpm

40,000

4N (0.8lbf)

550-650 ºC

0.33 l/min at 90N

180g/sec

3.2 to 1

Ke 4% oil (3%-5% is OK) . Synthetic 2T motorcycle oil or turbine oil

3

Summary of Contents for Merlin 90K

Page 1: ...Merlin 90K Instruction Manual Version 1 0 2009...

Page 2: ...as system Gas Valve Engine installation Fuel system Fuel valve Fuel lter 11 13 ECU Engine Control Unit Set Up Aligning transmitter with ecu Preparing the engine for running First engine runs Priming t...

Page 3: ...ail Jets Munt S L Torrent d en Puig 31 08358 Arenys de Munt Barcelona Spain www jets munt com info jets munt com Fax 34 93 7950113 Legal and Disclaimer The engine design and the contents of this manua...

Page 4: ...y to re assemble without considerable dif culty and specialist equipment Simply slackening the spinner nut of the rotor will immediately lose the delicate balance condition without which the engine ma...

Page 5: ...touch the engine whilst it is running Turbines rotate at a very high rpm and the engine casing and exhaust can reach very high temperatures Ensure anything affected by heat is kept well clear of the e...

Page 6: ...ransmit incorrect rpm information to the ECU The fuel pump should be preferably mounted with the spindle in the vertical position with the motor uppermost In the event of any fuel seeping from the pum...

Page 7: ...e mounting provides an attachment for the temperature probe using the two nuts provided The temperature probe has been carefully shaped and installed at the factory to align with the small hole in the...

Page 8: ...tion of ow inside the lter is not important but should be always the same after rst use Do not run the engine without the fuel lter Finally connect the fuel pump the valves and the battery to the ecu...

Page 9: ...normally has the effect of producing the trim down function Check your radio manual for this before you start DO NOT use the digital trim in any case Aligning transmitter with ecu As the display does...

Page 10: ...trim and throttle stick are set to idle position on the transmitter Lower your throttle trim and the green LED will go out indicat ing correct reading of the transmitter engine shut off signal by the...

Page 11: ...e exhaust as soon as the airflow inside the engine is sufficient and will be ignited in the exhaust causing a hot start in extreme cases a big fireball that will not hurt the engine but can destroy th...

Page 12: ...n the exhaust temperature is of around 70 C the data terminal reading will change to SWITCHOVER during this phase the fuel will be routed to main injectors and the speed of the rotor will be progressi...

Page 13: ...the starter motor List of ECU message codes Here is a list of possible messages shown on the data terminal screen and their meaning TrimLow Indicates that the signal received from the transmitter corr...

Page 14: ...has dropped below a minimum Cause could be lack of fuel air bubbles problem with the batteries or defective RPM sensor The engine has been shutdown because the temperature has dropped below the minimu...

Page 15: ...ft turbine oils e g Aeroshell 500 Exxon 2380 Mobil JetOil II Mobil DTE Light turbine oil or 2T synthetic oil with a speci cation JASO FC or better 5 The fuel must be mixed with turbo oil in the ratio...

Page 16: ...om the ecu that can cause that a fully charged battery of 2000mAh be empty after 2 month Running Time Counter Using the second left hand button scroll through the menu s to the INFO menu This screen c...

Page 17: ...is insuf cient fuel or air bubble entering the engine during the initial start up 2 Low battery capacity 1 The ECU battery is empty recharge 2 The lters are dirty 1 The fuel level is low and or there...

Page 18: ...Jets Munt SL Torrent d en Puig 31 08358 Arenys de Munt Barcelona Spain Tel Fax 34 93 7950113 ww w jets munt com info jets munt com Copyright 2009 Jets Munt SL All Rights Reserved...

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