GRAUPNER JetCat P60 Instructions D'utilisation page 49

engine running, while an assistant holds the model securely. Read the instructions supplied with your radio
control system, and make sure that you observe the manufacturer's recommendations.
LIABILITY EXCLUSION
As manufacturers, we at Graupner are not in a position to influence the way you build and operate your
model and turbine, and we have no control over the methods you use to install, operate and maintain the
various components in the model aircraft. For this reason we are obliged to deny all liability for loss, damage
or costs which are incurred due to the incompetent or incorrect use and operation of our products, or which
are connected with such operation in any way. Unless otherwise prescribed by binding law, the obligation of
the Graupner company to pay compensation is excluded, regardless of the legal argument employed. This
applies to personal injury, death, damage to buildings, loss of turnover and business, interruption of business
or other direct and indirect consequent damages. In all circumstances our total liability is limited to the
amount which you actually paid for this turbine and/or the model.
BY OPERATING THIS MODEL YOU ASSUME FULL RESPONSIBILITY FOR YOUR ACTIONS.
It is important to understand that GRAUPNER is unable to monitor whether you keep to the instructions
contained in this operating manual regarding the construction, operation and maintenance of the aircraft, the
radio control system and turbine. For this reason we at GRAUPNER are unable to guarantee, or provide a
contractual agreement with any individual or company, that the model you have made will function correctly
and safely. You, as operator of the model, must rely upon your own expertise and judgement in acquiring
and operating this turbine and the model aircraft in which it is installed.
Turbines may damage your hearing; always wear ear protectors when operating these engines.
This engine must not be operated in a confined space.
When the turbine is running keep your hands at least 15 cm away from the area of the intake trumpet. The
engine develops a very powerful suction force in this area, which is perfectly capable of sucking a hand,
finger or other object into the spinning compressor in an instant. Keep this potential hazard in your mind at all
times!
When the jet engine is running, never look, reach or walk into the area of the hot exhaust gas efflux.
When running the jet engine always ensure that no persons, animals or movable objects are in the plane of
rotation of the engine (hazard zone!).
It is essential to keep a C0² fire extinguisher to hand at all times.
Before you run the engine, remove all loose objects from the area of the intake duct. This applies to cleaning
cloths, screws, nuts, cables and any other miscellaneous objects. Check in particular that you have not left
any small loose items in the inlet duct, such as waste materials from building the model, odd screws or even
sanding dust. Loose parts can very quickly enter the turbine and cause serious damage.
When installing and working around the turbine in the model, seal the intake and efflux openings of the
engine with wide parcel tape or similar, to avoid dust, scrap material and other detritus entering the turbine
accidentally.
Ensure that the fuel you use contains about 5% turbine oil.
Use only special, non-coking fully synthetic oils.
Castrol TTS fully synthetic oil is not suitable, as it is incompatible with turbine fuel.
Before starting the turbine always hold the model nose-up for a few seconds, and ascertain that there is no
fuel in the turbine.
Warning:
A model aircraft powered by a jet turbine engine is capable of much higher airspeeds than, for example, a
similar model with a ducted fan power system. Although the static thrust may be similar, the much higher
efflux velocity ensures that higher speeds are possible. The feasible airspeeds (> 400 km/hr) are usually
much higher than the permitted speed range of conventional model aircraft, and this leads to a serious risk of
control surface flutter, aerodynamic problems and mechanical overstressing of the airframe and the servos.
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