WhisperGen PPS16 Installation and Commissioning Manual Rev: 080801
4
4. Pressurising the WhisperGen
Warning:
The WhisperGen is a pressurised device. Contact your distributor if disassembly of the core
engine is required.
Warning:
The maximum pressure is limited by a pressure relief valve. This valve shall not be adjusted. A
pressure relief valve is set at the factory, and any adjustment voids all warranties and can result
in an unsafe and/or unreliable machine.
Warning:
The filling pressures in this manual
only
apply to WhisperGens with manufacturing numbers
which begin with a 3 or a 7. The four digit manufacturing number is stamped on the metal plate
on the front of the electronics enclosure, (see figure below).
Warning:
Pressurising of the engine must be done through a bottle mounted pressure regulator, (not
supplied).
Warning:
The WhisperGen must be depressurised before transporting by aircraft.
The WhisperGen is pressurised with nitrogen gas.
To pressurise the WhisperGen:
1. Attach the filler hose to the filling valve. The filler hose is available from authorised
WhisperGen agents
2. Attach the filler hose to the Nitrogen bottle hose (not supplied), using the supplied ¼” BSP
Male or Female fittings.
2. Open the hose tap.
3. Increase the regulator pressure to pressurise slowly to 22 – 24 bar cold (25°C). This will
take 1 to 2 minutes.
Re-set the pressure to 28
±
0.5 bar during commissioning, when the engine is hot, (70°C).
To de-pressurise the engine for transporting:
1. Attach the filler hose to the filling valve. Do not connect to the Nitrogen bottle.
2. Open the tap and slowly degas to 4±.5 bar. This will take 1 to 2 minutes.
Pressure relief
valve
DO NOT
TOUCH
Pressure filling
valve
Electronics
Enclosure
7096
Manufacturing
number
