fischertechnik PROFI, Инструкция по эксплуатации

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You can now use the plugs to re-close the air vents. Ensure that no air is trapped in the storage
cylinder. A small air bubble does not cause any problems and can be ignored.
If the fuel cell has not been used for a long time, wait for around 10 minutes to allow the
membrane to become suffi ciently impregnated.
Producing hydrogen and oxygen (electrolysis)
The fuel cell must be supplied with a direct voltage between 1.8 and 3 volt.
Caution! Material damage possible:
If the voltage is too high, it can destroy the fuel cell membrane. The fuel cell must
never be connected to a 9 V fi schertechnik power supply.
The solar module included in the Fuel Cell kit consists of two solar cells, which are connected in
series. Without load, the solar module supplies a maximum voltage of 1.0 V. As this voltage is
not enough for the electrolysis, you will need another solar module from the Profi Oeco Energy kit.
Connect the two solar modules (Item # 146142) in series and connect them to the fuel cell (see
Fig. 2 on page 3). Depending on the light intensity, the two solar modules now supply a voltage
of 1.6 – 2 volt.
Tip: Have you got the "Profi Oeco Tech" kit? Then you can use its solar module and the solar
module of the Fuel Cell kit. Connect them in series and connect everything to the fuel cell (1 x
solar module Item # 136239, 1x solar module Item # 146142).
Hydrogen and oxygen production begins as soon as the solar modules are illuminated with
suffi cient sunlight or a suitable light source. The gases are stored in the corresponding storage
cylinders. The water is pressed into the overfl ow chambers above the cylinders.
The fuel cell is completely "charged" when all the water from the hydrogen storage cylinder
(2) has been pressed into the overfl ow chamber above it (1). This process lasts around 15 – 60
minutes, depending on the light intensity.
You can now disconnect the fuel cell from the solar modules. This stops the production of hydro-
gen and oxygen.