Velleman KNS14 - Manual (Page 6)

1. The water levels do not drop when the gas outlet tubes on both sides of the fuel cell are unplugged.
Solution:
Check whether the holes on the wall of the inner cylinder are blocked. If so, turn the inner cylinder
untilwater enters the holes and fills up the inner cylinder.
2. The reversible fuel cell does not produce hydrogen and/or oxygen.
Solution 1:
Check whether the wires are appropriately connected, and whether there are any loose
connections.The fuel cell could be completely destroyed if the red wire of the battery pack isconnected
to the blackjack of the fuel cell.
Solution 2:
Make sure the batteries are inserted with the correct polarity.
Solution 3:
Replace the old batteries with new one in the battery pack.
3. The water electrolysis process slows down.
Solution 1:
Inject water to the oxygen side of the reversible fuel cell by using the syringe and wait for about
3minutes.
Solution 2:
Replace the old batteries with new one in the battery pack.
4. The motor does not run while there is hydrogen left in the inner container.
Solution:
Unplug the black pin of the short tube on the reversible fuel cell and quickly attach the pin back to the
tube to purge out impure gases. You should then see the motor beging to turn again.
5. Locking and Unlocking of WindPitch Rotor Assembly.
Solution:
Apply reasonable force to secure the layers so that the adjusted pitch can stay at the desired
position.DO NOT over tighten the layers, otherwise, you may have problems when you try to unlock the
individual layers. If you mistakenly lock the layers too tightly, you may use a rubber mat to assist you in
unlocking the layers. Wearing a rubber glove may also give you more friction and better grip in unlocking
the layers. If this does not succeed, try locking the second layer slightly in so as to separate the Rotor
Assembly Lock and Blade Assembly Lock layers. Afterwards, unlock the Rotor Assembly Lock layer and
then the Blade Assembly Lock layer. This double nut mechanism is to prevent the rotor from coming
apart when it is rotating at high speeds.
6. No hydrogen is produced using the wind turbine outdoors.
Solution:
If the wind speed is not sufficient electricity will not be created. Use a common desk fan with faster
wind speed to perform the electrolysis using the reversible fuel cell, or conduct the experiment under
sufficientwind conditions.
If you have any further issues contact [email protected]
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