DIY Chassis Classroom Pack

Before you start working with the Horizon DIY Chassis Kit/Classroom Pack take notice of the
following. Under certain circumstances, hydrogen can create an explosive gas
mixture. Though these devices in this box are designed such that they can be used as
described without danger, the advice below must be followed at all times:
• The fuel cell and hydrogen storage may not be operated without supervision of adult
person.
• Hydrogen (H2) is much lighter than air and thus rises rapidly. In conjunction with oxygen,
a gas mixture capable of explosion can form. A potentially explosive mixture arises for
hydrogen concentrations from 4.0 to 77.0% in air. Therefore, it holds that:
• The fuel cell must only be operated either outside or in sufficiently ventilated rooms.
• Oxygen (O2) is a strongly oxidizing gas. When this gas gets in contact with organic
substances (e.g. oil, grease) spontaneous combustion may occur at room temperature.
• Do not insert the cables into an electrical outlet.
• Do not connect the fuel cell or motor to other power sources.
• The removing and inserting of batteries is to be conducted by the adults only. Ensure to
respect the polarity.
• Non-rechargeable batteries are not to be recharged.
• Different types of batteries such as rechargable, alkline and standard batteries or new and
used batteries are not to be mixed and should be used separately.
• The battery pack cables are not to be inserted into an AC socket.
• The supply terminals of the battery pack are not to be short-circuited.
• The two spare red & black cables are not to be inserted into an AC socket.
• Discharged batteries are to be removed from the battery pack.
• Dispose of discharged batteries properly and without delay.
• Do not attach the battery wires directly to each other