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Step 3. Put the lid back to the container. (see 1C)
Step 4. When the solution starts dripping out of the tube, close the purging valve by pushing the
switch to the left side. (see 1D)
1C
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Then connect the two crocodile clips that are attached to the motor to the two separate terminal
plates of the fuel cells current collector, which are both located on the upper part of the fuel cell
(see 1E&1F). Do not connect any clips to the welded collector also located on the fuel cell.
1D
If the system is connected properly the blade should begin to turn after about one minute. If the fan
does not start by itself, give it a light push with your finger. Since the reaction is slow, the fan can
run for several hours without purging. (see Experiment 3)
1E
1F
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