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9. Tighten the nuts alternately a little at a time
(max. 2.5 turns) until a gap of 4mm is left
between the acrylic plates.
Caution!
Caution!
Overtightening may damage the electrodes. We
recommend that the distance be checked by a
caliper. Should a caliper or similar instrument
not be available, tighten the nuts twice,
approximately half a turn each time.
10. Screw the fittings into the four holes in the
housing plates.
Operation of the Electrolyzer Cell
1. Obtain a small variable/adjustable DC power supply that can provide 0-5 V and 0-10 A.
2. Before connecting the power supply to the electrolyzer, set the max. voltage of the power
supply to 2.1 - 2.2 Volts (voltage limited mode). Ensure that the knob for electrical current is set
to 0 A before the electrolysis test. During the testing of the electrolyzer cell, it is suggested that
the user vary the current while limiting the voltage.
3. Ensure that the polarity of the connections from the power supply to the electrolyzer electrodes
is done correctly. The positive lead of the power supply needs to be connected to the anode side
electrode which has a red colored 2mm banana plug. The negative lead of the power supply
needs to be connected to the cathode side electrode which has a black colored 2 mm banana
plug.
4. After making the electrical connections, turn on the DC power supply. Slowly adjust the
electrical current value by turning the current knob of the power supply. Most power supplies
will provide readout values both for the voltage and current parameters. A multimeter can be
used to verify the voltage value at the terminals of the electrolyzer cell.
5. The maximum electrical current input value for the 1-Cell Rebuildable PEM Electrolyzer Kit is
approximately 5 Amps (if warmed water at a temperature of 36-39°C is used) and the user can
adjust the knob for the electrical current until 5 A is reached. If the cell voltage reaches to 2 V
before 5 A is achieved, stop and do not increase the current anymore.
6. With the use of room temperature de-ionized water or distilled water, 0-4 A can be achieved
before the cell voltage reaches 2 V. With warmed water that has a temperature range of 36-39°
C, 0-5 A can be achieved before the cell voltage reaches to 2 V.
