If there is a problem of insufficient gas production pressure or decreased purity in the laboratory hydrogen generator, the following steps can be taken for fault diagnosis and troubleshooting:

Fault diagnosis and elimination of insufficient gas production pressure

Air leakage in the pneumatic system: Use a leak detector or soapy water to check all connections, gaskets, and internal pneumatic joints. If bubbles are found, it indicates a leak. The connection should be tightened or damaged seals replaced.

Filter or filter cover not tightened: Check if the filter and cover are tightened. If they are loose, tighten them to the appropriate position.

Leakage or damage of electrolytic cell: If there is leakage or physical damage (such as cracks or corrosion) in the electrolytic cell, it will lead to insufficient gas production pressure. Contact the manufacturer to replace the electrolytic cell.

Pressure switch damage: If the hydrogen generator continues to produce hydrogen after reaching the set pressure, it may be due to a damaged pressure switch. Check if the pressure switch is working properly, and replace it with a new one if there is a problem.

Fault diagnosis and elimination of hydrogen purity decline

Water quality issue: If the water quality does not meet the requirements (such as containing a large amount of impurities such as chloride ions and iron ions), it will affect the electrode reaction and lead to a decrease in hydrogen purity. The water source should be changed, deionized water or distilled water should be used, and the electrolyte should be replaced regularly.

Filter or desiccant failure: Filter or desiccant failure can lead to an increase in impurity content in hydrogen gas. The filter or desiccant should be replaced to ensure the purity of hydrogen gas.

Accumulation or contamination of electrolytic cells: Accumulation or contamination of electrolytic cells can affect electrolysis efficiency and lead to a decrease in hydrogen purity. The electrolytic cell should be cleaned regularly and replaced if necessary.