Constant temperature and humidity test chambers are high-precision instruments with large volumes, making them inconvenient to move. Their complex electrical control systems often leave users unsure where to begin when malfunctions occur. To promptly identify the cause of faults and take appropriate measures, pay attention to the following aspects:
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If the temperature and humidity controller of the test chamber displays abnormal temperature readings, the first step is to inspect the over-temperature protection device in the control chamber. Check whether the pipelines in the test chamber have not been cleaned for an extended period, leading to poor water flow, and verify whether there is water in the water tank.
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Turn off the main power supply of the test chamber. Open the drain valve at the bottom of the heating tank to a position parallel to the pipeline, drain all the water inside, and clean any accumulated debris. Then, disconnect the silicone hose and rinse it thoroughly in water.
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After maintenance, reassemble the components in the reverse order of disassembly. Once reassembled, close the drain valve at the bottom of the humidification tank to a position perpendicular to the pipeline. Finally, turn on the main power supply at the rear of the equipment.
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Lastly, check whether the humidity relay is short-circuited. If the heating element is functioning properly, use an AC voltage meter to conduct further inspections.
