Solution to abnormal humidity in constant temperature and humidity testing machine!

The first step is to check whether there is water in the upper water tank of the constant temperature and humidity testing machine. If there is no water, then check whether there is water in the lower water tank; if there is no water in the upper and lower water tanks, you need to add water to the lower water tank to solve the problem. If there is no water in the upper water tank and there is water in the lower water tank, the water pump motor of the lower water tank is broken, and the manufacturer needs to be notified in time to come and repair it.

The second step is to check constant temperature and humidity testing machine whether the under-water over-temperature protector in the control room is set at 150 ℃; if not, turn the under-water over-temperature protector to 150 ℃;

The third step is to check constant temperature and humidity testing machine whether the solid state relay in the humidity part is short-circuited and burned: if the heater is not burned, the AC voltage range of the three-meter meter should be used, the voltage range should be set to 600 V, and the red and black bars should be placed in the line Set the humidity setting value of the humidity part to 0% for the solid state relay marked with H on both AC sides. At this time, the indicator light of the solid state relay in the humidity part will not light up. If the measured voltage value is not Change, maintaining below 10V means that the solid state relay is burned out, indicating a short-circuit state.

The fourth step, constant temperature and humidity testing machine if there are no faults found in the above three items, check whether the pipeline in the machine room is too dirty, causing the water flow to be blocked; if this happens, turn off the main power supply at the rear of the machine, and then turn on the drain under the humidification barrel Valve until it is parallel to the pipeline. After the water in the upper tank is drained, open the humidification bucket with a wrench to clean the internal scale, then pull out the silicone pipeline, scrub it in water, and follow the removal after maintenance. Method, put it back in the opposite direction. After the installation is complete, close the drain valve under the humidification barrel to a position perpendicular to the pipeline, and then turn on the main power at the back of the machine.