The solution to the abnormality of the three-chamber constant temperature and humidity test chamber

When the temperature and humidity controller of the three-chamber constant temperature and humidity test chamber shows abnormal humidity, we need to check the constant temperature and humidity test chamber. The inspection items are as follows:

1. Whether the pipeline in the machine room is too dirty, causing the water flow to be unsmooth

2. Check if there is water in the upper water tank, if there is no water, then check if there is water in the lower water tank

3. Check whether the water shortage and over-temperature protector in the control room is set at 150℃

4. Check whether the solid state relay of the humidity part is burned out and short-circuited. If the heater is burned out, please use the AC voltage range of the three-purpose meter.

  solution:

1. Please turn off the main power at the back of the three-chamber constant temperature and humidity test chamber, and then open the drain valve under the humidification barrel to a position parallel to the pipeline. When the water in the upper tank is all drained, use a wrench to Open the humidification bucket, remove the internal humidity caused by the humidity, then remove the silicone tube, scrub in water, and install it in the opposite direction according to the removal method after the maintenance is completed. After the installation is completed, the drain valve under the humidification bucket needs to be closed To a position perpendicular to the pipeline, and then turn on the main power at the back of the machine

2. There is no water in the upper and lower water tanks. Please 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 for the lower water tank is broken.

3. Please turn the under-water over-temperature protector to 150℃

4. Please replace the solid state relay in the humidity part (the solid state relay marked as H)