After using the high and low temperature constant temperature and humidity test chamber for a period of time, it may face some large or small use problems, some are quality problems, and some are small details that need to be slightly adjusted. Here are some high and low temperature constants. Wet test chambers are prone to small problems every day, and the corresponding adjustment measures.
Fault one: high and low temperature constant temperature and humidity test chamber "high fever"
When working in a high-low temperature constant temperature and humidity test chamber, it is very hot to touch the outer casing by hand, especially in the summer when the ambient temperature is high. Sometimes the surface temperature is as high as 50 °C-60 °C, which is because the compressor runs continuously at high speed. The heat generated by the condenser can also reach a temperature of 30 ° C to 40 ° C (higher in summer) because the refrigeration system is performing heat exchange. These are normal phenomena.
Fault 2: high and low temperature constant temperature and humidity test chamber "singing"
Starting from the high and low temperature constant temperature and humidity test chamber compressor, until the test chamber compressor stops running for 1-2 minutes, the evaporator in the upper part of the test chamber emits a sound like "water ripple" and "咕噜". This sound is the “over-liquid sound†circulating in the refrigeration system when the test chamber is working. After the compressor stops working, the refrigerant will still flow for a while due to the large pressure difference.
Fault three: the compressor does not stop working
When the newly purchased high and low temperature constant temperature and humidity test chamber was started, the compressor worked for a long time without stopping. This is not a malfunction, because the inside and outside temperature of the test chamber that has just been activated is the same. To reduce the temperature inside the test chamber, the compressor must work continuously for 5-8 hours.
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