What are the factors causing the slow cooling of the constant temperature and humidity test chamber, and how to deal with it?
Constant temperature and humidity test chamber can provide high temperature, low temperature, high humidity, low humidity environment, so temperature control is an important part of the constant temperature and humidity test chamber, temperature control is divided into temperature increase and cooling. In the process of use, we may encounter some temperature control failures, the following high day to talk about the constant temperature and humidity test chamber cooling slow is caused by what factors, how to deal with it?
1. Check whether the constant temperature and humidity test chamber is closed.
2, constant temperature and humidity test chamber working temperature is too high.
1) The working temperature of the test box is too high, and find ways to reduce the working temperature, such as installing air conditioners in the room or opening the lower partition with cooling fans, so as to achieve the actual effect of cooling.
2) Because the temperature can not be maintained, observe whether the refrigeration compressor can be started during the operation of the test box, and the compressor can be started during the operation of the environmental test equipment, indicating that the household appliance route from the main switching power supply to each compressor is normal, and there is no problem at the software level of the household appliance system.
3, the test box cooler dust is too much, clean the dust of the cooler blow clean.
4, the centrifugal fan does not turn: (Observe whether the centrifugal fan can be started during the operation of the constant temperature and humidity machine, such as the centrifugal fan can be started during the operation of the test box, indicating that the centrifugal fan is normal.)
5, refrigeration unit:
1) Check the constant temperature and humidity test chamber refrigeration unit, zuixin check the ultra-low temperature (R23) compressor exhaust pipe and breathing working pressure of the 2 groups of refrigeration units are slightly lower than the standard value, and the breathing working pressure is pumping time, indicating that the refrigeration dose of the main freezer unit is not enough.
2) Touch the exhaust pipe and breathing pipe of the R23 compressor of the host unit by hand, and find that the temperature of the exhaust pipe is not high, and the temperature of the breathing pipe is not low (no frost), which also indicates that the R23 refrigerant of the host unit is not enough.
6, large load:
1) Check whether the experimental product workpiece is induction electrification test, and measure the heat value of the product workpiece during induction electrification test.
2) If the calorific value is within 300W, there is no harm to the constant temperature and humidity machine, but the calorific value will make the temperature in the box slow and can not be set or not cooled.
The above are several factors that cause the temperature and humidity test chamber to cool down slowly, warm tips, the internal parts of the temperature and humidity test chamber instrument have a certain life period, in order to continue to use the instrument safely, please carry out regular maintenance and maintenance.
1. Check whether the constant temperature and humidity test chamber is closed.
2, constant temperature and humidity test chamber working temperature is too high.
1) The working temperature of the test box is too high, and find ways to reduce the working temperature, such as installing air conditioners in the room or opening the lower partition with cooling fans, so as to achieve the actual effect of cooling.
2) Because the temperature can not be maintained, observe whether the refrigeration compressor can be started during the operation of the test box, and the compressor can be started during the operation of the environmental test equipment, indicating that the household appliance route from the main switching power supply to each compressor is normal, and there is no problem at the software level of the household appliance system.
3, the test box cooler dust is too much, clean the dust of the cooler blow clean.
4, the centrifugal fan does not turn: (Observe whether the centrifugal fan can be started during the operation of the constant temperature and humidity machine, such as the centrifugal fan can be started during the operation of the test box, indicating that the centrifugal fan is normal.)
5, refrigeration unit:
1) Check the constant temperature and humidity test chamber refrigeration unit, zuixin check the ultra-low temperature (R23) compressor exhaust pipe and breathing working pressure of the 2 groups of refrigeration units are slightly lower than the standard value, and the breathing working pressure is pumping time, indicating that the refrigeration dose of the main freezer unit is not enough.
2) Touch the exhaust pipe and breathing pipe of the R23 compressor of the host unit by hand, and find that the temperature of the exhaust pipe is not high, and the temperature of the breathing pipe is not low (no frost), which also indicates that the R23 refrigerant of the host unit is not enough.
6, large load:
1) Check whether the experimental product workpiece is induction electrification test, and measure the heat value of the product workpiece during induction electrification test.
2) If the calorific value is within 300W, there is no harm to the constant temperature and humidity machine, but the calorific value will make the temperature in the box slow and can not be set or not cooled.
The above are several factors that cause the temperature and humidity test chamber to cool down slowly, warm tips, the internal parts of the temperature and humidity test chamber instrument have a certain life period, in order to continue to use the instrument safely, please carry out regular maintenance and maintenance.
