Small high and low temperature test chamber of the problem: primary observation The high and low temperature laboratory refrigeration compressor can be launched in the process of high and low temperature experiment box, and if the compressor of the high and low temperature box can be launched in the operation process, it means that the electrical line from the main power supply to each high and low temperature box compressor is normal. There is no problem in terms of electrical system.
small high and low temperature test When there is no problem with the electrical system of the box
a small high and low temperature test chamber of the host group The other is a coil, when the cooling rate is large, the two sets of units work together, and the two sets of units still work together at the beginning of the temperature. The temperature begins to stabilize, and the auxiliary unit will stop the operation, and the main unit will insist on temperature cooling and stability. If the host group R23 leaks, it will make the main unit's cooling effect is not large. Due to the process of cooling, the two units work together, so there is no temperature amusing, but indicates that the cooling rate is lowered. In the temperature insistence, once the auxiliary unit stops, the host group has no cooling effect, the air temperature in the high and low temperature experiment box will rise slowly, and when the temperature rises to a certain degree, the control system will launch a campaign to cool down, then The auxiliary unit has stopped working, so repeated, there will be a low temperature insisted on the problem.
Hereby, the cause of the high and low temperature box is the cooling of the low temperature (R23) unit of the main refrigerator unit. Division R23 leakage.
High and low temperature laboratory repair method: check the refrigeration system of high and low temperature experimental boxes, leak detector In combination with soapy water to check where the leakage is, if it is found to be a hot air bypass solenoid valveThe stem is broken, and the solenoid valve is replaced. If the leakage of other places, the leakage will be soldered with the oxygenation, and then the system is fully charged, and the system is operated.According to the above, it can be seen that the short temperature of the small high and low temperature laboratory tank is insisted, and the analysisanalyzed.And discriminating is basically easy to be difficult, first outside, and the principle and job process of familiarity and understanding of high-low temperature experimental boxes are analyzed and understood by the principle of high-low temperature experimental boxes.As long as you understand the working principle of the high and low temperature laboratory, you will have a wide range of problems that have emerged in the operation process in the operation process.