Summer is coming, the small problem of the delicate high and low temperature test chamber is also coming, that is, the overpressure alarm, this glitch has a great relationship with the installation environment of the equipment. The recommended temperature for the high and low temperature test chamber is about +20 degrees. ZUI is suitable. Of course, it is impossible for every customer to guarantee that the environment of the high and low temperature test chamber is so perfect, so the problem is not too big from +5 degrees to +35 degrees, but when the temperature is too high, then It is easy to cause overpressure.

The overpressure alarm caused by the condenser fan in the refrigeration system of the high and low temperature test chamber does not rotate or the aging speed is slow or the temperature sensing rod of the compressor fails. The refrigeration system of the high and low temperature test chamber is composed of a compressor, a condenser, an evaporator, a filter, an expansion valve or a cooling element such as a capillary tube and a liquid storage bottle. When the condensation fan is damaged or damaged, the pressure inside the compressor is instantaneous. Raise, and cause overpressure alarm; if the temperature sensing rod of the compressor fails, it will also cause an illusion alarm of overpressure. In the process of repairing the high and low temperature test chamber, there are several cases, especially in the northern region. see.

The lack of refrigerant in the cascade refrigeration system or the instantaneous damage of the compressor can cause overpressure in the refrigeration system. When one of the refrigerants in the cascade refrigeration system leaks, an alarm will occur at this time, but please do not blindly add the refrigerant. You should have a qualified qualified maintenance and repair organization to check whether the pipeline has Leakage points, if there is a step to fill the pressure, vacuuming and other steps, you can add the right amount of refrigerant of the same type. An overpressure alarm may also occur when one of the compressors is damaged in an instant.

How can we keep the ambient temperature of the high and low temperature test chambers better? Conditional customers can use air conditioning to make the high and low temperature test chambers in the air conditioning room ZUI suitable. However, no matter what place, it is necessary to keep the air circulation around the high and low temperature test chambers unobstructed. The distance between the front, back, left and right and other objects or walls is more than 60 cm, so that it can have better heat dissipation function. , it is necessary to install an exhaust pipe to direct the hot air directly to the outdoor, and often maintain and ensure the trouble-free operation of the exhaust motor.

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