Reasons and solutions for abnormal display of the controller of the thermal shock test box

In daily work, the thermal shock test box will inevitably have problems of one kind or another. At this time, maintenance will be required. In order to facilitate the normal use of customers, the editor summarizes the problems existing in the work of the test equipment, such as equipment The controller displays the cause and solution for the exception. The details are as follows:

1. Check whether the overheat protection device (the temperature value is engraved on the black knob) is set at 150°C, and check whether the circulating motor in the thermal shock test box is damaged.
2. Check whether there is a short circuit of solid state relay in the temperature control device: if the heater is not burned out, use the AC voltage gear of the three-purpose meter, the voltage gear is 600 volts, the red and black light poles are placed on the AC side respectively, and the performance number is T . If the temperature control device is set at 0°C and the combustion temperature of the solid state relay is below 10V, the solid state relay is short-circuited.

3. Turn the over-temperature protector to the position of 150°C, or use the position where the temperature is increased by 30°C, and learn about the manufacturer’s customer service and maintenance department to replace the circulating motor.

Occasional failures of the thermal shock test chamber are not easy to catch, especially when the equipment itself is defective, it is difficult for product designers to find out the root cause. This article analyzes the reasons for the failure of the temperature controller of the test equipment in order to detect such occasional failures in time, thereby improving the reliability of the product. This equipment is an indispensable test equipment in the metal, plastic, rubber, electronics and other material industries. It is used to test material structures or composite materials, and can test chemical changes or physical damage caused by thermal expansion and cold shrinkage in a short time.

Post time: Jul-05-2022
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