High and low temperature test chambers are one of the key industries in the ring test industry. It is a common problem to pay attention to the use of high and low temperature test chambers. Today, Beijing Yashilin Technical Service Department summarized the three common operational faults in the use of high and low temperature test chamber refrigeration systems for the feedback of users, for reference only.
1. The compressor does not move
First confirm whether the cooling button on the lower panel is pressed, then open the distribution box, use the multimeter to measure the resistance between the compressor power lines with reference to the electrical schematic. If there is resistance (actually the resistance of the compressor) and block If the values ​​are not much different, it can be judged that the compressor coil is intact; if the resistance values ​​are very different or not at all, there may be a short circuit or an open circuit of the coil. At the same time, it is also necessary to measure, hook the clamp meter to any one of the three power lines of the compressor, and set the gear position of the clamp meter to the current “500A†position, and set the temperature below the ambient temperature on the controller. The temperature, the machine is running, observe whether the contactor corresponding to the compressor has a suction, if it is not attracted, it may be a button problem. If there is a suction, immediately observe the value on the ammeter, and the current value is gradually decreasing. And drop below the rated current of the compressor. If the current is always large, it may be that the compressor is short of oil, the cylinder cannot be started, and the compressor needs to be replaced.
2. Do not cool down
Firstly, determine whether the cooling button on the panel is pressed. The ambient temperature of the high and low temperature test chamber should be between 5 °C and 28 °C. If the air-cooled condenser is used for a long time, the accumulated dust is too thick, and the condensation is cleaned. The dust on the device can be used (purge with a compressed air air gun).
Want to know more about the high and low temperature test chamber, please continue to pay attention to this site!
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