What should I do if there is an unknown fault in the high and low temperature test chamber during the work? Below, our technology will provide you with a method to confirm the fault.
Combined with the control process of the high and low temperature test chamber to further confirm the cause of the failure, the high and low temperature test chamber has two sets of refrigeration units. One is the main unit and the other is the auxiliary unit. When the cooling rate is large, the two groups of units work at the same time. At the beginning of the temperature maintenance stage, the two groups of units still work at the same time.
After the temperature stabilizes initially, the auxiliary unit stops working, and the host group maintains the temperature stability. If the host group R23 leaks, the cooling effect of the host group will be insignificant. Since the two units are working at the same time during the cooling process, there is no phenomenon that the temperature is not stable, and the cooling rate is indicated to decrease. In the temperature maintenance stage, once the auxiliary unit stops working, the host group has no cooling effect.
The air in the high and low temperature test chamber will rise slowly. When the temperature rises to a certain level, the control system will start the auxiliary unit to cool down, lower the temperature to the set value (-55 ℃), and then the auxiliary unit stops working. Repeatedly, there will be malfunctions. So far, it has been confirmed that the cause of the production failure is the leakage of refrigerant R23 of the low-temperature (R23) class unit of the host group.
The above information hopes to help customers who use the high and low temperature test chamber. If there is a problem that they cannot solve, they can call our after-sales service phone.
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