Generally, when users use high and low temperature test chambers, they use one low temperature constant test, high temperature constant test and temperature cycling test from low temperature to high temperature or from high temperature to low temperature.
Under these test methods, it is not allowed to turn on the refrigeration compressor in the high-temperature constant test, because during the high-temperature test, the high-temperature operating value is set on the instrument, the heating is working, and the working space is in a high-temperature operating state, cooling function. At this time, when the refrigeration compressor is turned on, the heat exchanger (evaporator) in the refrigeration system absorbs a large amount of heat, which is discharged into the compressor through the suction port of the compressor, causing the compressor to heat up high, resulting in overheating and Besdamage. In addition, with the cooling capacity, the heating capacity will increase, resulting in wasted energy.
However, there is one case where this is allowed open at high temperature For the compressor, so the cooling process from high temperature to low temperature, because at this time the low temperature value is set on the device, so the heater has been turned off, then the cooling function is turned on This time, the temperature drops quickly, and the load on the Compressor is not increased, the compressor is not damaged.
Therefore, according to different test needs, reasonable and correct use of the cooling function can protect the compressor and extend the life of the high and low temperature test chamber.