The main reason why the high and low temperature test chamber can't drop the temperature may appear in the following six aspects, please check one by one.
1. Determine whether voltage is supplied to the compressor, such as whether the AC contactor connected to the compressor unit is closed? Is the wire connecting the compressor broken or disconnected or not connected well? And determine whether the voltage reaches the rated voltage of the compressor.
2. Judge the current of the compressor unit. The current must reach the rated current of the compressor. If the voltage is normal, the current does not meet the requirements, indicating the lack of refrigerant (refrigerant).
3. If it is a cascade unit, observe whether both units are running? If one unit is not in operation, it should be shut down immediately for inspection. Find out the cause of the compressor that is not working and analyze and solve it.
4. Observe whether the cooling fan of the condenser is working? Is the rotation of the cooling fan normal at work? During normal operation, the wind direction should be blowing outside.
5. Determine whether the compressor lacks refrigerant. Use a pressure gauge to observe whether the pressure after the compressor starts when the equipment is working is normal? Normally, the temperature should be very high and hot. If it is dual-unit refrigeration, it must be judged that the compressor lacks refrigerant.
6. Observe whether the circulating fan in the room is working normally. If it does not work, the evaporator cannot evaporate normally, so that the temperature cannot be lowered.
Once the reason why the equipment does not cool down is found, contact the manufacturer immediately, and send the maintenance personnel to solve the problem through the phone or the manufacturer.
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