It is necessary to confirm whether the refrigeration unit is electrified for normal operation, and check whether the compressor can operate normally.
1. The compressor can run to check whether the refrigeration system lack of refrigerant, through the compressor suction and discharge pressure and operating current is normal to judge.
2. Compressor operation is normal in the case of slow cooling, need to confirm whether the box evaporator surface frost or ice is too thick, the solution is to raise the box temperature to about 60 ℃ and continue to run for half an hour, check the test holes, explosion-proof pressure relief port and so on whether it is well sealed.
3. Reduce the number of times the door is opened and the duration of each opening to prevent excessive water vapour outside the box into the box.
4. Check whether the set parameters in the controller have been changed, resulting in the refrigeration system in some temperature stages in the stop working stage.
