Medicine refrigeration and heating cycle integrated machine is used in chemical reactor temperature control equipment In medicine, composite materials, chemical industry and other industries, the fully enclosed high and low temperature liquid circulation device is characterized by fast and simple temperature refrigeration and heating control
So, we are using the integrated medicine refrigeration and heating cycle machine, and suddenly found that it is not refrigerated or can not run, what is going on? What's a good way to deal with it? 1.
First observe whether the refrigeration compressor can be started during the operation of the integrated medical refrigeration and heating cycle machine, and the compressor can be started during the operation of the equipment, indicating that the electrical circuit from the main power supply to each compressor is normal, and there is no problem with the electrical system.
, continue to check the refrigeration system
First check the low-temperature stage compressors of the two sets of refrigeration units.
If the exhaust and suction pressures are lower than the normal values, and the suction pressure is in an evacuated state, it means that the amount of refrigerant in the main refrigeration unit is insufficient
Touch the exhaust and suction pipes of the compressor of the main unit by hand.
If the temperature of the exhaust pipe is not high, and the temperature of the suction pipe is not low, it also shows that the refrigerant of the main unit is lacking
If the temperature change cannot reach the set value, you can check the electrical system and troubleshoot one by one
If the temperature rises very slowly, it is necessary to check the air circulation system to see if the adjustment baffle of the air circulation is opened normally; otherwise, check whether the motor of the air circulation is running normally
If the temperature overshoot is severe, then it is necessary to tune the setting parameters of the PID
If the temperature rises directly, over-temperature protection, then the controller fails, and the control instrument must be replaced
Or whether it is caused by the use environment of the equipment, whether the ambient temperature of the equipment, and the placement position (the distance between the back of the box and the wall) can meet the requirements
After eliminating the above reasons, it is necessary to consider whether it is a fault in the refrigeration system, so it is necessary to ask the professional staff of the manufacturer for maintenance