When the Refrigerated Heating Circulator works under normal conditions, the noise is very small.
You need to check the below reasons if there is big noise.
Excessive Wear of Internal Parts of Refrigerated Heating Circulator
Hydraulic pump valve is one of the parts that are easy to cause noise in the Refrigerated Heating Circulator.
There are servo spools and flow pistons that control the hydraulic pump. If these two are worn, it will cause pressure fluctuations, resulting in greater vibration and noise at the pump outlet.
When the Refrigerated Heating Circulator is working, the valve plate is worn or there are dirty deposits at the opening of the exhaust port will shorten the exhaust port, change the position of the exhaust port, and generate a lot of noise.
The Hydraulic pump of the Refrigerated Heating Circulator Enters the Air
If the liquid pump enters the air, it is easy to form air pockets, which will cause the oil to vibrate during transmission, thereby causing cavitation noise.
If the filter inlet of the hydraulic pump is blocked, and the viscosity of the oil is too high, it is easy to cause the vacuum of the water inlet to be too high.
After the air enters, the pipeline will fail and noise will be generated.
In addition, the oil level cannot be lower than the bottom line, otherwise, the drainage pipe may be emptied, making the high and low temperature integrated machine produce noise.