How to troubleshoot the high condensation pressure of the laser chiller?

Laser chillers are commonly used to cool lasers in cutting machines, marking machines, engraving machines, and other equipment. During use, some malfunctions may occur. How can we solve the problem of high condensation pressure in laser chillers? Firstly, we need to understand that stress is only a superficial phenomenon, and we need to deeply understand the laws of stress changes, in order to eliminate them one by one.

The possible reasons for the high condensation pressure are (common fault causes of air-cooled chillers and water-cooled chillers):
There is air or other incompressible gas in the refrigeration system;
The surface of the condenser is too small;
Excessive refrigerant filling (liquid recovery in the condenser);
The condensation pressure regulation is set to an excessively high pressure;
There is dirt on the surface of the condenser.

Exclusion method:
By using the recycling system to start and operate the system until it reaches operating temperature, remove the condenser, and if necessary, clean it again;
Replace with a larger condenser;
Recover the refrigerant until the condensation pressure is normal, and the sight glass must remain fully charged;
Set the correct pressure;
Clean the condenser.

The high-pressure alarm of the air-cooled chiller condenser (finned heat exchanger) usually requires analysis of the following aspects:
The fan motor or blades have defects or are too small;
The air flow to the condenser is restricted;
The ambient temperature is too high;
The airflow passing through the condenser is in the wrong direction;
There is a short circuit between the air side pressure of the condenser fan and the suction side.

Exclusion method:
Replace the engine or blades, or both;
Remove obstacles from the air inlet or move the condenser;
Forming a clean air inlet or moving the condenser;
Change the rotation direction of the fan motor, and the air in the condensing device must flow through the condenser and then into the compressor;
Install pipes that may be suitable for outdoor air.

Source: coolingstyle