Reasons for high condenser pressure in air-cooled condensers:
1. High ambient temperature or poor ventilation;
2. Dust and dirt accumulation on the condenser surface;
3. Overloading of the air dryer;
4. Air entering the refrigerant system;
5. Insufficient heat transfer area of the condenser;
6. Low airflow from the cooling fan;
7. Unsuitable installation location of the air dryer, such as being close to a heat source, direct sunlight, or insufficient distance between the front and back of the air dryer;
8. Improper setting or damage of the pressure switch controlling the fan;
9. Blockage in the refrigerant channel or components;
10. Overcharging of refrigerant leading to reduced heat transfer area.
Reasons for high condenser pressure in water-cooled condensers:
1. Insufficient cooling water volume or excessively high water temperature;
2. Relatively small heat transfer area of the condenser;
3. Air entering the refrigerant system, causing rupture of the evaporator copper tubes;
4. Relatively small condenser, and overcharging of refrigerant leading to reduced heat transfer area;
5. Long service life of the condenser, resulting in scale buildup on the water side surface of the copper tubes;
6. Small opening or damage of the automatic water flow control valve;
7. Refrigeration oil entering the refrigeration system;
8. Unreasonable cooling water piping, leading to poor cooling water return;
9. Blockage in the refrigerant channel or components such as the dryer filter, solenoid valve, or capillary tube;
10. Overloading of the air dryer, leading to increased evaporation pressure and increased condensation pressure.