What should be done to prevent clogging in the capillary tube?

To prevent clogging in the capillary tube, utilizing a filter strainer is essential. A filter strainer effectively captures and removes debris or contaminants present in the refrigerant before it enters the capillary tube. This is crucial because even small particles can obstruct the narrow diameter of the tube, leading to restricted flow and potential system inefficiencies or failures.

In a refrigeration system, particulates often accumulate due to wear and tear in components or as a result of system maintenance activities. The filter strainer serves as a preventive measure to ensure that only clean refrigerant circulates through the capillary tube, which helps maintain the system's overall efficiency and reliability.

Other methods, while they may seem beneficial in theory, do not directly address the fundamental issue of contaminants:

• Increasing refrigerant flow may temporarily alleviate flow restrictions but does not resolve the underlying problem of debris clogging the tube.

• Installing a dirt trap can help collect debris, but if contaminants are already present in the system, they may still reach the capillary tube before the dirt trap does.

• Maintaining higher pressure could lead to other complications in the system without addressing the root cause of the clogging, which is the debris present in the refrigerant.

By focusing on cleanliness through a filter strainer