Desiccant air dryers are used to remove moisture from compressed air systems, preventing damage to pneumatic equipment and ensuring efficient operation. However, like any equipment, they can experience faults or issues. Some common faults of desiccant air dryers include:

Channeling: This occurs when the desiccant material in the dryer becomes unevenly distributed, allowing compressed air to flow through certain areas more quickly than others. This can reduce the effectiveness of the dryer and allow moisture to pass through.

Exhaust blockage: If the exhaust port of the dryer becomes blocked, it can cause pressure to build up within the dryer, leading to reduced efficiency and potentially causing damage to the equipment.

Desiccant saturation: Over time, the desiccant material in the dryer can become saturated with moisture and lose its effectiveness. This can lead to increased pressure drop and reduced efficiency.

Contamination: If foreign particles, such as oil or dirt, enter the dryer, they can contaminate the desiccant material and reduce its effectiveness. This can also cause damage to the equipment.

Incorrect sizing: If the desiccant air dryer is not properly sized for the application, it may not be able to remove enough moisture from the compressed air system, leading to issues with equipment performance and potentially causing damage.

Incorrect installation: If the dryer is not installed properly, it can lead to issues with performance and potential damage to the equipment. For example, if the dryer is not properly grounded, it can create a hazard for the operator.

It is important to regularly inspect and maintain desiccant air dryers to ensure they are functioning properly and prevent issues from occurring.