What might indicate that a pneumatic filter is clogged?

The presence of reduced air flow or pressure is a clear indicator that a pneumatic filter may be clogged. A filter is designed to trap contaminants and particulates from the compressed air. Over time, as these particles accumulate, they can obstruct the airflow through the filter media. When airflow is restricted, the pressure downstream of the filter will drop, which can affect the overall performance of the pneumatic system. This situation often leads to inefficiencies and can cause components relying on proper airflow to malfunction.

Increased energy efficiency would typically be associated with a well-functioning system, so this would not correlate with a clogged filter. A lower temperature of exiting air might suggest reduced airflow but is not a direct indicator of a clogged filter; instead, it's more a byproduct. Consistent performance is indicative of a system operating normally, which would not imply any clogging issues within the filter. Therefore, reduced airflow or pressure is the most telling sign of a clogged pneumatic filter.