What might happen to OC protection on a compressor pump if the air filter is excessively dirty?

If the air filter is excessively dirty, it can restrict airflow to the compressor pump, leading to an increase in air pressure within the system. This situation can activate the overload current (OC) protection mechanism, which is designed to safeguard the compressor from operating under conditions that may cause overheating or mechanical failure. When the pressure surpasses the designed thresholds, it can cause excessive strain on the compressor motor, resulting in a trip of the OC protection to prevent potential damage.

This highlights the importance of maintaining clean air filters to ensure that the compressor operates effectively and within safe pressure limits. A dirty air filter doesn't just affect airflow but can lead to operational failures, hence the relevance of the overload current protection mechanism when faced with high pressure conditions caused by airflow restrictions.