Compressor runs ok and switches off when set point is reached. Motor trips breaker when attempting a restart at lower pressure point. Evaluated check valve, unloader valve, and pressure switch, and all are functioning properly. Both the run and start caps are fine. Since the motor starts with no tank pressure the centrifugal switch for the caps appears to be working.

Any other possible issues to consider?

⟐ Edited October 22, 2025 at 17:51 MST