Will a Capacitor Start-Capacitor Run (CSCR) motor with an open run capacitor successfully start?

A Capacitor Start-Capacitor Run (CSCR) motor relies on both start and run capacitors to function properly. The start capacitor provides an initial boost of torque to help the motor start, while the run capacitor is crucial for maintaining efficient operation once the motor is running. If the run capacitor is open (i.e., not functional), the motor will not operate effectively after starting.

When discussing whether the motor can successfully start without the run capacitor, it is important to consider that while the start capacitor may provide the necessary torque to initiate movement, the absence of the run capacitor means that the motor will not run smoothly or efficiently. The motor's design is such that it requires the run capacitor for normal operation, which includes maintaining the proper phase shift for torque development.

In this scenario, without the run capacitor, the motor will typically struggle to stabilize and may not even achieve a full start, confirming that it is unable to function properly without this essential component. Hence, the conclusion that the motor would not successfully start or operate correctly without the run capacitor is accurate.