AC Motor Centrifugal Switch Repair: What You Should Know

Bright blue and yellow electric motor

The centrifugal switch is an important part of the AC motor performance at your company but, just like any mechanical device, it’s subject to a range of problems.

It’s useful to know how to troubleshoot your circuit when you encounter an issue with your centrifugal switch. What should you look out for and what should you do once you’ve found the source of the problem? At Sloan Electric, we’ve got all the information you need to get back to work as quickly as possible after your centrifugal switch failure.

What is a Centrifugal Switch?

Centrifugal switches can appear in many different motor systems, but they’re most commonly used within split-phase or single-phase AC motors to maintain their operating speed.

Though it’s easy to assume that a component designed to manage torque within an AC motor would require a range of complex mechanisms, the truth is that centrifugal switches are often very simple in design. In fact, they are usually made up of a few carefully-chosen weights that are connected to the motor shaft.

When the motor approaches the perfect operation speed, the centrifugal force of the weights overloads the spring that connects the switch to the shaft and a non-conductive, low-friction plate. The plate moves away from the electrical contacts at peak performance, which disconnects the power source from the starting winding. But what do you do if your centrifugal switch isn’t working properly?

Narrowing Down the Problem

Proper centrifugal switch repair begins with defining the issue within the AC motor.

Although AC motors can last for years before they need to be repaired or replaced, certain issues can lead to malfunction. If you notice that your AC motor is no longer performing consistently, then this is a sign that you may need a centrifugal switch repair.

To get a better idea of the problem, you can carry out a visual inspection of the windings. Once you’ve shut down your motor, you can safely take the following steps:

  • Check the switch components: Damage, wear, and corrosion to the weights, the non-conductive plate, or the springs can affect the function of the centrifugal switch.
  • Check the shaft: If the shaft is stuck or there is a loose component, the centrifugal switch will not be able to perform as normal.
  • Check your electrical connections: If your motor can’t start by itself, this could be a sign that you don’t have the right level of electrical power, which might not be a problem with the centrifugal motor.
  • Check performance: Use an ohmmeter while manually operating the centrifugal switch to imitate natural performance. If your motor is working as it should be, then you should notice the resistance on your ohmmeter beginning to decrease.

The information you find from your motor may allow you to take care of the problem right away with a quick component replacement or restart. However, if the issue seems more complex, it might be time to call in the experts for a centrifugal switch repair. The data you’ve collected may even help them fix the issue even faster.

Trust the Professionals

By getting in touch with experienced professionals like Sloan Electric, you can be sure that your centrifugal switch will be properly repaired, no matter what the problem is. We work carefully to avoid any risk to the performance of your motor, so you can feel confident about the results of our centrifugal switch repair.

Not only that, but you can reduce costs and unnecessary downtime. That’s because, if your AC motor repair costs exceed replacement costs, a new motor can be ordered and shipped to you directly, allowing you to get back to work as quickly as possible.

Contact Sloan Electric today for help and advice on getting the most out of your AC motor with a properly functioning centrifugal switch.

AC Motor Centrifugal Switch Repair: What You Should Know was last modified: January 18th, 2018 by admin

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Jerry is the owner of Sloan Electromechanical and is active in all aspects of the company. He is passionate about doing the work RIGHT and proposing the best product solution, hence the Sloan team is focused on aligning company values with client values. Please post your questions or comments and Jerry will respond. For a faster or confidential response, please contact Jerry directly 619-515-9691 or LinkedIn
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