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My electric motor hums but won't start

If you have an electric motor that hums but won’t start up then we’re here to diagnose this common fault and get your machinery back up and running again.

Mechanically, electric motor humming normally points to a bearing or shaft issue. Turn the power off and try to rotate the shaft - if it’s stuck or very loose and wobbly then the shaft and bearings should be checked. First examine the shaft and ensure it hasn’t become bent or obstructed by debris. Next check the bearings for excessive wear, and if they seem in good order then the problem may be due to a failing capacitor. A blown capacitor may show clear physical signs of failure but don’t assume all is well if it doesn’t. Use a capacitor tester to be certain and replace the device if necessary.

For all electric motor faults, phone Gibbons for expert advice, repairs, rewinds and replacements. Call 01621 868138 or email info@gibbonsgroup.co.uk and one of our friendly team will be happy to help.

Electric Motors

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