Pump is very noisy, with a loud grinding or screeching sound from the motor end

Safety first: Turn off power and do not run the pump for extended periods while it is making grinding noises; this can lead to motor failure.

• Confirm source of noise: Remove the pump lid and basket, then briefly run the pump. If the noise clearly comes from the motor body rather than the wet end, bearings are likely worn.
• Check for leaks: Inspect the area between the pump housing and motor (seal plate) for signs of water leakage or rust stains, which indicate a failed mechanical seal.
• Plan repair: Bearing replacement requires motor disassembly and press tools. Most homeowners will replace the entire Saci motor assembly or complete pump rather than individual bearings.

Continued operation with noisy bearings can cause the rotor to seize and trip breakers; schedule repair or replacement promptly.