Pump starts and runs but is much noisier than usual, with a high-pitched whine or grinding sound.

Safety first: Turn off power before touching the motor.

• Confirm source of noise: Use a mechanic's stethoscope or a long screwdriver held to your ear to localize the noise to the motor body rather than the wet end or piping.
• Check for leaks: Inspect the area between the Kripsol pump housing and motor for water drips or rust stains, indicating a leaking mechanical seal that may have damaged the bearings.
• Tighten mounting: Ensure the motor mounting bolts and pump base are tight. Loose mounts can amplify noise.
• Plan bearing or motor replacement: Motor bearings are not typically serviced in the field by homeowners. The usual remedy is to replace the motor assembly or have a motor shop replace the bearings and mechanical seal.

Running a pump with noisy bearings can lead to sudden seizure and further damage; schedule repair promptly.