What causes magnetic rotor decoupling in MP miniature magnetic drive pumps?

Magnetic rotor decoupling is a unique failure mode in MP series magnetic drive pumps.

When the motor runs but impeller stops, first check for overload or solid particle jamming in the impeller chamber.

Intermittent decoupling often indicates excessive rotor gap (should be 1-3mm) or worn isolation canister.

Sudden decoupling after high-temperature operation suggests magnet demagnetization - replace with high-temp samarium cobalt rotors if needed.

For new pumps, verify motor rotation direction matches pump arrow and realign rotor position marks if necessary.

Abnormal noise with decoupling usually points to worn bearings causing rotor eccentricity.