Disposal emits a high-pitched squealing or screeching noise that changes with speed when running.

Safety First: Turn OFF power at the breaker before any inspection. Do not continue to run a squealing disposal; it can seize and overheat.

• Step 1 – Check for external obstructions: Ensure nothing is rubbing on the outside of the motor housing or fan cover.
• Step 2 – Listen for bearing location: Briefly power the unit (with water running) and listen from different angles to determine if the noise is from the top (grinding area) or bottom (motor bearing). Then switch OFF and isolate power.
• Step 3 – Inspect for leaks: Look for signs of rust or water trails around the motor housing. If present, an internal leak may have damaged the bearings.
• Step 4 – Evaluate repair vs replacement: Astracast motor bearings are typically not user-serviceable. Persistent squealing indicates the motor assembly should be replaced, which usually means replacing the entire disposal.
• Step 5 – Replace unit: Remove the Astracast disposal following manufacturer instructions and install a new unit, ensuring proper sealing and electrical connections.

Warning: A failing bearing can overheat and trip the overload; do not bypass safety devices.