Astracast disposal is extremely loud compared to previous operation, with a harsh roaring or drumming sound even when empty.

Safety First: Turn OFF power at the breaker before working under the sink.

• Step 1 – Check sound baffle: Inspect the rubber splash/sound baffle at the sink opening. Replace if torn, missing, or hardened.
• Step 2 – Inspect mounting gasket: Verify the rubber mounting gasket between the Astracast unit and sink flange is present and not compressed flat. Replace if deteriorated.
• Step 3 – Tighten mounting ring: Ensure the mounting ring is evenly tightened to minimize rattling while maintaining gasket compression.
• Step 4 – Add sink support: If the sink itself flexes, add bracing or support to reduce resonance.
• Step 5 – Consider upgraded model: Some Astracast models include enhanced sound insulation; upgrading may be the best solution for noise-sensitive environments.

Warning: Do not insert foam or loose materials around the motor; they can overheat and pose a fire risk.