Swan coffee maker makes loud banging, rattling, or buzzing noises during brewing.

Safety first: Unplug the unit before tightening any screws or accessing internal parts.

Basic checks:

• Water level: Ensure the reservoir is filled above the minimum line to prevent the pump from sucking air.
• Descale: Run a descaling cycle to reduce noisy boiling caused by scale.

Mechanical checks:

• Inspect the base and side panels for loose screws and tighten them.
• If accessible, check the pump mounting brackets and rubber dampers. Tighten or replace if worn.
• Ensure the carafe is seated properly; a misaligned carafe can rattle against the warming plate.

Some vibration noise is normal for pump-driven Swan models, but sudden increases in noise may indicate a failing pump.