Chefman Pump Vibration / Cavitation Noise

Coffee maker makes loud buzzing or rattling noises during brewing.

Advertisements

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Advertisements

Possible Causes

Air in pump inlet line, Reservoir not fully seated causing air ingestion, Scale buildup increasing pump load, Failing vibration pump mounts

How to Fix / Troubleshooting

Safety first: Keep hands away from moving parts while the unit is running. Unplug before repositioning.

Steps:

  • Ensure the reservoir is full and firmly seated to prevent air from entering the pump.
  • Run 1–2 brew cycles with plain water to purge air from the system.
  • Descale the machine to reduce pump load and internal restriction.
  • Make sure the coffee maker is on a stable, level surface; vibration can be amplified on thin countertops.

If the noise is very loud and persists, the vibration pump or its rubber mounts may be worn and require replacement.

Advertisements

Repair Difficulty

Medium 3/5

Required Part

Vibration Pump
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements