It buzzes but doesn't clean: what to check

Check these first

1. The liquid is not degassed. Run the cleaner for 5 to 10 minutes with only liquid in it, then try again.
2. The liquid is used up. Change it when it looks dirty.
3. You are using plain or deionized water. Add a cleaning agent, because water alone does not clean.
4. The level is wrong. Fill to the line and keep the item completely under the surface.
5. There is dirt on the bottom of the tank. Empty the tank and wipe it clean.
6. The cleaning agent does not suit the dirt, or the run is too short or too cold. Stubborn dirt needs more time, and warm liquid usually cleans faster. Stay within the time and the water temperature in the answer for your item.

Use the basket

Do not lay items directly on the bottom of the tank. Branson's manual says so for its tanks and tells you to use a tray, a basket or a holder. 79 of the 180 cleaners in our database come with a basket.

Test the cleaner itself

If all of that is in order, test the cleaner with a piece of foil. It takes ten minutes.

The foil test, step by step →

Our own advice, not from a source: If the foil comes out untouched, the fault is in the cleaner. Look at the troubleshooting pages in its manual, and contact the seller if it is under warranty.

Some things ultrasound does not remove

Tarnish on silver does not go away with ultrasonic cleaning. That is not a fault in your cleaner.