The Breville Cafe Roma steaming wand makes an insanely loud high pitched noise (whether submerged in milk or not) when trying to steam milk.
It has nothing to do with it being blocked :)
it just a sound milk makes when boiling im trying to look for a awnesser but ever coffee machine dose the same sound when steaming milk im still researching why milk makes that sound but don't worry it not your machine it normal :)
This could be blocked. The best way to clear this is to switch off the machine and see if you can dismantle the frother arm. Sometimes the arm will come off by unscrewing. If it does, wash it in hot water and washing liquid. If it doesn't come off try putting the frother wand into a mug of cold water and allow it just to steam the water.
Frother wands don't just steam liquids - they **** up liquid which can block the vents and the actual steam hole which this machines' problem sounds like it does have.
I stopped the shrieking on my inexpensive farmer expr/cap maker by twisting a sewing needle in the hole. Brushes are made for this, tho. De-calc'ing helps (commercial product or citric acid from canning supplies in grocery).
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Thanks for the response. The machine is brand new, so it's hard to believe that it would be clogged already but I will definitely try to soak and scrub it! This is really only about the third time I've used the steaming wand and I've wiped it down religiously after each use. Regardless, I'll try and will report back.
It happens when you only have a small (less than half) amount of milk in your stainless steel jug. It's the stainless steel resonating with the vibration of the steam hitting the bottom. Try using a little more milk or keeping the wand up higher until a little froth has been made. Once the milk is frothy the noise should stop and you can lower the wand down again :)
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