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Sounds like the venturi tube could be blocked. My model is a CVA 4085 and I can take the assembly out that sucks in the milk, mixes the air and stem and spits out frothed milk. If yours is similar, see if you can can reach the top of the milk outlet tube and rotate the ring around it anti-clockwise (if you were looking up from the bottom) and take the whole assembly out. If you have never taken this out, disassembled it and rinsed everything out thoroughly under a running tap now is a good time to do it. Then check the venturi tube: the clear (ish) bendy plastic tube that that points up and has a cone with a hole in the top. If that hole is blocked you won't get very good froth. If you can't clear it with warm running water then VERY CAREFULLY use a small needle to push through the hole at the top, then put everything back together.
It sounds like the venturi tube is blocked. Have you ever removed the frothing unit and cleaned in manually? I have a model 4085 and I can reach under where the milk exit tube comes out, twist anti-clockwise (if you are looking up at it) and the whole assembly with the inlet and outlet tube comes out. These pieces can then be individually taken apart and rinsed thoroughly with warm water. If you put it back together (don't forget to twist the connector that locks it back in) and the milk still doesn't froth, take it out again and use a small needle to clear the top of the clear venturi tube which sucks air in to do the frothing. If it is really badly gunged up it might need to be replaced, but mine is 5 years old and still going with regular rinsing. My whole brew unit had to be replaced after 4 years at a cost of about GBP 200, but that's another story.
it is clogged with dried milk. Remove the frothing wand from the machine. now press milk froth. you should get a ton of steam blowing out of the hole where the frother used to be. Your frother comes apart for cleaning. pull the chrome tip off, pull the 90 degree fitting and the black milk suction tube off, if it is really dirty you can soak the disassembled frother in hot water with a cleaning tablet. ( the small ones you drop in the brew unit, not the big descaling tab.) also, there is a clear tube with a point on the end of it sticking out of the frothing wand. this is an air admittance oriface. it allows air to enter the hot milk stream and make it frothy and bubbly. if it gets clogged, you will get hot milk but no froth. Your machine came with a spare one in the parts kit.
Hi. Have you removed the white wheel and tried to clean it? Check the O-rings on the frothing part for damages.
Sometimes cleaning it hasnt helped at all, The solution for it that might sound crazy =) that fixed it for me at that time was to block the 2 holes with you fingers(be carefull its hot) where the milk comes out from when you make coffee, you get a little backpressure in the milk circuit when doing it. Try 2 or more times. It helpt me.
Hi There should be a little knob on top of the cappuccinatore. It is what causes the milk to flow up the tube. When it is steaming, rotate the knob slowly until the milk starts to flow up the tube. You can fine tune the knob to get the best foam. If you are missing the pin that has the knob on it, there will be a small hole in the outside top of the cappuccinatore. If you don't have hole and a knob, it is broken off and you need to replace the cappuccinatore
I purchased a unit second hand for my wife's birthday today. It's only 4 months old, got it home, tested it, same problem... No froth!
I've read all the posts here and all were very helpful troubleshooting guides however they did not solve the issue.
Understanding how the frothing mechanism functions is half the battle in figuring out the solution. It's a simple vacuum type system. No doubt you've read about checking the orings. This is definately the first thing to check however if this is not the reason then consider the following.
The larger of the white tubes that has the red and black oring inserts deep into its port on the tap. Why? It pushes steam past the milk pipe directly into the chrome frothing tube which causes a vacuum essentially drawing milk up it's hose creating the froth. What you can't see without further investigation is that on the underside of the tube centered between the red and black orings is a small hole. This hole is responsible for drawing the milk upwards. If this is blocked, and it probably is then no milk and no froth. Use a really small screwdriver to carefully clean the white tube both from the front and the little hole underneath.
So in conclusion. Any air leak between the red and black orings will prevent the vacuum required to draw milk up the tube and alternatively any blockage of the milk channel will also obviously prevent the flow into the frothing mechanism. Hope this helps.
First open it up and run it without any milk attached until just mostly steam is coming thru. Turn off - then drop the tube into a jug of milk which is locted below the outlet. If its steaming, the milk will be heated up ok - it may need flow adjusting - lift the thin 'plug' near the tube up and down to adjust flow. You can add to the froth by lifting the tube out of the milk for a moment then back in again a few times.
To clean the unit just run clean water tru as tho it was milk until it comes out totally clear (about 1/4 cup). For hygiene sake make sure the tube is wiped clean on the outside with a clean paper each and every time when finished.
You can flush your main coffee lines out by making out its doing a large preground coffee - but don't put any preground in.
Select preground - select large coffee and go. Pays also to remove the brew unit and wash in warm water once a week - saves coffee goo building up and causing it to stick.
Try this, the valve diagram shows that you twist the knob, but you left it up and down to adjust the flow. You could also check that the container you have the milk in, is lower in height than the cappuccinatore to help it siffin the milk up from its container. Make sure the cappuccinatore is fitted correctly pushed in fully and half fill a cup with milk and pull the valve adjuster up a small amount and push the button. It should start pushing steam out the cappuccinatore and then within a few seconds it should start siffining milk up the tube.