Question about DeLonghi Coffee Makers & Espresso Machines
I have lost all of these o-rings and am not sure if my troubles with no froth, very, very small milk flow, and water flow are related to not having the correct sized o-rings. I am hoping to pick these up at a hardware store rather than ordering online.
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Posted on Jan 02, 2017
SOURCE: I have a Delonghi EAM
remove the o rings where the milk frother connects
to, there is a green, red and black rubber O ring. Remove them and get
a toothpick and clean around where they sit. You will notice a hard
milk build up like when you get on your teeth. This is what
may be causing your problem the o-rings are not setting their properly
here is some more information
It turns out the electrical connection for the solenoid valve that feeds the hot water out into the milk jug/hot water tap had come loose. They are clipped on rather than being soldered into place. Trace the wires back to the main board from the sole
from the solenoid (brass bit with grommets) and check that the clips are in place.
Posted on Nov 10, 2009
SOURCE: I have a Delonghi Magnifica
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.
Posted on Jan 10, 2010
I had the same problem!! I was able to find one on Amazon:
It works on 4500 as well as a couple of other models :)
Posted on Oct 31, 2010
Tips for a great answer:
Mar 19, 2017 | DeLonghi Coffee Makers & Espresso Machines
First make sure you have the tube seated all the way in, the one inside the milk jug. I had assisted with the same problem before and the owner did not put the tube back in after cleaning the milk container. Next add a little Petrol-Gel Food Grade Sanitary Lubricant to the O-Rings, should have two (a small black one and an orange one) on the machine that the milk container connects to. This will assist in creating a better seal. If either are missing then you found the issue. The O-Rings are critical to any pressure system, so keep them clean and lubricated. You can get Petrol-Gel at a restaurant wholesaler or Amazon.
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