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What size are the o-rings on the front (3) where the milk jug plugs in and the large orange on on the plunger inside for the Delonghi Rialto EAM 4500?

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

Jeff the TV
  • 82 Answers

SOURCE: Need descaling instructions for EAM 4500 auto espresso machine

use 1/4 cup of vinegar and fill pot with cold water, run through machine

Posted on Aug 01, 2009

tbirdfan1
  • 3051 Answers

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
tbirdfan1 says:
may be causing your problem the o-rings are not setting their properly

tbirdfan1 says:
here is some more information

tbirdfan1 says:
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

tbirdfan1 says:
from the solenoid (brass bit with grommets) and check that the clips are in place.

Posted on Nov 10, 2009

  • 2 Answers

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

  • 5 Answers

SOURCE: delonghi Magnifica 3500 not frothing

use cold low fat milk and keep the milk container in the frig.
Make certain that when washing water come out of both holes.

Posted on Aug 21, 2010

  • 1 Answer

SOURCE: delonghi rialto eam4500: Lost Hot Water Spout. Where to get one?

I had the same problem!! I was able to find one on Amazon:
http://www.amazon.com/DeLonghi-5532124900-HOT-WATER-SPOUT/dp/B002EKFX06

It works on 4500 as well as a couple of other models :)

Posted on Oct 31, 2010

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DeLonghi Rialto EAM-4500. When I turn it on, it makes loud noises and give me the following message:Ground too fine adjust grinder and insert water spout


Step: 1 Switch off your coffee maker. Remove the first brewer unit. Wash it thoroughly under running water.

Step 2: clean the coffee grinder using vaccum cleaner.

Step 3: switch on the Machine !!! Make Coffee

(Note: if you hear loud noises during coffee preparation then please use food graded grease to fix it)

Mar 19, 2017 | DeLonghi Coffee Makers & Espresso Machines

1 Answer

Milk not coming out of milk jug.




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.

May 15, 2014 | DeLonghi ESAM5500

1 Answer

I have a Delonghi EAM 4500 and it does not froth/Foam the mil, I have replaced the milk cover lid 3 times, still it works for a short time then stops.


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
tbirdfan1 says:
may be causing your problem the o-rings are not setting their properly

tbirdfan1 says:
here is some more information

tbirdfan1 says:
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

tbirdfan1 says:
from the solenoid (brass bit with grommets) and check that the clips are in place.

Nov 10, 2009 | DeLonghi EAM3500 Espresso Machine/Coffee...

2 Answers

Had the Rialto 4500 for over a year. All of a sudden the milk is not coming out properly, mostly just steam. I've cleaned the tube and container top many times ! What else can it be ?


Me too! They ordered me a new milk pitcher from Italy. Didn't work. They told me to run it through some tests using water in pitcher. Didn't work. They then told me to send it in to a Delonghi repair shop. They just told me that it was all "clogged up" and also needed a new generator. The tow are linked together. We descaled fairly regularly. Total tab: $380! OUch! Have not told them to go ahead. seaching for cheaper solutions. Let me know if you hear of any. wosbrink@me.com.
Will Houston TX

Oct 23, 2009 | DeLonghi Esclusivo Magnifica ESAM3300...

3 Answers

Need descaling instructions for EAM 4500 auto espresso machine


use 1/4 cup of vinegar and fill pot with cold water, run through machine

Aug 01, 2009 | Coffee Makers & Espresso Machines

2 Answers

I have a Delonghi Magnifica Rialto EAM4500 coffee maker. Recently it has stopped frothing milk. Per delonghi I have replaced all of the gaskets that connect between the milk container and the unit. When we...


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.

Apr 09, 2009 | DeLonghi Coffee Makers & Espresso Machines

1 Answer

Trying to purchase spare milk jug


The following site has all of the accessories like pitchers

http://www.delonghi.com/Int/USA/customer.html

I believe the milk pitcher is about 1750

Jun 17, 2008 | DeLonghi EAM3500 Espresso Machine/Coffee...

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