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Question: The water would not go up, it leaks. I tried without coffe and milk, it worked fine, water went up. But when I put coffee, disaster! Help!
Document: I was very excited about purchasing this cappuccino maker. It worked great for about a month. After that, the pressure valve stopped working. I could no longer make a latte, and the milk would not froth for the cappuccino. Very disappointed, I went to return it and was talked into exchangeing it. The second one I had stopped working even sooner. This time the seal between the top and bottom stopped working. I tried it again and again, and it would work about half the time.
So I tried using a more coarse grind. This reduced the bitterness, and I thought I was on the right track. But after a while I realized I was drinking the equivalent of vomit.2) So I tried grinding even finer and using a higher temperature. SUCCESS! Blast it through a fine ground coffee and you are good to go. In other words, follow the instruction manual and don't be stupid like me.I also use 2% milk.
I got this product for Christmas and from day 1 it never worked. It leaked out the middle every single time no matter what I did. I tried everything, and I mean everything that was recommended in previous customer comments. I really wanted this product to work and I really gave it a fair go but, frankly, I am tired of the thing leaking, not foaming, or foaming over, or doing nothing, and just tired of cleaning up burnt coffee and milk all over the stove every morning.
This is a nice looking little pot (don't let the pictures fool you - it's larger than it looks). If it worked much better, it would be a great kitchen appliance. My gripes:  water leaks out of the pot when I'm making my latte. 2)  It doesn't have the capacity to make a large cup of latte.
I have this for 6 months now and it still works as new. It froths more if you use fat free milk. 2 months ago I noticed it was less frothing the milk. What I did to fix it was put water at the bottom and upper chamber without the coffee in the middle chamber and just let the pressure bring the water up to the upper chamber. It's like making cappucino without the coffee. It took care of the issue and now it's working flawlessly again.
Here's what has helped me:1. Must use fine grind, I use Illy, (supermarket machines don't go fine enough) and be sure to wipe residual grinds from rim of filter (I use my finger) before screwing on top, firmly.2. Watch water and milk levels, also, different types of milk (low fat etc) produce different froth results.3. Make sure gaskets are not twisted, very important that filter gasket be straight.4.
I've had this for a year now and because it's worked out so well I thought I would weigh in here. There were a few Monte Etna moments between us but now we're happily married. How nice to have delicious cappuccino at home (for me much better than any coffee shop in the area) and not have to give over half my small kitchen to coffee shop equipment. Every morning I go off to work with my biscotti (Julia Croce recipe) and my coffee mug filled. One of my better routines.
This pretty much insures success, unless you neglect to screw the parts together tight enough (which does NOT take 5 minutes!! ).--I have been using extremely fine (Greek-style) coffee and in spite of the warnings it has worked OK so far, except!!! The manual DOES say to use a brush to clean the metal filter as necessary. No explanation as to how you would know when it's necessary.
When I screwed it back together it seemed like the two half's tightened up better. My husband said," Honey im sure you need the seal in there" Of course he was right and it still leaked everywhere.Fourth Try:Went online and read reviews, found out that not many people have had success with it and that it leaks for everyone. One person recommended garden gloves to tighten it and another person said put veggie oil on both sides of the o ring.
I really wanted this to work; it was a much-desired wedding gift. But every time I tried to use it, the same thing happened... hot grounds and water went all over the stovetop. I tried to do everything right; I tried to make sure the gaskets made a tight seal, I didn't fill up the machine with too much water or coffee grounds... but now I give up.
Answer: The coffee grounds must be wiped away from the edges of the cup holding them-otherwise a seal won't be made between the top & bottom. Also, do not pack the coffee -- it won't allow the stream to penetrate & will cause the pressure to build , causing the leaking & pressure valve to steam outward. Also, make sure you use espresso grind only. Important: make sure the top & bottom are tightly screwed together. That will also let the steam leak between the pieces. Press down the top button, if you put milk in for cappuccino.  This isn't a fast process, but  it's good. Just keep your instructions nearby for a bit.