Question about Pasquini Livia 90 Espresso Machine

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When i clean my machine, the release valve isn't working as it should. the pressure builds up in the head and water just trickles out of the release valve. i've had my machine for approx 1 year. Could the filter be stopped up? Is there a way to take out the filter in the water reservoir?

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Correct me if I'm wrong, but this is what I think you're doing when you clean your machine: You place a blind filter in the portafilter handle, along with about a ½ teaspooon of approved cleaner (Puro Caff, Cafiza, etc.), then lock the portafilter into the group head and press the brew button.
Since the blind filter has no holes to allow the hot water to pass through, the pressure keeps building in the line until it the 3-way valve opens to release the pressurized water into your drip tray.
Sounds like what you're saying is that the amount of water being released into the drip tray is just a few, slow drops, presumably indicating that if you keep the brew switch turned on the pump eventually reaches some high pressure limit beyond which it's not accomplishing anything (you'll still hear it try to vibrate, but since the fluid isn't moving anywhere, the vibratory movements aren't accomplishing anything other than to maintain the high pressure in the line. If this is indeed the case, then you should be getting quite a messy release of all that pressurized water if you were to turn off the brew switch and try to remove the portafilter from the group.
Now, if all these things are true, then it sounds very much like a stuck/plugged up 3-way valve. If the group has been cleaned (as described in the first paragraph) infrequently, if ever, then it's not uncommon that the line running from the group to that 3-way valve is plugged with old grinds that worked their way back there, one shot at a time, but never got flushed out.
In addition to backflushing with hot water (very frequently), you also backflush with a cleaner (maybe once a month?), and at that time you remove and clean the brass dispersion head and screen. You can see how much gunk builds up there even with a pretty regular habit of backflushing. Well, by design that backflushing pushes those nasty old grinds back up the line to the 3-way valve. So you can see that if the dispersion head & screen weren't cleaned regularly, or if the backflushing routine (with cleaner) wasn't being done properly (or at all), it wouldn't take long for that whole line and maybe also the 3-way valve to become increasingly clogged until the flow is reduced to a few drips, even under 1.5 bars of pressure.
If you don't regularly tinker with plumbing and electrical repairs, this would probably be a good time to take your machine in to a local authorized repair facility. They'll probably replace your 3-way valve and clean out the whole pathway from the group head back to that valve.

Posted on Sep 21, 2009

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There is apossible restriction, but, whatever actuates the rrelease valve is what is actually malfuctioning.Depending on you level of detertermination, you can follow my approach to the dilemna if mass production. Since it doesn't work, find out why! Worse case scenario is the trash can, the best, A better understanding and working knowledge of the appliance. Screws usually hold these things together. Expresso machines are not inexpensive and there is a reason for those big bucks. No glue! So always taking the electrical part into consideration, there is no reason you cannot disassemble the unit and entertain yourself while at the same time learn something. Always take the approach that someone assembled it and you can disassemble it. If it does have glue, rhen it was anever intended to be serviced or repaired by anyone. So give it a shot and if you run into a problem, Give me a holler and we will keep moving. My ph. # is 909-630-3192. You may have to send me a picture or two of our project, So have a camera ready.... Ned

Posted on Jun 28, 2009


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