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Noah Tannen Posted on Nov 29, 2017

Pavoni piston can't go high enough to let water into the chamber

When I raise the lever to let the water into the group, or brew chamber, I have to pull it up very hard -- using one hand to hold the base down. Almost like I'm flexing the piston. I've tried removing the lever and pulling up the piston by hand. That lets the water in. Has anyone else had this problem? How did you fix it?

1 Answer

Guy Tzur

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  • Contributor 9 Answers
  • Posted on Jul 08, 2019
Guy Tzur
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Joined: Feb 08, 2017
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Hi
you probably have your piston rod is little bit loose from piston so it does not raise piston high enough so group head must be disassemble and reconnect the rod with loctite
regards
Guy

5 Related Answers

Pierre Laplante

  • 2061 Answers
  • Posted on Jan 16, 2008

SOURCE: lever pressure

clean up time use a product to remove calcium how many time i saw that calcium ruining very good machine hard water is a killer of those beloved machine dont use vinegar not strong enough and dont forget to rinse the machine very good that stuff is very corosif dont forget to rate this good luck cheers

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Jack Reed

  • 30 Answers
  • Posted on Jun 26, 2008

SOURCE: Spacemaker not pulling water out of the water reservoir

If the vinegar/water trick does the job again then you do have a hard water problem. I had to run 6 pots (just reused the same water over and over again, once it had cooled down) to get a Cuisinart to work properly that had spent it's life in Illinois (I'm in Colorado). You might also think about using a filter system that softens water just for your coffee maker.

If the vinegar water fix doesn't get things going again then the water heater has gone bad and needs to be replaced. Abtec is the only source I've found for them. If you're not handy and used to repairing small appliances the job may be too challenging for you.

I've repaired mine no less than 5 times, but I'm very good with machinery of all kinds. Feel free to reply if you need more help.

Anonymous

  • 1089 Answers
  • Posted on Jan 06, 2010

SOURCE: My brew group is jammed.

Hi
Its on the left inside of the brew unit. There is a hole on the left side of the brw unit. That hole is to access the screw in the normal position but now it has mover. You will have to go in from the side. Its a #1 Phillips screw. You will need a 6" screw driver.
Here are the directions you will need.
You must make sure that the brew unit is ready to reinsert into the machine. To return the brew group to the centered position, you first need to drop the funnel. To do this, look on the opposite side of the brew group from the handle. At the top you will see an object that looks like a sharks fin. If you follow this piece down you will see 2 horizontal bars on the brew group body. Push your finger between these 2 bars and the funnel will drop. If you have you key you can insert it in the front of the brew unit. There is a round hold in the center below the “Push”, and twist it clockwise until it stops and the 2 marks are lined up. If you don’t have your key you can do this. Push the puck slide on the left side down and to the center. If you look down through the funnel you should see a piston. This should be centered in the funnel. If not, locate the slide on the left side of the brew unit, (it should be hanging down, a flat rectangular piece attached to the cylinder) and push the slide to the right until it does. Press the “Push” lever until you hear a click and you are now ready to reinsert the brew group in to the machine. First you must close the door with the drip tray and dredge drawer inserted, and turn on the machine without having the brew group in. You will hear the motor turn on and when it stops completely, open the door and remove the tray, and dredge drawer, now insert the brew group, and replace the tray. If it still won’t go in check the cog in the back of the machine. There are 2 wide teeth that should be at the 10:00 and 12:00 position. If they are at a different position you have a broken drive gear.

EsWorld

Ernest R

  • 1618 Answers
  • Posted on Mar 29, 2010

SOURCE: jammed brewing unit

Remove the brew unit and check the screen under the red o-ring, find the 2 screws above the top piston and make sure the chamber that leads out to the tube is clear.

Anonymous

  • 43501 Answers
  • Posted on Mar 01, 2011

SOURCE: Our platinum keurig has stopped

Hi,

Here is a tip that I wrote that will give you some things to try that will help you get your Keurig coffee brewer working again.

Keurig Coffee Brewer not making a full cup of Coffee


heatman101


==-[]][

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Related Questions:

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Why water drop before lever raised until top position?

\\this might be caused by a worn piston seal. see here how to replace seals.
dr pavoni
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Espresso comes out of comes out of spout before handle is raised

Hi there, i am Mr La Pavoni and am based in Glasgow, Scotland. I service and repair these machines all day every day and basically it could be a couple of different things. If it is pre 2000 then it could either be the piston gaskets or the piston shaft has come slightly unscrewed from the piston head. If it is post 2000 then it could be any of the above but also in these models there is an additional sleeve inside the group head which may be cracked or the seal on this part may need replacing. It could even just be a tiny bit of debris on one of the piston gaskets. If you have removed the shower plate and gasket and then taken out the piston assembley then you should really replace these gaskets anyway. You can purchase the parts on my website www.theespressoshop.co.uk which are all individually priced and every part is available for the lever machines. If you require any further assistance then please do not hesitate to get in touch at [email protected]

All the best

Mr La Pavoni
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When I pull up on the lever water doesn't consistently get pulled thru.It seems to be getting worse.Thank you, Erika

Hi, I just had the same problem and fixed it by tightening the piston which had loosened itself from the piston rod.
This is actually a very quick and easy fix.
You need to remove the diffuser screen to access the piston, then tighten piston, which is threaded onto the piston rod. I simply tightened it by hand but for a more permanent fix, you probably want to take the piston and rod right out so you can get it tighter, or maybe use some locktite or similar.
The good thing is you can give the machine a clean behind the ears while you're in there and one or more of the rubber gaskets may be due for replacing anyway.
For details on how to get at the piston, read through this web page http://www.pavoniexpress.com/sealrepl.html - REPLACING THE GROUP PISTON GASKETS AND GROUP TO BOILER GASKET

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Gear that drives the brew group has broke for the third time odea giro

Usually gears breaking is a sign that your grinding the coffee too fine. Other possible reasons for breaking gears are a malfunction with the brew group itself. Unlubed and uncleaned brew groups are notorious for breaking the gears as well.

I recommend soaking the brew group in hot water and cafiza for a while, rinsing, and then lubing the inner chamber, side screw nut, and lower piston.

After that i recommend adjusting grinder settings lower to not place as much stress on the machine.

Most people do not understand that these home super automatic machines were never made to make authentic espresso, but an approximate of it.
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Adding pressure gauge to Pavoni Europiccola

  1. in the boiler water is heated and presured up to 1.5 bar
  2. when water gets in lever and non return valve closes becouse you press the lever down, your energy is used to get high pressure, it should be frpm 7 up to 9 bar.
  3. SOLUTION==if you search way for modifying, you must consider that you must pump directly to group, not to boiler. in this case water will be cold (becouse comes from pump). you will need boiler in boiler to heat the water wich comes from pump before it gets to group. this is bit more complicated than you thought may bee but it is only solution.
1helpful
2answers

Water too slow

Most probably the plunger has unscrewed. You need to remove the plunger from inside. Remove the bottom circlip and remove that pin so that will be disconnected from the plunger mechanism. Remove the bolt and washer on top of the plunger, remove the group and than smartly tap with a rubber mallet to remove the plunger mechanism from below. You will probably notice that the shaft is unscrewed from the ceramic plunger though not all the way. Tighten this and clean inside the group. replace the mechanism from below and replace the sieve with the rubber o-ring seal - you will have to use a screwdriver or similar implement to secure the o-ring in the space. Replace the pin for the handle insert the circlip and replace washer and bolt. You are good to go.
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Lever pressure

clean up time use a product to remove calcium how many time i saw that calcium ruining very good machine hard water is a killer of those beloved machine dont use vinegar not strong enough and dont forget to rinse the machine very good that stuff is very corosif dont forget to rate this good luck cheers
0helpful
1answer

I can't get any water out of my machine

rod into piston may be slack stopping water coming into group at inlet hole - take piston out and tighten rod. I had this same problem and this fixed it for me. Slackening occurs through time - maybe too much coffee in basket and forced onto base of group.
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