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Pasquini Moka Grinder w/Doser

Hi, there!

The doser on our Pasquini Moka isn't...well, dosing. The spring appears to be intact, but the blades aren't turning.

Any idea what we can do to fix this?

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HOW DO I CHANGE THE GRINDING MECHANISM ON MY SPIDEM TREVI EXCLUSSIVE ESPRESSO MACHINE. I HEAR THE MACHINE GRINDING BUT IT'S REALLY NOT DOING ANYTHING. ANY SUGGESTIONS


When the grinder spins free and fast it only means that fresh beans are not feeding into the burrs. This happens when:
1- Grind setting is too fine and beans cannot enter the grinder mechanism.
2- Use of oily dark roast beans can clog the ground coffee chamber and preven the fresh beans entering the grinder.
3- The ground coffee chamber outlet is clogged due to oily beans or too fine coffee setting.

When you cleaned the grinder you may not have cleaned the coffee outlet to the doser on the left. You can clean the outlet to open the passage of coffee grounds to collect in the dosing device..
After cleaning the outlet, you should next make sure that coffee grounds are not packed in the doser. The doser is inside the door right above the brew group.
To access the doser:
1- Remove water tank.
2- Remove the brew group.
3- Lay the machine on its back for full view of the doser.
4- Pull the doser door open (it is like an Attic door.
5- Keep the doser door open and clean the inside with a brush. The outlet from the grinder is on the right side with a wire wiper cleaner that moves across the grinder outlet fills from the grinder. This opening.
Use a brush to clean the doser.
On the left of the doser space there is a plastic flap that is pushed to the left when coffee grounds fill the doser.
At certain distance push back (1/4") the notch on top of the flap pushes the doser micro switch pin to stop the grinder. Push the flap gently to the left to make sure that it is moving well. With each push back of the flap, one can hear the feeble click sound from the micro switch.
When the above cleaning is done, try the grinding.
If the conical burrs have not been replaced for over 2500 grinds, it is time to do so.

The above grinder and grinder doser cleaning instructions are available as download files on the following page link:

One can find many useful maintenance guides on one page.
Good luck.
http://www.partsguru.com/MaintenanceofEspressomachines.htm

Feb 10, 2015 | Spidem Coffee Makers & Espresso Machines

Tip

Rancilio Rocky w/ doser: clean sweep of coffee grounds


The Rancilio Rocky coffee grinder is a superb, highly recommended machine, but its doser is pretty useless in the home. First reason: you want to grind coffee instants before you brew or pull your espresso shot; otherwise, the grinds just lose aromatics and flavor. The doser only works for multiple doses, so you're better off just grinding the amount you need each time. If you're buying a Rocky, get the doserless model.

If you have the doser model, like I do, you also find that the vanes which sweep the coffee into your portafilter or cone leave a layer of grounds on the doser floor. If not cleaned out, they turn rancid. There are coffee web sites with fairly complicated instructions on how to modify the vanes to do a clean sweep. Here's the simple way:

Flip up the doser cover, and spin the vanes while pressing your finger lightly on the outer top edge of one vane. The vanes have enough play so the pressure brings one into light contact with the doser floor, sweeping 99% of the grounds into your waiting portafilter.

on Jan 03, 2011 | Rancilio Rocky Espresso Coffee Grinder -...

Tip

Briel Java coffee grinder doser failure


My doser lever failed. I diassembled the doser housing (three screws in the base) and found the return spring had fractured. I did not have any spring steel (such as a piece of clock spring) so I found it possible to cut a piece out of an old feeler gauge (38 thou) using tinsnips. I cut to the correct length and glued into the plastic housing as originally -just saved myself $100 and more importantly to me, all the pain of getting the grind setting correct on a replacement grinder

on Jul 22, 2008 | Briel CG5B Electric Burr Grinder

2 Answers

Why does no brewed coffee comes out? bypass preground does work


- coffee-channel is stuck.

check google for calibrating/cleaning your gaggia.

Aug 27, 2014 | Gaggia Titanium Espresso Machine

1 Answer

Doser on Rancilio has worn (I'm guessing) to the where the "ratchet" mechanism doesn't always move forward but hangs and I have to go in and manually turn the vanes. I tried to take the...


Hi There is a spring that holds tension on the paul (ratchet) underneath that is broken. You need to replace the spring. Remove the plate on the bottom of the doser to see the paul and spring. The spring is flat on most Rocky's.

Jul 02, 2011 | Rancilio Rocky Doser Espresso Grinder...

1 Answer

We have a Mazzer Super Jolly grinder and we can not get the dosing lever to move without pulling very hard while holding the machine with the other hand. Please help.


your doser mech is possibly gunked up with old grinds, first off try stripping it and cleaning it out, if that doesnt work you may need a new return spring but i think its far more likely to just need a good clean. this is from the mazzer mini but the doser design is pretty much the same so it should help you with disassembly
http://www.home-barista.com/grinders/mazzer-mini-component-photos-t3577.html

May 09, 2011 | Mazzer Coffee-grinder SUPER JOLLY Electric

1 Answer

Grinder grinds but when I try to dose it won't turn inside to dose.


Doser lever failed. I diassembled the doser housing (three screws in the base) and found the return spring had fractured. I did not have any spring steel (such as a piece of clock spring) so I found it possible to cut a piece out of an old feeler gauge (38 thou) using tinsnips. I cut to the correct length and glued into the plastic housing as originally -just saved myself $100 and more importantly to me, all the pain of getting the grind setting correct on a replacement grinder

Nov 24, 2009 | Mazzer Coffee Makers & Espresso Machines

1 Answer

I have a Rocky Grinder. The spring that pulls the


no, dont worry. Just return the lever by hand. Replace the spring and it will break again. It is a hassle to replace and not having it will not affect the function

Sep 19, 2009 | Rancilio Rocky Espresso Coffee Grinder -...

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