I had a bottomless portafilter with the ACS Minima I bought which I believe was the one that would have come with it. It also came with the double spout. The bottomless one was used for the first time recently and a couple of things concern me and I’ve no idea of the cause. It has a 14/15g basket in it and using that amount of coffee, or less: When in use the portafilter is spitting coffee out. Not huge amounts but enough to not be normal. When locked into the machine it’s nowhere near as far round as it should be but won’t move any further. I assume these are linked but considering it was with the machine no idea why. The double spout works fine and sits much further round when locked in - almost 90 degrees to machine Any suggestions why, and can anyone suggest which bottomless portafilter fits the ACS Minima well please as I want another asap? I ordered one online and it didn’t fit! Many thanks, Mark

Portafilter spitting coffee!

Mr_H

I had a bottomless portafilter with the ACS Minima I bought which I believe was the one that would have come with it. It also came with the double spout.

The bottomless one was used for the first time recently and a couple of things concern me and I’ve no idea of the cause. It has a 14/15g basket in it and using that amount of coffee, or less:

When in use the portafilter is spitting coffee out. Not huge amounts but enough to not be normal.
When locked into the machine it’s nowhere near as far round as it should be but won’t move any further.

I assume these are linked but considering it was with the machine no idea why. The double spout works fine and sits much further round when locked in - almost 90 degrees to machine

Any suggestions why, and can anyone suggest which bottomless portafilter fits the ACS Minima well please as I want another asap?

I ordered one online and it didn’t fit!

Many thanks, Mark

MediumRoastSteam

Mr_H When in use the portafilter is spitting coffee out.

From where? from the bottom of the basket, from the top? If it’s from the bottom of the basket, do you mean channeling?

A video would help.

Mr_H

Hi, machine not setup at the mo so haven’t got a video to hand

from the bottom as it comes out, it’s spitting in all directions

simonc

Different baskets even with same handle will cause the portafilter to lock at distant angles so nothing to worry about by itself.

15g bottomless baskets are very unforgiving of bad prep and even if not channeling you can still end up with spray sideways.
Light roasts are more prone too.

What beans do you have and what is your puck prep?

Mr_H

Using various beans - long story short it’s used as a club machine offering different coffees at different events

standard prep, good level tamp, smooth, brush off any surplus on top sides of basket

Twotone2

Sounds like the big o ring washer in the group-head needs replaced ie the one the portafilter locks into they usually cost buttons dead easy to change.

The other issue is likely poor prep you need to use those needle things to make sure that there’s no way water can get through the puck easily ie WDT the grinds in the portafilter and use a magnetic dosing funnel.

Also buy a larger basket as said above 15g is bit awkward to get right, I’d go for an 18g VST basket if I were you or use the double spout PF with the 15g basket but you’ll not know if you have prep issues with that one.