ACS Vesuvius Evo Leva

bigmike

DavecUK I received it last August and I used distilled water with the Third Wave Water pack.

bigmike

Cuprajake Interesting… I am using the huge stock baskets and dosing 20 grams. I can try going up to 22 grams. If that is the issue then I need to order smaller baskets.

Cuprajake

could do, but unless you have changed something it shouldn’t change,

its as if its not registering any pressure in the pf as the gauge isnt moving, then all of a sudden it jumps over your set point, not sure if you lifted the lever or not to cause that jump, fwiw i personally found no real need to infuse over 2bars 5s infusion then lift.

bigmike

Alright, so I set the preinfusion back to 2.5 bar (how it came from the factory) and pulled a shot using a 22g dose. It took almost 10 seconds of pulsing every second until the pressure needle moved. Then it continued to pulse until it hit 3.5 bar and held, I left it for about 10 seconds before releasing the lever. So it completely passed my preset.

When I watch the videos you all post, it pulses once or twice before reaching the pressure. I like how quick and quiet that is, and my pump pretty much runs until the lever is released. Is there any troubleshooting methods y’all recommend or do I need a new pump?

DavecUK

DavecUK That’s a good point, if he is using 18g in the very large baskets they supply…but one would assume he has always used the same baskets and this behaviour is new?

It would be useful to see the preinfusion flow from the group, without a portafilter in and also…has it got the safety sleeve system?

Read this and do the test I suggest. It would be good to see the flow into a measured container…set it to 1.8 or 2 bar, then lets see what’s going on.

bigmike

DavecUK Okay. It does not have the safety sleeve.

bigmike

DavecUK I set the pressure to 2 bar and let the lever down for 10 seconds and got 90ml. I ran it again at 1.8 bar for 10 sec and got 75ml. No portafilter in

Cuprajake

Its more likely to be a pressure sensor , then the pump. They are usually highly reliable.

DavecUK

Cuprajake Its more likely to be a pressure sensor

Pressure sensors are expensive Swiss made ones and highly reliable.

Cuprajake

We need to know if you have the safety sleeve as that only has a single exit hole there could be debris in there

DavecUK

bigmike I set the pressure to 2 bar and let the lever down for 10 seconds and got 90ml. I ran it again at 1.8 bar for 10 sec and got 75ml. No portafilter in

Please make a video showing the group gauge and the flow, I also want to be able to hear and see if the pump is pulsing…please do the video. make it on YT, unlisted, then paste the link here.

bigmike

DavecUK

Cuprajake

i know but something isnt showing pressure

vladdooo

Hello

I’m having issues with the pump on the Leva

It is sounding faint and works

I come back soon with the videos

Please help

vladdooo

DavecUK

vladdooo Your pump is cavitating, this is due to being short of water. As you can see the flow is much reduced. I am assuming it was all working normally and then suddenly this started to happen?

There is not a blockage as no pressure is building
flow rate is way down
the sound is funny, typical of cavitation.

Causes:

Kink in inlet tube
blockage in inlet tube
Possible split or hole causing air to get in
It is very unlikel;y the pump itself has a problem.

Cuprajake

What happens if you just use the flush lever

bigmike

Cuprajake The water comes out at a faster speed and steadily, no pulsing. It’ll fill the measuring cup in around 10 seconds.

Cuprajake

bigmike

Um ok,

DavecUK

bigmike The water comes out at a faster speed and steadily, no pulsing. It’ll fill the measuring cup in around 10 seconds.

Good question from Jake, this is important, please do a second video using just the flush leaver. This is so I can explain to ACS, as if this is the case…

The problem is not:

The pump
pressure sensor
group blockage

In fact it’s very possible that you simply need a small adjustment to the flush lever to fix the problem a job that will take a few minutes..

A have an earlier version, so please paste a photo showing the flush lever and the area where it presses in the group pin….thanks

bigmike

DavecUK

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