ACS Vesuvius Evo Leva

LMSC

DavecUK The green Viton ones are the standard seal, Paulo uses those, but not from Nuova Ricambi, specifically.

Are they better than what we have on our machine, 3 users reporting a leak? Silicone might still be a better fit, but I haven’t seen one yet!

NelisB

DavecUK So why do we get the black plastic-ish one in the Evo? On the other hand, I had a couple of brown Vinton seals in my Lambro. They would all turn out dry and brittle at the point where the water flows in the cylinder. Is the green version better?

CoyoteOldMan

NelisB The design of the ACS/TOF group should prevent that (perishing of the seal at the water entry point), as there is no overlap of the seal with the entry points - the interesting question is whether the whole seal being exposed to more uniform temperature changes is enough to prevent overall perishing…

Viton also comes in black; I don’t know if the green version has in any way different physical/chemical properties or just a different colour.

DavecUK

NelisB Viton can be in black or Green…Paolo doesn’t use the rubber seals, it would only save a few cents, why bother, @CoyoteOldMan has covered the fact the water enters the under the seal and the viton issue as well.

NelisB

CoyoteOldMan Viton also comes in black; I don’t know if the green version has in any way different physical/chemical properties or just a different colour.

From Paolo’s words, I would conclude our groups are not supplied with Viton. He wrote me: "I could ship some in Viton to check if the problem is
the temperature"

DavecUK

NelisB I know for a fact, Paolo buys his seals from the group manufacturer, they are all Viton, that’s all the group manufacturer uses. Possibly a lost in translation error.

In an an emergency he might buy Viton from Nuova Ricambi.

NelisB

DavecUK Nuova Ricambi was my find, I didn’t get that information from Paolo

DavecUK

NelisB I know

Abdulaziz

Hi everyone,

I will explain the mod I did and what exactly is needed (again big thanks for NelisB )

what you need to buy for the mod:

1- 24v dc solenoid valve

Mine: https://www.electricsolenoidvalves.com/1-4-24v-dc-push-connect-plastic-solenoid-valve/

NelisB’s: https://www.aimfluid.nl/nl/artnr/0ae106bv35201/acl-magneetventiel-e106bv35-2-2-nc-g1-4-fpm-dn3-5-024-dc

2- based on what kind of solenoid do you get; you will need a connection from the manifold pipe to the solenoid (size ⅛″)

Mine: (I bought a plastic one, a push-pipe to ⅛ from a local store)

NelisB’s: https://www.pneuparts.com/en/item/SC184MSV

Implementation setup:

1- most important part and before doing anything rise the pressure stat to 4 bars (pressure stat is responsible for cutting the power of the pump when it reaches a certain bar, so we need it at max in order to avoid any cutoff for the solenoid as I assume you have the desired pressure managed outside the machine)

2- Connect the manifold to the solenoid

3- Connect your water source to the solenoid

4- remove the pump wiring and connect it to the solenoid.

5- Remove the old plumping solenoid and its pipe (to make space for the new solenoid)

6- redo the connection of the OPV as marked in the picture (you will still need the tank so the OPV discharge into it)

7- Trick the machine that the tank is full (either by flipping the sensor upside down or what like what I did)

8- Enjoy!!

Important notes to be considered:

1- Removing the pump and its pipes is optional

2- The solenoid will act as the pump’s usual behavior (will be triggered when you pull the level, stop when you release it & when the steaming boiler asks for a fill-up)

3- Measure your out-line flow and group head flow mine is (out: 50ml/s, group: 28ml/s)

4- You will still hear some hissing (it is not totally silent) and this is due to the manifold

5- You should have static pressure from your water source otherwise please do not do it! In my case, I use a pressure regulator to help me

https://www.amazon.co.uk/gp/product/B01MDTBBOF/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I hope I didn’t miss anything & if you have any questions I will be happy to assist

cimbali

Abdulaziz Do you have a video with sound after installing the mod ? Great mod, thank you very much !

Abdulaziz

cimbali after the mod, the pump is totally disabled and you rely on the outsource pressure

Abdulaziz

cimbali here you go

CoyoteOldMan

Abdulaziz This is literally an “express(o)” video! 😁☕

Cuprajake

I appreciate the mod, it seems like a lot of work for a few seconds silence 😂 and that’s coming from so one quite sensitive to sound.

My I ask what you do to treat your water now that the machine is plumbed in?

Abdulaziz

Hello Cuprajake, no I did not do the mod because of the sound :), and it is not hard nor complicated. Let me explain “my” issue before the mod.

The gear pump(ish) that we use in the leva depends on pstat which is annoying to “me”. I don’t want my pressure managed by switching on and off. My brew style and taste include a long pre-infusion; so, I want a consistent pressure above my puck + it is fun!

At least for me, now I have a better & more consistent pre-infusion. I can easily change the pressure at any moment.

I was wondering since I got my machine why didn’t Paolo allow users to control the pump from the touch screen to set pressure and use voltage instead of pstat? Or just drop a regular rotary pump for better performance also easy-adjust

Cuprajake

here’s the ims basket, I’m still getting a slight donut effect due to using a 54mm tamper in a 55mm baske

DavecUK

A little bit tighter on the grind 😉

Cuprajake

I presume cost re the rotary pump there not cheap

I understand your reasoning with the pre infusion,

I’ve never plumbed a machine in for fear of bad water going into my machine

Abdulaziz

Cuprajake well, I don’t direct connect my machine to house plumbing. I use RO system in the kitchen to filter and control my TH and TDS and use this water to fill a tank under my bar. After that i have a system using the tank with a bwt bestmax filter to feed machine and a tap for my kettle 👌🏽 It is not a fancy setup my it does the job perfectly

Cuprajake

That’s perfect

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