ACS Vesuvius Evo Leva

Adrianmsmith

A few thoughts for evo2 and vostok owners who have the solenoid valve to dump the remaining water at the desired shot end .

The burning question “ how often should i back flush”.

The simple answer. Its not really necessary!!

4th december 2024 i had a look at the back of the shower screen and inside the cylinder.

30th march 2025, this is what i found.

Gave it a quick clean anyway

This is a minimum 3 shots per day so approx 350 shots minimum without doing anything but pull shots.

The bottom piston seal was in need of a smear of molykote.

Lever Action was smooth this morning. its silky smooth now again!!

Grunta

I have a little leak from where the 90-degree fitting comes out of the boiler and goes into the copper pipe, once I take it out what would be the proper sealant to use. Thanks in advance for your help.

Adrianmsmith

Grunta

Ptfe tape is about the best.

Ive never had anything remotely similar though so could he wrong 🤪

You need a medium weight tape.

Do not be tempted to over tighten the fitting.

If its tight and just past the 90 degree spot you need start again with more tape. Count how many wraps so you get it right the second time.

Will say this again as it is important. DO NOT be tempted to over tighten it or you will regret it!!

Simple fix. Big mistake if you get it wrong 😎😂

Will answer your next question tomorrow about how to remove it. Its easy btw . BUT Do NOT try to do anything with the back of the valve the pipe goes to .

Grunta

Adrianmsmith Thanks for that, I pretty much thought it would be thread tape, but pays to do it properly the first time.

Adrianmsmith

Grunta

Maybe not so obvious but prior to working on it, after making a coffee(!) turn the power off and draw quite a bit of water from the boiler through the water valve.

Having studied it i thought it looked like a lot of work to remove the pipework in to the elbow . And as i said above, my opinion, do not think of removing the pipework from the back of the valve .

My solution . Drain as above . Turn machine on its side and LOOSEN the 3 nuts (dont remove them) just enough to give enough slight movement to get the pipe out of the elbow

I tightened the 3 nuts and replaced the bottom around 3 weeks later 🤪

Grunta

Adrianmsmith I’m not sure if we are on the same page, the fitting that is slightly leaking is the one on top of the boiler, with the copper pipe coming out of it.

Elcarajillo

Also use an appropriate sized spanner on the FLATS of the elbow -don’t grip near the thread.

—

Adrianmsmith

Grunta same page, same book. 🤔🤗

Sleep on it. 😁

I will read tour alternative solution with interest and possibly egg on my face……

And dont forget to remove the nut on the adjacent elbow as per picture.

P.s. copper isnt as flexible as polyethylene.

rxmnt

Adrianmsmith I have a hissing sound coming exactly form the elbow fitting you have removed in that picture.

Currently managed to unscrew the nut, but stuck on getting the pipe out of the elbow, when I stumbled upon your post.

Do I understand you correctly that I need to loosen the boiler screws on the bottom and unscrew the nut of the other elbow to be able to get the pipe out of the leaking elbow?

Grunta

All sorted, I know what you were saying, thanks for the help

Adrianmsmith

Grunta

Ok, so it was just the olive not sealing and required ⅓ turn on the nut to seal it?

I guess theres 2 sides to evert elbow 😂😂😂 sorry!!!

Grunta

Adrianmsmith No, it was the threaded piece that went into the top of the boiler, with the copper pipe coming out the other end.

Adrianmsmith

Grunta

Ah OK, good you got it fixed. out of interest, im intrigued how you removed it, assuming my method was not necessary. Maybe the production units ae a different arrangement for the plumbing?

Grunta

There was just enough flex to very slowly get the pipe out of the fitting. As you say the plumbing maybe different on mine.

Adrianmsmith

Grunta

Thats good to know. I had to create the flex as described . Was otherwise rock solid 💪🏼 😁

Grunta

Does anyone have a parts diagram for the boilers on the ACS evo leva2, I fixed my first hissing steam leak, but now I have another sound somewhere like the first hissing steam sound, but very hard to pinpoint it.

DavecUK

Grunta Does anyone have a parts diagram for the boilers on the ACS evo leva2, I fixed my first hissing steam leak, but now I have another sound somewhere like the first hissing steam sound, but very hard to pinpoint it.

Paulo will have the cad of the boilers and their fittings, he should be able to send you a screenshot….send an e-mail to Maria, NOT Paolo.

Adrianmsmith

Grunta

I’m intrigued how that will help you when you have all the information you require with the machine right in front of you.

A steam leak is easier to find with the machine heating and cooling, not simply idling

Tal

DavecUK

Hi Dave. Do Paolo and Maria use the same email address?

Been waiting for a response from Paolo for a new vac breaker for the Vesuvius (not leva)

Grunta

Adrianmsmith I have been checking while it is on and hot, just helpful to have parts diagrams for the future.

LMSC

A dentist mirror or a tissue should help, if you haven’t already.

Grunta

LMSC I’ve tried all those, plus I have a long bendy inspection camera, it’s not bad at the moment, will have to take most of the covers off, but can’t be bothered at the moment.

Adrianmsmith

Grunta

With my slight leak the other month it was self healing once hot.

Only visible and leaking as it past 100 to 120 degrees.

Once it gets hot, to investigate, turn power off and open hot water outlet until it drains. Then start again……

DavecUK

Grunta How old is your machine (when was it manufactured), as although Jake is correct…he is only correct for earlier models. The Vostok has used compression fittings on the back of the steam/water arms for a while now, probably 6 months or so. The Evo doesn’t have space to allow the use of them.

P.S. Even before those dates of compression fittings (on Vostok), flexible sealant began to be used around 2 to 2.5 years ago which also makes the problem far less likely to occur. It was caused by the expansion and contraction of the metals and a permanent (non flexible threadlock). The semi permanent is not only much easier to remove, but is flexible which alleviates the problem.

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