ACS Vesuvius Evo Leva

LMSC

DavecUK Of course check with ACS before you wiggle it left and right until the legs snap off

I took that away as soon as ACS posted a message here in 2021 😁

DavecUK

Adrianmsmith he rotary pump is NOT 24v DC

It’s not, it’s actually the same one KVDW use in their Spritello, although I suspect ACS started using it first. It’s an open cage pump, the square shape allows it to be mounted in more compact spaces and it dissipates heat better.

chCoffee

I’ve been enjoying my machine for about a month now and have been super impressed with it.

![](blob:https://coffeetime.freeflarum.com/bd0170ef-421a-45dc-bcfc-33718c810d14)

Had a few weird things happen the past couple days. 2-3 shots just jumped straight from the preinfusion to the shot pull and instantly dumped the shot as the lever was all the way down. I don’t think I was touching it when it happened but a bit odd.

I also now have a steam leak here. Any easy fix without ordering parts overseas?

![](blob:https://coffeetime.freeflarum.com/6d7070ba-85f9-4ad0-9e86-0dbdfdd32d25)

Adrianmsmith

chCoffee

your links do not work

what is pi set at and what is shot start pressure set at

if they are close ie 3 bar pi and 4 bar shot start it can easily overshoot to that and start counting…..

chCoffee

Set to 2 bar.

Adrianmsmith

chCoffee

where is the leak. body or seal. if inner seal part try tightening about 1/8th turn??

Adrianmsmith

“kilo”#p82542

will update when i find a suitable solenoid….

cant be bothered to re-assemble whilst waiting for the parts.

ironically its quieter like this!!

chCoffee

I suspect it’s that teflon bit sticking out from the probe…

Elcarajillo

chCoffee It looks as if the sensor is pushed down too far, the curve / bend appears to be distorting the

seal. Lift the sensor slightly before tightening the nut.

chCoffee

Well what was not a huge deal yesterday has ruined all my shots today! The pump pressure doesn’t seem to be reading when the pump activates or maybe the pump is failing? I’ll upload a video shortly

chCoffee

Pressure goes to zero and stays there when I pull the lever. Then it triggers the pump but since it pulses it’s like it gets a signal to dump since it’s below my set pressure.

Adrianmsmith

chCoffee

See video to eliminate part of the issues you have

Check what your pre to brew is.

If its not there, upgrade the firmware

If it is, its currently probably set around 4 to 5 bars

chCoffee

Changing it to manual mode, the pump just slowly pulses but it takes quite a while to pump up to preinfusion pressure. Definitely something going on.

Adrianmsmith

chCoffee a better video of a full shot from further back so we can see the full story would help

Also upgraded firmware so you can change shot start time set point will help

If its not already set pre infusion to 1.8 to 2.0

Youtube do not charge for hosting by the millisecond!!

chCoffee

How do I upgrade firmware? Can I do it myself?

Adrianmsmith

Best to email maria, telling her what your current firmware is. Look at left hand screen just after powering on….

I’m being vague as i don’t know the setup of the server and if its ready for random requests.

Up to a certain firmware version, the tech at ACS needs to see the machine log in and send specific files to update to a version that has auto update capability. I’m unaware above what version has auto update capability so not worth going over the procedure again here.

Happy to help if you get the go ahead from Paulo via Maria and if things then need clarification …

chCoffee

Ok you’re right. What’s happening is the pump is out of control and it just spikes to 5bar or even 6 bar and triggers it to move to the next step.

there is no consistency with the pump the past 3 days. Sometimes it hits the correct preinfusion, often times not. It will go to 2-3-4 and then when I pull the lever down it will do the spike, but not always.

DavecUK

chCoffee there is no consistency with the pump the past 3 days. Sometimes it hits the correct preinfusion, often times not. It will go to 2-3-4 and then when I pull the lever down it will do the spike, but not always.

There could be a problem with the one way valve not seating properly and depending on the firmware, holding down the middle button for a while (If I remember correctly) should take you to a screen where you can check the max pressure for the machine to change from preinfusion to brewing. If that’s too low, you can have a situation where the machine thinks it’s hit the brewing phase, then when the pressure drops and the vent solenoid opens.

Set the changeover pressure to 9 bar.

Re below, the version he has, does have the auto update facility.

Up to a certain firmware version, the tech at ACS needs to see the machine log in and send specific files to update to a version that has auto update capability. I’m unaware above what version has auto update capability so not worth going over the procedure again here.

chCoffee

Something is definitely up with the pump. Set it to manual mode and during preinfusion it hit 10bar somehow. Will try to post another video soon.

Adrianmsmith

chCoffee

The pump does not know what mode the machine is in. It just pumps on demand . The mode only sets the method you will use to end the shot or trigger the dump solenoid. The so called pre infusion pressure sets the pressure at which the pump will turn off. Its just a dumb pump 😚😁

Have you requested information to update the firmware.

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