ACS Vesuvius Evo Leva

Elcarajillo

Quick mill 8 mm. 2 hole

BBritton

LMSC I have tested this before and found that your Group B setting affects this. With a higher B of 40 such as you have the more offset the temp will be from setting. It can get as far as 2′ off if you use a B of 120. I find a B of 6 works best for me and my group temps are exact and stable with very quick reset. I posted this before but seemed to get ignored.

My PID settings are for your info:

GP Kp 1.0 Ki 0.00 Kd 5.0 B 6

Coffee Kp 1.0 KI 0.00 Kd 5.0 B 150

Steam Kp 10.0 KI 0.00 Kd 5.0 B 1

CoyoteOldMan

BBritton Thanks for the tip (ahem - seeing the other conversation…). Will try this.

LMSC

BBritton With a higher B of 40

Thanks mate!

I had a B value initially set at 5. Given the B is 1/20 of C, I think, setting B at 5-6 would essentially mean we are using it as an on/off switch and not as a PID. That’s why Dave suggested B at 40. 😊

dfk41

Cuprajake I have quite a few assorted tips. Will take a look tomorrow and see if anything fits the bill matey

BBritton

LMSC I had also followed Daves suggestion of 40 to start with, but found my temps were off from set temp. So I stopped using my brain to figure out what might work and just sat there for a few hours and played with settings until I found what worked best, having no idea why, but it works. I found B was the most sensitive to change and value of 5 did not work well but one digit up to 6 made all the difference, was sensitive that way. Also 7 wasn’t too bad, quite close, but for me 6 was best overall. Hope it helps you.

CoyoteOldMan

BBritton I tried a couple of shots with B_group of 6… and I’d say that while it no longer under-shoots the target, it oscillates within 0.5 C either side of it, and then overshoots by 2 degrees after the shot (down, then up) before re-setting. In all, it seems less stable (within very reasonable bounds anyway) than with a higher B, although it doesn’t set at a lower level than target. Six one way, half-dozen the other.

BBritton

CoyoteOldMan Well that is definitely not my experience. My group temps do not vary after a shot more than .2 (obviously that depends also on brew water temp). There are no oscillations greater than .2 of the group on my machine. Maybe it is the other group settings or a problem with your machine. FYI my machine is also 220v.

dfk41

Cuprajake Everything but I am afraid

Cuprajake

@dfk41 its always the way haha

CoyoteOldMan

BBritton Good for you, is all I can say. I’m wondering if by any chance the higher UK voltage (effectively 240-245, even if nominally 230 like the rest of Europe) has anything to do with it…

Amberale

MediumRoastSteam
My reasoning for the VG1 goes like this.
I know that structurally it doesn’t matter but the flex in the EVO has always annoyed me.
The noise of the gear pump is grating and hopefully the rotary pump will be better.
Aesthetically, the group seems too big on the EVO its proportions look better on the VG1.
The extra width means the Praying Mantis wands don’t get in the way.
I am getting crossed info about whether one can bypass the water tank.
The auto stop function sounds good, I don’t mind a cleaning regime and don’t faff around with a tupper ware container.
The only downers for me is I have to rebuild my coffee sideboard as it is only 460mm deep and the area under the drip tray looks incomplete.
Hopefully the new drip tray design finishes it off a bit better or, even better a knock box/drawer is fitted.

CoyoteOldMan

Amberale whether one can bypass the water tank

There are people who have bypassed it on the Evo, so I don’t see why not. However, if you did that, you’d lose the adjustable pre-infusion pressure (or at least have it far more limited, depending on how the pressure regulation is done).

Cuprajake

Do people play with their infusion pressure?

I’ve moved it but gone back to 2bar

CoyoteOldMan

Cuprajake Not touched it from factory in 6 months - but then I find that I have more than enough parameters to play with between temperatures, grind, dose and ratio.

Sometimes, when grinding coffees that go so fine that I get grinder stall or lumpiness, I wish I could decrease the pre-infusion pressure easily, as that may help. However, even in those cases I have seldom needed to throw away shots (which may well be a sign of a non-discriminating palate…).

LMSC

Cuprajake Do people play with their infusion pressure?

I did try 2.5-3.0. Didn’t like the taste. Gone back to 2.0.

We can’t plumb the machine either - location and even if we move it, will not drill the expensive granite kitchen top!

Cuprajake

My only thing with having a mains fed system is:

Water quality

Filter cost

Leak issue/leak detection

CoyoteOldMan

Cuprajake I’d add (at least in my case) flexibility of location. My machine is on a trolley in the opposite corner of the kitchen to the sink. It was the only place where it could have gone without massive disruption, and plumbing in would have been messy in any case (granite top).

« Previous Page Next Page »