ACS Vesuvius Evo Leva

DavecUK

LMSC To clarify some information and also get missing information:

What temperature is the steam boiler set to?
is the hissing periodic, each time it heats or not related?
does the hissing always corresponding to an increase to the temperature you have set?
The temperature of the steam boiler should really vary by very much when idle?

The above will help me be clearer on exactly what’s happening.

LMSC

DavecUK What temperature is the steam boiler set to?
is the hissing periodic, each time it heats or not related?
does the hissing always corresponding to an increase to the temperature you have set?
The temperature of the steam boiler should really vary by very much when idle?

Thx Dave!

130C; dropped it to 125 now.
Hissing is regular or constant - faint to elevated when the boiler heats up. It does start heating the boiler a few seconds after hissing.
I think the temp drops as it hisses. The boiler kicks-in, the hissing sound increases with it
I have seen it dropping mostly by 1C before the boiler kicks in taking the temp above the set point by 1C often.

Hope it helps!

DavecUK

Does it do it now you have dropped the temperature/pressure? What pressure in bar is written on the top of your safety valve?

LMSC

DavecUK you have dropped the temperature/pressure?

Not sure! I will check and report please.

DavecUK What pressure in bar is written on the top of your safety valve?

2.5!

Thx Dave.

LMSC

DavecUK It does hiss and the boiler fires up for a second when it goes down to 124.6-124.8. Thx

MediumRoastSteam

LMSC - you could check with a metal spoon, tissue paper or something if steam is coming out of the safety valve…

LMSC

MediumRoastSteam I took a tissue around to see if it oscillates or gets a bit of dampness. Nothing looks obvious. As you said, checking them carefully is the key. The safety valve isn’t ideally located. I will check one by one using a dental mirror. Thx mate.

LMSC

MediumRoastSteam @DavecUK

I think we have a culprit here!

Steam escaping from the bottom of the bolt as cracking noise of the escaping steam is audible. If correct, what’s the correct course of action please?

Thx

Edit :

The spoon was slightly damp around edges. Hope, it not my imagination! 😁

Thx MRS!

MediumRoastSteam

LMSC - Yes! If my eyes are not failing me, and I am not alucinating, you can see it bubbling up between 15-17s.

I shall leave it for Dave to comment, but, the procedure should be the usual:

Let machine cool down and unplug the machine;
Remove the fitting;
A 5 or so turns of PTFE tape around the fitting;
gently put the fitting back, only hand tight;
using a spanner, gently tighten the fitting further, but do not over tighten it;
Fire up the steam boiler, check for leaks.

This is on the MaraX… Same principle:

DavecUK

MediumRoastSteam Absolutely correct.

LMSC

MediumRoastSteam That bubble is well spotted. I will follow the guidelines. I am assuming that I can straightaway remove the bottom bolt of the level probe and the top part with the metal comes along with it? I have disconnected the wire connecting that probe.

Many thanks mate.

DavecUK

LMSC That’s correct…remember if there is thread locker, don’t muller it off….use a spanner and rap the other end sharply with a larger spanner a number of times to break any thread lock.

LMSC

DavecUK Knowing them, thread locker (permanent) is more likely. :-) I will keep you guys posted. Thanks

DavecUK

LMSC Knowing them, thread locker (permanent) is more likely. :-) I will keep you guys posted. Thanks

The message about thread locker has been made extremely strongly, they say they have changed, but until I see the common use of medium strength thread locker, I reserve the right to be skeptical.

LMSC

@MediumRoastSteam DavecUK All good now.

The level probe came off without any effort. Looks like the thread locker wore off. I quickly cleaned it with a bit of citric acid in warm water, and put it back as advised by MRS.

I can’t hear any hissing sound. The service boiler is a lot stable now and it doesn’t kick on as frequently as before. It does if it falls just below 125.00

MediumRoastSteam

LMSC - Well… Then that’s a good job well done!

Cuprajake

Last of the bag.

Cuprajake

Hi all

What’s everyone steam boiler pid setting atm?

Petre

Cuprajake I was about to ask for the coffee boiler. I often see 2-4 degrees overshoot at mine.

Cuprajake

Brew for me is very solid

I use these settings

and my group is 92 brew 98

Petre

Cuprajake ok you added a bit of ki on top of default which is 0, I’ll try that. Isn’t that working well for steam boiler too?

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