So this hiss/drip/hiss started some time ago and I just used the stethoscope-method to find where it comes from.
It comes from this, that I think is the pressurestat.
On top of it is a tube.
This tube goes into a chute down to the driptray. The chute is hot from the boiler. It almost constantly comes water from this tube and it drips down the warm(hot) chute and the hiss comes from the impact of the water on the chute.
If I squeeze the tube the sound is gone, if I release - it comes back.
I didnt have this before. Basically I want to know: x Is there any danger (with the explosion in the cafe fresh in my mind and having now 2 kids in the house) x Is it normal? x If not, what can I do? Clean....replace? x Should I continue to use the machine? Or let it be.
I also have a youtube film of it, but it came out pretty bad since there is some background noise which makes it sound as there is a noise (the room) even when I squeeze the tube but its really silent irl.
The p-stat is on the side, the valve body appears to include the boiler safety valve. The hiss is from steam escaping from the safety valve. There are a couple possible reasons, it has an obstruction that is keeping it from closing completely, or your boiler is running at an exceedingly high pressure. So check the pressure gauge, if you are above 1.8 bar (the pressure listed on the side of the valve in your picture) then you definitely need to adjust the p-stat. If the boiler pressure is below 1.8 bar, you probably need to either disassemble and clean the safety valve or replace it.
It doesnt go above 1.5 so I took it apart to inspect/clean.
Everything looked "clean" apart from the top "valve" that the tube producing the hissing comes from. Looked like something white inside so I cleaned it with a needle and its now in a cafiza-bath for a while.
Something happened tho, that i need to ask you guys about.
When I tried to get it from each other it was very stuck and I accidentally dented the pressurestat. The black round housing - on the back - now has a small hole in it. It doesnt look like there is anything inside from this side (looks empty) so can I just epoxy the piece back and use it or do I need to get a new one?
Epoxy it back in with a very minimal amount of adhesive.
Your machine is fitted with a manifold assembly with all of those various components normally having their own boiler connections . . . saves space and $$. What is leaking on your machine is the top fitting which is the vacuum breaker valve - not uncommon.
Remove the valve and soak that assembly in white vinegar for 30 minutes, rinse with water and reinstall.
But as i re-read the posts, I have been given 2 different answers on what valve this is.
So is it the vacuum breaker valve or the pressure relieve valve/safety valve?
If it is the vacuum breaker, then where is the safety valve on my machine? On the bottom?
Both have a spring and some sort of seal, the lower one also have a plastic end that fits to a tube and it says "ulca" on the plastic end. Both have tubes that goes into the chute down to the driptray and they are accompanied by a tube from the OPV.
And also lol but I kinda forgot how this would fit together. Im pretty sure it is like this, but shout if it looks wrong:
(the white plastic is smaller on top and the spring goes around the very top, snug and good.)
(the little square has a rubber seal inside on the top and the spring fits nicely on the bottom)
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