Cloudy water in the boiler
I have a Rocket V3. Great coffee, but today I refreshed the boiler and was surprised to get a jug of cloudy water.
I will drain more out but what is causing this. The water is softened and filtered. It is just quite cloudy and stays cloudy but with no metallic shimmering.s.
If you run water now is it clear? I get that initially and have put it down to manky water in the hot water tap and plumbing. The boiler water comes out a little cloudy and then clears, i presumed maybe because it had been held at pressure.
Other thoughts from anyone?
I sometimes see this after heavy filtering, I haven't had much experience with it in coffee machines, but some filters leave tiny tiny bubbles in the water making it appear cloudy. Easy way to test for this is to leave the cup sit for 10 minutes. If it was just bubbles they'll be gone and the water will be clear, of not it will likely still be cloudy or have sediment on the bottom of the glass.
I've heard of this happening after steaming, milk finds it's way into the steam wand and is drawn into the boiler contaminating the boiler contents.
From Alan Frew in 2004.
"I've just finished the VERY disagreeable process of
cleaning out 2 milk contaminated boilers. This happens when the
steam wand of an espresso machine isn't flushed clean after use;
as the boiler cools a vacuum forms and sucks the milk back into
it. It can happen even with commercial machines, especially when
steam wands are left inside water filled milk jugs to soak off
dried milk. High temperature processing results in something best
described as "Foul Gunk" (think rancid baby poo, in colour,
texture and odour!) Fixing this is such a rotten job that the
next one will cost $66.00 inc. GST, so be warned!"
I don’t think it is milk drawn back as I vent the steam after each steaming. I will evacuate the boiler again. I do that by tipping the Giotto slightly towards the hot water outlet side, turn off the unit and open the hot water valve and let the pressure nearly empty the boiler. I will do this several times. We will see!
Thank you all for the encouragement. I means a lot to me.
Please keep us informed as to the outcome.
Interesting. An anti-vacuum valve stops any vacuum forming when the boiler cools. On a single boiler machine for example without an anti-vac valve where this could happen (or a machine equipped with a anti-vac that is stuck closed), how does the milk get past the closed steam valve into the boiler?
Originally Posted by Yelta
In my experience of cleaning out milk contaminated boilers, I can only surmise that milk has somehow got into the machine's water tank.
OP's problem wouldn't be milk contamination, the smell is intense and would be noticed immediately. It's probably one of the worst smells I've experienced.
Hi dumiya, I see that you're in Perth are you in the Northern or Southern suburbs? The water is sourced differently, and have different calcium Dissolved solids content Depending on your suburb.
So it is possible that while you are softening the water, maybe it isn't being softened enough and you have calcium in the boiler?
Have you taken the hot water nozzle off and checked for calcium deposits?