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Gray water from boiler of HX descale (Cuadra)
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scanfield
Senior Member


Joined: 21 Nov 2011
Posts: 181
Location: Texas
Expertise: I like coffee

Espresso: La Nuovo Era Cuadra
Grinder: Baratza Vario
Posted Sun Mar 17, 2013, 11:49am
Subject: Re: Gray water from boiler of HX descale (Cuadra)
 

1stline Said:

If you have the water softener attached, the carbon will probably not pass through the screen in the softener. With the GFI, we rule out that the heating element is damaged from a lack of water in the boiler.

Remove the water softener, and try adding some 1/2 white vinegar and 1/2 tap water solution through the boiler. Remember, 4 oz of solution max through the water wand, let the pump refill, and then repeat. Then flush with tap water. Use tap and see if problem continues. If yes, another descaling should be performed. If not, the filtered water passing through the water softener may be too much and causing this problem.

Posted March 15, 2013 link


I just ran a 1/2 water + 1/2 vinegar solution through the machine. The water that I was flushing was blue colored which I believe is just a reaction between the acid and the copper boiler.

I ran all the solution through the machine, then loaded up some tap water (not-filtered). I started flushing that through the machine, then let it sit for 30 minutes while I did something else. I came back to the machine to resume flushing the tap water through and this time, I got more of the grey water coming out of the hot water wand.

It doesn't make sense to me that as long as I'm flushing, the water is clear, but after letting it sit for 30 minutes, grey water comes out. It's too late to start today, but as soon as I can, I'm going to go through a descale cycle (last time took me 7 or 8 hours).
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scanfield
Senior Member


Joined: 21 Nov 2011
Posts: 181
Location: Texas
Expertise: I like coffee

Espresso: La Nuovo Era Cuadra
Grinder: Baratza Vario
Posted Wed May 1, 2013, 10:49am
Subject: Re: Gray water from boiler of HX descale (Cuadra)
 

I've been using my machine for most of April (descaled the first weekend of April) without using much boiler water. I've been mostly drinking shots.

Today I went to make an Americano using the hot water tap and more of the nasty brown water came out. This time I shot a short video: http://youtu.be/FaSJd16tpvM

Have you ever seen anything like this? I'm a little freaked out. Since it's a heat exchanger, I'm ok with pulling shots, but I have no interest in using the steam or hot water right now.

Is this what the water would look like if the heating element is breaking down?
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slybarman
Senior Member
slybarman
Joined: 3 Nov 2011
Posts: 366
Location: usa
Expertise: I love coffee

Espresso: La Nuova Era Cuadra
Grinder: Baratza Vario
Posted Wed May 1, 2013, 12:58pm
Subject: Re: Gray water from boiler of HX descale (Cuadra)
 

scanfield Said:

I've been using my machine for most of April (descaled the first weekend of April) without using much boiler water. I've been mostly drinking shots.

Today I went to make an Americano using the hot water tap and more of the nasty brown water came out. This time I shot a short video: http://youtu.be/FaSJd16tpvM

Have you ever seen anything like this? I'm a little freaked out. Since it's a heat exchanger, I'm ok with pulling shots, but I have no interest in using the steam or hot water right now.

Is this what the water would look like if the heating element is breaking down?

Posted May 1, 2013 link

Yuck - knock on wood, never saw anything like that. I wouldn't use the steam either.
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