Black specks from water wand - La Marzocco GS/3 MP
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GS/3 MP about 3 years old. I noticed some black specs in the tea water recently. Since I'd had a vacuum breaker fail and an o-ring dissolve, I thought it might be residue from that. I drained the steam boiler twice. The first time there were a lot of black flakes in the bucket. After the second time, the speck were reduced to maybe one visible per cup of hot water. But then a week later, I'm seeing more of them.
The group head produces specks, but they are obviously coffee.
Is this a sign of impending doom? Common, inevitable, and harmless? Somewhere in between?
Any advice gratefully accepted,
Matt
The group head produces specks, but they are obviously coffee.
Is this a sign of impending doom? Common, inevitable, and harmless? Somewhere in between?
Any advice gratefully accepted,
Matt
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Scale buildup? Heating element? To inspect directly, you could use an inexpensive bore scope camera connected to your phone.
From Inexpensive scope camera
From Inexpensive scope camera
Dan Kehn
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