Question about Starbucks Saeco Italia Digital Barista Coffee Machine

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Steam Valve Problem

The steam knob has a problem in that the microswitch seems to be OK (i.e. it turns on the pump) but after a stroke or two of the pump it just hums as if there's a blockage. Recently descaled so that seems an unlikely cause. Wondered if perhaps the steam wand valve (diverter?) is defective. I've disassembled it but as yet have not removed the valve to examine it for defectiveness. Or am I on the wrong trail and the problem likely to be something else?

Thanks in advance for your help.


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  • Latte-less Nov 04, 2007

    Thanks JohnnyBeans, but the steam wand was clear. Using this parts diagram, I disassembled the steam valve (part #48, page 4) and cleaned parts #46 and #49 with steel wool. I reassembled the machine and did an extensive descaling and all seems to be well now. (NoLonger) Latte-less



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Make sure there is no milk residue in the steam wand preventing water from passing through.

If your valve is damaged you can purchase on at

Posted on Nov 03, 2007


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