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Permalink Reply by Brady on November 13, 2012 at 7:34pm

Sounds like the water supply to the machine may be restricted. Perhaps the water filter/softener cartridges need to be changed, the shutoff is turned off (either at the wall or inside the machine), or there is another water supply issue?

When the pump does not receive an adequate supply of water, it makes a really loud buzzing sound. Continued operation in this state will cause pump damage.

What does your water pressure gage read?

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Permalink Reply by Mike Sabol on November 13, 2012 at 7:55pm

Listen to Brady. I deal with this same issue at least once a day with the accounts I support. Even though changing your filters seems expensive at the time just compare that cost to rebuilding the whole machine. Which is what happens if you let issues like water quality go on for a while. Lime and scale can build up in the boiler, heat exchangers, and water supply lines quite quickly once your water filters pass their effective lifetime. Depending on the volume of espresso you do you should be changing your filters once a quarter. More in high volume situations.

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Permalink Reply by Steve O'Brien on November 15, 2012 at 2:44am

Thanks guys, I appreciate the help

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