Question about EXPOBAR Brewtus Espresso Machine

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I have a brewtus lll-V (9 months old). yesterday, it began emitting a constant sound of hissing steam from the top/rear of the machine, with occasional belches of an airy popping sound, that registered with jumps to the top gauge. my hunch is that the vacuum relief valve is stuck open, which used to happen occasionally on my old expobar office control model. in that case, i opened the top to the inner-works, removed the relief valve, took it apart and cleaned it. but i can't seem to get into the top of this machine so easily...the top two screws don't free the inner cover from the chasis, and i am reluctant to turn it over and start loosening screws or nuts from the bottom. (i am not confident either disconnecting the weight-sensitive mechanism that shuts off the machine when the water is too low, since clearly it is electrically connected within.) does my diagnosis sound right? and if so...how do i safely access the vacuum relif valve? many thanks! joe henry

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That sounds more like a safety valve issue than the vent valve, that is poping because of too much pressure, try lowering the pressure stat on the machine, or replacing it.

Posted on Jan 05, 2011

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Posted on Jan 02, 2017

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