Vibiemme Domobar with high brew pressure - Page 3

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Randy G.
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Joined: 17 years ago

#21: Post by Randy G. »

I believe that you have a single boiler machine (no heat exchanger and you have to turn on a switch to go from brewing mode to steam mode, then turn that switch off when you want to brew and then flush some water through to refill the boiler... is that correct?).

If steam is getting into the reservoir during steaming mode, it is most likely getting past the pressure relief valve. That would indicate a problem which may be something like one of these:
- the valve is set too low
- the pressure gauge is incorrect
- there is scale that is flaking and occasionally causing the valve to stuck
- the valve is worn and needs to have the spring and piston replaced or the entire valve replaced
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