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Brew pressure fluctuation while machine is idle ??

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Link to "Brew pressure fluctuation while machine is idle ??"by rudedude on Sat Apr 29, 2006 2:39 pm

Hi,
I'm a novice to HX machines and just got my new Isomac Mondiale with rotary pump a few days ago. I just noticed the brew pressure varies between 6 - 9.5 bar while the machine is on and sitting idle over the span of 10-15 minutes. I don't recall this from the first few days, is this typical or does something need adjusting?
Thanks,
Paul
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Link to "Brew pressure fluctuation while machine is idle ??"by cannonfodder on Sat Apr 29, 2006 8:53 pm

That is normal. When the water in the pipes around the boiler heat and cool with the boiler cycles, the ambient pressure increases and decreases.
Dave Stephens
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