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It's interesting how different manufacturers do the same job in different ways - in my VBM the pressure stat only controls the heating element and the pump motor is controlled by the water level probe in the boiler and the microswitch on the group lever. The VBM philosophy seems to be to use the pressure stat to control the boiler pressure (and hence temperature) and an OPV to regulate the pressure in the HX and group - I have to admit I'm not really experienced enough in the ways of fine coffee to say which method of doing the job is best, so I'll leave that decision to people who've been on the site for longer than me.
This is the conventional way. A pressurestat is by nature a switch which operates according to pressure. Pressurestats don't control motors or anything else in espresso machinery. They merely control switching of boiler elements. I think the OP of the quote most likely has a some wires crossed
This is the conventional way. A pressurestat is by nature a switch which operates according to pressure. Pressurestats don't control motors or anything else in espresso machinery. They merely control switching of boiler elements. I think the OP of the quote most likely has a some wires crossed
Ha ha, in his head maybe. Some dyslexia means I sometimes
focus too much on the spelling & forget to check what's being said. Lucky you are here to correct us all Chris
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