bubbaD wrote:My question re. Manual is, with the PID at the brew boiler, what kind of Pre-Cooling Flush can I expect?
The E61 group temperature will still change over time, hence the need for a small flush, just enough to bring back the whole group to boiler temp (you don't need a long flush as with HX machines, to flush the HX overheated water). Also, if you read through the buyer's guide for the Domobar Super (
http://www.home-barista.com/vibiemme-do...eview.html), the flush should be shorter on the Vibiemme DB than on other E61 DB, as they use a flow restrictor:
The Super has a flow restrictor in the upper thermosyphon line. That keeps the group temperature in check even during extended idle periods. My machines idle group temperature stabilizes at 200F give or take a degree. Even with idle periods in excess of four hours the group never got over 202F according to the thermometer I fitted into the grouphead water path plug bolt.
The required flush should then be pretty short and could be assigned to one of the programmable volumetric buttons of the Electronic version.
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Louis