my apology
I too often presume that 'all' are familiar with a pump so often discussed
I sourced it, and with the agreement of PanWorld put the pump into an application for which it was not suited
lots of failures ensued, the pump head got redesigned; Ver.2 eliminated the pump head problems
remaining are some undefined (to me) electronic problems which seem to result in a few failures
as I said, a 'good' pump, just not on a par with Laing from a reliability aspect
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