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Old 12-24-2006, 09:25 AM   #8
5thwheeler
Senior Member
 
Join Date: Apr 2005
Posts: 270
The pump should not surge but without looking at it there is really no way to tell. In both of our test units the Extreme Series pumps respond to additional water demand by slowly increasing RPM thus more output. This is a very smooth transition.
I would bet that if your pump is surging which is how a typical pressure pump reacts then you didn't get your ordered Extreme Series.
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