I have found that normal on all of my pumps with primer baskets. One
way to eliminate or reduce the slight drop is to have the downstream
valves closed off,while pump is running, then shut off pump. Clean the
basket, fill up primer pot, secure lid, turn on pump and ever so
slowly open a down stream valve until you get flow, allow pump to
keep up with whats going out, and then open any other valves....Its
really not a problem as long as the pump is pulling in the water and
its not cavitating, its still moving the same amount of water, if the
pot is filled to the brim or not. That area with air in the pot is
just space left due to air in the downstream line somewhere that
accumulated once the pump was shut down......and poses no problems
whatsoever.

On Fri, 08 Jul 2005 15:14:02 -0600, Wilmdale
wrote:

===Just installed a 500 cu. in. priming pot for a Sequence 5800 pump.
===Before turning the pump on, I flooded the line and made sure there was
===water in the pump and there was water up to the top of the little dome
===on the priming pot lid. When I turn the pump on the water is sucked
===down a bit leaving a little air in the top of the priming pot. . As
===time goes by, 10 - 15 minutes, there is considerably more air in the
===priming pot now and the water level in the pot is down a couple of
===inches. Is this normal? Or should the pot remain completely filled
===with no air in it except around the very top surrounding the little dome?
===There are two (2) 2" Tetra bottom vacuum drains feeding a 3" pipe that
===goes to within 3' of the priming pot where a reducer takes the pipe down
===to 2" which feeds directly into the priming pot. The outlet is at 2"
===until it is reduced down to 1 1/4 " into the filters.
===Thanks for your help.
===W. Dale


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