Surging house water pumps

[freewill2008]

Rick - I'll answer what I can.
>
> Bob, the pumps I put on are the same ones that came off; Shurflos. So if the
wiring worked for the old ones would that mean it would be adequate for the new
ones?

Do you know the new and old pump model names/numbers?

If the pumps are the same model then the wiring should be fine. In our case the
new Shurflo "Extreme" model draws twice as much current as the old one. There
are a lot of Shurflo models. Expect 5-8 amps for the smaller Shurflos, 10-14
for the the high output types.

Regarding an accumulator, if the old pumps worked without one and the new pumps
don't, then the new pumps may have more output (which, BTW, means they probably
draw more current). Adding an accumulator is easy because it only requires a
'T' fitting after the pump. Closer to the pump is good, but house systems often
have long distances between the pump and accumulator. In any case, the
accumulator T should be between the pump and the first faucet.

Food for thought: In 1993 Shurflo pumps did not have much output and did not
draw much current. This probably explains why BB used two. A single
high-output Shurflo Extreme model would easily supply the whole rig. I can wash
the car from our tank and Shurflo Extreme while there is still enough pressure
and volume at the inside faucets.

Bob Griesel '84 FC31 WLII WA

>
> Pete and Wayne, regarding adding an accumulator tank. That sounds
complicated to me.  I had previously had one pump that always worked good and
didn't surge. Maybe with two working such is needed?
>
> Greg, regarding the back flow valve; instead of removing and plugging lines,
would simply shutting a pumps incoming and outgoing valves off suffice?
>
> Ralph, newby question. Where is the Sporlan located?
>
> Rick
> 1993 WLSA
> in Iowa (where the water at least works, and it's too cold to putz with it
quite yet this morning.)
>
> Â
>
>
>
> ________________________________
> From: gregory O
> To: WanderlodgeForum@yahoogroups.com
> Sent: Thu, November 12, 2009 1:53:38 AM
> Subject: [WanderlodgeForum] Re: Surging house water pumps
>
> Â
> it sounds like one of the new pumps has a bad backflow valve. remove the lines
from one pumpat a time and plug the ends with a bolts and hose clamps.
>
> --- In WanderlodgeForum@ yahoogroups. com, "davisgr" wrote:
> >
> > What can I do stop my house water pumps from "surging"; runs for a couple of
seconds, hesitates a moment, runs for a couple of seconds, etc.? Both pumps are
new. One does it worse than the other, depending on the load being put on it. I
have tried running all faucets at once for a while. I have tried opening the
faucet valve located in the same compartment and draining water from there.
> >
> > Rick Davis
> > 1993 WLSA
> > Loudon, TN
> > (at HWH in Iowa tonight-getting colder!)
> >
>