Wiring SQE Pumps [RE-wrenches]

[Ray Walters]

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A good idea, I may try it. I just wondered, would the flow switch go 
back off , if the p tank ran out of steam before the pump got flow 
going? Or maybe a little drop in pressure delay. I guess it would be a 
matter of having a big enough pressure tank vs. the time delay for the 
pump to go through its start sequence and actually begin pumping.
 I've been reconsidering this whole issue of search mode anyway: most of 
my higher end customers with wells are going for inverter on/ no search 
mode anyway. Maybe its another phantom load we don't try and slay 
anymore.....

Thanks for your help,

Ray

Dan Rice wrote:

>Ray,
>
>Another alternative to switching the SQE controller on and off may be to use
>a flow switch. If memory serves me, the SQE system typically includes a
>small pressure tank which may have enough capacity to initiate flow in the
>main line when a faucet is opened, prior to the pump starting up. A flow
>switch in the main water line would detect that flow, and would switch power
>on the controller during flow, and off when flow stops. McDonnell & Miller
>manufactures pressure switches that may have the correct range for this
>application. Their catalog is available at
>http://www.mcdonnellmiller.com/prod/MM-825.pdf -the catalog section on Flow
>Switches begins on catalog page 102, and includes several pages of info on
>how to choose a flow switch for a particular application. I use one of their
>FS4 series switches on my conventional well pump to sense when the water
>level in the well drops and the pump sucks air -it works great in that
>application.
>
>Good luck.
>
>Dan Rice
>
>----- Original Message -----
>From: "Ray Walters" <walters at taosnet.com>
>To: <RE-wrenches at topica.com>
>Sent: Monday, June 26, 2006 3:37 PM
>Subject: Wiring SQE Pumps [RE-wrenches]
>
>
>Here's another pump question: I've recently started trying the constant
>pressure pumps from Franklin (the CP Mono-Drive and DO work on the
>SW4024) and the SQE from Grundfos. People love the constant pressure, we
>like the no surge, and higher efficiency. Here's the problem though, on
>regular pumps, we wired 120 vac to the pressure switch, which then only
>fire up the transformer and pump control when you needed water. On the
>new constant pressure setups, they use a pressure transducer, or signal
>switch, and we have to leave the transformer and controller on 24/7.
>I thought about using a 2nd regular P-switch to feed power to the
>system, but with a constant pressure system it would never reach the
>high pressure cutoff. I thought about a voltage relay that shut off the
>pump, when the controller quit sending power to the pump, but how do you
>turn it on? We thought about controlling the relay with the signal from
>the pressure transducer, but it might shut power on & off to the pump
>every second....Day/ night timer.....
>Who has the nifty way to wire this? Or just leave it all on, all the time?
>
>Thanks as alway for all your great help,
>
>Ray Walters
>
>
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