Wiring SQE Pumps [RE-wrenches]

[Ray Walters]

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HI Dan;

No I don't know what the stand by load is. (duh)Yea and I was just out 
looking at one last night, but it was getting late. I'll get some 
numbers, but I was interested in killing the X-240 no load draw too, and 
have it come on with the switch. I 'm thinking now that a P switch for 
on, and a flow switch for "off" might do it. Pressure drops slightly, 
pump gets power, runs until flow switch quits sensing flow, back off. I 
need to see how fast the start up is, I don't think even a 30# tank 
would have enough capacity, if the pump controller takes more than 10 
seconds to boot up and start pumping.

Ray

Dan Rice wrote:

>Ray,
>
>Since you mention it, if I was trying to use a flow switch, I probably would
>consider using a larger expansion tank -the SQE systems I've seen use a #15
>tank -I'd probably switch to a #30. I'm not sure how well the M&M switches
>can sense especially low flows. A slow leak in a faucet could end up
>draining pressure without triggering the flow switch and turning on the
>pump. Adding a pressure sensing switch would help with this problem, though
>it would have to be a switch with no hysterisis -just a contact that turns
>on below a specific pressure, and off above that same pressure, like an oil
>pressure light switch on an engine. The ON pressure would be set just below
>the normal system operating pressure, and the switch would normally be off
>when the system is operating correctly.
>
> I think your observation about not combating some phantom loads is a good
>one, especially if  there's an X240 in the system in the first place.
>Eliminating extra controls is probably worth the extra energy used by the
>system -especially since it's renewable energy and not coal or nuke. Do you
>know what the standby load is?
>
>I'm just glad I have water, never mind constant pressure. I hope Taos has
>been getting some of this rain that's been bathing Santa Fe. Sure feels
>good.
>
>Dan
>
>
>----- Original Message -----
>From: "Ray Walters" <walters at taosnet.com>
>To: <RE-wrenches at topica.com>
>Sent: Friday, June 30, 2006 10:01 PM
>Subject: Re: Wiring SQE Pumps [RE-wrenches]
>
>
>|
>| 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
>
>  
>


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