[RE-wrenches] Pump ideas

[Brian Teitelbaum]

Jay,



Is that 140 “feet” of head, or really 140 psi (about equal to 323 ft of
head at sea level)? I’ll assume the 140 psi



And I’ll assume that you want to run the pump PV-direct, without batteries
or an inverter.



Can the “well” be dug deeper? If they can dig it out another few feet or
so, creating a deeper pool, that would keep the drawn-out water much
cleaner



You might want to look at the Grundfos CRFlex surface pumps. They have
motors with the same AC/DC voltage specs as the SQFlex pumps, but they also
have a control panel where you can adjust the motor speed. These pumps do
have higher water flow-rate specs, but maybe you could adjust it down
enough to get the 3-4 gpm rate. According to the pump chart, the CRFlex
model 1-17 will pump about 4 gpm at 328 ft of head with about 750W of
power. Unfortunately, I don’t have enough experience with these pumps to
know for sure about the ability or limitations of adjusting the motor
speed,  but I am looking for a Guinea Pig. (If any of you fine Wrenches out
there have any experience with adjusting the CRFlex motor speed, please
contact me off-list)



Jay -  contact me off-list if want to discuss using one of these pumps.



Brian Teitelbaum

AEE Solar







*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *Jay
*Sent:* Tuesday, August 02, 2016 9:44 AM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Pump ideas



Hi all



I've got a pump choice question



140psi lift

3-4gpm max

12' suction out of shallow well

2' water depth in well

2' diameter well

Slight sediment, clay mostly.



120/240vac power



Submersible won't work, too shallow

Slow pump I'm concerned about filter changes

Surface pump makes most sense.



Any recommendations?



Thanks



Jay
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