Re: [RE-wrenches] Pump power

Hmm, The SQF and SQ series pumps are soft start! Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail offgridso...@sti.net [2] text 209 813 0060 On Tue, 22 Sep 2020 12:46:46 -0700, Kent Osterberg wrote: The Grundfos 16SQF-10 will give

Re: [RE-wrenches] Pump power

The Grundfos 16SQF-10 will give you 12 to 13 gpm at 230 feet. But that is working at the upper edge of this pump's lift rating. Not sure that meets your definition of most of the 20 gpm. The maximum output current, 50 A, of the inverter system equals the locked rotor amps of a 2 HP motor.

Re: [RE-wrenches] Pump power

Hi Bill I would not recommend the Sqflex as it does have that gpm/height possibility but would recommend the Grundfos SQ. The 22SQ15-220 will do what you want. 1.5hp, soft start, 240vac, way less expensive, uses a bit more power. Jay Peltz power. > On Sep 22, 2020, at 1:10 PM, frenergy

Re: [RE-wrenches] Pump power

Go look at grudfus SQFlex they can go pv direct or AC in Jerry On Tue, Sep 22, 2020, 12:10 PM frenergy wrote: > Wrenchers, > > We're upgrading an off-grid water system. Dynamic head > while pumping at 20 GPM is 150 ft from water level to wellhead and then > its 85 ft vertical to

[RE-wrenches] Pump power

Wrenchers,             We're upgrading an off-grid water system.  Dynamic head while pumping at 20 GPM is 150 ft from water level to wellhead and then its 85 ft vertical to storage tank so 235 ft total head to open discharge.  We would like to get most of that 20 GPM, we need to know if

Re: [RE-wrenches] Pump LCBs

HI Chris, Have you tried Sun Pumps? They make a lot of good pump controllers. Steve Bell Morningstar Tech Support sb...@morningstarcorp.com On Wed, Feb 28, 2018 at 1:22 PM, wrote: > Dear people: > > I have a fellow looking for a supplier of LCBs for their PV pumping >

Re: [RE-wrenches] Pump LCBs

Hey Chris, Might be a long-shot but check with Frank at BZ Products. Rings a bell but can’t think why. Larry Crutcher Starlight Solar Power Systems On Feb 28, 2018, at 1:22 PM, ch...@oasismontana.com wrote: Dear people: I have a fellow looking for a supplier of LCBs for their PV pumping

[RE-wrenches] Pump LCBs

Dear people: I have a fellow looking for a supplier of LCBs for their PV pumping projects; here are the specifications. Nominal voltage, 48V; nominal PV input 48V; maximum PV input 60V; max output voltage 60V; max output amps 10A; in a Nema 4 enclosure; rhe most important is to have an early

Re: [RE-wrenches] Pump ideas

-wrenches Subject: Re: [RE-wrenches] Pump ideas 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

Re: [RE-wrenches] Pump ideas

. Brian Teitelbaum AEE Solar *From:* RE-wrenches [mailto:re-wrenches-boun...@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

Re: [RE-wrenches] Pump ideas

Jay Will a Grundfos Mark III MQ3-45 work? With an added foot valve/screen. It comes in 120 or 240 volt and 3/4 or 1hp. Has a built in pressure tank, but I suggest adding an external P/T. Thank you, Maverick Maverick Brown Maverick Solar Enterprises, Inc. SunFlow Systems Office:

[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

[RE-wrenches] Pump end repair needed_helical rotor SQFlex

Hello, Wrenchies~ I supplied the Grundfos SQFlex 11 SQF-2 helical rotor pump to a client back in the good old days before dear Grundfos decided us solar guys weren't good enough to shepherd their pumps. Serious drought caused the well to dry up; the pump got pulled but did not get a

Re: [RE-wrenches] Pump end repair needed_helical rotor SQFlex

Hi Mick Have you tried preferred pump here in ca? Jay Peltz power Sent from my iPhone On Oct 9, 2013, at 9:11 AM, Mick Abraham m...@abrahamsolar.com wrote: Hello, Wrenchies~ I supplied the Grundfos SQFlex 11 SQF-2 helical rotor pump to a client back in the good old days before dear

Re: [RE-wrenches] Pump end repair needed_helical rotor SQFlex

/ -Original Message- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org]On Behalf Of Mick Abraham Sent: October 9, 2013 9:12 AM To: RE-wrenches Subject: [RE-wrenches] Pump end repair needed_helical rotor SQFlex Hello, Wrenchies~ I supplied

Re: [RE-wrenches] pump questions

The efficiency is higher at higher voltage. David Katz Sent from my iPhone On May 30, 2013, at 7:12 PM, Jesse Dahl dahlso...@gmail.commailto:dahlso...@gmail.com wrote: I was reading up on the SQF pump and do remember seeing something about efficiency at higher voltages. Can't remember if it

Re: [RE-wrenches] pump questions

Todd, The easiest way to do this is to use the Grundfos pump sizing software. Regrettably, it only runs on a PC. You can input the specs of the module, the head and the GPD desired and it will size the array for you. Once you know the # of modules in series you can use the Imp and Vmp derated

Re: [RE-wrenches] pump questions

Bob-O and Todd, In theory you're right, Bob-O. I find the program awkward to use, given that it thinks in some weird (Danish?) way, that I don't use often enough to remember how to navigate. But in this case my bigger concern would be how to input data for a

Re: [RE-wrenches] pump questions

Hi Todd (and Allen Bob-O), You can also do the pump sizing online, using WebCAPS from Grundfos, if you don't have a PC handy: http://net.grundfos.com/Appl/WebCAPS, then click on Sizing, and Renewable Energy Systems. You'll still need to enter module data, since their database only includes

Re: [RE-wrenches] pump questions

HI all All those 75 watt panels were really close to the same parameters. According to one catalog, it was: 4.4 imp, 4.8isc, 17 vmp, 21 voc From memory, they did poorly in hot weather, heavy voltage drop. jay peltz power On May 31, 2013, at 10:30 AM, Allan Sindelar wrote: Bob-O and

[RE-wrenches] pump questions

this question is part 2 about the customer with the used astropower 75 watt modules - he has a grundfos 11sqf-2 already set by the well driller. the input specifications for the cu200 pump controller are 30 to 300 vdc, 1400 watts, 8 amps.

Re: [RE-wrenches] pump questions

Todd, The SQF runs on 30V or more, but is happiest above 90V according to Grundfos, and I have never heard anything suggesting a disadvantage to the higher voltages. I think the 1400 watts is a theoretical maximum, and the pump will vary its

Re: [RE-wrenches] pump questions

I was reading up on the SQF pump and do remember seeing something about efficiency at higher voltages. Can't remember if it got better or worse. Jesse Sent from my iPhone On May 30, 2013, at 6:44 PM, Allan Sindelar al...@positiveenergysolar.com wrote: Todd, The SQF runs on 30V or more,

[RE-wrenches] Pump control

Wrenches, wrenchers and wrenchees, I've got a pump control question. Working on a stand-alone pumping station in Haiti. I am planning on using a Grundfos SQflex pumping system with a Cu 200 and a float switch. Also needed on site, is a small pressure pump to force water through a purification

Re: [RE-wrenches] Pump control

Mac: We've dealt with this. The best solution is altitude. If there is any terrain on which you could put the tank, you save a lot of complexity. Alternatively, can the well pump deliver into a pressure tank, pre-pressurizing the water? This would also save a bunch of extra parts.

Re: [RE-wrenches] Pump control

Mac, No, I haven't done it, so take this with a grain of salt... Here's a simple mechanical approach: have you considered a dual-action float switch on the PV input to the CU200? Check out SJE Rhombus at

Re: [RE-wrenches] Pump

I sure would put the pump near the bottom assuming the pump is rated for the submersion, perhaps 10-20' off the bottom. The only down side is the extra drop pipe and cable and that is pretty small price to add to the overall project and assures the best yield possible over the long system and

Re: [RE-wrenches] Pump

[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jeff Oldham Sent: Wednesday, August 24, 2011 11:30 AM To: ptalm...@yahoo.com; re-wrenches@lists.re-wrenches.org Subject: Re: [RE-wrenches] Pump I sure would put the pump near the bottom assuming the pump is rated for the submersion

[RE-wrenches] Pump

Does any one know of a source for a reliable 230 vac submersible water pump that will pump a gallon per minute at 300 feet ? Thanks. Peter Talmage, P.E. ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options

Re: [RE-wrenches] Pump

We've had very good service from Sunpumps: http://www.sunpumps.com/ProductsClient.aspx 800-370-8115 Larry Crutcher Starlight Solar Power Systems 11871 S Fortuna Road, #210 Yuma, AZ 85367 la...@starlightsolar.com (928) 342-9103 On Aug 23, 2011, at 11:54 AM, Peter Talmage wrote: Does any

Re: [RE-wrenches] Pump

I just worked on an off-grid system that used this pump: http://www.google.com/m/url?client=safariei=MAlUTtDzMoOGNtjNo7QDhl=enoe=UTF-8q=http://www.pexuniverse.com/grundfos-10sqe15-330-deep-well-pump-96160187ved=0CBcQFjAAusg=AFQjCNH4JSSyAs8D8NDHI143TWYsi0zS6g Sent from my iPhone On Aug 23, 2011,

Re: [RE-wrenches] Pump

You should be able to find a 1/3hp or at most a 1/2hp AC sub. pump that will be close to 2gpm and you can choke it down to 1gpm with a gate valve, but it would likely be better (and more efficient) to run wide open and rely on low water protection to manage just that. From the Solar, Wind and

Re: [RE-wrenches] Pump

-wrenches] Pump I just worked on an off-grid system that used this pump: http://www.google.com/m/url?client=safariei=MAlUTtDzMoOGNtjNo7QDhl=enoe=UTF-8q=http://www.pexuniverse.com/grundfos-10sqe15-330-deep-well-pump-96160187ved=0CBcQFjAAusg=AFQjCNH4JSSyAs8D8NDHI143TWYsi0zS6g Sent from my iPhone On Aug 23

Re: [RE-wrenches] Pump

From: t...@wagonmaker.com t...@wagonmaker.com To: RE-wrenches re-wrenches@lists.re-wrenches.org Sent: Tuesday, August 23, 2011 7:29 PM Subject: Re: [RE-wrenches] Pump The first question that ought to be asked here is the state of the well.  Is 300 feet the static water level

Re: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz

/ .. - Original Message - From: Jeff Lahl To: 'RE-wrenches' Sent: Sunday, March 07, 2010 6:48 PM Subject: Re: [RE-wrenches] Pump choice - Grundfos or Lorentz;distributers of Lorentz Bob, Innovative Solar is one company that can help you with the Lorentz pumps. 866

Re: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz

Bob, Warren is referring to problems with Lorentz that showed up 5-7 years ago. There was a problem with rubber that occurred only in some kinds of water. It took a long time to track down. It was solved and reliability has been high ever since. That's what I've heard from several

Re: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz

I have 11 Lorentz systems in the field. The biggest problems I had were with the controller. Infant mortality, failure within the first 3 months and the float switch circuit failing were some of the issues. I also ran into the rubber problem that Windy mentioned. So I switched to Grundfos. 16

Re: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz

...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Bob Clark Sent: Sunday, March 07, 2010 7:22 AM To: re-wrenches@lists.re-wrenches.org Subject: [RE-wrenches] Pump choice - Grundfos or Lorentz; distributers of Lorentz Wrenches: I know from searching the archives