from:"Allan Sindelar via RE\-wrenches"

Re: [RE-wrenches] Water system with Grundfos SQFlex

2024-05-26 Thread Allan Sindelar via RE-wrenches

Brad,For hand installation, especially with lower flow rates, my go-to solution, mentored to me by Windy Dankoff, was SDR9 high-pressure (140 psi max if I’m remembering correctly) flexible polyethylene pipe with bronze SDR9 compression couplers and connectors to MPT. They all used a stainless steel inner sleeve that fit inside the poly pipe. I carried the fittings in 3/4” and 1” sizes. Contact me off list if you’d like some of these fittings as I described. I’m retired and no longer need them. Allanal...@sindelarsolar.comOn May 26, 2024, at 12:39 PM, Bradley Bassett via RE-wrenches wrote:Ray,Do you have a US supplier for either of these fittings? The Jentro fitting looks great, the Blueseal16 does not look like it would have much of a pressure rating. I did not find a specification.What do you all use for drop pipes for well pumps? I have a 260ft deep well with galv, but the first batch corroded through, must have been a really bad batch. The second batch has been fine for many years. I can't bring myself to use PVC which is most common, I just have seen too many issues with it. Stainless is really expensive and hard to find threaded lengths, so I used very high pressure Poly. When it's rated for 300psi it has a very thick wall and is hard to get onto fittings, but is light weight and moderately flexible. BradOn Sun, May 26, 2024 at 11:17 AM Ray Walters via RE-wrenches wrote:

Hi Brad;
I've seen a lot of leaks with barb fittings on poly pipe. I just
replace most of the poly plumbing at my place, because I just
couldn't get it to stop leaking. Black poly pipe is the lowest
cost per foot, but not quite bomb proof. Barb fittings are
really more suited for irrigation under 40 psi, where leaks are
just part of the irrigation system. Also, if the pipe is exposed
to sunlight, it can degrade and split open. Your described setup
would have sections above 100 psi, and that will really drive
leaks. There are compression fittings for the poly pipe, which
are better. Here are some examples:

Barb fittings would probably be fine towards the top at the
storage tanks, where the pressure is much lower, but at the pump,
and top of the well, where the pressure is over 100 psi, I'd be
using something better.
Good Luck,

Ray Walters
Remote Solar

On 5/26/2024 10:12 AM, Bradley Bassett
via RE-wrenches wrote:

Yes, lots of possibilities for leaks. I will be
exploring them today. Thanks for the tips for finding the
location. This setup uses 300psi 1" black poly pipe on a 25 ft
drop, and then about 1200 ft run of the same pipe up 220ft
elevation to the tanks up the hill with the house about 36ft
below the tanks with only gravity feed (16 psi). All connections
on the poly pipe are made with long stainless barb fittings with
T-bolt clamps, pretty bomb proof stuff. There is a pitless
adapter into the well casing, I will check that for sure under
pressure. I'll also fix the check valve in the pump house. I
seem to have a lot of issues with check valves, do they really
fail so often? We do not have high mineral water. I've
especially had issues with spring check valves and no longer use
them. The one in my pump house is a swing check valve
which I thought was pretty reliable. If I remember correctly,
the check valve in these pumps is not replaceable. Fortunately,
we actually have two wells, each with a 3SQF-2 pump that we can
alternate for supply. I'll let you know what I find.

Way back in the '90's we had a customer with a solar pump
that just would not perform. Even with a new pump, new
control, check this and that, it just would not pump much
water. It pumped fine when out of the well. The drop pipe
did not have any obstruction. They finally ran the pump
while it was out of the well with the drop pipe connected
and under pressure, and discovered a crack in the PVC pipe
that did not show up except under pressure. So leaks can
indeed be hard to find.

Brad

On Sun, May 26, 2024 at
8:17 AM Jay via RE-wrenches
wrote:

Hi all

Yes the pump won’t go backwards but it’s
possible there could be some leakage through the helical
coil.

But both check valves have to fail which is a
low probability.

Re: [RE-wrenches] TPM Search

2024-03-08 Thread Allan Sindelar via RE-wrenches

In my experience, trackers have never made sense in off grid residential applications. In general terms, an expensive dual-axis Wattsun tracker offers a ~35% potential increase in daily solar gain around the summer solstice, and only a 10-15% gain in winter, due to seasonal sunpath variation. Any off grid residence has maximum load in winter, not summer - for most folks summer produces an excess, if sized well for winter loads. If you need more solar input, add panels rather than a tracker. With specific exceptions, I would design for winter loads, with a pole top rack for easy (and usually one-person) seasonal adjustment. I also advised clients to set the PT rack tilt angle to latitude from around the 10th of February to the 10th of November, and latitude +15 degrees for the six weeks either side of the winter solstice, December 22. This was instead of adjusting tilt angle on the equinoxes. My installations were in the desert southwest but the principles apply anywhere. Also, my experience with Solar Rackworks has been top tier for decades. Jeff Randall cut his teeth at Zomeworks in solar’s early days, was the engineer who designed Direct Power and Water’s racks, waited out his non-compete after PLP bought DP, then started SR with 30 years’ production experience. And he was always willing to modify a design for a specific client or project. Allan Sindelar Fully retired, finallyNABCEP & Journeyman licenses expiredOn Mar 8, 2024, at 3:50 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:Spendy for the right client, Jeff and Kyle still support/sell the best trackers out there.
https://www.wattsun.com/
Dave Angelini Offgrid Solar
"we go where powerlines don't"
https://offgridsolar1.com/
e-mail offgridso...@sti.net
text 209 813 0060
On 2024-03-08 3:27 pm, Dave Tedeyan via RE-wrenches wrote:

Another one out there that is worth looking at is MT Solar.
Cheers,
Dave

On Fri, Mar 8, 2024, 5:51 PM Kent via RE-wrenches wrote:

Jeremy,I think the Solar RacksWorks TPMs are virtually identical to the DPW TPMs. My go to TPM is General Specialties; They are a solid design and I think they are easier to assemble. They also have UL listed TPMs but they have top mounting clamps, and for the life of me I don't understand the logic of of a top mount clamp on a TPM.Kent OsterbergBlue Mountain Solar
On 3/8/2024 2:30 PM, Jeremy Rodriguez via RE-wrenches wrote:

With news that PLP has dropped the TPM line, what are you all recommending for a good mount for up to 8 modules , 400 w range.
I looked in the archives, but no luck.
I thought there was someone formerly at DPW that was making them.

Jeremy Rodriguez
Solar Installation / Design
All Solar, Inc.
1453 M St.
Penrose Colorado 81240

Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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Re: [RE-wrenches] Lorentz pumps

2024-01-23 Thread Allan Sindelar via RE-wrenches

Rushi!(I still have it. It’s in storage now, as I don’t want to risk losing it. Stays on my nightstand, only one-handed operation I know… )On Jan 23, 2024, at 6:47 AM, Roy Butler via RE-wrenches  wrote:

  

  
  
Hi Jay,
  
  I get all my Lorentz replacement equipment from Genpro:
  
  https://genproenergy.com/solar-water-pump/
Roy Butler
Four Winds Renewable Energy, LLC


Education is when you read the fine print; experience is what you get when you don’t.

“The less people know, the more stubbornly they know it.”

Although no trees were killed in the sending of this message, 
a large number of electrons were terribly inconvenienced.



On 1/22/2024 8:30 PM, Jay via
  RE-wrenches wrote:


  Does anyone know if Lorentz pumps still exist in the US. 

Someone is looking for a PS200 control box. 
It seems to be intermittent 

Thx
Jay
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___List sponsored by Redwood AlliancePay optional member dues here: http://re-wrenches.orgList Address: RE-wrenches@lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgThere are two list archives for searching. When one doesn't work, try the other:https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.orgList rules & etiquette:http://www.re-wrenches.org/etiquette.htmCheck out or update participant bios:http://www.members.re-wrenches.org___
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Re: [RE-wrenches] Conergy solar module issues

2023-12-23 Thread Allan Sindelar via RE-wrenches

Chris, as an issue of concern for many on this list, don’t ask for replies to issues of this type off list, but rather here. In fashion typical of the solar coaster, Conergy was a Major Supplier for a few years before predictably imploding. Quite a few of us have installed systems with Conergy modules and could benefit from this information. Thanks! On Dec 23, 2023, at 4:48 PM, Chris Daum via RE-wrenches  wrote:Hi folks: About 10 years ago we sold some Conergy 250W solar modules.  Well, they aren’t holding up too well; does anyone have any possible warranty contact info?  I believe Soligent bought Conergy in 2014, but they are being largely unhelpful.   Please contact me off list if you have any information of use.  Happy holidays! Sincerely, Chris DaumOasis Montana Inc.406-777-4309 or 4321406-777-4309 faxwww.oasismontana.com  ___List sponsored by Redwood AlliancePay optional member dues here: http://re-wrenches.orgList Address: RE-wrenches@lists.re-wrenches.orgChange listserver email address & settings:http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.orgThere are two list archives for searching. When one doesn't work, try the other:https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.orgList rules & etiquette:http://www.re-wrenches.org/etiquette.htmCheck out or update participant bios:http://www.members.re-wrenches.org___
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Re: [RE-wrenches] Home grid stacked battery heating

2023-11-05 Thread Allan Sindelar via RE-wrenches

I did this modification to a 16kW Blue Ion LiFP bank during installation, following this guide, Darryl. Blue Planet had sent me this. Shortly after initial installation a plumber had installed an electric space heater in an unheated space with water pipes, which of course soon drained the batteries to LVD, so the BMS had shut them down. The BMS won’t accept a charge until the batteries were about 1 1/2 degrees F above freezing. I did a winter service call and worked with BP tech support. I plugged the same space heater into a portable gennie and pointed it to the batteries, and as soon as the BMS registered above freezing it allowed recharge from the array. As I recall, besides the bubble/Mylar insulation (which was surprisingly easy to install) the system used an 18w terrarium heating pad in the bottom shelf under the batteries and a 9w pad on the upper shelf, controlled by an external freeze-prevention thermostat. With a sufficient whole-house array it’s proven to be a negligible load. It’s a standalone system. I don’t recall the low-temperature discharge limit; it’s quite a bit lower than the minimum charge temperature. And summer heating is irrelevant with the thermostat. The rest you can get from Blue Planet. AllanOn Nov 5, 2023, at 2:03 PM, Darryl Thayer via RE-wrenches wrote:Great site, Allan, but many facts still need to be included. Was there a discharge or charge going on? How much power was being drawn by the heaters? If this is for a standalone system, energy consumption is very important. What is the lower temperature cell discharge limit of Blue Planet? What concern was taken for the summer and overheating? What are the blue planet-specific heat and weight of the batteries? More questions, but I doubt if anyone else is interested. Thank you.On Thu, Oct 26, 2023 at 11:49 AM Sindelar Solar via RE-wrenches wrote:

You might be able to get some ideas from this. It's worked well for
me on one job.
Allan

On 10/25/2023 2:24 PM, Dana Orzel via
RE-wrenches wrote:

I
know we have had this run thru before & wanted to see if
any new options for heating LI batteries.
I
have an 8 pack of Homegrid LI batteries that is off grid
with Radian 8048a. Originally, they were not going to be
there for the winter, now it is a possibility they may
visit. Plenty of solar 6KW+, hopefully generator back up
waiting on delivery currently.
Currently
located in main room high ceilings/log cabin.
Looking
at creating an insulated closet & using terrarium
heaters controlled if over 51volt heater on AC from
inverter. Or just boxing in with 3-4” of blue board
Styrofoam….
Has
anyone else done something similar?
Has
anyone done this & it did not work?
Thought
& suggestions…..
_
Dana
Orzel GREAT
SOLAR WORKS!
C
– 208.721.7003 E – d...@solarwork.com
W
- www. greatsolarworks.com www.solarwork.com
“Responsible
Technologies for Responsible People since 1988!”

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Allan Sindelar
al...@sindelarsolar.com
RETIRED

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Re: [RE-wrenches] Magnum problem

2023-10-31 Thread Allan Sindelar via RE-wrenches

Ron,You didn’t say whether the 4448 is a PAE or the original AE; at 4,400 rated watts, I’m assuming that it’s a PAE, meaning split-phase 240. Your 2,000W Honda has a 120V output, and I suspect that the 3,800W Champion does too. Have you taken this into consideration?Many years ago, one of the selling points of the early PAE series was that it could charge from a 120V source. I have no idea if this is still true, but it’s worth verifying (along with the AC input connection and any specific charge input settings) before you make that 6-hour trip. Allan Sindelar-retired-On Oct 31, 2023, at 8:11 PM, Jerry Shafer via RE-wrenches wrote:Wrenches RonFirst l would think tech support already asked you this but.I have seen this with outback, What is the incoming voltage and freq, the Honda should be fine but the other hard to say. Frequency is very important to be right otherwise the inverter will sit and wait, voltage not as much. Your inverter is a 240 vac right, are the gennys also?You might want to make sure its in Gen input not grid input, gen is wider. With your little gennys it might latch up and disconnect quickly due to either going out of range.With gennys always use a pf of .8 and go down from there so a 3 k genny charging should be around 1200 watts.FuntimesOn Tue, Oct 31, 2023, 9:38 AM Ron Young via RE-wrenches wrote:Hello Wrenches,I am completely stumped. I built a Magnum 4448 panel for a client and it was installed by an electrician. It was thoroughly tested before going out the door on all functions and pre-programmed for the off-grid site. Electrician just had to hang it on the wall and make 4 connections, AC IN, AC OUT, BATTERY, PV. Somehow the system wouldn’t go into charge mode. The site is a 3 hour trip each way. The electrician was baffled, he had experience installing solar but very limited so I went to the site to see what the problem was. After spending a day checking out the inverter with two different generators, checking all the connections, AC at the inputs at the inverter and at the outputs on the breakers, and even removed the cover from the inverter to make sure some connections had not shaken loose inside the box on the long bumpy road into the property. Everything checked out. So assuming the AC board in the inverter was faulty I ordered a new unit to replace and that has now been done. SAME PROBLEM! I’m wondering now if it’s possible that the Magnum remote monitor could be the problem. It functions properly on every setting but is it possible there is an internal fault? Could it prevent the automatic charge cycle from initiating? Seems unlikely to me because the inverter can go into charge mode even without the monitor. I also tried replacing the connection cable between the monitor and inverter but no luck. The generators are both small, one a Honda 2kW and the other a Champion 3.8kW. Neither is ideal but I have had no issues with these types of generators in the past and the client has ordered a larger 10kW unit but we don’t have it yet to test. Generators have been run with Eco Mode off. Output to the house on bypass is consistent and without problem.Any suggestions - this is just confounding.RonearthRight Products - Solareagle.com___
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Re: [RE-wrenches] Old Solar Modules

2022-09-12 Thread Allan Sindelar via RE-wrenches

The Photowatt is French. Early 80s most likely. Windy Dankoff imported them for 
a few years, late 70s - early 80s. They’re remarkable modules. I had (before I 
retired) several clients still using them. Every one is still putting out at or 
close to rated output, 40 years later. The only problem I ever encountered is 
the output studs breaking off. And years ago I used to solder leads to the 
ribbons with Big Bertha - a 100w soldering iron. I made clear up front that I 
wouldn’t guarantee my repair work, but it worked every time, and never 
shattered the glass. 
The 50w Arco would likely be late 80s, as before that they were 32-35w. 
The Solarex is likely a VLX53 from the mid-late 90s. The VLX had a thin frame. 
Hope that helps. Other old timers can correct me if I’m wrong with any of this. 
Allan Sindelar 

Sent from my iPhone

> On Sep 12, 2022, at 4:29 PM, Amos Post via RE-wrenches 
>  wrote:
> 
> Hi all,
> 
> I have a few old modules I am trying to date best I can.  One is an Photowatt 
> (Arco?) 55Watt silver frame yellow backsheet, one is a Solarex 53Watt silver 
> frame grey back sheet, and one Arco 50Watt black frame black back sheet.  
> Looking for help with dates and if anyone knows of good websites for looking 
> up specs and/or dates on these older modules?
> 
> Thanks,
> Amos
> 
> 
>Amos Post
>Integrity Energy
>   W 802.763.7023
>C 802.291.2188
> ienergyVT.com
> Facebook
> 
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Re: [RE-wrenches] Magnum Inverters

2022-07-23 Thread Allan Sindelar via RE-wrenches

One caution, Jeremy. The EVOs that I used are only available in 120V input and 
output, and Magnum PAEs are split phase 120/240. 
Allan

> On Jul 23, 2022, at 3:34 PM, Jeremy Rodriguez via RE-wrenches 
>  wrote:
> 
>  We’ve ordered one to try since we cannot get the PAEs.
> I hope Magnum can resume shipping orders in the 38 weeks I was told!
> 
> Jeremy Rodriguez 
> Solar Installation / Design Expert 
> All Solar, Inc.
> 1453 M St
> Penrose Colorado 81240
> 
> Sent by Jeremy's iPhone. Sorry for typos and shorthand. 
> 
>>> On Jul 23, 2022, at 1:24 PM, Sindelar Solar via RE-wrenches 
>>>  wrote:
>>> 
>>  I have installed three of the Samlex EVO series in the last few years, all 
>> 24V units and all with Midnite E-Panels, and all have worked flawlessly. 
>> I've ordered all as preassembled units from Midnite.
>> Allan
>> 
>>> On 7/20/2022 4:34 PM, Bradley Bassett via RE-wrenches wrote:
>>> The Samlex EVO4248SP is a potential substitute. The only system panel is 
>>> the MidNite E-panel. This is a 4.2 kW split phase inverter. 
>>> Brad
>>> AEE Solar
>> 
>>> -- 
>>> Allan Sindelar
>>> al...@sindelarsolar.com
>>> New Mexico EE98J Journeyman Electrician
>>> Founder (Retired), Positive Energy, Inc.
>>> 505 780-2738 cell
>>> 
>>>  
>>> 
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Re: [RE-wrenches] Water system with Grundfos SQFlex

Re: [RE-wrenches] TPM Search

Re: [RE-wrenches] Lorentz pumps

Re: [RE-wrenches] Conergy solar module issues

Re: [RE-wrenches] Home grid stacked battery heating

Re: [RE-wrenches] Magnum problem

Re: [RE-wrenches] Old Solar Modules

Re: [RE-wrenches] Magnum Inverters

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