Re: [RE-wrenches] Grundfos SQFlex

[Ron Young]

Awesome responses thank you! And yes I did mix up the IO-101 operating voltage 
with the CU200. 

So because efficiency is important we’ll keep the CU200 in the system. 

Client wants a large pressure tank because of garden irrigation so we're 
looking at an 86 gallon model so pump will not cycle as frequently and pump 
efficiency will optimize with longer running times. Aside from bulk and weight 
problems of the tank I don’t foresee any other issues. Appreciate comments if 
otherwise.

Ron Young

On Oct 20, 2014, at 7:55 PM, toddc...@finestplanet.com wrote:

> "If you are not going to be using a PV-direct arrangement, there is  not much 
> advantage in using the Flex pumps."
>  
> 
> except efficiency. i have two wells at home and the grundfos sqflex pumps 50' 
> of additional head at the same flow rate, using 30% less energy as compared 
> to the standard, 3/4 hp pump down the other hole..
>  
> and yes, the cu200's label says up to 240 vac is fine.
> as long as he has it, why not run the power through it?
>  
> todd
>  
>  
> 
> 
> On Monday, October 20, 2014 7:24pm, "Brian Teitelbaum" 
>  said:
> 
> > Hi Ron,
> > 
> > What you describe with using a pressure switch and pressure tank, and just
> > running the pump with 240 VAC, is fine. You don't need the CU-200 to do
> > any of that, if all you are doing is switching AC. The diagnostics is
> > nice, but probably not worth the cost in this kind of simple setup.
> > 
> > One issue though. The SQFlex pumps are not exactly instant-on. There is a
> > slight delay between when power is applied and the pump starts. Just make
> > sure that you use a large enough pressure tank to keep the pressure from
> > dropping too far before the pump starts filling it. You may have to raise
> > the starting pressure on the switch a little above where you set the
> > minimum pressure, to let it fall some at startup.
> > 
> > When it becomes time to replace the pump (hopefully many years from now),
> > I would just go with a Grundfos SQ straight AC pump instead of the Flex
> > model. If you are not going to be using a PV-direct arrangement, there is
> > not much advantage in using the Flex pumps.
> > 
> > Brian Teitelbaum
> > AEE solar
> >
> 
> 
> 
> Sent from Finest Planet WebMail.
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Re: [RE-wrenches] Grundfos SQFlex

[toddcory]

"If you are not going to be using a PV-direct arrangement, there is  not much 
advantage in using the Flex pumps."

 

except efficiency. i have two wells at home and the grundfos sqflex pumps 50' 
of additional head at the same flow rate, using 30% less energy as compared to 
the standard, 3/4 hp pump down the other hole..
 
and yes, the cu200's label says up to 240 vac is fine. 
as long as he has it, why not run the power through it?
 
todd
 
 



On Monday, October 20, 2014 7:24pm, "Brian Teitelbaum" 
 said:



> Hi Ron,
> 
> What you describe with using a pressure switch and pressure tank, and just
> running the pump with 240 VAC, is fine. You don't need the CU-200 to do
> any of that, if all you are doing is switching AC. The diagnostics is
> nice, but probably not worth the cost in this kind of simple setup.
> 
> One issue though. The SQFlex pumps are not exactly instant-on. There is a
> slight delay between when power is applied and the pump starts. Just make
> sure that you use a large enough pressure tank to keep the pressure from
> dropping too far before the pump starts filling it. You may have to raise
> the starting pressure on the switch a little above where you set the
> minimum pressure, to let it fall some at startup.
> 
> When it becomes time to replace the pump (hopefully many years from now),
> I would just go with a Grundfos SQ straight AC pump instead of the Flex
> model. If you are not going to be using a PV-direct arrangement, there is
> not much advantage in using the Flex pumps.
> 
> Brian Teitelbaum
> AEE solar
>


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Re: [RE-wrenches] Grundfos SQFlex

[Allan Sindelar]

Ron, 
Brian's advice is sound. 

240 vac is fine for the pump and the CU 200. The SQ series is rated 90-300 v AC 
and 30-300 v DC, although the pump is happiest at around 90 v and up.  If the 
CU200 is already in the system and paid for, keep it: the diagnostics are nice, 
and the signal circuit is nicer: without it you must independently control the 
AC input. 
Allan Sindelar
a...@sindelarsolar.com

> On Oct 20, 2014, at 8:34 PM, Brian Teitelbaum  
> wrote:
> 
> Hi Jay,
> 
> You are correct about the CU-200. It has an operating voltage range of
> 30-300 VDC and 90-240 VAC.
> 
> However, the IO-101 transfer switch is another story, and I think that is
> what Ron meant. Up until recently Grundfos was only importing the 120 VAC
> version of the IO-101, but now you can get the 240 VAC version here also
> (it's basically the European 230 VAC model).
> 
> One thing to note though with the IO-101 is that its max DC voltage is only
> 225 VDC (even though the pumps and CU-200 are good for 300 VDC), so make
> sure the PV array it's connected to is below that.
> 
> Brian
> AEE Solar
> 
> -Original Message-
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
> Behalf Of jay peltz
> Sent: Monday, October 20, 2014 6:37 PM
> To: RE-wrenches
> Subject: Re: [RE-wrenches] Grundfos SQFlex
> 
> Hi Ron
> 
> Where did you read that the CU 200 is only good for 120vac. The manual I see
> shows 240vac 50/60hz?
> 
> Jay
> Peltz power.
> 
> 
> 
> 
>> On Oct 20, 2014, at 6:21 PM, "Ron @ earthRight Solar"
>>  wrote:
>> 
>> Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
>> 11 pump and he is getting connected to the grid. He will still have his
>> battery back up charged by PV and wants to look at the most efficient way
>> to operate the pump. It seems to me that neither the IO101 or the CU200
>> really is needed and he could just wire directly to the inverter output at
>> 240v via a pressure switch on a standard pressure tank for most efficient
>> operation. Although this doesn’t give any access to the Grundfos built in
>> diagnostics that display on the CU200.
>> 
>> Would you recommend keeping a CU200 in the system or is it overkill? With
>> the CU200 the max voltage is 120 whereas without it I can go with 240v and
>> a more efficient operation… unless I am missing something.
>> 
>> Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[Brian Teitelbaum]

Hi Jay,

You are correct about the CU-200. It has an operating voltage range of
30-300 VDC and 90-240 VAC.

However, the IO-101 transfer switch is another story, and I think that is
what Ron meant. Up until recently Grundfos was only importing the 120 VAC
version of the IO-101, but now you can get the 240 VAC version here also
(it's basically the European 230 VAC model).

One thing to note though with the IO-101 is that its max DC voltage is only
225 VDC (even though the pumps and CU-200 are good for 300 VDC), so make
sure the PV array it's connected to is below that.

Brian
AEE Solar

-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of jay peltz
Sent: Monday, October 20, 2014 6:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQFlex

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see
shows 240vac 50/60hz?

Jay
Peltz power.




> On Oct 20, 2014, at 6:21 PM, "Ron @ earthRight Solar"
>  wrote:
>
> Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
> 11 pump and he is getting connected to the grid. He will still have his
> battery back up charged by PV and wants to look at the most efficient way
> to operate the pump. It seems to me that neither the IO101 or the CU200
> really is needed and he could just wire directly to the inverter output at
> 240v via a pressure switch on a standard pressure tank for most efficient
> operation. Although this doesn’t give any access to the Grundfos built in
> diagnostics that display on the CU200.
>
> Would you recommend keeping a CU200 in the system or is it overkill? With
> the CU200 the max voltage is 120 whereas without it I can go with 240v and
> a more efficient operation… unless I am missing something.
>
> Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[William Miller]

Friends:

The IO101 will accept only 120 VAC into the auxiliary port.  This is the 
connector with the threads on the bottom of the unit.  It has a label 
indicating 120 VAC.  This will cause some confusion. The CU200 will accept 240 
VAC and it will allow you to use a float switch.  

The IO101 will not allow a float switch and there are some idiosyncrasies as to 
how it switches from solar to AC and back (or not).

William



Lic 773985
millersolar.com
805-438-5600


-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of jay peltz
Sent: Monday, October 20, 2014 6:37 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Grundfos SQFlex

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see 
shows 240vac 50/60hz?

Jay 
Peltz power. 




> On Oct 20, 2014, at 6:21 PM, "Ron @ earthRight Solar" 
>  wrote:
> 
> Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
> pump and he is getting connected to the grid. He will still have his battery 
> back up charged by PV and wants to look at the most efficient way to operate 
> the pump. It seems to me that neither the IO101 or the CU200 really is needed 
> and he could just wire directly to the inverter output at 240v via a pressure 
> switch on a standard pressure tank for most efficient operation. Although 
> this doesn’t give any access to the Grundfos built in diagnostics that 
> display on the CU200. 
> 
> Would you recommend keeping a CU200 in the system or is it overkill? With the 
> CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
> efficient operation… unless I am missing something.
> 
> Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[Brian Teitelbaum]

Hi Ron,

What you describe with using a pressure switch and pressure tank, and just
running the pump with 240 VAC, is fine. You don't need the CU-200 to do
any of that, if all you are doing is switching AC. The diagnostics is
nice, but probably not worth the cost in this kind of simple setup.

One issue though. The SQFlex pumps are not exactly instant-on. There is a
slight delay between when power is applied and the pump starts. Just make
sure that you use a large enough pressure tank to keep the pressure from
dropping too far before the pump starts filling it. You may have to raise
the starting pressure on the switch a little above where you set the
minimum pressure, to let it fall some at startup.

When it becomes time to replace the pump (hopefully many years from now),
I would just go with a Grundfos SQ straight AC pump instead of the Flex
model. If you are not going to be using a PV-direct arrangement, there is
not much advantage in using the Flex pumps.

Brian Teitelbaum
AEE solar



-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Ron @ earthRight Solar
Sent: Monday, October 20, 2014 6:21 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQFlex

Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex
11 pump and he is getting connected to the grid. He will still have his
battery back up charged by PV and wants to look at the most efficient way
to operate the pump. It seems to me that neither the IO101 or the CU200
really is needed and he could just wire directly to the inverter output at
240v via a pressure switch on a standard pressure tank for most efficient
operation. Although this doesn't give any access to the Grundfos built in
diagnostics that display on the CU200.

Would you recommend keeping a CU200 in the system or is it overkill? With
the CU200 the max voltage is 120 whereas without it I can go with 240v and
a more efficient operation. unless I am missing something.

Ron Young
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Re: [RE-wrenches] Grundfos SQFlex

[jay peltz]

Hi Ron

Where did you read that the CU 200 is only good for 120vac. The manual I see 
shows 240vac 50/60hz?

Jay 
Peltz power. 




> On Oct 20, 2014, at 6:21 PM, "Ron @ earthRight Solar" 
>  wrote:
> 
> Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
> pump and he is getting connected to the grid. He will still have his battery 
> back up charged by PV and wants to look at the most efficient way to operate 
> the pump. It seems to me that neither the IO101 or the CU200 really is needed 
> and he could just wire directly to the inverter output at 240v via a pressure 
> switch on a standard pressure tank for most efficient operation. Although 
> this doesn’t give any access to the Grundfos built in diagnostics that 
> display on the CU200. 
> 
> Would you recommend keeping a CU200 in the system or is it overkill? With the 
> CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
> efficient operation… unless I am missing something.
> 
> Ron Young
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[RE-wrenches] Grundfos SQFlex

[Ron @ earthRight Solar]

Hello water pumping Wrenches, I have a customer who has a Grundfos SQFlex 11 
pump and he is getting connected to the grid. He will still have his battery 
back up charged by PV and wants to look at the most efficient way to operate 
the pump. It seems to me that neither the IO101 or the CU200 really is needed 
and he could just wire directly to the inverter output at 240v via a pressure 
switch on a standard pressure tank for most efficient operation. Although this 
doesn’t give any access to the Grundfos built in diagnostics that display on 
the CU200. 

Would you recommend keeping a CU200 in the system or is it overkill? With the 
CU200 the max voltage is 120 whereas without it I can go with 240v and a more 
efficient operation… unless I am missing something.

Ron Young
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Re: [RE-wrenches] Diode Failure

[Chris Mason]

Corey,
A diode is a diode. Get an electronics technician to identify the correct
part and source it.

On Mon, Oct 20, 2014 at 4:51 PM, Corey Shalanski <
cshalan...@joule-energy.com> wrote:

> Wrenches,
>
> Since my previous post (see below) we have recovered the faulty modules
> and are now looking to replace the diodes in order to make them
> functional again. I have had no success sourcing replacement diodes from
> the original module manufacturer, Mage Solar.
>
> Can anyone recommend a source for replacement diodes?
>
> --
> Corey Shalanski
> Joule Solar
> New Orleans, LA
>
> ᐧ
> On Tue, Aug 5, 2014 at 10:27 AM, <
> re-wrenches-requ...@lists.re-wrenches.org> wrote:
>
>>
>> Message: 10
>> Date: Tue, 5 Aug 2014 09:03:09 -0500
>> From: Corey Shalanski 
>> To: RE-wrenches@lists.re-wrenches.org
>> Subject: [RE-wrenches] Diode Failure
>> Message-ID:
>> <
>> ca+smqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrg...@mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Wrenches,
>>
>> We recently were contacted by a customer who reported a lightning strike
>> close to his house. His online monitoring revealed that 30 of 35
>> microinverters simultaneously stopped producing power. On initial visit to
>> the jobsite we measured Voc on many modules - either 12V or 24V instead of
>> rated 36V. On a second visit we discovered that bypass diodes - either 1
>> or
>> 2 corresponding to observed voltage loss - had failed on each of the
>> faulty
>> modules.
>>
>> My question is: Can anyone support the theory that a nearby lightning
>>  flash
>> can cause mass bypass diode failure?
>>
>> --
>> Corey Shalanski
>> Joule Energy
>> New Orleans, LA
>
>
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-- 
Chris Mason
NABCEP Certified Solar PV Installer™
Solar Design Engineer
Generac Generators Industrial technician

www.cometsolar.com 
264.235.5670
869.662.5670
Skype: netconcepts
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Re: [RE-wrenches] Diode Failure

[Dan Fink]

Corey - yes, nearby lightning can zorch PV array diodes en masse, and not
always all the diodes at once. Provided they are accessible and not potted
in epoxy DigiKey can provide replacements. When the module manufacturer has
gone out of business, getting the precise specs can be impossible, but
there's nothing special about bypass diodes, the usual products should work
fine.

Dan Fink
Buckville Energy
IREC Certified Instructor™ for:
~ PV Installation Professional
~ Small Wind Installer
NABCEP / IREC / ISPQ Accredited Continuing Education Providers™
970.672.4342



On Mon, Oct 20, 2014 at 2:51 PM, Corey Shalanski <
cshalan...@joule-energy.com> wrote:

> Wrenches,
>
> Since my previous post (see below) we have recovered the faulty modules
> and are now looking to replace the diodes in order to make them
> functional again. I have had no success sourcing replacement diodes from
> the original module manufacturer, Mage Solar.
>
> Can anyone recommend a source for replacement diodes?
>
> --
> Corey Shalanski
> Joule Solar
> New Orleans, LA
>
> ᐧ
> On Tue, Aug 5, 2014 at 10:27 AM, <
> re-wrenches-requ...@lists.re-wrenches.org> wrote:
>
>>
>> Message: 10
>> Date: Tue, 5 Aug 2014 09:03:09 -0500
>> From: Corey Shalanski 
>> To: RE-wrenches@lists.re-wrenches.org
>> Subject: [RE-wrenches] Diode Failure
>> Message-ID:
>> <
>> ca+smqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrg...@mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Wrenches,
>>
>> We recently were contacted by a customer who reported a lightning strike
>> close to his house. His online monitoring revealed that 30 of 35
>> microinverters simultaneously stopped producing power. On initial visit to
>> the jobsite we measured Voc on many modules - either 12V or 24V instead of
>> rated 36V. On a second visit we discovered that bypass diodes - either 1
>> or
>> 2 corresponding to observed voltage loss - had failed on each of the
>> faulty
>> modules.
>>
>> My question is: Can anyone support the theory that a nearby lightning
>>  flash
>> can cause mass bypass diode failure?
>>
>> --
>> Corey Shalanski
>> Joule Energy
>> New Orleans, LA
>
>
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Re: [RE-wrenches] Diode Failure

[toddcory]

try digikey or mouser electronics 
 
todd
 
 


On Monday, October 20, 2014 1:51pm, "Corey Shalanski" 
 said:



Wrenches,
Since my previous post (see below) we have recovered the faulty modules and are 
now looking to replace the diodes in order to make them functional again. I 
have had no success sourcing replacement diodes from the original module 
manufacturer, Mage Solar.
Can anyone recommend a source for replacement diodes?
--
Corey Shalanski
Joule Solar
New Orleans, LA




ᐧ

On Tue, Aug 5, 2014 at 10:27 AM, <[ re-wrenches-requ...@lists.re-wrenches.org 
]( mailto:re-wrenches-requ...@lists.re-wrenches.org )> wrote:

Message: 10
Date: Tue, 5 Aug 2014 09:03:09 -0500
From: Corey Shalanski <[ cshalan...@joule-energy.com ]( 
mailto:cshalan...@joule-energy.com )>
To: [ RE-wrenches@lists.re-wrenches.org ]( 
mailto:RE-wrenches@lists.re-wrenches.org )
Subject: [RE-wrenches] Diode Failure
Message-ID:
<[ ca+smqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrg...@mail.gmail.com 
]( 
mailto:ca%2bsmqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrga%...@mail.gmail.com )>
Content-Type: text/plain; charset="utf-8"

Wrenches,

We recently were contacted by a customer who reported a lightning strike
close to his house. His online monitoring revealed that 30 of 35
microinverters simultaneously stopped producing power. On initial visit to
the jobsite we measured Voc on many modules - either 12V or 24V instead of
rated 36V. On a second visit we discovered that bypass diodes - either 1 or
2 corresponding to observed voltage loss - had failed on each of the faulty
modules.

My question is: Can anyone support the theory that a nearby lightning flash
can cause mass bypass diode failure?

--
Corey Shalanski
Joule Energy
New Orleans, LA


Sent from Finest Planet WebMail.
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Re: [RE-wrenches] Diode Failure

[Corey Shalanski]

Wrenches,

Since my previous post (see below) we have recovered the faulty modules and
are now looking to replace the diodes in order to make them functional
again. I have had no success sourcing replacement diodes from the original
module manufacturer, Mage Solar.

Can anyone recommend a source for replacement diodes?

--
Corey Shalanski
Joule Solar
New Orleans, LA

ᐧ
On Tue, Aug 5, 2014 at 10:27 AM, 
 wrote:

>
> Message: 10
> Date: Tue, 5 Aug 2014 09:03:09 -0500
> From: Corey Shalanski 
> To: RE-wrenches@lists.re-wrenches.org
> Subject: [RE-wrenches] Diode Failure
> Message-ID:
> <
> ca+smqz1c7kszuqnvzqr0mmux3f2dt6ydum40iseczr2ejrg...@mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Wrenches,
>
> We recently were contacted by a customer who reported a lightning strike
> close to his house. His online monitoring revealed that 30 of 35
> microinverters simultaneously stopped producing power. On initial visit to
> the jobsite we measured Voc on many modules - either 12V or 24V instead of
> rated 36V. On a second visit we discovered that bypass diodes - either 1
> or
> 2 corresponding to observed voltage loss - had failed on each of the faulty
> modules.
>
> My question is: Can anyone support the theory that a nearby lightning
>  flash
> can cause mass bypass diode failure?
>
> --
> Corey Shalanski
> Joule Energy
> New Orleans, LA
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[RE-wrenches] Sanyo/Panasonic Replacement Panels

[Solar Energy Solutions]

Hi All, Does anyone know where to get a replacement HIT-B195A05 Panel???  
Please contact us off list. Thanks a TON!  Andrew KoyaanisqatsiPresidentSolar 
Energy Solutions, Inc.Since 1987,Moving Portland and Beyond to an 
Environmentally Sustainable Future.503-238-4502
www.SolarEnergyOregon.com "Better one's House too little one daythan too big 
all the Year after."___
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