Yes, I forgot about them. Thank you for the reminder. If you have a
supplier of it would you contact me off list? Chris
On 9/17/2020 11:07 PM, frenergy wrote:
I will second that, Todd. I've had a Hartell MD-10-HEH mag drive
pump pumping glycol in my SHW closed loop for 23 years direct
I will second that, Todd. I've had a Hartell MD-10-HEH mag drive pump
pumping glycol in my SHW closed loop for 23 years direct powered by a 20
watt PV. It does make a little noise when your close to it...so be it.
Bill
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
I would look at the pump that Thermodynamics LTD of Canada sells.
Pretty bullet proof in my experience of 20 years of installing their
products. Don't deal with the people in VT. Call the business in
Dartmouth Nova Scotia, eh? Laing are expensive but very reliable.
March is not great for
Anyone have any recommendations as to other products like the scala2?
Thx
Jay
> On Sep 17, 2020, at 10:07 AM, Ray wrote:
>
>
> I've definitely had some Grundfos failures from the way back days, but their
> Alpha ECM circulator series has been really solid, as well as Taco's ECM
> drive
I've definitely had some Grundfos failures from the way back days, but
their Alpha ECM circulator series has been really solid, as well as
Taco's ECM drive circulators. To be clear ECM is variable speed drive
VSD, but not variable frequency drive VFD. ECM varies DC voltage to a DC
motor to
Certainly willing to look at those - I'd be happy to not mess with DC
converters and voltage spike issues.
Any specific models you'd suggest to replace El Sids in low head situations?
Howie
Howie Michaelson
Sun Catcher
NABCEP Certified Solar PV Installer™
Solar Electric & Heat Pumps Systems Sales
Look at the recent Grundfos Scala2 recall, they have sold some really
bad pumps, so AC is not always best. For Offgrid a spare inverter is often
called for because critical systems do need back-up. Many
applications/requirements are different. Grundfos scala2 pump recall
They have been
Actually best of all: you don't have to run low voltage DC circuits to
the pump room. Another thing about the ECM drive pumps, they have much
higher flow rates available than the El Cids. And if you're worried
about your old school street cred in the off grid world, they are still
Responsible People since 1988"
P Please consider the environment before printing this email.
From: RE-wrenches On Behalf Of
Howie Michaelson
Sent: Wednesday, September 16, 2020 11:29 AM
To: Dave Angelini ; RE-wrenches
Subject: Re: [RE-wrenches] Another pump quesiton
Dave,
Dave,
When my El Sids started failing years ago, I spoke with Dan and he
recommended a voltage regulator to prevent the fluctuations and spikes. I
installed one which seemed to help, but did not stop the failures. My
memory is that he didn't have much else to say at the time other than there
must
Anyone try Low Tech energy in Colorado? 800-837-3507
> On Sep 16, 2020, at 1:00 PM, Dave Angelini Offgrid Solar
> wrote:
>
> I just dialed Ivan pumps (EL Sid) and it is disconnected. Not good! Anybody
> know for sure?
>
>
> Dave Angelini Offgrid Solar
> "we go where powerlines don't"
>
Here is the new number for Ivan Labs El Sid pumps. It was busy when I
called
(561) 401-1846 [1]
Dave Angelini Offgrid Solar
"we go where
powerlines don't"
http://members.sti.net/offgridsolar/ [2]
e-mail
offgridso...@sti.net [3]
text 209 813 0060
On Wed, 16 Sep 2020 10:00:04
-0700, Dave
I just dialed Ivan pumps (EL Sid) and it is disconnected. Not good!
Anybody know for sure?
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 Wed, 16 Sep 2020 09:13:18
-0700, Dave Angelini
Did El Sid go out of business?
---
On 2020-09-14 23:49, Howie Michaelson wrote:
Hi All,
I need to replace 3-5 El Sid pumps I'm using in a low volume hydronic heating system. Other than laing pumps, are there any recommendations for 12, 24, or 48 vDC pumps? Having magnetic drives that mate
I have not seen electronics fail in an El Cid from Ivan labs fail.
Probably only 4 installed. The one here is 15 years old on my domestic hot
water. The others are still working, I think.
Talk to Dan at Ivan and see
what he says. There was not a website really (last time I looked) but here
is
I've always suspected that one of the issues was the variable voltage of
DC systems. Batteries get low, and the current increases quite a bit,
cold weather or EQing and the voltage can get really high and cause
problems. The total variation just seems to take out a fair bit of both
brushes
This has been my experience as well, although I can't give such specific
rationale as to why the El Sids failed - the electronics just usually
and eventually fail in my battery-based hydronic system. The Marches
just eventually wear out.
Allan
On 9/15/2020 9:57 PM, Howie Michaelson wrote:
Dave,
I used to use El Sids a lot in SHW systems with direct PV drive for the
glycol circulation. I've long stopped installing SHW, but have used them
in off grid hydronic heat systems as well. The electronics have failed on
many of these pumps over the years. They seem particularly intolerant
Why did the El Sid fail? The one way I have seen them fail, and any pump
for that matter is rain water that has (for some reason) lower than a
normal PH. Below from wiki.
Normal, clean rain has a PH value of between
5.0 and 5.5, which is slightly acidic. However, when rain combines with
sulfur
Howie,
As far as I know, and I have not researched this, The El Sid drivers
mate to the pump bodies used with March 809BR and 809BR-HS hydronic
pumps. The March pumps use brush-type conventional 12 and 24V DC motors.
I have heard, but can't confirm, that Dan Fieldman developed the El Sid
Wrenches
March has a variety of 12, 24 VDC and 120 VAC pumps
Jerry
On Mon, Sep 14, 2020, 8:49 PM Howie Michaelson
wrote:
> Hi All,
> I need to replace 3-5 El Sid pumps I'm using in a low volume hydronic
> heating system. Other than laing pumps, are there any recommendations for
> 12, 24, or 48
Hi Howie,
I’ve had this same quandary when working with some specialty Pv-powered solar
thermal projects. I really like the Laing pumps but they are very expensive and
the D5 Solar version can be hard to get.
Recently I’ve tried the Chinese-made Topsflo DC pumps and despite some initial
Hi All,
I need to replace 3-5 El Sid pumps I'm using in a low volume hydronic
heating system. Other than laing pumps, are there any recommendations for
12, 24, or 48 vDC pumps? Having magnetic drives that mate with the
impeller body of the El Sids, would be a bonus.
Thanks,
Howie
*Howie
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