[RE-wrenches] Another pump quesiton

Wed Sep 16 13:04:16 EDT 2020

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
offgridsolar at sti.net [3]
text 209 813 0060

On Wed, 16 Sep 2020 10:00:04
-0700, 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"
http://members.sti.net/offgridsolar/ [4]
e-mail offgridsolar at sti.net
[5]
text 209 813 0060

On Wed, 16 Sep 2020 09:13:18 -0700, Dave Angelini
Offgrid Solar  wrote:  

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 the number 

 ivan labs 561-747-5354 Talk with Dan

Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [6]
e-mail offgridsolar at sti.net
[7]
text 209 813 0060

On Wed, 16 Sep 2020 09:55:31 -0600, Ray  wrote: 

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 and
controls. This is just my long standing theory however, and I don't have
Lab results. 

I actually had similar problems on 120 vac, when I lived on
the edge of the grid. Voltage varied from 90 to 145 vac, and cooked quite a
few things like washing machine controls (every 3 months or so) Once I put
in a backup power system to protect those circuits, the controls lasted for
a decade.  
Ray Walters
Remote Solar
303 505-8760
 On 9/15/20 10:29 PM,
Sindelar Solar wrote:  

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 of higher voltages, even small ones,
which if they are being driven off battery voltage, is hard to avoid.
None-the-less while I really liked the El Sids, they were too expensive to
have as many failures as they did. I'm familiar with March pumps as well,
but they always seem to fail prematurely as well, for even more money. I
was hoping there might be a suitable replacement for a somewhat less
expensive alternative. Howie               Howie Michaelson
 SUN CATCHER

NABCEP Certified Solar PV Installer(tm)
 Solar Electric Systems Sales
">802-272-0004                
  On Tue, Sep 15, 2020 at 10:29 AM Dave
Angelini Offgrid Solar  wrote:  

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 dioxide or nitrogen
oxides--produced from power plants and automobiles--the rain becomes much
more acidic. Typical acid rain has a PH value of 4.0.  

Dave Angelini
Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [9]
e-mail offgridsolar at sti.net
[10]
text 209 813 0060

On Mon, 14 Sep 2020 23:49:35 -0400, 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 with the impeller body of the El Sids, would be a bonus. Thanks,
Howie               Howie Michaelson
 SUN CATCHER
  NABCEP Certified Solar
PV Installer(tm)
 Solar Electric Systems Sales ">802-272-0004              
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