[RE-wrenches] Another pump quesiton

Wed Sep 16 13:00:04 EDT 2020

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
offgridsolar at sti.net [2]
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/ [3]
e-mail
offgridsolar at sti.net [4]
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/ [6]
e-mail offgridsolar at sti.net
[7]
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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