Grundfos submersible pump [RE-wrenches]

[Blair May]

Jay we also have found in Trinity Co. the turbidity of the water, that
good ol Humboldt blue clay, was causing the low water shut off not to
work. This was an old Italian Dankoff pump,predecessor to the grundfoss.
We installed a float type of sensor that cured the prob.You can probably
get the switch from Conergy still. Hope this helps TUMP
-----Original Message-----
From: Bruce Erickson [mailto:msolar at mcn.org] 
Sent: Tuesday, April 22, 2008 7:43 PM
To: RE-wrenches at topica.com
Subject: Re: Grundfos submersible pump [RE-wrenches]




Hi Jay,

We recently hired a pump company to pull an AC pump we were replacing  
with an SQ Flex. The operator mentioned that he has seen several  
instances of algae or other gunk buildup on the Grundfos low water  
sensor just above the pump, which was "shorting" the sensor, fooling  
it into thinking there was still water present. His fix was to scrub  
it off with bleach.

Bruce Erickson
Mendocino Solar Service
707-937-1701
707-937-1741 fax
PO Box 1252
Mendocino, CA 95460


 
"Serving the Solar System"





On Apr 20, 2008, at 6:17 PM, Jay Peltz, Peltz Power wrote:

>
> HI All,
>
> On a different Grundfos note, I think I have a failure with a SQFlex.
>
> ( its running on AC power, well within head specs)
>
> The low water shut down isn't working and the flow has dropped,
>
> Anybody seen problems like this?
>
> And does anyone know the direct line to tech support?
>
> thanks,
> jay
>
> peltz power
>
>
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