[RE-wrenches] Hober Pumps Reviews?

[jay]

Hi William

I would steer you way way clear from the Shurflo 9300.  It’ll break, they won’t have parts and it’ll never get rebuilt.  

The Hober uses the most common  international design which is a DC to AC 3phase variable speed pump controller, basically an inverter.
It then runs any 3 phase pump within its wattage parameters. These pumps are everywhere, cheap, pretty efficient and extremely reliable.  There are many many of these inverters/controllers on the market.  

It is really hard to get good data on how to size the PV watts to pump watts using these inverters. Unlike a DC positive displacement pump which will still pump but more slowly if low DC input, the centrifugal pump’s output drops off dramatically if you get below its operating window.  And that window is dependant on the pump specs vs flow vs dynamic lift.  
So need more water, add more PV, double PV watts to running watts as a bare minimum.  And specify a pump that is pumping in the bottom of the curve instead of near the top helps to allow it to produce better during lower PV watts input.

Good luck,

Jay

Peltz power






> On Jan 2, 2019, at 4:44 PM, William Dorsett <wmdorsett at sbcglobal.net> wrote:
> 
> Happy New Year Wrenches  From a young lady who is trying to bring clean water to a village in Uganda:
>          “ This is Rosanna Bauman from Garnett. I'd talked to you about 2 years ago about solar pumps for our friends in Uganda. We installed the solar panels but are just now getting the money saved up for the well-drilling. We have clean water located 75 meteers below, no rock. Looking at a Shur-flo or a Hober. We can get the Hober shipped direct from China to Uganda DHL, plus it's about $200 less.  However, we would like some advice as to their reliability. We want something reliable.
> Have any of your Solar Wrenches used or heard of this company? Looking at using a 3000 liter/day pump to pump 1,000 liters, since it will be directly tied to solar power, no battery back-ups.
> You're welcome to call me if you have questions!
> Thanks!
>           Rosanna Bauman”
> 
> Thanks for your thoughts
> Bill Dorsett
>     “Start where you are. Use what you have. Do what you can” Arthur Ashe
> 1715 Leavenworth
> Manhattan, KS  66502
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