Grundfos 6-SQF-2 controller needed??

[HBB]

Hello,

One thousand liter per hour. Sorry for using the dot as decimal separator.

Kind regards,
Horacio

[Naptown]

How do you live on maybe 4 liters of water a day?

[HBB]

Hello kmmtnman,

I have a SQF 1.2-2 that gives me 1.000 Liter/hour @ 22 meter head.

I run it from a 48 VDC battery array, which is charged via solar + generator unit for long no sun periods.
The pump feeds a 100 hectare cattle breeding farm near the Uruguay river.

I have a DIY switching scheme that perfectly replaces the Grundfos box, of course is not a "professional" but is functionally correct.

You dont say what power you will be using. In my install I use about 180 watt, so the pump drains a bit less than 4 Amp

[kmmtnman]

Run dry sensor

Mike,
Thanks for the input. The run dry sensor is just above the pump and wired to the pump. The well guy assured me that it would work without the controller. I figure I'll be taking my chances but wondered if anyone else had any experience with the SQF sans the controller.

Thanks,

[Mike90250]

Manual seems to indicate the motor is fine with AC or CC, within the specified limits and the control boxes enhance the internal control functions. I'm not sure I understand the "run dry" sensor, if that will work without the control box.

Read the manual and take your chances I guess.

[kmmtnman]

Hello,

I'm new to blogging, but have been developing my 5 acres of paradise in the mountains for several years.
When we bought the property it had a 240v well pump but the down pipe was shot. We replaced the pump with a 6 SQF-2 and down pipe w schedule 120pvc and stainless connectors. We have been running the well pump off of generators with no controller, but I now want to run it direct off of a 790w 50vdc array. I want to put a timer on it so it comes on a couple hours a day to top off the 2.6k gal tank uphill and the overflow waters the garden. Has anyone wired an SQF pump dc without the Grundfos controller? I've been doing with ac without any problems. The controller is 300 bucks and really doesn't do much for you except allow for a float switch, which I don't want anyway. BTW there is no power for 20 miles

Thanks,