[RE-wrenches] Grundfos SQ Flex

[Dana]

No tech support - This is why they have stopped selling to
almost everyone but pump installers and AEE.

I have lost all other suppliers on the GF Sq flex.

T/G that at least AEE sells this item still.

 

Can AEE help?  Or whomever sold it to you?

 

Dana Orzel

Great Solar Works, Inc

E - dana at solarwork.com

V - 970.626.5253

F - 970.626.4140

C - 970.209.4076

web - www.solarwork.com

 

"Responsible Technologies for Responsible People since 1988"

Do not ever believe anything, but seriously trust through
action.

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf
Of Kirpal Khalsa
Sent: Wednesday, April 06, 2011 2:55 PM
To: RE-wrenches
Subject: [RE-wrenches] Grundfos SQ Flex

 

Hi all....so I have a pumping project using a grundfos SQ
Flex pump....It will operate on the grid when grid is
present and then switch back to solar ready if the grid
power should fail.....here is the set up...
5-Sanyo HIT 220's Vmp non temp adjusted is 213VDC
Pump is SQFlex 16 SQF-10 will have CU 200 controller and
IO101 AC input box....

System has a pressure tank and pressure switch which will be
used instead of float switch as there is no storage tank at
or above ground level....
This system is a retrofit project to an existing well
pumping system......
Here is my questions:
1. Pump and CU 200 controller are rated for upto 300VDC but
IO 101 Controller is only rated for 225VDC.....is that open
circuit or max power on the modules....
2. The Grundfos wiring diagrams only show 2 wires and a
ground leaving the IO101 going to the CU200.....What is
happening when there is 240VAC supplying the system and what
happens when it switches back to DC how is the power
transmitted on those wires?  What happens to the second leg
of the 240VAC generator/grid input?
3. Has anyone done one of these Grundos SQFlex back up water
pumping systems connected to a pressure tank and did it
operate as expected?
Grundfos does not offer tech support.......that is kind of a
bummer....
Thanks for any advice or help....


--
Sunny Regards,
Kirpal Khalsa
NABCEP Certified Solar PV Installer
Renewable Energy Systems
www.oregonsolarworks.com
541-218-0201 m
541-592-3958 o

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