Grundfos v standard pumps [RE-wrenches]

[Ray Walters]

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Hi Kurt;

We just installed an SQ at almost identical water level and 20/40 psi tank. 
We are running off anSW2524+ and T240 transformer. No start surge, pulls 
about 20 amps 120 VAC. output is 5.5 gpm at open discharge.

I would recommend the 5SQ10C-450 instead of the 410 though. The extra gal 
per minute will keep the customer happier, and the efficiency per gal is 
the same or better. I can't imagine the Outback inverter having trouble. We 
ran a circular saw at the same time the pump was running with no noticeable 
voltage or performance problems.

I have another SQ (450) in at the same depth running off a 2500 watt Honda 
generator (cont. rating at our altitude < 2000 watts). It has been in the 
hole for a year and a half now with no problems.

An interesting side note on the soft start SQs, my supplier said we could 
run them on SDR flex pipe since they don't have any hard start up torque. 
It saved our customer $1500 on the install; we shall have to wait and see 
the long term effects of this.

This was replacing an old "Sunrise" system and is a vast improvement in 
water quality now that the water goes straight from the well to the P tank. 
We converted the cistern and "Flowlight" pressure pump over to a separate 
rain catch and yard hydrant system. A washing machine hose can be connected 
between hose bibs to run the cistern system back to the house system in an 
emergency well pump outage. Otherwise the plumbing normally remains 
completely separated.

Ray




>I am recommending the Grundfos 5SQ10C-410 for this application, a vented
>Outback inverter and transformer with the pump in a well that is 365
>feet to water (with pressure tank).
>
>
>Kurt Nelson


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