Author Topic: Grundfos CU301 changed to CSV control  (Read 2209 times)

Cary Austin

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Grundfos CU301 changed to CSV control
« on: September 21, 2014, 11:23:09 AM »

Thanks for the check back! Hope all is "well" with you! LOL

The CSV solution brought me back to the good old American know-how of KISS! After fussing with the complex Grundfos VFD, your CSV was a simple, successful and elegant solution.

Proof of this is that after the CSV installation and adjustment, we have enjoyed dependable constant pressure water for over the last three years without any equipment monitoring, as it is not needed!

Also, I feel that our Grundfos 15SQE10-250 well pump now has an extended life expectancy with the CSV as opposed to with the Grundfos CU301 VFD.

Since the Grundfos CU301 failed early after installation, I did not take any usage measurements for comparisons. However, I feel that it has saved energy and maintenance efforts on my part. When the Grundfos pump does eventually fail, I will consult with you as to a better standard well pump and HP sized solution for my single well combined domestic and water source heat pump system.

By the way, I occasionally follow your suggestions on the web with solving other well users needs and find them to be quite informative and helpful. I also agree that most product manufacturers are producing lesser quality for greater profits.

As an example, we bought 4 new upper range brand name kitchen appliances three years ago and everyone has since failed in some capacity with replacement parts unavailable or not redesigned to correct original problems. In contrast, I have used for 31 years my John Deere 212 lawn & garden tractor that still cuts grass great and JD still stocks all the parts!

America used to manufacture solid long lasting products with solid service. Thanks Cary for keeping the faith alive with CSV!

Take care and keep up the great work!

Happy CSV fan,
Greg Shumate