that it (CSV) is NOT compatible with most pump protection devices.
It is a little confusing because with pumps that are not as good at reducing the amp draw, a Pumptec WILL work. Some pumps that are not as good only drop from 11.5 to maybe 9 amps, so the 25% thing that can’t be changed in the Pumptec is OK. Also a few other devices that have an adjustable underload will work with a CSV.
What is the warranty on the cycle sensor?
12 months from installation or 24 months from manufacture.
Also, regarding pump cooling at low flow. Franklin states that the 2hp motor I'm using does not require a sleeve up to about 86* water temp. I take it that the motor is efficient enough where heat produced is not a problem provided satisfactory ambient water temperature.
It is not that the motor is “efficient enough”, it is that the motor has been shortened up so much that the suction is not far from the end of the motor, so it should still get some circulation of water no matter the inflow location in the well.
As franklin does not recommend cycle stop valves, if the motor can cool itself, without sleeve, drawing 11.5 amps is it correct to say that its fine under lower load zero flow conditions?
Yes the low amps means the motor has been de-rated so much that it can be safely cooled while pumping hot water, or very little cool water. Some may even be OK at zero flow, but we do not recommend less than 1 GPM.
It seems they contradict themselves regarding flow/cooling. At least on the 2hp Super Stainless series motors.
It just stands to reason that since flow past the motor is needed for proper cooling, a shroud would always be a good thing, and it is. Remember Franklin makes motors, so all they really want is for it to last just past the warranty period.
The CSV is a very simple product but the explanation for how it works with pumps can be complicated. We have been trying for 22 years to gather and post all the information needed. Just like this, after all these years there are still things comes up that we need to add. Sorry for any inconvenience. As you can see I posted even more on this topic today. Thanks for bringing it to my attention.