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My current switch is Square D P/N 9013FSG2M4.
Is there beefier, oversized contact rating, replacement switch for that?
Also, which website/store would you recommend for ordering pump control...

Has anyone had any experience with using Amtrol on well pump setup ?
This product seems like way more reliable and easier to adjust (but pricey at about $160). It seems like converting from...

Minerals in the water.... Yep, that makes a perfect sense!
Our well water is very hard, indeed, and that must be it.

BTW, do you have any preference in brands for the pump control pressure...

Last time I had a pump guy replace my 1-hp Gould's jet pump, it cost me something like $1000. I wasn't there to watch it so I don't know the difficulty but he did it in a couple of hours.

OK, thanks. I will try to clean the pvc tubing.
The switch was installed by a professional pump guy about a year and it started to arc like that since about a couple of months ago.

Question, I...

My Furnas AS4FX pressure switch makes arcing like 2 to 3 times, sometimes even 4 times, when it is trying to shut off the pump when it reaches the cut-out pressure (50 psi). It does not cleanly shut...

It won't shut off at once when tank reaches the set pressure (50? psi). It custs Off & On repeatedly really fast with lots of sparks for 4 to 5 times, then it shuts off. There are 2 spring/nut...