On Sun, 6 Jun 2021 14:49:32 -0700, Bob F wrote:
Is the pressure gauge on the same pipe as the switch?
What value does it read? 0 or some higher value?

Let me know if the imgur image uploads works.
https://i.imgur.com/Wlbr3oE.jpg pump, pressure gauge, & pressure switch
https://i.imgur.com/CoY9Xto.jpg pressure switch & plumbing
https://i.imgur.com/4S3jaDC.jpg blown out plastic plug in back of pump
https://i.imgur.com/N3zt1zN.jpg 1-inch plastic plug replaced with brass
https://i.imgur.com/EmoXlEn.jpg non-tapered holes require tapered plugs
https://i.imgur.com/BuUkS0Q.jpg tapered vs non-tapered 1-inch plugs
https://i.imgur.com/06RQp4q.jpg brass, galvanized, steel & plastic plugs

The pressure at the bladder is 52psi.
I can't tell the pressure at the pump because the pressure gauge is stuck.

The main question I have is how to DIY the replacement of the pressure
switch given I don't even know if it's air or water in the copper pipe.