How do replace the low pressure switch? Does the system need to be discharged?
I just looked in DIY alldata and the system descripton was that this is a non-cycling system? It also says that the low pressure switch isnsupposed to cutoff at 30 psi. Whats up with that?
Given that low side pressure is driven by the limits of the low side switch and not the charge level it would seem that a better verification of charge level is the high side pressure at 2.3X ambient?