ham wrote:I have a Reneka Techno, plumbed in. The house does have a pressure regulator on it but I don't know the actual output pressure, although for some reason I think it's about 80 lbs. I assume the advice for decreasing the inlet pressure applies to most machines such as the Reneka too?
It's as much about stabilising the pressure as reducing it.
The Techno does not have a balanced bypass pump, so variations in input pressure will affect the pressure produced by the pump.
Reneka specify a minimum of 2 bar and a maximum of 6 bar, so anywhere in the range 30 to 88 psi should be fine. If you have the later version of the Techno, you can see the static input pressure on the pressure gauge inside the RH cover of the machine when the pump is not running.
Ideally the Techno should have a pressure regulator of its own in the pipework to the machine, with no other draw-offs between it and the machine.
Mine is plumbed in with a good quality brass Watts regulator, which also has a port for a pressure gauge built in which makes it very easy to set and to check. The exact model won't be available in N.America as it is designed for European pipe sizes and fittings, but there will certainly be similar suitable ones in your market.