Info on this RO machine

[APW]

Would anyone have a manual or could you explain this setup? Mainly wondering what the pressure switch and timer are for.
https://imgur.com/a/73cyMWK

 

[MEP001]

The pressure switch is a low pressure shutoff to prevent the pump running dry. The timer is for a membrane flush.

 

[APW]

What unloader would I replace this one with. It has a 50.97 stamped on it.

 

[MEP001]

https://www.kleen-ritecorp.com/p-17286-smc-balanced-regulator-with-low-pressure-spring.aspx

 

[APW]

Got another one for you MEP. What would you use to replace this?

 

[MEP001]

https://www.kleen-ritecorp.com/p-24000-idx-mx8-controller.aspx

Or:

https://www.kleen-ritecorp.com/p-1014-ginsan-gs-16d-multiplex-control-with-delay.aspx

The IDX is more hearty and about half the price.

 

[APW]

These are the solenoids for spot free delivery. It has a 1hp multistage Dayton pump for delivery, what solenoids or 3 Bay manifold would y'all use to replace them.

 

[MEP001]

https://www.kleen-ritecorp.com/p-1850-kip-solenoids-18-24v-metering-none-orifice-332.aspx

That one can handle opening at 250 PSI. It's the closest match to what you have except for the 1/8" NPT ports. If you don't want to lose flow, use this one:

https://www.kleen-ritecorp.com/p-4352-38-2-way-solenoid-normally-closed-24v-1200psi.aspx