Help with RO/DI booster pump question

[Toddah]

I have a RO/DI system consisting of 3 prefilters Sediment / Charcoal / Charcoal / RO Membrane / Mixed Bed DI / Mixed Bed DI
I typically had 35 to 40 PSI water pressure on the street feed line.
I am doing some upgrades to my whole system like running a new booster pump to increase efficiency, adding Cation resin / anion resin followed by A final mixed DI resin filter.
I have installed the booster pump inline after the feed line and before the prefilters ( I may relocate to just before the RO membrane) but here is my problem:
With the pump running I am only getting 43 to 45 PSI of pressure just before the RO membrane. as soon as I turn the pump on I start getting water running out the drain line. if i plug the drain line with my finger the pressure goes to 80 PSI.
I have replaced the white auto shutoff valve with a new one but that didn't help my issue.
Clearly I am making some sort of error in my installation. can anybody help a fella out???

 

[Snoopy 67]

When I installed mine, it went before the ro unit, not in between cartridges.

 

[Buckeye Hydro]

 

[Buckeye Hydro]

Did you call your vendor?

 

[phan]

Try to place the booster pump just before the RO membrane. You can check this installation procedure Hope this will help you.

 

[Buckeye Hydro]

When I installed mine, it went before the ro unit, not in between cartridges.

That's a less than ideal configuration.

 

[Buckeye Hydro]

I have a RO/DI system consisting of 3 prefilters Sediment / Charcoal / Charcoal / RO Membrane / Mixed Bed DI / Mixed Bed DI
I typically had 35 to 40 PSI water pressure on the street feed line.
I am doing some upgrades to my whole system like running a new booster pump to increase efficiency, adding Cation resin / anion resin followed by A final mixed DI resin filter.
I have installed the booster pump inline after the feed line and before the prefilters ( I may relocate to just before the RO membrane) but here is my problem:
With the pump running I am only getting 43 to 45 PSI of pressure just before the RO membrane. as soon as I turn the pump on I start getting water running out the drain line. if i plug the drain line with my finger the pressure goes to 80 PSI.
I have replaced the white auto shutoff valve with a new one but that didn't help my issue.
Clearly I am making some sort of error in my installation. can anybody help a fella out???

Did you get your situation figured out?
Was your flush valve open? Flow restrictor missing?

 

[Buckeye Hydro]

Try to place the booster pump just before the RO membrane. You can check this installation procedure Hope this will help you.

Avoid systems configured with horizonal DI stages!

 

[shoedy]

Avoid systems configured with horizonal DI stages!

Why?

 

[Buckeye Hydro]

The clear horizontal housings are really intended for GAC media, but you can find them widely used on mis-configured systems as horizontal DI cartridges. Always orient these small DI's vertically, with bottom up flow to assure maximum contact with the resin and to avoid channeling.

 

[shoedy]

Hmm interesting because in my unit the last two stages are mounted horizontally, albeit with a large DI stage