Pur-clean spot free

[Chad]

We have a five year old 3000 gal per day pur-clean spot free system. Over the last few years the product water has slowly dropped from 2 gal per min to .5 gal per min. We changed the membrane, checked water flow out of carbon filter and checked the two solenoids. Still no change. Any suggestions?

 

[MEP001]

What is the pressure on the system? It should be at or just below 200 PSI.

 

[Chad]

The pressure is between 180 and 200.

 

[MEP001]

Just to be sure, you did change the membrane, or was it maybe a prefilter? A 3000 GPD system should have two 4 x 40 membranes.

 

[Chad]

I changed the membrane, I thought for sure this was the problem but it did'nt change the output of product water at all. The 3000 gpd on has one membrane.

 

[MEP001]

You might change the gauge to confirm the pressure is right. If the membrane was fouled, a new one should have solved it. Otherwise, only a loss of pressure would change the amount of product.

 

[mac]

Youi may have some type of flow restriction. To check remove the water supply line going to the membrane and turn on the pump. You should get a stream that shoots out a good 10 feet. Are the product and reject flows about the same?

 

[Greg Pack]

Normal input pressure and low flow usually mean a restriction in the membrane. Did you use the same membrane that was in the unit?

Check line from membrane to RO storage tank. Look for a kink, or a valve that may be partially closed.