RO/DI filter very slow

[ArrowCrab]

Hi all,


I've had this ro/di filter for several years and it's been getting very slow, pushing out maybe only 2 gallons an hour. I change the sediment filter, carbon block, and resin regularly and changing them has not improved the water flow at all, and the water pressure of the house is fine. Is there something I need to change in the top compartment of the filtration unit or has it simply reached the end of its lifespan? I'm not really even sure whats in the tube on top or how even to open it up.

http://imgur.com/a/qtquv
http://imgur.com/a/Z8ktO

 

[mcgyvr]

The top is the "RO" membrane.. It needs to be replaced if you have replaced all others and the output is still low..
Typically the RO membrane will last 3-5 years if you are lucky..

Oh and the cap where the red tube comes out is how you open it.. Screw on..

The filters/ro membrane are the lifespan of a unit.. Replace them and its like being reborn again... aaahhhhh

 

[ArrowCrab]

Oh well now that's easy. I feel really stupid, I think I always just assumed the 5 micron CTO/carbon block counted as two parts of the 4 stage system, with the sediment filter and resin being the remaining two.

Many thanks

 

[Buckeye Hydro]

Remember that the speed at which your system produces purified water is largely controller by your RO membrane. Water temperature and water pressure dramatically affect the speed at which the membrane produces purified water.

If you know the water pressure at the membrane, and your water temperature, you can use our calculator to figure out how fast your RO membrane should be producing water.
Compare that to how fast it is actually producing water and that will give you a good indication if it's time to replace the membrane.

Unfortunately the RODI system you bought has a fundamental design deficiency - it has no pressure gauge. The good news is that you can add a pressure gauge at very little cost.

A pressure gauge and a TDS meter are the two "tools" you need to really know what's going on with your RODI.

Russ