RODI sedement filter
- Thread starter chewieee
- Start date
zachfishman
Active member
It should only become an issue once the sediment filter becomes clogged with enough material that your RODI unit's production suffers. They sell several "degrees" of sediment filter pore sizes (common 5microns, 1 micron, 0.5 microns, etc.), do you know which yours is? The smaller the pore size, the sooner it will clog but also the better pre-filtering it will do.
DeePDiSHeD
Member
A pressure gage helps in this situation. When you have new filters take note of the pressure. When you see a decent decrease in pressure its time to change them. Every 6 months is what spectrapure recomends.
zachfishman
Active member
Is there any detriment to the RODI filtration is one leaves their sediment filter in longer? I don't have a pressure gauge and was just going to swap mine out when I noticed a decrease in output. I'm always skeptical of usage or replacement interval guidelines by the companies selling said products
Toddrtrex
Premium Member
I notice a drop in my pressure around the 3 month mark, and my time to fill 5 gallons will go from 2 hours to 2.5 hours. It is usually at that point that I will switch out the sediment filter -- I usually make 30-40 gallons at a time, so that extra half over adds up.
d0ughb0y
Active member
Is there any detriment to the RODI filtration is one leaves their sediment filter in longer? I don't have a pressure gauge and was just going to swap mine out when I noticed a decrease in output. I'm always skeptical of usage or replacement interval guidelines by the companies selling said products
if pressure continues to go down, there will be a point where there is not enough pressure to "pinch" the waste water line and you will continuously have water dripping out of the waste water line.
when the filtered output like is closed via a float valve, the input pressure is supposed to "pinch" the input to the ro membrane to close it. if there is not enough pressure, water will leak, and since the filtered output is closed, it will then all go to the waste water output line.
you can use that as a sign you need a new sediment filter. But the decrease in output flow is a better way to tell if you need new filter cartridges. e.g. if it now takes longer to fill up your reservoir. since you can have a new sediment filter and will get a waste water line leak if your input pressure is not high enough.
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